WO2008043293A1 - Procédé et appareil de surveillance de la qualité d'un réseau - Google Patents
Procédé et appareil de surveillance de la qualité d'un réseau Download PDFInfo
- Publication number
- WO2008043293A1 WO2008043293A1 PCT/CN2007/070766 CN2007070766W WO2008043293A1 WO 2008043293 A1 WO2008043293 A1 WO 2008043293A1 CN 2007070766 W CN2007070766 W CN 2007070766W WO 2008043293 A1 WO2008043293 A1 WO 2008043293A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- serial connection
- monitoring
- connection monitoring
- signal
- tcm
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0062—Provisions for network management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/14—Monitoring arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0686—Additional information in the notification, e.g. enhancement of specific meta-data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0866—Checking the configuration
- H04L41/0873—Checking configuration conflicts between network elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0876—Aspects of the degree of configuration automation
- H04L41/0883—Semiautomatic configuration, e.g. proposals from system
Definitions
- the present invention relates to network monitoring techniques, and in particular to methods and apparatus for network quality. Background of the invention
- TCM TCM
- TCM The implementation principle of TCM is to add a part of the overhead in the format of the optical channel data unit (ODU) frame, rewrite these overheads at the source end of the transmission, extract and monitor these overheads at the sink end, and generate corresponding defects according to the overhead, thereby enabling continuity. (continuity) monitoring, connectivity monitoring, and signal quality monitoring.
- ODU optical channel data unit
- optical transport network (OTN) frame is shown in Figure 1.
- a total of 4 rows and 3824 columns form a byte-based block frame structure, of which 17 to 3824 are listed as payload areas, which contain service signals, 1 From 16 to the overhead portion, the TCM overhead defined in the Optical Channel Data Unit (ODU) layer of the OTN is in the 1 to 14 columns.
- ODU Optical Channel Data Unit
- a total of 6 levels of TCM overhead are defined, that is, up to six subnets can be monitored simultaneously on one end-to-end path, where TCM6 is open.
- TCM5 is located in columns 8-10 of the second row
- TCM4 is located in the second row of 11-13 ⁇ 'J
- TCM3 is located in the third row of 1 - 3 ⁇ 'J
- TCM2 is located In the third row of columns 4-6
- TCM1 is located in row 7-9 of the third row.
- Each TCM includes the following:
- the first byte is the path trace identifier ( ⁇ ), which is used to monitor whether the transmission path is correct.
- the source side inserts a country code, carrier code, and access point code that can uniquely identify itself in the field.
- the expected value of the received data path is pre-configured at the sink end. If the expected value is the same as the actual transmission path TTI, it indicates that the transmission path is correct. Otherwise, the trace identifier mismatch (TIM) defect alarm information is reported to the network management, and the insertion information is simultaneously inserted.
- Reverse defect indication (BDI), and inserting alarm indication information (AIS) the interpolation function is user selectable;
- the second byte is inter-bit interpolation parity (BIP8), which is used for service data of the payload area.
- the correctness is checked.
- the source will insert a check value in the byte.
- the sink calculates the check value of the received data and compares the two. The same indicates that the reception is correct. Otherwise, the network controller sends an alarm.
- BEI back-interrupted error indication
- 1 - 4 bits are BEI, indicating that there is a bit error at the far end;
- the fifth bit is BDI, indicating that there is a missing bit at the far end Trap alarm; 6 - 8 bits is the status ( STAT ) field.
- the value is 000, it indicates that the serial connection loss (LTC) defect is detected.
- the BDI is inserted back.
- the lock signal (LCK) is indicated.
- the lock signal is not allowed to be used by the user.
- the BDI is inserted back and the AIS is inserted.
- the value is 111
- the AIS is used to suppress the downstream defect alarm.
- all the TCM fields are correspondingly Set to 1, the purpose of this is to locate the root cause of the alarm.
- the value is 110, it indicates that the Open Connection Indication (OCI) defect is detected, that is, there is no service signal detected in the payload area, and the BDI is inserted back and the AIS is inserted.
- OCI Open Connection Indication
- the TCM interface is provided to the user.
- the user decides the allocation and use of the TCM. Otherwise, all the overhead fields of the TCM are set to 0.
- the function is set on the network node device, that is, the TCM overhead is set in the corresponding bit of the frame structure according to the TCM level and mode, and the level and mode of the TCM in a certain direction can be set, and the service TCMs in the two directions are separately set. That is, for each node, the source direction can be set to a certain mode, and the sink direction can be set to a certain mode.
- OPERATIONAL For the source direction of the transmitted data, there are an operation (OPERATIONAL) mode and a transparent (Transparent) mode.
- OPERATIONAL For the source direction of the transmitted data, there are an operation (OPERATIONAL) mode and a transparent (Transparent) mode.
- OPERATIONAL When a certain level of TCM is set to OPERATIONAL mode, the TCM of this level is rewritten, such as inserting TTI, BIP8, BEL BDI, etc.; when a certain level of TCM is set to TRANSPARENT mode, the TCM of this level is not processed. .
- OPERATIONAL mode For the sink direction of the received data, there are OPERATIONAL mode, TRANSPARENT mode, and monitor (MONITOR) mode.
- a certain level of TCM is set to OPERATIONAL mode, the TCM of this level is monitored, such as extracting and monitoring overheads such as BIP8, BEL BDI, and TTI, generating corresponding defects, and performing subsequent actions, such as AIS generation;
- the level TCM is set to MONITOR mode, the TCM of this level is monitored, for example, the overheads such as monitoring BIP8, BEL BDI, and ⁇ are extracted, and corresponding defects are generated, but no follow-up processing is performed; setting a certain level of TCM to TRANSPARENT mode, This level of TCM is not processed. For two-way business, it needs to be set separately for each direction of TCM.
- the passing node includes ABCDEF
- the service is named as service 1
- the TCM of service 1 is assigned as: TCM1 is B ⁇ D
- the intermediate node is C
- TCM2 is C ⁇ E
- the intermediate node is D.
- the signal is to be locked in the TCM2 domain, that is, the LCK of TCM2 is inserted at the C node.
- TCM1 - LCK is detected at the D node
- TCM2 - AIS is detected at the E node.
- the D node detects TCM1 - LCK, it will insert AIS, so all TCM fields are set to 1, and the TCM2 - LCK inserted by the C node is also set, so that the E node can only detect AIS. , but can't know which node has a defect, And what flaws have occurred.
- the root of this problem lies in the fact that the prior art cannot feed back the reason for inserting AIS, which leads to the failure to clarify the type of the defect and the location of the defect. Even if the defect is known, the accuracy of TCM for network quality monitoring is reduced. degree.
- this is a network topology diagram with 16 nodes.
- There is an end-to-end service in the network and the service is from EFGHL to node P, as shown by the thick line in FIG. .
- There are two domains in the network BCFG belongs to domain 1, and FGHJKL belongs to domain 2.
- two levels of TCM are set.
- the use range of TCM1 is FG
- the use range of TCM2 is FGHL.
- SNC/S subnet connection/sublayer
- the sink node selects data according to the defect detected by the TCM monitoring of the two paths. If the primary path has a defect, the data of the standby path is received, and the backup path is used for subsequent transmission, and vice versa. It is called SNC/S protection switching.
- the active and standby paths between F and G are FG and FBCG, respectively, and the active and standby paths between F and L are FGHL and FJKL, respectively, and the function of inserting AIS by TIM is disabled by the user.
- the F node serves as the source of TCM1 and TCM2 at the same time.
- the processing order of the F node is first TCM1, then TCM2, TCM1 is implemented before the cross connection, TCM2 is implemented after the cross connection, and the misconnection of the cross unit causes the F node to issue
- the ODU service that should be sent to the direction of the Node B and the direction of the G node is connected to other directions. Only the ODU service in the direction of the J node is correct, and then passes through the source function of the TCM2. As a result, the service in the J-node direction is normal, and the processing of its TCM2 overhead is also normal.
- the services in the G-node direction and the B-node direction are wrong, and the TCM1 overhead is not initialized, and the TCM2 overhead is processed normally.
- the G node will find that both the active and standby services have the LTC alarm of TCM1, that is, the signal quality of the active and standby devices is the same, and no switching is performed.
- the TIM alarm is detected on both the active and standby G nodes, but the TIM insertion AIS function is disabled, so the G node is not inserted downstream. Enter any signal indication.
- the LTM will find that the TCM2 of both FGHL and FJKL paths are normal or not. But in fact, at this time, only the FJKL direction of the alternate channel is good, and the service of the alternate channel should be used.
- the root cause of this problem is that the G node cannot automatically insert the AIS according to the LTC.
- an object of embodiments of the present invention is to provide a method and apparatus for monitoring a network to improve the accuracy of network quality monitoring.
- embodiments of the present invention provide a method of monitoring network quality, including:
- serial connection monitoring On the network node device, perform serial connection monitoring pre-configuration, set subsequent actions of serial connection loss to enable or disable and/or enable or disable each level of series connection monitoring, and the network node device performs according to the pre-configured content. Serial connection monitoring.
- Embodiments of the present invention also provide an apparatus for monitoring network quality, including: a monitoring control module, configured to perform serial connection monitoring pre-configuration, setting a serial connection lost subsequent action enable or disable and/or serial connection for each level Monitoring is enabled or disabled, And performing serial connection monitoring according to the pre-configured content.
- a monitoring control module configured to perform serial connection monitoring pre-configuration, setting a serial connection lost subsequent action enable or disable and/or serial connection for each level Monitoring is enabled or disabled, And performing serial connection monitoring according to the pre-configured content.
- the invention expands the fault indication code (Fault indication code) of the fault type fault location (FTFL), which is used to indicate what causes the AIS to be inserted, avoids detecting the AIS, but cannot know which node has a defect. And the problem of what is the defect; the invention also implements the configurable relationship between the different levels of TCM, and the user can pre-configure the service layer client layer relationship of different levels of TCM according to the actual situation of the network, thereby avoiding the wrong influence relationship.
- Fault indication code fault indication code of the fault type fault location
- the invention also realizes the configurability of the positional relationship of each level of TCM, that is, the TCM is located before the ODU cross unit or after the cross unit, and provides the user with The management interface is used to set the position of each level of the TCM, so that the monitored position can be accurately located.
- the present invention also implements configurability of different levels of TCM processing order, avoiding different processing orders leading to different TCM monitoring results and thus resulting in different Protection against the occurrence of a switchover.
- the present invention also implements the configurability of the LTS, the LCK, and the OCI to insert the AIS, and enables or disables the TCMs of each level after the configuration is completed, so that the user can perform corresponding configuration according to the needs of the user and the actual network conditions. And ensure that the network node devices process each level of TCM in the order in which they are needed.
- 3 is a network topology diagram with 16 nodes in the background art
- FIG. 4 is a structural diagram of an apparatus for monitoring network quality according to Embodiment 1 of the present invention
- FIG. 5 is a flowchart of a method for monitoring network quality according to Embodiment 1 of the present invention.
- Embodiment 1 of the present invention implements protection switching based on TCM overhead
- FIG. 8 is a diagram showing atomic function models when signal failure information is not transmitted between different TCM layers configured in the first embodiment of the present invention
- Figure 9 is a diagram showing an atomic function model in the first embodiment of the present invention.
- Embodiment 10 is a network topology diagram in Embodiment 2 of the present invention.
- Figure 11 is a diagram showing the atomic function model of the ⁇ business in the second embodiment of the present invention.
- FIG. 12 is a diagram showing an atomic function model of a B service according to Embodiment 2 of the present invention.
- Figure 13 is a diagram showing the atomic function model of the C service in the second embodiment of the present invention. Mode for carrying out the invention
- the invention extends the fault indication code (Fault indication code) of the fault type fault location (FTFL), which is used to indicate what causes the AIS to be inserted, avoids detecting the AIS, but cannot know which node is defective. And the problem of what is the defect; the invention also implements the configurable relationship between the different levels of TCM, and the user can pre-configure the service layer client layer relationship of different levels of TCM according to the actual situation of the network, thereby avoiding the wrong influence relationship.
- Fault indication code fault indication code of the fault type fault location
- the invention also realizes the configurability of the positional relationship of each level of TCM, that is, the TCM is located before the ODU cross unit or after the cross unit, and provides the user with The management interface is used to set the position of each level of the TCM, so that the monitored position can be accurately located.
- the present invention also implements configurability of different levels of TCM processing order, avoiding different processing orders leading to different TCM monitoring results and thus resulting in different Protection against the occurrence of a switchover.
- the present invention also implements LTC, LCK, and OCI configurable AIS, and is configured After the integration, the TCMs of each level are enabled or disabled, so that users can configure according to their own needs and actual network conditions, and ensure that the network node devices process the TCMs of each level according to their required execution order.
- Embodiment 1 is a diagrammatic representation of Embodiment 1:
- FIG. 4 is a structural diagram of an apparatus for monitoring quality of a network according to Embodiment 1 of the present invention, which includes a tributary unit 1, an ODU cross unit 2, a line unit 3, a branching unit 4, and a multiplex unit 5.
- various functions of the present invention for monitoring network quality are mainly performed by the monitoring control module and the monitoring execution module.
- the monitoring control module and the monitoring execution module can be disposed in at least one of the branch units and / or at least one of the line units.
- the tributary unit 1 receives the signal sent by the client side, performs adaptation and inserts the overhead, and then sends the signal to the ODU cross unit 2; when the service is received, the signal sent by the ODU cross unit 2 is received. After the solution is decomposed and the cost is terminated, it is sent to the client side. It also implements pre-configuration of different levels of serial connection monitoring, including configuring the application interval of serial connection monitoring, and the relationship between multiple TCM functions and multiple TCM functions and cross-connect functions; configuring the use mode of serial connection monitoring; Management configuration for serial connection monitoring, etc. It is possible to set the subsequent action enable or disable of the serial connection loss, and to enable or disable the serial connection monitoring of each level, and to expand the fault indication code of the fault type fault location.
- the tributary unit 1 an adaptation source of the optical channel data unit channel to the regenerator section (ODUkP/RS_A_So), which is used to complete the synchronous digital system (SDH)
- the function of the regenerator segment client signal adapted to the optical channel data unit channel signal adapted to the optical channel data unit channel signal; the optical channel data unit channel path termination source (ODUkP-TT-So) for inserting the end-to-end channel overhead in the optical channel data unit channel signal
- the optical channel data unit is connected in series to the adaptation source of the optical channel data unit (ODUkT/ODUk_A_So) for adapting the optical channel data unit channel signal to the signal of the optical channel data unit serial connection sublayer
- the optical channel data unit is connected in series to the sub-layer path termination source (ODUkT TT So ), The overhead for inserting the sublayer in the signal in which the optical channel data unit is connected in series with the sublayer.
- OTN optical transport network
- ODU optical transport network
- OTU optical transport network
- OCh optical channel
- the ODU layer can be further divided into ODUkP and ODUkT sublayers.
- the signal is adapted at each layer and added to the overhead of the layer. For example, in the ODUkT sublayer, TCM overhead is added, such as inserting TTI, BDI, BEI, and BIP8.
- the tributary unit 1 After the above adaptation and insertion overhead, the tributary unit 1 sends a signal to the cross unit 2.
- the TCM function may include 1 level or multiple levels and can handle up to 6 levels of TCM functions.
- the optical channel data unit is connected in series to the sub-layer path termination sink (ODUkT_TT_Sk) for terminating the overhead of the sub-layer in the signal connecting the sub-layers of the optical channel data unit in series; the optical channel data unit is connected in series to the sub-layer to the optical Adaptation sink of channel data unit
- the unit channel signal is decoupled into a regenerator segment customer signal and then sent to the client side.
