CN107846298B - Network connection automatic discovery method and system - Google Patents
Network connection automatic discovery method and system Download PDFInfo
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- CN107846298B CN107846298B CN201610837998.XA CN201610837998A CN107846298B CN 107846298 B CN107846298 B CN 107846298B CN 201610837998 A CN201610837998 A CN 201610837998A CN 107846298 B CN107846298 B CN 107846298B
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- 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
- H04L41/02—Standardisation; Integration
- H04L41/022—Multivendor or multi-standard integration
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- 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
- H04L41/02—Standardisation; Integration
- H04L41/0233—Object-oriented techniques, for representation of network management data, e.g. common object request broker architecture [CORBA]
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- 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
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- 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
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- 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
- H04L41/0886—Fully automatic configuration
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Abstract
The invention discloses a method and a system for automatically discovering network connection, and relates to the field of data transmission. The automatic discovery system comprises: the network management system comprises a network manager, a plurality of network element managers and a plurality of network elements, wherein the network elements are respectively managed by different network element managers; the network element writes the identification information corresponding to the network element port into the service signal and sends out the identification information, or reads the identification information from the received service signal and reports the identification information to the network manager through the network element manager; the network element manager forwards information transmitted between the network element and the network manager; the network manager receives the identification information reported by the network element through the network element manager, determines the network element port corresponding to the reported identification information according to the corresponding relation information of the network element port and the identification, and establishes the logical connection relation between the network element port corresponding to the identification information and the network element port reporting the identification information. Therefore, the logic association between the network elements in different network element managers, even the logic association between the network elements in different management domains, is automatically discovered.
Description
Technical Field
The present invention relates to the field of data transmission, and in particular, to a method and a system for automatically discovering network connection.
Background
Transmission systems currently rely mainly on EMS (element manager) and NMS (network manager) to manage network elements. The EMS is provided by the device vendor and communicates with the network elements via the proprietary protocols of each vendor. The NMS mainly manages the EMS through common interfaces such as CORBA or MTOSI (Multi-Technology operating Systems Interface), and implements monitoring and management of the underlying network element through managing the EMS.
The single EMS management system mainly comprises a service single board and an auxiliary function single board, wherein the single boards are connected through a physical optical fiber according to the direction of data flow sent or received by signals. Because each single board is connected with the port through the optical fiber, the optical fiber is only responsible for information transmission, and does not transmit the association relationship between the single boards.
EMS supervises service and equipment, firstly creates virtual connection optical fiber manually, maps the physical connection relation between single boards, establishes the logical association relation of the single boards, then connects all equipment single boards through the graphical interface of EMS, displays the real-time path of the service, and is convenient for maintenance personnel to manage and analyze the network.
Through the mode, the problem of logic association between network elements in the same EMS is solved, but the problem of network dispersion between different EMS, particularly between different manufacturers, cannot be solved, and maintenance personnel need to log in a plurality of EMS when operating and maintaining cross-domain services, so that the management difficulty is increased, the fault location time is long, and the efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problems that: logical associations between network elements in different EMSs discover problems.
In one aspect, the present invention provides a method for automatically discovering network connection, including:
the first network element writes first identification information corresponding to a first network element port into a service signal and sends the service signal;
the second network element receiving the service signal reads first identification information from the service signal and reports the first identification information to the network manager through the network element manager;
the network manager receives first identification information sent by the second network element, determines that the first identification information corresponds to the first network element port according to the corresponding relation information of the network element port and the identification, and establishes a logical connection relation between the first network element port and the second network element port.
In an embodiment, the first network element writes the first identification information into an operator-defined byte of OTUk overhead of the service signal; the second network element reads the first identification information from the operator-defined byte of the received service signal.
In one embodiment, the network manager periodically analyzes the network element port pair in a connected state, and deletes the logical connection relationship of the network element port pair if the identification information sent by the network element port pair is different from the received identification information, or deletes the logical connection relationship of the network element port pair if any one port of the network element port pair cannot receive the identification information of the other port.
In one embodiment, the method further comprises:
the second network element writes second identification information corresponding to a second network element port into a service signal and sends the service signal;
the third network element receiving the service signal reads second identification information from the service signal and reports the second identification information to the network manager;
and the network manager receives second identification information sent by a third network element, determines that the second identification information corresponds to a second network element port according to the corresponding relation information of the network element port and the identification, and establishes a logical connection relation between the second network element port and the third network element port.
In one embodiment, the network manager displays the logical connection relationship between the network element ports by means of virtual connection fibers.
In one embodiment, a network manager sends configuration information to network elements managed by the network manager, where the configuration information includes identification information corresponding to network element ports.