- the TCM function may include 1 level or multiple levels and can handle up to 6 levels of TCM functions.
- the ODU cross unit 2 is used to complete the cross connection function of the ODU layer signal.
- the function includes a routing function, and the routing function includes a dual-issue/selection function.
- the routing is to send a signal sent from any one of the line units or any one of the branch units to any one of the line units or any one of the branch units, and the receiving function is selected. According to the situation of TCM monitoring, data selection is performed.
- the line unit 3 is configured to receive the signal of the demultiplexing unit 4, perform de-adaptation and extraction overhead, and then send the signal to the ODU cross-unit 2, receive the signal of the ODU cross-unit 2, perform adaptation and insertion overhead, and then send the signal to the multiplex unit 5. . It also implements pre-configuration of monitoring of different levels of serial connection, enabling the subsequent action enable or disable of serial connection loss, and enabling or disabling the serial connection monitoring of each level, and extending the fault indication code of fault type fault location. .
- the optical channel data unit serially connects the sublayer to the adaptation source of the optical channel data unit (ODUkT/ODUk A So ) for the optical channel data unit
- the signal is adapted to the signal of the optical channel data unit connected in series to the sublayer; the optical channel data unit is connected in series with the sublayer path termination source (ODUkT TT So ) for inserting the optical channel data unit serial connector in the signal of the optical channel data unit
- the terminal source (OTUk_TT_So) the overhead for inserting the layer in the signal of the optical channel transmission unit layer; the adaptation source of the optical channel transmission unit to the optical channel (OCh/OTUk-A-So), Adapting the signal of the optical channel
- the line unit 3 When the signal comes from the branching unit 4 on the line side, the line unit 3 performs the following processing: an optical channel path termination sink (OCh_TT_ Sk) for terminating the overhead of the layer in the signal of the optical channel layer; An adaptation sink (OCh/OTUk_A_Sk) of the channel to optical channel transmission unit, configured to demodulate the signal of the optical channel layer into a signal of the optical channel transmission unit layer; the optical channel transmission unit path termination sink (OTUk- TT_ Sk ), used to terminate the overhead of the layer in the signal of the optical channel transmission unit layer; the adaptation channel of the optical channel transmission unit to the optical channel data unit (OTUk/ODUk A Sk ), a signal for adapting a signal of an optical channel transmission unit layer to a signal sub-layer of an optical channel data unit; an optical channel data unit connected in series to a sub-layer path termination sink
- the TCM function may include one level or multiple levels of TCM function, and can handle up to level 6 TCM functions.
- the line unit receives the signal sent from the demultiplexing unit, performs de-adaptation and terminates the overhead, and then sends the signal to the ODU cross-unit; the line unit receives the cross from the ODU.
- the signal sent by the unit is adapted and inserted into the multiplex unit.
- a splitting unit 4 configured to split the multi-wavelength signal into a plurality of optical channel signals and send the signals to the plurality of line units 3;
- the multiplex unit 5 is configured to combine the plurality of optical channel signals of the plurality of line units 3 and send them to one optical fiber transmission.
- branch units 1 and line units 3 there may be a plurality of branch units 1 and line units 3, and only three of them are shown in Fig. 4.
- FIG. 5 is a flowchart of a method for monitoring network quality in the embodiment, which improves an existing method for monitoring network quality, and mainly increases monitoring functions and crossovers between multiple serial connection monitoring functions and multiple serial connections.
- the configuration of the connection function relationship increases the configuration of whether the signal failure information of the TCM is transmitted between different layers, whether the manual insertion of the LCK is allowed, and the fault indication code of the fault type fault location (FTFL) is extended. The reason for the indication is that the AIS is inserted, and the configuration of whether the LTC is subsequently enabled or not is added.
- the graphical interface is also used to support the user's self-adjustment. And confirm the relationship between the TCM functions of different levels. Finally, enable or disable the TCMs of the configured levels.
- the method includes the following steps:
- Step 501 Select an end-to-end service of the ODU layer, where the service may be unidirectional or bidirectional.
- TCM can be used for quality monitoring.
- Step 502 Perform a TCM application interval configuration. This includes specifying the source and sink nodes of a certain level of TCM, and can have up to 6 levels. For bidirectional services, the interval and level configurations are applied to both directions. This step is to monitor the network quality of different network domains. Each network domain through which the service passes can correspond to a TCM level. Also configure the relationship between multiple TCM functions and multiple TCM functions and cross-connect functions.
- the branch unit in the network node device or The line unit monitors the defects existing in the serial connection monitoring of each level according to the relationship between the plurality of TCM functions and between the plurality of TCM functions and the cross-connect function in accordance with the execution order corresponding to the relationship.
- different application scenarios can be implemented by configuring relationships between TCMs and cross-connect functions at different levels.
- the TCM source is placed before the crossover and the TCM sink is placed after the crossover, thereby maximizing TCM path monitoring, that is, monitoring the entire transmission path, including the cross-connect function.
- the TCM source is placed after the intersection, and the TCM sink is placed at the intersection.
- TCM monitoring does not cover the cross-connect function, thereby enabling SNC/S protection switching based on TCM overhead. This is because the cross-connect function can implement the switching of the ODUk signal from the working channel to the protection channel according to the result of the TCM monitoring.
- Step 503 Perform TCM usage mode configuration.
- the configuration includes: whether to configure the maintenance signal for the subsequent service path, where the maintenance signal refers to the AIS, whether the signal failure information of the TCM is transmitted between different layers, whether the TCM signal is invalid and the signal is degraded. Information is used as a protection switching condition.
- the signal failure and signal degradation refer to the signal defect.
- a TIM defect, an LTC defect, an LCK defect, an AIS defect, and an OCI defect occur, the signal is said to have a signal failure, and the transmission error detected by the BIP8 is detected.
- the subsequent execution process of the TCM monitoring specifically includes: if the maintenance signal is inserted into the subsequent service path, the branch unit or the line unit in the network node device monitors the defect. When the occurrence occurs, the maintenance signal is inserted; if the signal failure information of the TCM is configured to be transmitted between different layers, the branch unit or the line unit in the network node device transmits the signal failure information to the occurrence of the defect when the defect is detected. Subordinate level TCM; if the signal failure information is configured as a condition for protection switching, the branch unit or the line unit in the network node device performs protection switching by the cross unit when monitoring the occurrence of the defect.
- the reason for inserting the AIS is indicated by the FTFL.
- the Fault indication code of the FTFL a field indicating the reason for the AIS insertion is added.
- the FTFL is located in the second row and the 14th column in the frame structure shown in FIG.
- the expanded FTFL is shown in the following table:
- the extended FTFL increases the cause of the AIS insertion, such as TIM, LTC, OCI, etc., and also adds different levels of TCM identification, indicating which TCM the AIS is inserted.
- Bits 1-4 of the FTFL indicate the level of monitoring, which is end-to-end channel monitoring and 1 to 6 level TCM monitoring; bits 5-8 indicate the type of fault, which gives the root cause of the fault that caused the AIS to be inserted.
- bits 5-8 indicate the type of fault, which gives the root cause of the fault that caused the AIS to be inserted.
- all of the eight types of fault type indications indicated by bits 5-8 can be used.
- 0001 "signal failure" is mainly used for forward compatibility, and the fault types indicated by 0011 to 0111 are more. For refinement, it does not exist at the same time as 0001. It is convenient for operators to quickly locate the root cause of the problem and can use it as a reference for the impact between different operators' TCMs.
- the subsequent TCM monitoring execution process specifically includes: after the branch unit or the line unit in the network node device detects the defect, the type of the defect and the level of the belonging TCM are written.
- the fault indication code is written.
- FTFL assistance can be used to find out which level of TCM is causing the AIS insertion.
- Step 504 Perform non-intrusive monitoring configuration in the interval.
- the non-intrusive monitoring refers to monitoring performed without destroying the signal itself, and is only processed by the result of the monitoring, for example, for protection switching, for example, the monitoring performed by the H node in FIG. 3 is non-intrusive monitoring.
- the difference between non-intrusive monitoring and TCM sink nodes is that non-intrusive monitoring even detects The defect will not return BDI and BEI, and will not insert AIS.
- the path signal failure information will only be sent to the connection function, and will not be sent to other levels of termination adaptation.
- each direction can be configured separately, and the two directions can be different.
- Step 505 Confirm the TCM configuration. After the user confirms the previous TCM configuration, the system verifies that the user's configuration conflicts with other TCMs that have been configured before. For example, the user sets the TCM level in a domain to TCM1, but in this service, TCM1 has been set to another. At the TCM level in a domain, a conflict occurs at this point; the system also verifies whether the configuration of the non-intrusive monitoring and the corresponding level are appropriate, that is, whether the TCM system of that level can be non-intrusively monitored. If the check passes, then step 506 is performed, otherwise step 502 is re-executed.
- Step 506 Perform management configuration of the TCM.
- the user For the source node to which the TCM is applied, the user is prompted to configure the sender's attributes, such as the TTI configuration to be sent, including the source node's country code, carrier code, and access point code.
- the user For the sink node to which the TCM is applied, the user is configured to configure the attributes of the receiver, such as the receivable configuration, including the expected value of the receiving path and the configuration of the BIP8 error rate threshold.
- the source node of the TCM can also prompt the user whether to allow manual insertion of the LCK to lock the signal. In the case where the configuration allows manual insertion of the LCK, the network node device receives the lock signal defect inserted by the user at the source node monitored by the serial connection.
- the AIS is inserted into the subsequent service path, or the signal failure information of the TCM is configured to be transmitted between different layers, or the signal failure and signal degradation information of the TCM are configured as the protection switching condition.
- prompt the user to configure TIM follow-up action enable and LTC follow-up enable.
- the LTC defect can be used as the insertion condition of the AIS.
- the LTC also serves as the condition for protection switching, and can participate in the alarm suppression. If the LTC follow-up action is disabled, the LTC defect is not The insertion condition of AIS, and LTC is not used as a condition for protection switching.
- the TIM defect can be used as the AIS insertion condition.
- the TIM is also used as the protection switching condition and can participate in the alarm suppression. If the TIM follow-up action is disabled, the TIM defect is not used as the AIS insertion condition. At the same time, TIM is not used as a condition for protection switching.
- the alarm suppression mentioned here means that the alarm is a more important alarm. When the alarm occurs simultaneously with other alarms whose important level is lower than itself, only the alarm can be reported, and an alarm with a higher severity than the alarm is generated. This alarm can also be suppressed. If LTC or TIM is set for alarm suppression, only LTC or TIM will be used when LTC or TIM occurs simultaneously with other alarms with lower importance than LTC or TIM.
- the user is prompted to configure the attributes of the receiver of the node, such as the TTI configuration, the BIP8 error rate threshold, and the user to configure whether the TIM is used as a protection switching condition.
- the attributes of the receiver of the node such as the TTI configuration, the BIP8 error rate threshold, and the user to configure whether the TIM is used as a protection switching condition.
- the above configuration can be performed separately for each direction, and the two directions can be different.
- the subsequent TCM monitoring process specifically includes:
- the tributary unit or line unit in the sender network node device inserts the corresponding overhead at the corresponding source node, and the tributary unit or line unit in the receiver network node device extracts and monitors The overhead, checking whether there is a defect; if the subsequent action of the TIM is configured, the branch unit or the line unit in the network node device performs the insertion of the maintenance signal AIS after detecting the TIM defect; if the LTC is configured After the subsequent action is enabled, the branch unit or the line unit in the network node device performs the insertion of the maintenance signal AIS after detecting the LTC defect.
- Step 507 Determine whether there is any other need to use the TCM for signal monitoring on the service. The interval of the view, if yes, then step 502 is performed to perform another TCM level configuration; otherwise, step 508 is performed.
- Step 508 If the signaling failure information of the TCM is configured to be transmitted between different layers in step 503, step 509 is performed; otherwise, step 512 is performed.
- the signal failure information configured with the TCM is not transferred between different layers, the corresponding atomic function model diagram is shown, for example, in FIG.
- the TCM source and the TCM sink independently process each TCM sublayer by introducing a branch. There is no service layer/client layer association between each sub-layer. After each TCM sub-layer is processed, its subsequent actions are combined and output to the client layer.
- Step 509 Display the relationship between the configured TCM functions of each level by using a graphical interface, and configure the relationship by the user.
- the impact relationship between different levels of TCM should be configured, that is, the customer layer service layer relationship, the service layer affects the client layer, and the system provides the user with a management interface to implement the configuration of the impact relationship. For example, if TCM1 is configured as the service layer and TCM2 is the client layer, if TCM1 needs to insert AIS, the AIS will be inserted into TCM2. If TCM1 is configured as the client layer, TCM2 is the service layer. If TCM1 monitors the defect, If AIS needs to be inserted, the inserted AIS will not affect TCM2. Multiple levels of customer service relationships can be set up. For example, TCM1 can be set to the service layer of TCM2, and TCM2 is the service layer of TCM3. For TCMs that do not have an impact relationship, AIS does not pass between TCM layers.
- the influence relationship between the TCMs is not configured, which causes the uncertainty of the influence between the sink terminals TCM.
- the network shown in Figure 3 Take the network shown in Figure 3 as an example. If there is a domain 3 in the figure and the node is GHKL, the path of the service in domain 3 is GHL, and the defined TCM level is TCM3. If the TCM detects the LCK on the L node, the system will insert the AIS into the TCM3 at the TCM2 of the L node. Therefore, a defect occurs in the domain 3, which causes a protection switchover. Domain 3 has no problem, and the switchover is wrong. According to the solution of the present invention, setting TCM3 affects TCM2, That is to say, TCM3 is used as the service layer, and TCM2 is used as the client layer to avoid this problem.
- the relationship between the TCM functions of each level is also configured to configure the location of the TCMs of each level. That is, after the TCM is in front of the ODU cross unit or after the cross unit, the user can set the position of each level of the TCM through the management interface.
- the position of the TCM relative to the intersecting unit is not defined, which results in uncertainty in the monitoring range of each level of TCM.
- the monitoring becomes meaningless because the switching has been completed.
- Another scenario is that in the monitoring of the TCM, if you want to monitor the quality of the node device and set the TCM before the crossover, you cannot monitor the crossover unit. The invention solves this problem through the management interface of the location setting.
- the system will provide the completed TCM configuration to the user in a graphical interface.
- the graphical interface can be an atomic functional model diagram, as shown in Figure 9.
- the functions performed by the various components of the apparatus shown in Figure 4 in this flow can be seen in Figure 9.
- FIG. 9 is automatically generated according to the configuration of the user in steps 502 to 507, wherein the TCM function relationship is also automatically generated by the system, and the relationship may not meet the requirements of the user.
- the user may use the system according to FIG. Provides a management interface to adjust TCM functional relationships.
- the left side is the source direction function
- the right side is the sink direction function.
- the left side is from top to bottom, and the uppermost triangle is represented by ODUkP.
- ODUkP It is the path termination of the optical channel data unit channel, and the insertion of the signal ODUkP overhead is completed; the ODUkT/ODUk in the trapezoid below completes the adaptation of the ODUkP signal to the ODUkT sublayer signal, that is, converts the frame format of the ODUkP signal into the ODUkT sublayer signal.
- ODUkT in the triangle below is the path termination of the optical channel data unit serially connected to the sublayer, completing the insertion of the signal ODUkT sublayer overhead; and the ODUk in the downward ellipse is the crossover function, that is, the ODU crossover Unit-implemented functions, routing and dual-issue/selection; two sets of trapezoids and triangles below the ellipse and the previous ODUkT/ODUk and The functions of ODUkT are the same. The difference is that the previous implementation is the adaptation and overhead insertion of TCM1.
- the two sets of trapezoidal triangles here implement the adaptation and overhead insertion of TCM2 and TCM3 respectively.
- the ODUk-AP between the trapezoid and the triangle indicates The access point, that is, the interface between the two; the OTUk/ODUk in the downward trapezoid completes the adaptation of the ODU layer signal to the OTU layer signal.
- the upper part of the ellipse is the function of the branch unit, and the following is the function of the line unit.
- ODUk—CP indicates the connection point, indicating that there is a connection relationship.
- TCM1 is located before the intersection
- TCM2 and TCM3 are located after the intersection
- TCM2 is the TCM3.
- Customer layer users can set up to 6 levels of TCM, and these 6 levels of TCM can be located before or after the intersection.
- the rectangular ODUkT-TCMnC in Figure 9 is the management interface provided for the user, n is the corresponding level, and C is the control. With this interface, the user can change the TCM level and mode as needed and set related expectations and so on.
- Step 510 Whether the user confirms the configuration of the relationship between the TCM functions of each level, if yes, go to step 512; otherwise, go to step 511;
- Step 511 The user adjusts the relationship between the TCM functions of each level. This includes adjusting the influence relationship and positional relationship between different levels of TCM.
- each level of TCM is enabled.
- the enabling or disabling of the TCMs of each level includes: Configuring the TCM source function to enable or disable and configuring the TCM sink function to be enabled or disabled.
- the serial connection monitoring includes: The data unit is connected in series with the monitoring path terminal source function and the optical channel data unit is connected in series to monitor the optical channel data unit adaptation source function; when the TCM sink function is enabled, the optical channel data unit serial connection monitoring path terminal sink function is executed. And the optical channel data unit serial connection monitors the optical channel data unit adaptation sink function.
- the TCM enabled or disabled for each interval can be selected separately.
- the configuration is enabled, the insertion of the TCM source and/or the monitoring of the TCM sink are started, and the maintenance signal is inserted according to the set usage mode. If the TCM-related protection switching is configured, some defects obtained according to the TCM are started. Protection switching is performed as a protection switching condition.
- the TCM enable setting cannot be performed by the user.
- the TCM is automatically enabled for each TCM configured by the user. The result is that different TCM configuration sequences will produce different processing results.
- TCM2 if TCM2 is configured first, the system automatically completes the enable, and TCM2 starts monitoring. If an LCK defect occurs at node C, it will be detected at node E. If TCM1 is configured first, the system automatically completes the enable, and TCM1 starts monitoring. If an LCK defect occurs at Node B, TCM1 will insert AIS at Node D, and the AIS will be transparently transmitted to TCM2.
- Embodiment 2 is a diagrammatic representation of Embodiment 1:
- This embodiment uses the network shown in FIG. 10 as an example to specifically describe a method for monitoring network quality using TCM.
- a total of 16 nodes from A to P the elliptical boxed part indicates that the part belongs to a certain domain, the domain generally refers to a certain operator, or any part of the user wants to be divided to be able to separately signal
- the network range for quality monitoring The three domains included in this embodiment are: Domain 1 includes node BCDFGH, Domain 2 includes FGHJKL, and Domain 3 includes GHKL.
- the A service from the node A through the nodes E, F, G, H, L, and finally to the node P as shown by the thick solid line in the figure
- the B service is a two-way service, and one direction from the node A to the node B, F, J, N, 0, last to node P, the other direction from node P via nodes 0, N, J, F, B, and finally to node A, as indicated by the short dashed line in the figure
- the C service from node D through nodes C, G, K, J, I, and finally to node M as indicated by the long dashed line in the figure.
- the TCM configuration process is as follows:
- Step 0. Select A service.
- Step 1 Complete the configuration of the A service in domain 1. Includes:
- Step 11 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit, that is, the TCMs of each level are located before or after the cross connection. Since it is desirable to monitor the signal quality of the signal passing through the domain 1, and the interval of the A service through the domain 1 is FGH, the TCM1 is configured here to apply to the interval FGH. Setting the F node The TCM1 source is located after the cross connection, and the H node TCM1 sink is located before the cross connection.
- Step 12 TCM usage mode configuration. Configure the AIS to be inserted and enabled on the subsequent service path. The configuration disables the signaling failure information of the TCM at different levels. The configuration disables the TCM signal failure and signal degradation information as protection switching conditions.
- Step 13 No non-intrusive monitoring is required in the configuration interval.
- Step 14 The user confirms the above configuration and the system check passes.
- Step 15 Perform TCM related configuration.
- the user For the source node F to which TCM1 is applied, the user is configured to configure the attributes of the sender, such as the TTI configuration.
- the user For the application of TCM1's sink node H, the user is prompted to configure the attributes of the receiver, such as the TTI configuration, BIP8 error rate threshold value configuration, and so on.
- the user is also prompted to additionally configure the TIM Subsequent Action Enable setting and the LTC Follow Up Enable setting.
- non-intrusive monitoring is not performed for nodes in the interval, so that it is not necessary to perform non-intrusive monitoring related configuration. Also prompt the user to allow manual insertion of the LCK.
- Step 16 Determine whether there are other sections that need to use TCM for signal monitoring. Yes, then go to step 2.
- Step 2 Complete the configuration of the A service in domain 2. include: Step 201: The TCM application interval configuration, and the relationship between the source and sink nodes and the ODU cross unit are located before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality when the signal passes through the domain 2, and the interval of the A service through the domain 2 is FGHL, the TCM1 is configured here to apply to the interval FGHL. After setting the F node TCM1 source is located after the cross connection, the L node TCM1 sink is located before the cross connection.
- Step 202 The TCM is configured in a usage manner. Configure the AIS to be inserted and enabled on the subsequent service path. The configuration disables the signaling failure information of the TCM at different levels. The configuration disables the TCM signal failure and signal degradation information as protection switching conditions.
- Step 203 Non-intrusive monitoring configuration in the interval. Configuration does not require non-intrusive monitoring within this interval.
- Step 204 The user confirms the above configuration, the system performs verification, and the verification fails. Since TCM1 has been applied to the interval FGH, it cannot be applied to the interval FGHL overlapping with FGH. Prompt the user that TCMl is already in use and can no longer be applied to the FGHL interval. Go to step 211.
- Step 211 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit are located before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality of the signal passing through the domain 2, and the interval of the A service through the domain 1 is FGHL, the TCM2 is configured here to apply to the interval FGHL. Setting the F-node The TCM2 source is located after the cross-connect, and the L-node TCM2 sink is placed before the cross-connect.
- Step 212 The TCM is configured in a usage manner. Configure the AIS to be inserted and enabled on the subsequent service path. The configuration disables the signaling failure information of the TCM at different levels. The configuration disables the TCM signal failure and signal degradation information as protection switching conditions.
- Step 213 Non-intrusive monitoring configuration in the interval.
- the G node performs non-intrusive monitoring on TCM2.
- Step 214 The user confirms the above configuration, the system performs verification, and the verification passes, and step 215 is performed.
- Step 215 TCM related configuration.
- the user is prompted to configure the attributes of the sender, such as the configuration to be sent.
- the sink node L the user is prompted to configure the attributes of the receiver, such as the TTI configuration, the BIP8 error rate threshold configuration, and the like.
- the user is prompted to additionally configure the TIM subsequent action enable setting and the LTC follow-up enable setting. Also prompt the user whether to allow manual insertion of the LCK.
- the user For node G that performs non-intrusive monitoring on TCM2, the user is prompted to configure the attributes of the receiver, such as the TTI configuration, BIP8 error rate threshold configuration, and so on. It also prompts the user to configure whether to use the TIM as a protection switching condition and configure whether to use the LTC as a protection switching condition.
- the attributes of the receiver such as the TTI configuration, BIP8 error rate threshold configuration, and so on. It also prompts the user to configure whether to use the TIM as a protection switching condition and configure whether to use the LTC as a protection switching condition.
- Step 216 Determine whether there are other sections that need to use TCM for signal monitoring, and then perform step 3.
- Step 3 Complete the configuration of the A service in domain 3. Includes:
- Step 31 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit are located before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality of the signal passing through the domain 3, and the interval of the A service through the domain 3 is GHL, the TCM3 is configured here to apply to the interval GHL. Setting the G node The TCM3 sink is located after the cross connect, and the L node TCM3 sink is placed before the cross connect.
- Step 32 Configure the TCM usage mode. Configure the AIS to be inserted and enabled on the subsequent service path. The configuration disables the signaling failure information of the TCM at different levels. The configuration disables the TCM signal failure and signal degradation information as protection switching conditions.
- Step 33 Non-intrusive monitoring configuration in the interval. Non-intrusive monitoring is not required in this interval.
- Step 34 The user confirms the above configuration, the system performs verification, and the verification passes.
- Step 35 TCM related configuration.
- the user is prompted to configure the attributes of the sender, such as the configuration to be sent.
- the sink node L For the sink node L to which TCM3 is applied, The user is prompted to configure the attributes of the receiver, such as the TTI configuration and the BIP8 error rate threshold.
- the user is also prompted to additionally configure the TIM follow-up action enable setting and the LTC follow-up enable setting.
- This embodiment is not configured to perform non-intrusive monitoring in the interval, and it is not necessary to perform related configuration. Also prompt the user whether to allow manual insertion of the LCK.
- Step 36 Determine whether there are other intervals that need to use TCM for signal monitoring. Otherwise, go to step 4.
- Step 4 Since the failure information allowing the TCM signal to be transmitted between different layers is configured in step 2, step 5 is performed.
- Step 5 Use the atomic function model diagram to indicate the relationship of the TCM functions of each level that has been configured.
- the F node starts to use the level 2 TCM at the same time, and the processing sequence is first to the ODU1 crossover.
- the TCM1 is processed again, and the TCM2 is processed; the L node starts to use the TCM 2 at the same time, and the processing sequence is to process the TCM3 first, then the TCM2, and then the ODU1 cross.
- Step 6 The user confirms the consent.
- Step 7 Enable TCM. Enable TCM1 applied to the interval FGH, enable TCM2 applied to the interval FGHL, and enable TCM3 applied to the interval GHL.
- TCM configuration process is as follows:
- Step 1 Complete the configuration of the B service in domain 1. Includes:
- Step 11 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit are located before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality when the signal passes through the domain 1, and the interval of the B service through the domain 1 is BF, the TCM1 is configured here to apply to the interval BF.
- the B service is a two-way service, and the interval configuration is applied to the two-way. That is, for the A to P direction, TCM1 is applied to the interval BF, and for the P to A direction, the TCM1 is applied to the region. FB.
- the F node TCM1 source and sink is located before the cross connection.
- Step 12 TCM usage mode configuration.
- the AIS is inserted and enabled for the subsequent service path.
- the configuration disables the TCM signal failure information between different layers.
- the TCM signal failure and signal degradation information are configured as The protection switching condition is enabled.
- Step 13 Non-intrusive monitoring configuration in the interval. Non-intrusive monitoring is not required in the configuration interval.
- Step 14 The user confirms the above configuration, the system performs verification, and the verification passes.
- Step 15. TCM related configuration.
- the user is prompted to configure the attributes of the sender, such as the TTI configuration.
- the user is prompted to configure the attributes of the receiver, such as the receivable configuration, and the BIP8 error rate threshold configuration.
- the user is prompted to additionally configure the TIM subsequent action enable setting and the LTC follow-up enable setting.
- This embodiment is not configured to perform non-intrusive monitoring in this interval, and it is not necessary to perform related configuration. Also prompt the user whether to allow manual insertion of the LCK.
- the user is prompted to configure the attributes of the sender, such as the configuration to be sent.
- the user is prompted to configure the receiving attributes, such as the TTI configuration and the BIP8 error rate threshold configuration.
- the user is also prompted to additionally configure the TIM Subsequent Action Enable setting and the LTC Follow Up Enable setting. This embodiment is not configured to perform non-intrusive monitoring in this interval, and it is not necessary to perform related configuration.
- Step 16 Determine whether there are other sections that need to use TCM for signal monitoring. Yes, then go to step 2.
- Step 2 Complete the configuration of the B service in domain 2. Includes:
- Step 21 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit, Before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality of the signal when passing through the domain 2, and the interval of the B service through the domain 2 is FJ, the TCM2 is configured here to apply to the interval FJ.
- the B service is a two-way service, and the interval configuration is applied to the two-way. That is, for the A to P direction, TCM2 is applied to the interval FJ, and for the P to A direction, TCM1 is applied to the interval JF.
- the J node TCM1 source and sink is located before the cross connection.
- Step 22 TCM usage mode configuration.
- the AIS is inserted and enabled for the subsequent service path.
- the configuration disables the TCM signal failure information between different layers.
- the TCM signal failure and signal degradation information are configured as The protection switching condition is enabled.
- Step 23 Non-intrusive monitoring configuration in the interval. Non-intrusive monitoring is not required in the configuration interval.
- Step 24 The user confirms the above configuration, the system performs verification, and the verification passes, and step 25 is performed.
- Step 25 Perform TCM related configuration.
- the user is prompted to configure the attributes of the sender, such as the configuration to be sent.
- the user is prompted to configure the attributes of the receiver, such as the receivable configuration, the BIP8 error rate threshold configuration.
- the user is prompted to additionally configure the TIM follow-up action enable setting and the LTC follow-up enable setting.
- This embodiment is not configured to perform non-intrusive monitoring in this interval, and it is not necessary to perform related configuration. Also prompt the user whether to allow manual insertion of the LCK.
- the user is prompted to configure the attributes of the sender, such as the configuration to be sent.
- the user is prompted to configure the attributes of the receiver, such as the receivable configuration, and the BIP8 error rate threshold configuration.
- the user is also prompted to additionally configure the TIM follow-up action enable setting and the LTC follow-up enable setting. This embodiment is not configured to perform non-intrusive monitoring in this interval, and it is not necessary to perform related matching. Set. Also prompt the user whether to allow manual insertion of the LCK.
- Step 26 Determine whether there are other intervals that need to use TCM for signal monitoring. Otherwise, go to step 3.
- Step 3. Perform Step 4 because you have configured invalidation information that allows TCM signals to be passed between different levels.
- Step 4 Use the atomic function model diagram to indicate the relationship between the various levels of TCM functions that have been configured. It includes the execution order and positional relationship of multiple levels of TCM functions, as shown in Figure 12.
- Step 5 The user confirms the consent.
- Step 6 TCM is enabled. A to P direction, enabling TCM1 applied to interval BF, enabling TCM2 applied to interval FJ. P to A direction, enabling TCM1 applied to interval FB, enabling TCM2 applied to interval JF.
- the TCM configuration process is as follows:
- Step 1 Complete the configuration of the C service in domain 1. Includes:
- Step 11 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit are located before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality of the signal passing through the domain 1, and the interval of the C service through the domain 1 is DCG, the TCM1 is configured to be applied to the interval DCG. Setting the D node The TCM1 source is located after the cross connect, and the G node TCM1 sink is placed before the cross connect.
- Step 12 TCM usage mode configuration. Configure the AIS to be inserted and enabled on the subsequent service path. The configuration disables the signaling failure information of the TCM at different levels. The configuration disables the TCM signal failure and signal degradation information as protection switching conditions.