In another aspect, the present invention further provides a network connection auto-discovery system, including: the network management system comprises a network manager, a plurality of network element managers and a plurality of network elements, wherein the network elements are respectively managed by different network element managers;
the network element is used for writing the identification information corresponding to the port of the network element into a service signal and sending the service signal to other network elements, or is used for reading the identification information from the received service signal and reporting the read identification information to a network manager through the network element manager for managing the network element;
the network element manager is used for forwarding the identification information reported by the network element to the network manager and forwarding the identification information issued by the network manager to the corresponding network element;
the network manager is used for issuing the identification information to the network element through the network element manager for managing the network element, receiving the identification information which is reported by the network element through the network element manager for managing the network element and is read from the received service signal, determining the network element port corresponding to the reported identification information according to the corresponding relation information of the network element port and the identification, and establishing the logical connection relation between the network element port corresponding to the identification information and the network element port reporting the identification information.
In one embodiment, the network element writes the identification information corresponding to the port of the network element into the operator-defined byte of the OTUk overhead of the service signal, and reads the identification information from the operator-defined byte of the received service signal.
In an embodiment, the network manager is further configured to periodically analyze the network element port pair in a connected state, and delete the logical connection relationship of the network element port pair if the identification information sent by the network element port pair is different from the received identification information, or delete the logical connection relationship of the network element port pair if any one port of the network element port pair does not receive the identification information of the other port.
In one embodiment, the network manager is further configured to display the logical connection relationship between the network element ports by way of the virtual connection fiber.
Through the scheme, the invention can automatically discover the logical association between the network elements in different network element managers, and even can automatically discover the logical association between the network elements in different management domains.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the network connection automatic discovery system of the present invention.
Fig. 2 is a flowchart illustrating an embodiment of a network connection auto-discovery method according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention is provided aiming at the problem of logic association discovery among network elements in different network element managers.
Fig. 1 is a schematic structural diagram of an embodiment of the network connection automatic discovery system of the present invention. The network connection automatic discovery system can be applied to an OTN (optical transport network) transport network system, for example.
As shown in fig. 1, the network connection automatic discovery system is divided into three layers, an NE (network element) layer, an EMS (network element manager) layer, and an NMS (network manager) layer. The devices and functions of the layers are described separately below.
The NE layer is a physical device layer, and includes a plurality of devices such as the network element 11, and the like, and completes transmission and reception of service signals. The network element of the sending end is used for writing the identification information corresponding to the port of the network element into a service signal and sending the service signal to other network elements, and the network element of the receiving end is used for reading the identification information from the received service signal and reporting the read identification information to the network manager. The network element at the receiving end may write the identification information corresponding to the port of the network element into the operator-defined byte (i.e., TTI byte) of the OTUk (optical switching unit) overhead (SM segment overhead) of the service signal, and read the identification information from the operator-defined byte of the received service signal. All service signals transmitted in the OTN system contain the overhead byte information, so that the universality of the method is better. The TTI is a path tracking identifier, located in the first byte of the SM segment, and there are a total of 4 TTIs of 64 bytes in a multiframe. The TTI consists of three parts: a SAPI source access point indication, a DAPI destination access point indication, an Operator Specific Operator custom (or proprietary) part. The ID number information may be located in the Operator Specific byte portion. In addition, the network element may receive configuration information sent by the network element manager, where the configuration information includes corresponding identification information of the network element port, so as to obtain the identification information of the local network element port.
The EMS layer, as an intermediate layer, includes a plurality of element managers 12, and these element managers 12 may belong to the same management domain or different management domains, or may be provided by different vendors. The EMS layer is responsible for receiving and transmitting the configuration information from the NMS layer and forwarding the configuration information to the NE layer; meanwhile, the identification information reported by the NE network element is uploaded to the NMS layer.
The NMS layer is a control layer of the whole network, manages and configures the whole network, can manage a plurality of network element managers 12, and mainly comprises a network manager 13, the network manager 13 stores corresponding relationship information of network element ports of all network elements and identification information thereof, can issue unique identification information of each network element port to an NE layer through an EMS layer through configuration information, processes the identification information read from a received service signal and reported by a network element of the NE layer through the EMS layer, determines a network element port corresponding to reported identification information according to the corresponding relationship information of the network element port and the identification, and establishes a logical connection relationship between the network element port corresponding to the identification information and the network element port reporting the identification information. The logical connection relation between the network element ports can be displayed in a virtual connection optical fiber mode. The network manager 13 may also periodically analyze the network element port pair in a connected state, and delete the logical connection relationship of the network element port pair if the identification information sent by the network element port pair is different from the received identification information, or delete the logical connection relationship of the network element port pair if any one port of the network element port pair cannot receive the identification information of the other port.