- Step 13 Non-intrusive monitoring configuration in the interval. Configure C nodes in this interval to perform non-intrusive monitoring of TCM1.
- Step 14. The user confirms the above configuration, the system performs verification, and the verification passes.
- Step 15. Perform TCM-related configuration. For the source node D to which TCM1 is applied, the user is prompted to configure the attributes of the sender, such as the TTI configuration. For the sink node G to which TCM1 is applied, the user is prompted to configure the attributes of the receiver, such as the TTI configuration and the BIP8 error rate threshold configuration. The user is also prompted to additionally configure the TIM follow-up action enable setting and the LTC follow-up enable setting. Also prompt the user whether to allow manual insertion of the LCK.
- the user is prompted whether the TIM defect is configured as a protection switching condition on the node, and whether the LTC defect is configured as a protection switching condition.
- Step 16 Determine whether there are other sections that need to use TCM for signal monitoring. Yes, then go to step 2.
- Step 2 Complete the configuration of the C service in domain 2. Includes:
- Step 11 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit are located before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality of the signal when passing through the domain 2, and the interval of the C service through the domain 2 is GKJ, the TCM2 is configured to be applied to the interval GKJ. Setting the G node The TCM2 source is located after the cross connect, and the J node TCM2 sink is placed before the cross connect.
- Step 22 TCM usage mode configuration. Configure the AIS to be inserted and enabled on the subsequent service path. The configuration disables the signaling failure information of the TCM at different levels. The configuration disables the TCM signal failure and signal degradation information as protection switching conditions.
- Step 23 Non-intrusive monitoring configuration in the interval. Non-intrusive monitoring is not required in this interval.
- Step 24 The user confirms the above configuration, the system performs verification, the verification passes, and the execution steps
- Step 25 Perform TCM related configuration.
- the source node G to which TCM2 is applied Indicates that the user configures the sender's attributes, such as the TTI configuration.
- the user is prompted to configure the attributes of the receiver, such as the TTI configuration and the BIP8 error rate threshold configuration.
- the user is also prompted to additionally configure the TIM follow-up action enable setting and the LTC follow-up enable setting.
- This embodiment is not configured to perform non-intrusive monitoring in this interval, and it is not necessary to perform related configuration. Also prompt the user whether to allow manual insertion of the LCK.
- Step 26 Determine whether there are other intervals that need to use TCM for signal monitoring. Yes, go to step 3.
- Step 3 Complete the configuration of the C service in domain 3. Includes:
- Step 31 The TCM application interval configuration and the relationship between the source and sink nodes and the ODU cross unit are located before the cross connection or after the cross connection. Since it is desirable to monitor the signal quality of the signal passing through the domain 3, and the interval of the C service through the domain 3 is GK, the TCM3 is configured here for the interval GK. Setting the G node The TCM3 sink is located after the cross connect, and the K node TCM3 sink is placed before the cross connect.
- Step 32 Configure the TCM usage mode. Configure the AIS to be inserted and enabled on the subsequent service path. The configuration disables the signaling failure information of the TCM at different levels. The configuration disables the TCM signal failure and signal degradation information as protection switching conditions.
- Step 33 Non-intrusive monitoring configuration in the interval. Non-intrusive monitoring is not required in the configuration interval.
- Step 34 The user confirms that the verification is passed, and step 35 is performed.
- Step 35 TCM related configuration.
- the user is prompted to configure the attributes of the transmission, such as whether the configuration should be configured to allow manual insertion of the LCK.
- the user is prompted to configure the receiving attributes, such as the receiving configuration, and the BIP8 error rate threshold setting.
- the user is prompted to additionally configure the TIM subsequent action enable setting and the LTC follow-up enable setting.
- Step 36 Determine whether there are other sections that need to use TCM for signal monitoring. Otherwise, go to step 4.
- Step 4. Perform step 5 because in Step 2 configure the failure information that allows the TCM signal to be transmitted between different layers.
- Step 5 Use the atomic function model diagram to indicate the relationship of the TCM functions of each level that has been configured. It includes the execution order and positional relationship of multiple levels of TCM functions, as shown in Figure 13.
- Step 6 User confirmation.
- Step 7 TCM is enabled. Enable TCM1 applied to the interval BF to enable TCM2 applied to the inter-area FJ.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Environmental & Geological Engineering (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Description
监视网络质量的方法及装置
技术领域
本发明涉及网络监视技术, 特别 ½视网络质量的方法及装置。 发明背景
世界各地有^艮多不同的网络运营商, 他们各自拥有自己的一些铺设 好的光纤及网络设备, 在自己的子网内部, 网络设备的管理维护故障定 位可由运营商自己完全负责。 但为了获得更大的覆盖范围, 需要将多个 不同的运营商的网络设备连接起来组成为一个更大的网络来为用户服 务。 在这种情况下, 一条端到端的用户业务, 可能会经过多个不同的运 营商的子网传送。 此时, 就需要有某种机制能够分清不同运营商的各自 的网络的质量情况。
为了能够评价不同运营商子网的网络质量, 提出了串联连接监视
( TCM )的概念, 实现对子网的监视, 可用于对端到端业务在传送的一 部分路径上的质量情况进行监视。
TCM 的实现原理是在光信道数据单元(ODU ) 帧的格式中增加一 部分开销, 在传输的源端重写这些开销, 在宿端提取监视这些开销, 根 据开销产生相应缺陷, 从而能够进行连续性(continuity)监视、 连接性 (connectivity)监视及信号质量(signal quality)监视等。
光传送网络(OTN ) 的帧的格式如图 1所示, 共 4行 3824列, 形 成一个基于字节的块状帧结构, 其中 17至 3824列为净荷区, 包含的是 业务信号, 1至 16列为开销部分, 在 OTN的光信道数据单元( ODU ) 层定义的 TCM开销就位于 1至 14列中。 共定义了 6级 TCM开销, 也 就是在一条端到端路径上最多可以同时监视六个子网, 其中, TCM6开
销位于第二行的 5 - 7列, TCM5位于第二行的 8 - 10列, TCM4位于第 二行的 11 - 13歹 'J , TCM3位于第三行的 1 - 3歹 'J , TCM2位于第三行的 4 - 6列, TCM1位于第三行的 7 - 9列。
每个 TCM包括以下内容: 第一字节是路径踪迹标识(ΤΉ ), 用于 监视传输路径是否正确, 源端在该字段中***能够唯一标识自身的国家 代码、 运营商编码及接入点编码, 在宿端会预先配置接收数据路径的期 望值, 如果期望值与实际的传输路径 TTI相同, 则表明传输路径正确, 否则会向网管上报踪迹标识符失配(TIM )缺陷的告警信息, 同时回插 反向缺陷指示(BDI ), 并下插告警指示信息(AIS ), 该下插功能用户可 选; 第二字节是比特间插偶校验(BIP8 ), 用于对净荷区的业务数据的 正确性进行校验, 源端会在该字节中***校验值, 宿端计算接收到的数 据的校验值, 并对两者进行比较, 相同则表明接收正确, 否则向网管发 出告警信息, 回插反向误码指示 (BEI ); 在第三字节中, 1 - 4 比特是 BEI, 表明远端出现了误码; 第五比特是 BDI, 表明远端有缺陷告警; 6 - 8比特为状态( STAT )字段, 值为 000时, 表明检测到了串联连接丟 失(LTC )的缺陷, 回插 BDI, 值为 101时, 表明锁定信号(LCK ), 一 般用于运营商的管理目的, 该锁定信号不允许用户使用, 回插 BDI并下 插 AIS , 值为 111时, 表明 AIS , 用于压制下游的缺陷告警, *** AIS 后, 会相应的把所有 TCM字段全置 1 , 这样做的目的是定位告警根源, 值为 110时, 表明检测到了开放连接指示 (OCI )缺陷, 即检测到净荷 区没有业务信号, 并要回插 BDI, 下插 AIS。
目前, TCM的使用接口是提供给用户的, 由用户决定 TCM的分配 与使用, 否则 TCM的所有开销字段都置 0。在网络节点设备进行功能设 置, 即根据 TCM级别和模式在帧结构的相应位设置 TCM开销, 可设置 某方向的 TCM的级别和模式,对收发两个方向的业务 TCM要分别设置,
即对于每个节点, 可设置源方向为某级别某模式, 可设置宿方向为某级 别某模式。
对于发送数据的源方向, 有操作 (OPERATIONAL )模式和透明 ( TRANSPARENT )模式。 当把某级别 TCM设置为 OPERATIONAL模 式, 则对这个级别的 TCM进行重写处理, 比如*** TTI、 BIP8、 BEL BDI等开销; 把某级别 TCM设置为 TRANSPARENT模式, 则对这个级 别的 TCM不进行处理。
对于接收数据的宿方向,有 OPERATIONAL模式、 TRANSPARENT 模式和监视(MONITOR )模式。当把某级别 TCM设置为 OPERATIONAL 模式, 则对这个级别的 TCM进行监视处理, 比如提取监视 BIP8、 BEL BDI、 TTI等开销, 产生相应缺陷, 并进行后续行动的处理, 如 AIS的 产生;把某级别 TCM设置为 MONITOR模式,则对这个级别的 TCM进 行监视处理, 比如提取监视 BIP8、 BEL BDI、 ΤΉ等开销, 产生相应缺 陷, 但不进行后续行动的处理; 把某级别 TCM设置为 TRANSPARENT 模式, 则对这个级别的 TCM不进行处理。 对于双向的业务需要对每个 方向的 TCM分别设置。
目前, 对于 TCM的处理存在以下的缺点:
首先, 如图 2所示, 在图 2中, 有一条端到端业务的路径, 经过的 节点包括 ABCDEF, 把该业务命名为业务 1 , 对于业务 1的 TCM分配 为: TCM1为 B→D, 中间节点为 C, TCM2为 C→E, 中间节点为 D。 假设在 TCM2域中要锁定信号, 即在 C节点*** TCM2的 LCK。 这样 的话, 就会在 D 节点检测到 TCM1— LCK, 而在 E 节点会检测到 TCM2— AIS。 这是因为, D节点检测到 TCM1— LCK后, 会下插 AIS, 于 是所有的 TCM字段全被置 1 , C节点***的 TCM2— LCK也被置 1了, 从而导致 E节点只能检测到 AIS, 却无法获知是哪个节点发生了缺陷,
以及发生了什么缺陷。 造成这一问题的根本在于, 现有技术无法反馈下 插 AIS的原因, 导致即使获知发生了缺陷, 却无法明确该缺陷的类型及 定位发生缺陷的位置, 从而降低了 TCM对网络质量监视的准确度。
另外, 如图 3所示, 这是一个具有 16个节点的网络拓朴图, 该网络 中存在一个端到端业务, 该业务从节点 A经 EFGHL到节点 P, 如图 3 中粗线所示。 在该网络中包含两个域, BCFG属于域 1 , FGHJKL属于 域 2。 在该端到端路径上, 设置了两个级别的 TCM, TCM1的使用范围 是 FG, TCM2的使用范围是 FGHL。 假设在该网络中设置了子网连接 / 子层(SNC/S )保护, 即在两个节点间用主备两条路径传输数据, 在源 接点向主备两条路径双发数据并生成 TCM开销, 在宿节点根据两条路 径的 TCM监视发现的缺陷情况选收数据, 如果主路径发生了缺陷, 则 接收备路径的数据, 并采用备路径进行随后的传输, 反之亦然, 这种方 法称为 SNC/S保护倒换。 在图 3中, F和 G间的主备路径分别为 FG和 FBCG, F和 L间的主备路径分别为 FGHL和 FJKL, 并且 TIM下插 AIS 的功能被用户配置为禁止。这样, F节点同时作为 TCM1和 TCM2的源, 假如 F节点的处理顺序为先 TCM1 , 后 TCM2, TCM1在交叉连接前实 现, TCM2在交叉连接后实现, 而交叉单元的错连导致 F节点发出的 3 条业务中, 原本应该送到 B节点方向和 G节点方向的 ODU业务被连接 到其它方向,仅仅 J节点方向的 ODU业务是正确的,然后再经过 TCM2 的源功能。 这样的结果就是, J节点方向的业务是正常的, 它的 TCM2 开销的处理也都是正常的。 G节点方向和 B节点方向的业务是错误的, TCM1开销也没有进行初始化处理, TCM2开销进行了正常的处理。 这 时在 G节点会发现主备两条业务都有 TCM1的 LTC告警, 就是说主备 的信号质量情况是一样的, 不进行倒换。 同时在 G节点主备都会检测到 TIM告警, 不过 TIM下插 AIS功能被禁止, 所以在 G节点不向下游插
入任何信号指示。 这时候在 L节点会发现 FGHL和 FJKL两条路径的 TCM2都是正常的, 还是不进行倒换。 但事实上, 这时候只有备用通道 的 FJKL方向的业务是好的, 应该选用备用通道的业务的。 造成这一问 题的根本原因在于, G节点不能根据 LTC自动下插 AIS, 另外, 对于不 同级别 TCM功能间关系以及与交叉连接关系的设置,如哪些 TCM在交 叉连接前实现, 哪些在交叉连接后实现,哪些 TCM影响其它 TCM或受 到其它 TCM的影响,都会导致不同的 TCM监视范围以及不同的保护倒 换处理结果, 而其中有的结果是正确的, 是用户希望得到的, 另一些结 果是错误的, 应该尽量避免, 但现有技术并没有提供进行设置或更改不 同级别 TCM功能间关系以及与交叉连接关系的接口, 用户无法按照自 身需要进行相应设置, 造成了现有 TCM网络监视的不可控性。
以上现有技术中存在的 TCM 网络质量监视的准确性差和不可控的 问题, 都大大影响了缺陷监视的精确度。 发明内容
有鉴于此, 本发明实施例的目的在于提供监视网络的方法及装置, 以提高网络质量监视的精确度。
为了达到上述目的, 本发明的实施例提供了一种监视网络质量的方 法, 包括:
在网络节点设备上, 进行串联连接监视预配置, 设置串联连接丟失 的后继行动使能或禁止和 /或对各级别串联连接监视进行使能或禁止, 网络节点设备按照所述预配置的内容进行串联连接监视。
本发明的实施例还提供了一种监视网络质量的装置, 包括: 监视控制模块, 用于进行串联连接监视预配置, 设置串联连接丟失 的后继行动使能或禁止和 /或对各级别串联连接监视进行使能或禁止,
并按照所述预配置的内容进行串联连接监视。
本发明扩展了故障类型故障定位 (FTFL ) 的故障指示码 (Fault indication code ), 用于指示是什么原因导致了 AIS的下插, 避免了检测 到 AIS, 却无法获知是哪个节点发生了缺陷, 以及发生了什么缺陷的问 题; 本发明还实现了不同级别 TCM间的影响关系的可配置, 用户可根 据网络实际情况, 预先配置不同级别 TCM的服务层客户层关系, 避免 了错误的影响关系导致的错误的 TCM监视结果并由此导致错误的保护 倒换的发生; 本发明还实现了各个级别的 TCM的位置关系的可配置, 即 TCM位于 ODU交叉单元前还是交叉单元后,并为用户提供了管理接 口来设置各级别 TCM的位置, 从而可以准确的定位监视的位置; 本发 明还实现了不同级别 TCM处理顺序的可配置, 避免了不同处理顺序导 致不同的 TCM监视结果并由此导致不同的保护倒换情况的发生。此外, 本发明还实现了 LTC、 LCK及 OCI下插 AIS的可配置, 并且在配置完 成后统一对各级别 TCM进行使能或禁止, 使得用户可以根据自身需要 及实际的网络状况来进行相应配置, 并保证网络节点设备按照自身需要 的执行顺序来处理各级别 TCM。
附图简要说明
图 1为背景技术中光信道传输单元帧的格式;
图 2为背景技术中一个端到端业务的结构图;
图 3为背景技术中一个具有 16个节点的网络拓朴图;
图 4为本发明的实施例一中实现监视网络质量的装置的结构图; 图 5为本发明的实施例一中监视网络质量的方法流程图;
图 6为本发明的实施例一中实现 TCM路径的最大化监视的 TCM功 能与交叉连接关系设置的原子功能模型图;
图 Ί 为本发明的实施例一中实现基于 TCM 开销进行保护倒换的
TCM功能与交叉连接关系设置的原子功能模型图;
图 8 为本发明的实施例一中信号失效信息不在已配置的不同 TCM 层间传递时的原子功能模型图;
图 9为本发明的实施例一中的原子功能模型图;
图 10为本发明的实施例二中的网络拓朴图;
图 11为本发明的实施例二中 Α业务的原子功能模型图;
图 12为本发明的实施例二中 B业务的原子功能模型图;
图 13为本发明的实施例二中 C业务的原子功能模型图。 实施本发明的方式
为使本发明的目的、 技术方案和优点更加清楚, 下面结合附图对本 发明作进一步的详细描述。
本发明扩展了故障类型故障定位 (FTFL ) 的故障指示码 (Fault indication code ), 用于指示是什么原因导致了 AIS的下插, 避免了检测 到 AIS , 却无法获知是哪个节点发生了缺陷, 以及发生了什么缺陷的问 题; 本发明还实现了不同级别 TCM间的影响关系的可配置, 用户可根 据网络实际情况, 预先配置不同级别 TCM的服务层客户层关系, 避免 了错误的影响关系导致的错误的 TCM监视结果并由此导致错误的保护 倒换的发生; 本发明还实现了各个级别的 TCM的位置关系的可配置, 即 TCM位于 ODU交叉单元前还是交叉单元后,并为用户提供了管理接 口来设置各级别 TCM的位置, 从而可以准确的定位监视的位置; 本发 明还实现了不同级别 TCM处理顺序的可配置, 避免了不同处理顺序导 致不同的 TCM监视结果并由此导致不同的保护倒换情况的发生。此外, 本发明还实现了 LTC、 LCK及 OCI下插 AIS的可配置, 并且在配置完
成后统一对各级别 TCM进行使能或禁止, 使得用户可以根据自身需要 及实际的网络状况来进行相应配置, 并保证网络节点设备按照自身需要 的执行顺序来处理各级别 TCM。
实施例一:
图 4为本发明的实施例一中实现监视网络质量的装置的结构图, 包 括支路单元 1、 ODU交叉单元 2、线路单元 3、分波单元 4及合波单元 5。 在本发明中, 主要由监视控制模块和监视执行模块执行本发明的实现监 视网络质量的各种功能。 参见图 4, 该监视控制模块和监视执行模块可 以设置在至少一个支路单元和 /或至少一个线路单元中。
参见图 4, 支路单元 1 , 在上业务时, 接收客户侧发送过来的信号, 进行适配并***开销后发送给 ODU交叉单元 2; 下业务时, 接收 ODU 交叉单元 2发送过来的信号, 进行解适配并终结开销后发送给客户侧。 还实现了对不同级别串联连接监视的预配置, 包括配置串联连接监视的 应用区间,及多个 TCM功能之间及多个 TCM功能与交叉连接功能间的 关系; 配置串联连接监视的使用方式;进行串联连接监视的管理配置等。 能够设置串联连接丟失的后继行动使能或禁止, 以及对各级别串联连接 监视进行使能或禁止, 并能够扩展故障类型故障定位的故障指示码。
当信号从客户侧发送过来时, 经过支路单元 1进行下述处理: 光信道数据单元通道到再生段的适配源 ( ODUkP/RS— A— So ), 用于 完成将同步数字体系 (SDH )再生段客户信号适配成光信道数据单元通 道信号的功能; 光信道数据单元通道路径终端源 ( ODUkP— TT— So ), 用 于在光信道数据单元通道信号中***端到端通道的开销; 光信道数据单 元串联连接子层到光信道数据单元的适配源 ( ODUkT/ODUk— A— So ), 用于将光信道数据单元通道信号适配成光信道数据单元串联连接子层 的信号; 光信道数据单元串联连接子层路径终端源 (ODUkT TT So ),
用于在光信道数据单元串联连接子层的信号中***该子层的开销。
在光传送网络(OTN )设备中, 逻辑上可以划分为几层, 包括 ODU 层、 OTU层、 OCh (光信道)层等。 其中, ODU层又可划分为 ODUkP 和 ODUkT子层。信号在每个层都要进行相应的适配并加入该层的开销, 例如在 ODUkT子层, 就要增加 TCM开销, 如*** TTI、 BDI、 BEI及 BIP8等。
经过以上的适配和***开销后, 支路单元 1将信号发送给交叉单元 2。其中 TCM功能可能包括 1个级别或多个级别,最多可处理 6级 TCM 功能。
当信号从 ODU交叉单元 2侧过来时, 经过支路单元 1进行下述处 理:
光信道数据单元串联连接子层路径终端宿 (ODUkT— TT—Sk ), 用于 在光信道数据单元串联连接子层的信号中终结该子层的开销; 光信道数 据 单 元 串 联连接子 层 到 光信 道数据 单 元 的 适 配 宿
( ODUkT/ODUk A Sk ), 用于将光信道数据单元串联连接子层的信号 解适配成光信道数据单元通道信号; 光信道数据单元通道路径终端宿
( ODUkP TT Sk ), 用于在光信道数据单元通道信号中终结该通道的开 销; 光信道数据单元通道到再生段的适配宿 (ODUkP/RS— A— Sk ), 用于 将光信道数据单元通道信号解适配成再生段客户信号, 然后发送到客户 侧。其中 TCM功能可能包括 1个级别或多个级别,最多可处理 6级 TCM 功能。
ODU交叉单元 2, 用于完成 ODU层信号的交叉连接功能。 该功能 包括路由功能, 路由功能包括双发 /选收功能, 路由是把从任意一个线路 单元或任意一个支路单元送过来的信号发送到任意一个线路单元或任 意一个支路单元, 选收功能是根据 TCM监视的情况, 进行数据选收。
线路单元 3 , 用于接收分波单元 4的信号, 进行解适配和提取开销 后发送给 ODU交叉单元 2, 接收 ODU交叉单元 2的信号, 进行适配和 ***开销后发送给合波单元 5。 还实现了对不同级别串联连接监视的预 配置, 能够设置串联连接丟失的后继行动使能或禁止, 以及对各级别串 联连接监视进行使能或禁止, 并能够扩展故障类型故障定位的故障指示 码。
当信号从 ODU交叉单元 2过来时, 线路单元 3进行下述处理: 光信道数据单元串联连接子层到光信道数据单元的适配源 ( ODUkT/ODUk A So ) , 用于将光信道数据单元信号适配成光信道数 据单元串联连接子层的信号; 光信道数据单元串联连接子层路径终端源 ( ODUkT TT So ) , 用于在光信道数据单元的信号中***光信道数据单 元串联连接子层的开销; 光信道数据单元到光信道传送单元的适配源 ( OTUk/ODUk A So ) , 用于将光信道数据单元的信号适配成光信道传 送单元层的信号; 光信道传送单元路径终端源(OTUk— TT— So ), 用于在 光信道传送单元层的信号中***该层的开销; 光信道传送单元到光信道 的适配源 (OCh/OTUk— A— So ), 用于将光信道传送单元层的信号适配成 光信道层的信号; 光信道路径终端源 (OCh— TT— So ), 用于在光信道层 的信号中***该层的开销, 然后送到线路侧的合波单元 5。其中 TCM功 能可能包括 1个级别或多个级别, 最多可处理 6级 TCM功能。
当信号从线路侧的分波单元 4过来时, 线路单元 3进行下述处理: 光信道路径终端宿 (OCh— TT— Sk ), 用于在光信道层的信号中终结 该层的开销; 光信道到光信道传送单元的适配宿 (OCh/OTUk— A—Sk ), 用于将光信道层的信号解适配成光信道传送单元层的信号; 光信道传送 单元路径终端宿( OTUk— TT— Sk ) , 用于在光信道传送单元层的信号中终 结该层的开销; 光信道传送单元到光信道数据单元的适配宿
( OTUk/ODUk A Sk ), 用于将光信道传送单元层的信号适配成光信道 数据单元通道子层的信号; 光信道数据单元串联连接子层路径终端宿
( ODUkT TT Sk ) , 用于在光信道数据单元串联连接子层的信号中终结 该子层的开销; 光信道数据单元串联连接子层到光信道数据单元的适配 宿 (ODUkT/ODUk— A— Sk ), 用于将光信道数据单元串联连接子层的信 号解适配成光信道数据单元的信号, 然后发送到 ODU交叉单元 2。其中 TCM功能可能包括 1个级别或多个级别的 TCM功能, 最多可处理 6级 TCM功能。
此外, 当端到端路径的中间节点进行光信道数据单元调度时, 线路 单元接收从分波单元发送过来的信号, 进行解适配并终结开销后发送给 ODU交叉单元; 线路单元接收从 ODU交叉单元发送过来的信号, 进行 适配并***开销后发送给合波单元。
分波单元 4, 用于将多波长信号分为多个光信道信号发送给多个线 路单元 3;
合波单元 5 , 用于将多个线路单元 3的多个光信道信号合并到一起 发送给一根光纤传送。
在一个设备中, 支路单元 1和线路单元 3可以有多个, 图 4中仅仅 各表示出了 3个。
图 5为本实施例中监视网络质量的方法流程图, 该方法对现有的监 视网络质量方法进行了改进, 主要增加了对多个串联连接监视功能之间 及多个串联连接监视功能与交叉连接功能间关系的配置,增加了对 TCM 的信号失效信息是否在不同层次间传递的配置, 是否允许手动*** LCK, 扩展了故障类型故障定位( FTFL )的故障指示码( Fault indication code ), 用于指示是什么原因导致了 AIS的下插, 还增加了对 LTC是否 进行后续行动使能的配置, 还采用了图形界面的方式支持用户自主调整
及确认不同级别 TCM功能间的关系, 最后, 对已配置的各级别的 TCM 分别进行使能或禁止, 该方法具体包括以下步骤:
步骤 501、选择一个 ODU层的端到端业务, 该业务可以为单向的也 可以为双向的。 对于每个已选的业务, 都可使用 TCM进行质量监视。
步骤 502、 进行 TCM应用区间配置。 具体包括指定应用某个级别 TCM的源宿节点, 最多可以有 6个级别, 对于双向业务, 则区间及级别 的配置同时应用于双向。 该步骤是为了监视不同网络域的网络质量, 业 务经过的每个网络域可对应一个 TCM级别。还要配置多个 TCM功能之 间及多个 TCM功能与交叉连接功能间的关系。
当配置了 TCM应用区间以及多个串联连接监视功能之间及多个串 联连接监视功能与交叉连接功能间的关系后, 在后续的 TCM监视的执 行过程中, 网络节点设备中的支路单元或线路单元根据多个 TCM功能 之间及多个 TCM功能与交叉连接功能间的关系, 按照与所述关系对应 的执行顺序监视各级别串联连接监视存在的缺陷。 包括在源节点***开 销, 在宿节点提取所述***的开销, 根据所述配置顺序执行不同级别串 联连接监视, 源端先执行客户层, 再执行服务层, 并且先执行交叉连接 前的串联连接监视, 后执行交叉连接后的串联连接监视; 宿端先执行服 务层, 再执行客户层, 并且先执行交叉连接后的串联连接监视, 后执行 交叉连接前的串联连接监视。
在本发明的实施例中, 通过配置各级别 TCM和交叉连接功能间的 关系, 可以实现不同的应用场景。
在图 6所示的场景一中, TCM源置于交叉前, TCM宿置于交叉后, 由此可以实现 TCM路径监视的最大化, 即对整条传输路径进行监视, 包括交叉连接功能。
而在图 7所示的场景二中, TCM源置于交叉后, TCM宿置于交叉
前, 即 TCM监视不会覆盖交叉连接功能, 由此能够实现基于 TCM开销 的 SNC/S保护倒换。这是因为交叉连接功能可以依据 TCM监视的结果, 实现 ODUk信号从工作通道到保护通道的倒换。
步骤 503、 进行 TCM使用方式配置。 具体包括: 配置是否对后续的 业务路径进行维护信号的下插, 这里的维护信号指的是 AIS, 配置是否 把 TCM的信号失效信息在不同层次间传递,配置是否把 TCM的信号失 效和信号劣化信息作为保护倒换条件。
所述信号失效和信号劣化都是指信号发生了缺陷, 当发生了 TIM缺 陷、 LTC缺陷、 LCK缺陷、 AIS缺陷及 OCI缺陷时, 称该信号发生了信 号失效, 对于通过 BIP8检测出的传输误码率, 如果该误码率超过门限 值, 则称该信号发生了信号劣化。
当配置了 TCM的使用方式后,后续的 TCM监视的执行过程具体包 括: 如果配置了对后续业务路径进行维护信号的下插, 则网络节点设备 中的支路单元或线路单元在监视到缺陷的发生时, 执行维护信号下插; 如果配置了把 TCM的信号失效信息在不同层次间传递, 则网络节点设 备中的支路单元或线路单元在监视到缺陷的发生时, 将信号失效信息传 递到下属级别的 TCM;如果配置了把所述信号失效信息作为保护倒换的 条件, 则网络节点设备中的支路单元或线路单元在监视到缺陷的发生 时, 由交叉单元执行保护倒换。
当使能了对后续业务路径进行 AIS下插的情况下, 通过 FTFL把插 入 AIS的原因表示出来。 在 FTFL的 Fault indication code中, 增加表示 AIS***原因的字段。 FTFL位于图 1所示帧结构中的第 2行第 14列。 扩展后的 FTFL如下表所示:
bit 1234 bits 5678
0000 PM 0000 没有故障
0001 TCM1 0001 信号失效
0010 TCM2 0010 信号劣化
0011 TCM3 0011 ODUk(T)-TIM
0100 TCM4 0100 ODUk(T)-LTC
0101 TCM5 0101 ODUk(T)-LCK
0110 TCM6 0110 ODUk(T)-OCI
0111-1111 保留 0111 ODUk(T)-AIS
1000-1111 保留
表 1
扩展后的 FTFL, 增加了导致下插 AIS的原因, 如 TIM、 LTC、 OCI 等,也增加了不同级别 TCM的标识,表示 AIS下插是哪个 TCM进行的。
FTFL 的比特 1-4表示监视级别, 取值分别为端到端通道监视和 1 至 6级 TCM监视; 比特 5-8表示故障类型, 即给出了导致 AIS下插的 故障根因。 对于比特 1-4表示的每一个监视级别, 均可对应比特 5-8表 示的所有 8类故障类型指示,其中, 0001"信号失效"主要用于前向兼容, 0011至 0111表示的故障类型更为细化, 不会与 0001同时存在。 便于运 营商迅速定位问题根源, 能够将其作为不同运营商 TCM之间发生影响 后的参考依据。
当扩展了故障类型故障定位的故障指示码后, 后续的 TCM监视执 行过程具体包括: 网络节点设备中的支路单元或线路单元在检测到缺陷 后, 将缺陷的类型及所属 TCM的级别写入所述故障指示码。
当在中间节点*** AIS后, 可通过 FTFL辅助, 就能够发现是哪个 级别 TCM因为什么原因导致的 AIS***。
步骤 504、 进行区间内非介入监视配置。 按照用户的需要, 在已配 置 TCM应用的区间内选择需要进行非介入监视的节点。 所述非介入监 视, 是指不破坏信号本身所进行的监视, 仅仅利用监视的结果进行相应 处理, 如用于保护倒换, 例如在图 3当中的 H节点进行的监视为非介入 监视。 非介入监视与 TCM宿节点的区别在于, 非介入监视即使检测出
缺陷也不会回传 BDI和 BEI, 不会下插 AIS, 另外, 路径信号失效信息 仅仅会送到连接功能, 不会送到其他层次的终结适配功能。
当然, 如果用户不需要进行非介入监视, 则可以不配置, 直接执行 下一步。 对于双向业务, 可对每个方向分别进行配置, 两个方向可以不 同。
步骤 505、 对 TCM配置进行确认。 用户确认前述的 TCM配置后, ***校验用户的配置与之前已经配置的其他的 TCM是否有沖突, 例如 用户设置某一域内的 TCM的级别为 TCM1 , 但在该业务中, TCM1 已 经设置为另一域中的 TCM级别, 此时就发生了沖突; ***还要校验非 介入监视的配置与相应级别是否合适, 即对于该级别的 TCM***是否 能够非介入监视。 如果校验通过, 则执行步骤 506, 否则重新执行步骤 502。
步骤 506、 进行 TCM的管理配置。 对于应用了 TCM的源节点, 则 提示用户配置发送方的属性, 如应发的 TTI配置, 其中包含源节点的国 家代码、 运营商编码及接入点编码。 对于应用了 TCM的宿节点, 则提 示用户配置接收方的属性, 如应收 ΤΉ配置, 包括接收路径的期望值, BIP8误码率门限值的配置。 另外 TCM的源节点还可提示用户是否允许 手动*** LCK, 以锁定信号。 在配置了允许手动*** LCK的情况下, 网络节点设备接收用户在串联连接监视的源节点***的锁定信号缺陷。
对于在步骤 503配置了对后续业务路径进行 AIS的下插, 或者配置 了把 TCM的信号失效信息在不同层次间传递,或者配置了把 TCM的信 号失效和信号劣化信息作为保护倒换条件的应用方式, 则提示用户另外 配置 TIM后继行动使能和 LTC后续行动使能。 设置了 LTC后续行动使 能, 则 LTC缺陷可作为 AIS的下插条件, LTC也作为保护倒换的条件, 而且可参与告警抑制; 设置了 LTC后续行动禁止, 则 LTC缺陷不作为
AIS的下插条件, 同时 LTC也不作为保护倒换的条件。 设置了 TIM后 继行动使能, 则 TIM缺陷可作为 AIS的下插条件, TIM也作为保护倒 换的条件, 而且可参与告警抑制; 设置了 TIM后续行动禁止, 则 TIM 缺陷不作为 AIS的下插条件, 同时 TIM也不作为保护倒换的条件。这里 所说的告警抑制是指该告警是较为重要的告警, 在该告警与其它重要级 别比自身低的告警同时出现时, 只需上报该告警即可, 而出现比该告警 重要级别高的告警时, 该告警也可被抑制。 如果设置了 LTC或 TIM为 告警抑制,则在 LTC或 TIM与其它重要级别比 LTC或 TIM低的告警同 时出现时, 只上才艮 LTC或 TIM。
对于区间内的进行非介入监视的节点, 则提示用户配置该节点的接 收方的属性, 如应收 TTI配置, BIP8误码率门限值的配置, 另外提示用 户配置 TIM是否作为保护倒换条件使能设置和 LTC是否作为保护倒换 条件使能设置。
对于双向业务, 可对每个方向分别进行上面的配置, 两个方向可以 不同。
当进行了串联连接监视的管理配置后, 后续的 TCM监视过程具体 包括:
如果配置了发送方及接收方属性, 则发送方网络节点设备中的支路 单元或线路单元在相应的源节点***相应开销, 在接收方网络节点设备 中的支路单元或线路单元提取并监视所述开销, 检查是否存在缺陷; 如 果配置了 TIM的后继行动使能,则网络节点设备中的支路单元或线路单 元在检测到 TIM缺陷后, 进行维护信号 AIS的下插; 如果配置了 LTC 的后继行动使能, 则网络节点设备中的支路单元或线路单元在检测到 LTC缺陷后, 进行维护信号 AIS的下插。
步骤 507、判断在该业务上是否还有其他需要使用 TCM进行信号监
视的区间, 如果是, 则执行步骤 502, 进行另外一个 TCM级别的配置; 否则执行步骤 508。
步骤 508、如果在步骤 503中配置了把 TCM的信号失效信息在不同 层次间传递, 则执行步骤 509; 否则执行步骤 512。 当配置了 TCM的信 号失效信息不在不同层间传递时, 对应的原子功能模型图示例如图 8所 示。其中 TCM源端和 TCM宿端通过引入分支的方式,独立处理各 TCM 子层。各子层之间不存在服务层 /客户层关联,各 TCM子层处理结束后, 其后继动作通过或的方式合并输出到客户层。
步骤 509、采用图形界面的方式将已配置的各个级别的 TCM功能间 的关系显示给用户, 由用户配置关系。
首先要配置不同级别 TCM 间的影响关系, 即客户层服务层关系, 服务层影响客户层, ***向用户提供管理接口实现对该影响关系的配 置。 例如, 配置 TCM1为服务层, TCM2为客户层, 如果 TCM1监视到 缺陷需要下插 AIS, 则会向 TCM2中下插 AIS, 而如果配置 TCM1为客 户层, TCM2为服务层, 如果 TCM1监视到缺陷需要下插 AIS, 则下插 的 AIS不会影响到 TCM2。 可以设置多层次的客户服务关系, 例如可以 设置 TCM1为 TCM2的服务层, 而 TCM2又为 TCM3的服务层。 对于 没有设置影响关系的 TCM, 则不会发生 AIS在 TCM层间的传递。
在现有技术中是不进行 TCM 间影响关系配置的, 这会导致宿端 TCM之间影响的不确定性。 以图 3所示网络为例, 支如在该图中还有一 个域 3 , 包含的节点为 GHKL, 则业务在域 3中的路径为 GHL, 定义的 TCM级别为 TCM3。 如果 TCM2在 L节点检测到了 LCK, 由于没有设 置影响关系, ***会在 L节点的 TCM2向 TCM3中下插 AIS, 于是会认 为在域 3中也发生了缺陷, 从而会引发保护倒换, 而此时域 3并没有问 题,该倒换是错误的。如果按照本发明的方案,设置 TCM3影响 TCM2,
即 TCM3作服务层, TCM2作客户层, 就可以避免此问题的发生。
另外, 配置各个级别的 TCM功能间的关系还包括配置各个级别的 TCM的位置, 即 TCM位于 ODU交叉单元前还是交叉单元后, 用户能 够通过管理接口设置各级别 TCM的位置。在现有技术中,没有限定 TCM 相对于交叉单元的位置, 这会导致各级别 TCM监视范围的不确定。 例 如, 在实现保护倒换的过程中, 由于保护倒换是在交叉单元中实现的, 如果此时把 TCM设置在交叉单元后, 那么监视就变得没有任何意义了, 因为倒换都已经完成了。 另一场景是在对 TCM的监视中, 如果想要对 节点设备的质量进行监视, 却将 TCM设置在交叉前, 那么就无法监视 到交叉单元的情况。本发明通过位置设置的管理接口,解决了这一问题。
***会采用图形界面的方式将完成的 TCM配置提供给用户, 该图 形界面可以是一个原子功能模型图, 如图 9所示。 在图 9中可以看出图 4所示装置的各部件在本流程中完成的功能。图 9是根据用户在步骤 502 至步骤 507中的配置自动生成的, 其中的 TCM功能关系也是***自动 生成的, 该关系可能不符合用户的需求, 此时, 用户就可以根据图 9, 利用***提供的管理接口来调整 TCM功能关系。
在图 9中,左侧为源方向功能,右侧为宿方向功能,按照 ITU-T G.805 中建议的原子功能描述方法, 左侧从上往下, 最上面的三角形中的 ODUkP表示的是光信道数据单元通道的路径终端, 完成对信号 ODUkP 开销的***;下面的梯形中的 ODUkT/ODUk完成 ODUkP信号到 ODUkT 子层信号的适配, 即将 ODUkP信号的帧格式转换为 ODUkT子层信号 的帧格式; 下面的三角形中的 ODUkT是光信道数据单元串联连接子层 的路径终端, 完成对信号 ODUkT子层开销的***; 再向下的橢圓形中 的 ODUk是交叉功能, 也就是 ODU交叉单元实现的功能, 实现路由和 双发 /选收; 橢圓形下面的两组梯形和三角形与前面的 ODUkT/ODUk和
ODUkT的功能相同,差别在于前面实现的是 TCM1的适配和开销***, 而这里的两组梯形三角形分别实现 TCM2和 TCM3的适配和开销***, 梯形和三角形之间的 ODUk— AP表示的是接入点, 即两者之间的接口; 再向下的梯形中的 OTUk/ODUk完成 ODU层信号到 OTU层信号的适 配。 橢圓形上面的部分是支路单元的功能, 下面是线路单元的功能。 ODUk— CP表示连接点, 表示此处有连接关系。
从图 9中可以看出, 通过步骤 502到步骤 507的配置, 一共设置了 三个级别的 TCM,其中, TCM1位于交叉前,是 TCM2的客户层, TCM2 和 TCM3位于交叉后, TCM2是 TCM3的客户层。 事实上, 用户至多可 以设置 6个级别的 TCM, 而这 6个级别的 TCM都可以位于交叉前或交 叉后。
图 9中的矩形的 ODUkT— TCMnC就是为用户提供的管理接口, n为 相应级别, C表示控制。 利用该接口, 用户可以按照需要更改 TCM级 别和模式并设置相关期望值等。
步骤 510、用户是否确认各个级别的 TCM功能间的关系的配置,如 果是, 执行步骤 512; 否则执行步骤 511 ;
步骤 511、 用户调整各个级别 TCM功能间的关系。 包括调整不同级 别 TCM间的影响关系和位置关系。
步骤 512、 各级别 TCM使能。 对各级别 TCM进行使能或禁止具体 包括: 配置 TCM源功能使能或禁止及配置 TCM宿功能使能或禁止; 当配置了 TCM源功能使能, 则进行串联连接监视具体包括: 执行 光通道数据单元串联连接监视路径终端源功能及光通道数据单元串联 连接监视到光通道数据单元适配源功能; 当配置了 TCM宿功能使能, 则执行光通道数据单元串接连接监视路径终端宿功能及光通道数据单 元串接连接监视到光通道数据单元适配宿功能。
可分别选择对每个区间应用的 TCM使能或禁止。 配置为使能, 则 开始 TCM源端的***和 /或 TCM宿端的监视, 并按照设置的使用方式 进行维护信号的下插, 如果配置了 TCM相关的保护倒换, 则开始把根 据 TCM得到的一些缺陷作为保护倒换条件进行保护倒换。
在现有技术中, 用户是不能进行 TCM使能的设置的, 用户每配置 一个级别的 TCM, 该 TCM自动使能, 这样的结果就是不同的 TCM配 置顺序会产生不同的处理结果。 以图 2为例, 如果先配置 TCM2, *** 自动完成使能, TCM2开始监视, 如果在 C节点发生 LCK缺陷, 在 E 节点会检测到; 如果先配置 TCM1 , ***自动完成使能, TCM1开始监 视, 如果在 B节点发生了 LCK缺陷, TCM1会在 D节点下插 AIS, 并 且该 AIS透传到 TCM2, 结果 TCM2使能后, 即使在 C节点也发生了 LCK缺陷, 但却检测不到, 因为只能检测到 AIS。 这就造成了不同的配 置顺序导致不同的处理结果, 本发明就采用了用户选择使能的方式避免 了这一问题。
步骤 513、 结束。
实施例二:
本实施例以图 10所示的网络为例, 具体说明使用 TCM监视网络质 量的方法。
在图 10中, 从 A到 P共 16个节点, 橢圓形框起来的部分表示该部 分属于某个域, 该域一般指某一运营商, 也可以是任何一部分用户希望 划分出来能够单独进行信号质量监视的网络范围。 本实施例包含的 3个 域为: 域 1包括节点 BCDFGH, 域 2包括 FGHJKL, 域 3包括 GHKL。 其中, A业务从节点 A经节点 E, F, G, H, L, 最后到节点 P, 如图 中粗实线所示, B业务是一个双向的业务,一个方向从节点 A经节点 B, F, J, N, 0, 最后到节点 P, 另一个方向从节点 P经节点 0, N, J, F,
B, 最后到节点 A, 如图中短虚线所示, C业务从节点 D经节点 C, G, K, J, I, 最后到节点 M, 如图中长虚线所示。
对于 A业务, TCM的配置过程如下:
步骤 0、 选择 A业务。
步骤 1、 完成 A业务在域 1中的配置。 包括:
步骤 11、 TCM应用区间配置, 以及源宿节点与 ODU交叉单元的关 系, 即各级别的 TCM位于交叉连接前或是交叉连接后。 因为希望监视 信号通过域 1时候的信号质量情况, 而 A业务经过域 1的区间是 FGH, 所以这里配置 TCM1应用于区间 FGH。 设置 F节点 TCM1源位于交叉 连接之后, H节点 TCM1宿位于交叉连接之前。
步骤 12、 TCM使用方式配置。 配置对后续业务路径进行 AIS下插 使能,配置把 TCM的信号失效信息在不同层次间传递使能,配置把 TCM 的信号失效和信号劣化信息作为保护倒换条件使能。
步骤 13、 配置区间内不需要进行非介入监视。
步骤 14、 用户确认以上配置, ***校验通过。
步骤 15、 进行 TCM相关的配置。 对于应用 TCM1的源节点 F, 提 示用户配置发送方的属性, 如应发 TTI配置等。 对于应用 TCM1的宿节 点 H, 提示用户配置接收方的属性, 如应收 TTI配置, BIP8误码率门限 值配置等。 还要提示用户另外配置 TIM后继行动使能设置和 LTC后续 行动使能设置。 在本实施例中没有配置对于区间内的节点进行非介入监 视, 因此不必进行非介入监视相关的配置。 还要提示用户是否允许手动 *** LCK。
步骤 16、 判断是否还有其他需要使用 TCM进行信号监视的区间, 是, 于是执行步骤 2。
步骤 2、 完成 A业务在域 2中的配置。 包括:
步骤 201、 TCM应用区间配置, 以及源宿节点与 ODU交叉单元的 关系, 位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 2时 候的信号质量情况, 而 A业务经过域 2的区间是 FGHL, 所以这里配置 TCM1应用于区间 FGHL。 设置 F节点 TCM1源位于交叉连接之后, L 节点 TCM1宿位于交叉连接之前。
步骤 202、 TCM使用方式配置。 配置对后续业务路径进行 AIS下插 使能,配置把 TCM的信号失效信息在不同层次间传递使能,配置把 TCM 的信号失效和信号劣化信息作为保护倒换条件使能。
步骤 203、 区间内非介入监视配置。 配置在本区间内不需要进行非 介入监视。
步骤 204、 用户确认以上配置, ***进行校验, 校验不通过。 因为 TCM1已经应用于区间 FGH,不能同时应用于与 FGH重叠的区间 FGHL。 提示用户 TCMl已经使用, 无法再应用于 FGHL区间, 执行步骤 211。
步骤 211、 TCM应用区间配置以及源宿节点与 ODU交叉单元的关 系, 位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 2时候 的信号质量情况, 而 A业务经过域 1 的区间是 FGHL, 所以这里配置 TCM2应用于区间 FGHL。 设置 F节点 TCM2源位于交叉连接之后, L 节点 TCM2宿位于交叉连接之前。
步骤 212、 TCM使用方式配置。 配置对后续业务路径进行 AIS下插 使能,配置把 TCM的信号失效信息在不同层次间传递使能,配置把 TCM 的信号失效和信号劣化信息作为保护倒换条件使能。
步骤 213、 区间内非介入监视配置。 配置区间内 G节点对 TCM2进 行非介入监视。
步骤 214、 用户对以上配置进行确认, ***进行校验, 校验通过, 执行步骤 215。
步骤 215、 TCM相关的配置。 对于应用 TCM2的源节点 F, 提示用 户配置发送方的属性,如应发 ΤΉ配置等。对于应用 TCM2的宿节点 L, 提示用户配置接收方的属性,如应收 TTI配置, BIP8误码率门限值配置 等。 另外提示用户另外配置 TIM后继行动使能设置和 LTC后续行动使 能设置。 还要提示用户是否允许手动*** LCK。
对于对 TCM2进行非介入监视使能的节点 G, 提示用户配置接收方 的属性, 如应收 TTI配置, BIP8误码率门限值配置等。 另外提示用户配 置是否把 TIM作为保护倒换条件, 并配置是否把 LTC作为保护倒换条 件。
步骤 216、 判断是否还有其他需要使用 TCM进行信号监视的区间, 是, 于是执行步骤 3。
步骤 3、 完成 A业务在域 3中的配置。 包括:
步骤 31、 TCM应用区间配置以及源宿节点与 ODU交叉单元的关系, 位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 3时候的信 号质量情况, 而 A业务经过域 3的区间是 GHL, 所以这里配置 TCM3 应用于区间 GHL。设置 G节点 TCM3源位于交叉连接之后, L节点 TCM3 宿位于交叉连接之前。
步骤 32、 TCM使用方式配置。 配置对后续业务路径进行 AIS下插 使能,配置把 TCM的信号失效信息在不同层次间传递使能,配置把 TCM 的信号失效和信号劣化信息作为保护倒换条件使能。
步骤 33、 区间内非介入监视配置。 配置本区间内不需要进行非介入 监视。
步骤 34、 用户确认以上配置, ***进行校验, 校验通过。
步骤 35、 TCM相关的配置。 对于应用 TCM3的源节点 G, 提示用 户配置发送方的属性,如应发 ΤΉ配置等。对于应用 TCM3的宿节点 L,
提示用户配置接收方的属性,如应收 TTI配置, BIP8误码率门限值配置。 还要提示用户另外配置 TIM后继行动使能设置和 LTC后续行动使能设 置。 本实施例没有配置对于区间内的进行非介入监视, 不必进行相关的 配置。 还要提示用户是否允许手动*** LCK。
步骤 36、 判断是否还有其他需要使用 TCM进行信号监视的区间, 否, 执行步骤 4。
步骤 4、因为在步骤 2中配置了允许在不同层次间传递 TCM信号的 失效信息, 因此执行步骤 5。
步骤 5、用原子功能模型图提示已经配置的各个级别 TCM功能的关 系,如图 11所示,从图 11中可以看出, F节点同时开始使用 2级 TCM, 处理顺序为先到 ODU1交叉, 再处理 TCM1 , 再处理 TCM2; L节点同 时开始使用 2级 TCM, 处理顺序为先处理 TCM3 , 再处理 TCM2, 再到 ODU1交叉。
步骤 6、 用户确认同意。
步骤 7、 进行 TCM使能。 使能应用于区间 FGH的 TCM1 , 使能应 用于区间 FGHL的 TCM2 , 使能应用于区间 GHL的 TCM3。
步骤 8, 结束。
对于 B业务, TCM的配置过程如下:
步骤 0、 选择 B业务。
步骤 1、 完成 B业务在域 1中的配置。 包括:
步骤 11、 TCM应用区间配置以及源宿节点与 ODU交叉单元的关系, 位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 1时候的信 号质量情况, 而 B业务经过域 1的区间是 BF, 所以这里配置 TCM1应 用于区间 BF。 B业务是双向业务, 区间配置应用于双向。 就是说对于 A 到 P方向, TCM1应用于区间 BF, 对于 P到 A方向, TCM1应用于区
间 FB。 设置 B节点 TCMl源宿位于交叉连接之后, F节点 TCM1源宿 位于交叉连接之前。
步骤 12、 TCM使用方式配置。 对于 A到 P方向和 P到 A方向, 都 配置对后续业务路径进行 AIS下插使能, 配置把 TCM的信号失效信息 在不同层次间传递使能, 配置把 TCM的信号失效和信号劣化信息作为 保护倒换条件使能。
步骤 13、 区间内非介入监视配置。 配置区间内不需要进行非介入监 视。
步骤 14, 用户对以上配置进行确认, ***进行校验, 校验通过。 步骤 15、 TCM相关的配置。 在 A到 P方向上, 对于应用 TCM1的 源节点 B, 提示用户配置发送方的属性, 如应发 TTI配置等。 对于应用 TCM1的宿节点 F,提示用户配置接收方的属性,如应收 ΤΉ配置, BIP8 误码率门限值配置。 另外提示用户另外配置 TIM后继行动使能设置和 LTC后续行动使能设置。 本实施例没有配置对于本区间内的进行非介入 监视, 不必进行相关的配置。 还要提示用户是否允许手动*** LCK。
在 P到 A方向上, 对于应用 TCM1的源节点 F, 提示用户配置发送 方的属性, 如应发 ΤΉ配置等。 对于应用 TCM1的宿节点 B, 提示用户 配置接收方面的属性, 如应收 TTI配置, BIP8误码率门限值配置。 还要 提示用户另外配置 TIM后继行动使能设置和 LTC后续行动使能设置。 本实施例没有配置对于本区间内的进行非介入监视, 不必进行相关的配 置。
步骤 16、 判断是否还有其他需要使用 TCM进行信号监视的区间, 是, 于是执行步骤 2。
步骤 2、 完成 B业务在域 2中的配置。 包括:
步骤 21、 TCM应用区间配置以及源宿节点与 ODU交叉单元的关系,
位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 2时候的信 号质量情况, 而 B业务经过域 2的区间是 FJ, 所以这里配置 TCM2应 用于区间 FJ。 B业务是双向业务, 区间配置应用于双向。 就是说对于 A 到 P方向, TCM2应用于区间 FJ, 对于 P到 A方向, TCM1应用于区间 JF。 设置 F节点 TCM1源宿位于交叉连接之后, J节点 TCM1源宿位于 交叉连接之前。
步骤 22、 TCM使用方式配置。 对于 A到 P方向和 P到 A方向, 都 配置对后续业务路径进行 AIS下插使能, 配置把 TCM的信号失效信息 在不同层次间传递使能, 配置把 TCM的信号失效和信号劣化信息作为 保护倒换条件使能。
步骤 23、 区间内非介入监视配置。 配置区间内不需要进行非介入监 视。
步骤 24、 用户对以上配置进行确认, ***进行校验, 校验通过, 执 行步骤 25。
步骤 25、进行 TCM相关的配置。在 A到 P方向上,对于应用 TCM2 的源节点 F, 提示用户配置发送方的属性, 如应发 ΤΉ配置等。 对于应 用 TCM2的宿节点 J, 提示用户配置接收方的属性, 如应收 ΤΉ配置, BIP8误码率门限值配置。 另外提示用户另外配置 TIM后继行动使能设 置和 LTC后续行动使能设置。本实施例没有配置对于本区间内的进行非 介入监视,不必进行相关的配置。还要提示用户是否允许手动*** LCK。
在 P到 A方向上, 对于应用 TCM2的源节点 J, 提示用户配置发送 方的属性, 如应发 ΤΉ配置等。 对于应用 TCM2的宿节点 F, 提示用户 配置接收方的属性, 如应收 ΤΉ配置, BIP8误码率门限值配置。 还要提 示用户另外配置 TIM后继行动使能设置和 LTC后续行动使能设置。 本 实施例没有配置对于本区间内的进行非介入监视, 不必进行相关的配
置。 还要提示用户是否允许手动*** LCK。
步骤 26、 判断是否还有其他需要使用 TCM进行信号监视的区间, 否, 执行步骤 3。
步骤 3、因为已经配置了允许在不同层次间传递 TCM信号的失效信 息, 因此执行步骤 4。
步骤 4、用原子功能模型图提示已经配置的各个级别 TCM功能的关 系。 包括个多级别 TCM功能的执行顺序及位置关系, 如图 12所示。
步骤 5、 用户确认同意。
步骤 6、 TCM使能。 A到 P方向, 使能应用于区间 BF的 TCM1 , 使能应用于区间 FJ的 TCM2。 P到 A方向,使能应用于区间 FB的 TCM1 , 使能应用于区间 JF的 TCM2。
步骤 7、 结束。
对于 C业务, TCM的配置过程如下:
步骤 0、 选择 C业务。
步骤 1、 完成 C业务在域 1中的配置。 包括:
步骤 11、 TCM应用区间配置以及源宿节点与 ODU交叉单元的关系, 位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 1时候的信 号质量情况, 而 C业务经过域 1的区间是 DCG, 所以这里配置 TCM1 应用于区间 DCG。设置 D节点 TCM1源位于交叉连接之后, G节点 TCM1 宿位于交叉连接之前。
步骤 12、 TCM使用方式配置。 配置对后续业务路径进行 AIS下插 使能,配置把 TCM的信号失效信息在不同层次间传递使能,配置把 TCM 的信号失效和信号劣化信息作为保护倒换条件使能。
步骤 13、 区间内非介入监视配置。 配置本区间内 C节点对 TCM1 进行非介入监视。
步骤 14、 用户对以上配置进行确认, ***进行校验, 校验通过。 步骤 15、 进行 TCM相关的配置。 对于应用 TCM1的源节点 D, 提 示用户配置发送方的属性, 如应发 TTI配置等。 对于应用 TCM1的宿节 点 G, 提示用户配置接收方的属性, 如应收 TTI配置, BIP8误码率门限 值配置。 还要提示用户另外配置 TIM后继行动使能设置和 LTC后续行 动使能设置。 还要提示用户是否允许手动*** LCK。
对于使能了对 TCM1进行非介入监视的 C节点,提示用户在该节点 上配置 TIM缺陷是否作为保护倒换条件, 并配置 LTC缺陷是否作为保 护倒换条件。
步骤 16、 判断是否还有其他需要使用 TCM进行信号监视的区间, 是, 于是执行步骤 2。
步骤 2、 完成 C业务在域 2中的配置。 包括:
步骤 11、 TCM应用区间配置以及源宿节点与 ODU交叉单元的关系, 位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 2时候的信 号质量情况, 而 C业务经过域 2的区间是 GKJ, 所以这里配置 TCM2 应用于区间 GKJ。设置 G节点 TCM2源位于交叉连接之后, J节点 TCM2 宿位于交叉连接之前。
步骤 22、 TCM使用方式配置。 配置对后续业务路径进行 AIS下插 使能,配置把 TCM的信号失效信息在不同层次间传递使能,配置把 TCM 的信号失效和信号劣化信息作为保护倒换条件使能。
步骤 23、 区间内非介入监视配置。 配置本区间内不需要进行非介入 监视。
步骤 24、 用户确认以上配置, ***进行校验, 校验通过, 执行步骤
25。
步骤 25、 进行 TCM相关的配置。 对于应用 TCM2的源节点 G, 提
示用户配置发送方的属性, 如应发 TTI配置等。 对于应用 TCM2的宿节 点 J, 提示用户配置接收方的属性, 如应收 TTI配置, BIP8误码率门限 值配置。 还要提示用户另外配置 TIM后继行动使能设置和 LTC后续行 动使能设置。 本实施例没有配置对于本区间内的进行非介入监视, 不必 进行相关的配置。 还要提示用户是否允许手动*** LCK。
步骤 26、 判断是否还有其他需要使用 TCM进行信号监视的区间, 是, 执行步骤 3。
步骤 3、 完成 C业务在域 3中的配置。 包括:
步骤 31、 TCM应用区间配置以及源宿节点与 ODU交叉单元的关系, 位于交叉连接前或是交叉连接后。 因为希望监视信号通过域 3时候的信 号质量情况, 而 C业务经过域 3的区间是 GK, 所以这里配置 TCM3应 用于区间 GK。 设置 G节点 TCM3源位于交叉连接之后, K节点 TCM3 宿位于交叉连接之前。
步骤 32、 TCM使用方式配置。 配置对后续业务路径进行 AIS下插 使能,配置把 TCM的信号失效信息在不同层次间传递使能,配置把 TCM 的信号失效和信号劣化信息作为保护倒换条件使能。
步骤 33、 区间内非介入监视配置。 配置区间内不需要进行非介入监 视。
步骤 34、 用户确认, 校验通过, 执行步骤 35。
步骤 35、 TCM相关的配置。 对于应用 TCM3的源节点 G, 提示用 户配置发送方面的属性, 如应发 ΤΉ配置, 是否允许手动*** LCK。 对 于应用 TCM3的宿节点 K, 提示用户配置接收方面的属性, 如应收 ΤΉ 配置, BIP8误码率门限值配置。 另外提示用户另外配置 TIM后继行动 使能设置和 LTC后续行动使能设置。本例没有配置对于区间内的进行非 介入监视, 不必进行相关的配置。
步骤 36、 判断是否还有其他需要使用 TCM进行信号监视的区间, 否, 执行步骤 4。
步骤 4、因为在步骤 2配置允许在不同层次间传递 TCM信号的失效 信息, 执行步骤 5。
步骤 5、采用原子功能模型图提示已经配置的各个级别 TCM功能的 关系。 包括个多级别 TCM功能的执行顺序及位置关系, 如图 13所示。
步骤 6、 用户确认。
步骤 7、 TCM使能。 使能应用于区间 BF的 TCM1 , 使能应用于区 间 FJ的 TCM2。
步骤 8、 结束。
总之, 以上所述仅为本发明的较佳实施例而已, 并非用于限定本发 明的保护范围。
Claims
1、 一种监视网络质量的方法, 其特征在于, 包括:
在网络节点设备上, 进行串联连接监视的配置, 并配置串联连接丟 失的后继行动使能或禁止, 和 /或配置各级别串联连接监视的使能或禁 止, 网络节点设备按照所述配置的内容进行串联连接监视。
2、 根据权利要求 1所述的监视网络质量的方法, 其特征在于, 所述进行串联连接监视的配置具体包括: 配置各级别串联连接监视 的应用区间, 配置多个串联连接监视功能之间及多个串联连接监视功能 与交叉连接功能间的关系; 则所述进行串联连接监视具体包括: 根据多 个串联连接监视功能之间及多个串联连接监视功能与交叉连接功能间 的关系, 按照与所述关系对应的执行顺序监视各级别串联连接监视存在 的缺陷;
和 /或, 所述进行串联连接监视的配置具体包括: 配置串联连接监视 的使用方式; 则所述进行串联连接监视具体包括: 按照所述使用方式进 行串联连接监视;
和 /或, 所述进行串联连接监视的配置具体包括: 进行串联连接监视 的管理配置; 则所述进行串联连接监视具体包括: 按照所述管理配置进 行串联连接监视;
和 /或, 所述进行串联连接监视的配置包括: 配置串联连接监视区间 内的非介入监视; 则所述进行串联连接监视具体包括: 在设置了非介入 监视的网络节点设备上进行串联连接监视。
3、根据权利要求 2所述的监视网络质量的方法, 其特征在于, 当配 置各级别的串联连接监视的应用区间, 多个串联连接监视功能之间及多 个串联连接监视功能与交叉连接功能间的关系时, 该配置具体包括: 设
定不同级别串联连接监视的源节点和宿节点, 配置不同级别串联连接监 视功能与交叉连接功能间的执行顺序关系, 配置不同级别串联连接监视 功能间的执行顺序关系;
所述进行串联连接监视具体包括:
网络节点设备按照所述源节点及宿节点的设置,在源节点***开销 , 在宿节点提取所述***的开销, 根据所述配置顺序, 源端先执行客户层 的串联连接监视, 再执行服务层的串联连接监视, 并且先执行交叉连接 前的串联连接监视, 后执行交叉连接后的串联连接监视; 宿端先执行服 务层的串联连接监视, 再执行客户层的串联连接监视, 并且先执行交叉 连接后的串联连接监视, 后执行交叉连接前的串联连接监视。
4、根据权利要求 2所述的监视网络质量的方法, 其特征在于, 当配 置串联连接监视的使用方式时,
该配置具体包括: 配置是否对后续业务路径进行维护信号的下插; 则所述进行串联连接监视具体包括: 在配置了对后续业务路径进行维护 信号的下插后, 网络节点设备在监视到缺陷的发生时, 执行维护信号下 插;
和 /或, 该配置具体包括: 配置是否把串联连接监视的信号失效信息 在不同层次间传递; 则所述进行串联连接监视具体包括: 在配置了把串 联连接监视的信号失效信息在不同层次间传递后, 网络设备在监视到缺 陷的发生时, 将信号失效信息传递到按照执行顺序的后续级别的串联连 接监视;
和 /或, 该配置具体包括: 配置是否把信号失效信息及信号劣化信息 作为保护倒换的条件; 则所述进行串联连接监视具体包括: 在配置了把 所述信号失效信息作为保护倒换的条件后, 网络设备在监视到缺陷的发 生时, 执行保护倒换。
5、根据权利要求 4所述的监视网络质量的方法, 其特征在于, 当配 置了对后续业务路径进行维护信号的下插, 或配置了把串联连接监视的 信号失效信息在不同层次间传递, 或配置了把信号失效信息及信号劣化 信息作为保护倒换的条件时,
所述串联连接监视使用方式的配置进一步包括: 配置踪迹标识符失 配的后继行动使能;
所述进行串联连接监视进一步包括: 网络节点设备在检测到踪迹标 识符失配缺陷后, 进行维护信号的下插。
6、根据权利要求 2所述的监视网络质量的方法, 其特征在于, 当进 行串联连接监视的管理配置时,
该配置具体包括: 对于业务上应用了串联连接监视的源节点, 配置 发送方的属性,对于应用了串联连接监视的宿节点,配置接收方的属性; 则所述进行串联连接监视具体包括: 当配置了发送方及接收方属性后, 则网络节点设备在相应的源节点***相应开销, 在接收方提取并监视所 述开销, 检查是否存在缺陷;
和 /或, 该配置具体包括: 配置是否允许手动***锁定信号缺陷; 则 所述进行串联连接监视具体包括: 当配置了允许手动***锁定信号缺 陷, 则允许用户在串联连接监视的源节点手动***锁定信号缺陷。
7、根据权利要求 2至 6中任意一项所述的监视网络质量的方法,其 特征在于, 所述串联连接监视预配置进一步包括扩展故障类型故障定位 的故障指示码, 具体执行以下步骤:
在所述故障指示码中加入标识踪迹标识符失配缺陷、 串联连接丟失 缺陷、 锁定信号缺陷、 开放连接指示缺陷及告警指示信号缺陷的代码, 并加入标识不同串联连接监视级别的代码;
所述进行串联连接监视进一步包括:
网络设备节点在检测到缺陷后, 将缺陷的类型及所属串联连接监视 的级别写入所述故障指示码。
8、根据权利要求 2至 6中任意一项所述的监视网络质量的方法,其 特征在于, 当设置了串联连接丟失的后继行动使能, 则所述进行串联连 接监视具体包括:在检测到串联连接丟失缺陷后,进行维护信号的下插; 当设置了串联连接丟失的后继行动禁止, 则所述进行串联连接监视进一 步包括: 在检测到串联连接丟失缺陷后, 不进行维护信号的下插。
9、根据权利要求 2至 6中任意一项所述的监视网络质量的方法,其 特征在于, 对各级别串联连接监视进行使能或禁止具体包括: 配置串联 连接监视源功能使能或禁止及配置串联连接监视宿功能使能或禁止; 当配置了串联连接监视源功能使能, 则所述进行串联连接监视进一 步包括: 执行光通道数据单元串联连接监视路径终端源功能及光通道数 据单元串联连接监视到光通道数据单元适配源功能; 当配置了串联连接 监视宿功能使能, 则执行光通道数据单元串接连接监视路径终端宿功能 及光通道数据单元串接连接监视到光通道数据单元适配宿功能。
10、 根据权利要求 4所述的监视网络质量的方法, 其特征在于, 当 配置把串联连接监视的信号失效信息在不同层次间传递时, 该方法进一 步包括以下步骤:
网络节点设备采用图形界面的方式将已配置的各级别的串联连接监 视功能的关系提示给用户, 如果用户同意则确认; 否则调整各级别的串 联连接监视功能的关系。
11、 一种监视网络质量的装置, 其特征在于, 包括:
监视控制模块, 用于进行串联连接监视的配置, 并配置串联连接丟 失的后继行动使能或禁止, 和 /或配置各级别串联连接监视的使能或禁 止;
监视执行模块, 用于按照所述配置的内容进行串联连接监视。
12、根据权利要求 11所述的监视网络质量的装置, 其特征在于, 所 述监视控制模块及监视执行模块设置于所述支路单元和 /或线路单元中。
13、根据权利要求 12所述的监视网络质量的装置, 其特征在于, 该 装置进一步包括 ODU交叉单元;
所述支路单元接收客户侧发送过来的信号, 进行适配及***开销后 发送给所述 ODU交叉单元; 接收所述 ODU交叉单元发送过来的信号, 进行解适配并终结开销后发送给客户侧;
ODU交叉单元, 用于完成对 ODU层信号的调度功能;
所述线路单元对信号进行适配及***开销后发送给 ODU交叉单元, 并接收 ODU交叉单元的信号, 进行解适配并终结开销。
14、根据权利要求 12所述的监视网络质量的装置, 其特征在于, 所 述装置进一步包括:
分波单元, 用于将多波长信号分为多个光信道信号发送给多个线路 单元;
合波单元, 用于将多个线路单元的多个光信道信号合并到一起发送 给一根光纤传送。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT07816957T ATE496453T1 (de) | 2006-09-27 | 2007-09-25 | Verfahren und vorrichtung zum überwachen der netzwerkqualität |
DE602007012127T DE602007012127D1 (de) | 2006-09-27 | 2007-09-25 | Verfahren und vorrichtung zum überwachen der netzwerkqualität |
EP07816957A EP2075955B1 (en) | 2006-09-27 | 2007-09-25 | A method and apparatus for monitoring network quality |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006101278950A CN101154995B (zh) | 2006-09-27 | 2006-09-27 | 监视网络质量的方法及装置 |
CN200610127895.0 | 2006-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008043293A1 true WO2008043293A1 (fr) | 2008-04-17 |
Family
ID=39256463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2007/070766 WO2008043293A1 (fr) | 2006-09-27 | 2007-09-25 | Procédé et appareil de surveillance de la qualité d'un réseau |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2075955B1 (zh) |
CN (1) | CN101154995B (zh) |
AT (1) | ATE496453T1 (zh) |
DE (1) | DE602007012127D1 (zh) |
WO (1) | WO2008043293A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114339493A (zh) * | 2021-12-31 | 2022-04-12 | 中国联合网络通信集团有限公司 | 基于otn网络的故障业务处理方法、装置及存储介质 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101599868B (zh) | 2008-06-02 | 2011-12-28 | 华为技术有限公司 | Tcm路径搜索、创建方法及路径搜索、创建管理*** |
ATE556507T1 (de) * | 2009-09-14 | 2012-05-15 | Alcatel Lucent | Verfahren und vorrichtung zur automatischen ermittlung in optischen transportnetzen |
CN102064881B (zh) * | 2009-11-13 | 2014-11-05 | 中兴通讯股份有限公司 | 一种串联连接监视级别处理方法及装置 |
WO2011063834A1 (en) * | 2009-11-25 | 2011-06-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Optical transport network alarms |
CN103313148B (zh) * | 2012-03-13 | 2018-08-14 | 中兴通讯股份有限公司 | 开销修改及防止子网同时倒换的方法、装置、网元和网络 |
CN103516421B (zh) * | 2012-06-26 | 2017-11-07 | 中兴通讯股份有限公司 | 一种子网连接保护的方法和*** |
CN103780423B (zh) * | 2012-10-25 | 2017-05-31 | 中国电信股份有限公司 | 在线改变误码告警门限的方法、装置以及数据传输网络 |
CN109981166B (zh) * | 2017-12-27 | 2021-03-05 | ***通信集团公司 | 一种错误连接光纤的定位方法及装置 |
CN114598569B (zh) * | 2022-02-25 | 2023-10-03 | 中铁第四勘察设计院集团有限公司 | 一种网络架构 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030097472A1 (en) * | 2001-11-16 | 2003-05-22 | Patrice Brissette | Tandem connection monitoring parallel processing |
US20030231638A1 (en) * | 2002-06-12 | 2003-12-18 | Alcatel | Tandem connection activation/deactivation |
US20050028043A1 (en) * | 2003-07-29 | 2005-02-03 | Cisco Technology, Inc., A California Corporation | Method and apparatus for providing tandem connection, performance monitoring, and protection architectures over ethernet protocols |
US20050086555A1 (en) * | 2003-10-20 | 2005-04-21 | David Langridge | Optical communications network |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE327606T1 (de) * | 1999-09-07 | 2006-06-15 | Lucent Technologies Inc | Verbesserte mehrfachrahmensynchronisierung für tandemverbindungspuren |
EP1411665A1 (en) * | 2002-10-18 | 2004-04-21 | Alcatel | Method and apparatus for shared protection in an optical transport network ring based on the ODU management |
CN100365966C (zh) * | 2003-11-18 | 2008-01-30 | 华为技术有限公司 | 实现串接监视静荷误码校验值补偿下插的方法及其装置 |
CN100365968C (zh) * | 2003-11-18 | 2008-01-30 | 华为技术有限公司 | 网络通信中实现串接监视终端处理的方法及其装置 |
CN100413259C (zh) * | 2006-02-07 | 2008-08-20 | 华为技术有限公司 | 一种自动实现串联连接监测的方法和装置 |
-
2006
- 2006-09-27 CN CN2006101278950A patent/CN101154995B/zh active Active
-
2007
- 2007-09-25 EP EP07816957A patent/EP2075955B1/en active Active
- 2007-09-25 DE DE602007012127T patent/DE602007012127D1/de active Active
- 2007-09-25 WO PCT/CN2007/070766 patent/WO2008043293A1/zh active Application Filing
- 2007-09-25 AT AT07816957T patent/ATE496453T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030097472A1 (en) * | 2001-11-16 | 2003-05-22 | Patrice Brissette | Tandem connection monitoring parallel processing |
US20030231638A1 (en) * | 2002-06-12 | 2003-12-18 | Alcatel | Tandem connection activation/deactivation |
US20050028043A1 (en) * | 2003-07-29 | 2005-02-03 | Cisco Technology, Inc., A California Corporation | Method and apparatus for providing tandem connection, performance monitoring, and protection architectures over ethernet protocols |
US20050086555A1 (en) * | 2003-10-20 | 2005-04-21 | David Langridge | Optical communications network |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114339493A (zh) * | 2021-12-31 | 2022-04-12 | 中国联合网络通信集团有限公司 | 基于otn网络的故障业务处理方法、装置及存储介质 |
CN114339493B (zh) * | 2021-12-31 | 2023-06-20 | 中国联合网络通信集团有限公司 | 基于otn网络的故障业务处理方法、装置及存储介质 |
Also Published As
Publication number | Publication date |
---|---|
CN101154995A (zh) | 2008-04-02 |
DE602007012127D1 (de) | 2011-03-03 |
CN101154995B (zh) | 2011-05-11 |
EP2075955A4 (en) | 2010-03-24 |
ATE496453T1 (de) | 2011-02-15 |
EP2075955A1 (en) | 2009-07-01 |
EP2075955B1 (en) | 2011-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2008043293A1 (fr) | Procédé et appareil de surveillance de la qualité d'un réseau | |
US7333425B2 (en) | Failure localization in a transmission network | |
CA2558786C (en) | Line-level path protection in the optical layer | |
EP1981211B1 (en) | A method for processing the tandem connection monitoring failure dependency of different levels and an equipment thereof | |
US8433190B2 (en) | Hot-swapping in-line optical amplifiers in an optical network | |
KR100696176B1 (ko) | Mpls lsp보호절체 장치 및 방법 | |
US7821971B2 (en) | Protection providing method and customer edge apparatus | |
US8090257B2 (en) | Optical communication system, optical communication apparatus, and method of monitoring fault alarm in path section detour | |
US7706254B2 (en) | Method and system for providing ethernet protection | |
US20090175618A1 (en) | Method and apparatus for implementing subnet connection protection with sub-layer monitoring on an oduk | |
US8965197B2 (en) | Method of switching optical transport network and node device | |
JP4924387B2 (ja) | マルチサービスプラットフォームとローカルエリアネットワークとの間の接続を保護する方法、マルチサービスプラットフォーム及びシステム | |
CN102498683B (zh) | 光传输网络中的自动发现方法和装置 | |
US20070133564A1 (en) | Method for propagating maintenance signal in VPWS network using SDH/SONET | |
US9667341B2 (en) | Apparatus and method for protection switching in optical transport network (OTN) suporting ODUflex(GFP) | |
US9716650B2 (en) | Communication system and transfer apparatus | |
US7139479B2 (en) | Method and apparatus for optical network administration | |
US20090297141A1 (en) | Transmission apparatus, path testing method, and storage medium | |
CN100571158C (zh) | 监视网络质量的方法及装置 | |
Murakami et al. | Highly reliable and large-capacity packet transport networks: technologies, perspectives, and standardization | |
WO2011017863A1 (zh) | 光数据单元环路共享保护控制方法与装置 | |
KR20160106913A (ko) | OTN(Optical Transport Network)에서 자동 보호 절체(APS)를 위한 소스 노드 및 중간 노드의 동작 방법, 그 소스 노드 및 중간 노드 | |
US20080107415A1 (en) | System and Method for Discovering Neighboring Nodes | |
US20080181606A1 (en) | Optical bi-directional line-switched ring transmission system, transmission apparatus, and through cross-connect setting method | |
JP2005295464A (ja) | 光伝送システム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07816957 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007816957 Country of ref document: EP |