Fig. 2 is a flowchart illustrating an embodiment of a network connection auto-discovery method according to the present invention. It is assumed here that the first network element belongs to a first network element manager and the second network element belongs to a second network element manager, i.e. the first network element and the second network element belong to different network element managers, and further, the first network element manager and the second network element manager may belong to different management domains. As shown in fig. 2, the method of the present embodiment includes:
s201, the network manager sends configuration information to a first network element managed by the network manager through the first network element manager, the configuration information comprises first identification information corresponding to a port of the first network element, the first network element writes the first identification information corresponding to the port of the first network element into TTI bytes of the service signal, and sends the service signal to the downstream.
S202, after receiving the service signal, the downstream second network element reads the first identifier information from the TTI byte of the service signal, and reports the first identifier information to the network manager through the second network element manager.
And simultaneously, the second network element writes the second identification information corresponding to the port of the second network element into the TTI byte of the service signal, completes the regeneration of the service signal and continues to send the service signal to the downstream. And if the third network element receives the service signal, reading the second identification information from the TTI byte of the service signal and reporting the second identification information to the network manager. The third network element may continue to send the traffic signal downstream with reference to the foregoing method until the traffic signal reaches the destination.
S203, the network manager periodically analyzes the identification information sent and received by each network element port, establishes a logical connection relation between the network element port pairs which send and receive the same identification information, and stores the logical connection relation into a service path.
For example, the network manager receives first identification information sent by the second network element, determines that the first identification information corresponds to the first network element port according to the correspondence information between the network element port and the identification, and establishes a logical connection relationship between the first network element port and the second network element port.
For another example, the network manager receives second identification information sent by a third network element, determines, according to the correspondence information between the network element port and the identification, that the second identification information corresponds to the second network element port, and establishes a logical connection relationship between the second network element port and the third network element port.
S204, the network manager periodically analyzes the network element port pair in the connection state, and deletes the logical connection relation of the network element port pair if the identification information sent by the network element port pair is different from the received identification information, or if any port in the network element port pair cannot receive the identification information of the other port.
Through the scheme, the invention can automatically discover the logical association between the network elements in different network element managers, and even can automatically discover the logical association between the network elements in different management domains.
An application example of the network connection auto-discovery method is described below. Referring to fig. 1, in the present application example, the network element A, B, C, D of administrative domain a is managed by EMS1, the network element E, F, G, H of administrative domain a is managed by EMS2, the network element I, J, K, L of administrative domain B is managed by EMS3, and the network element M, N, O, P of administrative domain B is managed by EMS 4. Administrative domain a and administrative domain B access the NMS. And the port 1 of the network element D is connected with the port 2 of the network element K through a physical optical fiber, and the EMS is configured to be in butt joint with the OTU. The identifier corresponding to port 1 of network element D is ID1, and the identifier corresponding to port 2 of network element K is ID 2. The network connection auto-discovery process is as follows:
the method comprises the following steps: the NMS layer stores all network element port information of the whole network, sends a configuration instruction to the EMS layer through a southbound interface, uniformly encodes, configures unique ID (identification) information for each network element port, and stores and establishes a corresponding relation information table between the equipment port and the ID.
Step two: the NE layer receives and executes the configuration information issued by the NMS layer, and the EMS layer writes the ID1 corresponding to the port 1 of the network element D into a service signal to be sent by the network element D through a private protocol, namely into the designated position of 33-64 bytes of the TTI part of the SM section of the OTUk electrical layer overhead.
Step three: the port 2 of the network element K under the management of the EMS3 in the management domain B receives and analyzes the traffic signal transmitted from the port 1 of the network element D under the management of the EMS1 in the management domain a, and reads the ID information-ID 1 of the port 1.
Step four: network element K sends ID1 to EMS3 for upload by EMS3 to the NMS over administrative domain B. And the NMS reads the ID1 transmitted by the EMS3, determines that the ID1 corresponds to the network element D by inquiring the corresponding relation between the network element port and the ID, confirms that the physical connection is established between the network element D and the network element K, displays the physical connection relation on a graphical maintenance interface in a virtual connection optical fiber mode, and stores the logical connection relation into a service path.
Step five: after the step two to four, the port 2 of the network element K writes the ID2 in the TTI byte of the SM segment of the OTUk electrical layer overhead of the service signal to be sent, completes the regeneration of the SM segment signal, continues to send to the downstream network element together with the service signal, and after the downstream network element receives the service signal, executes the steps according to the step three to five until the service signal reaches the end point.
Step six: and the NMS periodically analyzes the network element port pair in the connection state, and deletes the logical connection relation of the network element port pair if the ID sent by the network element port pair is different from the received ID or if any port in the network element port pair cannot receive the ID of the other port.
Through the scheme, the invention can automatically discover the logical association between the network elements in different network element managers, and even can automatically discover the logical association between the network elements in different management domains.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A method for automatically discovering network connections, comprising:
the first network element writes first identification information corresponding to a first network element port into an operator custom byte of OTUk overhead of a service signal, and sends the service signal through a first network element manager; the first network element belongs to a first network element manager, the second network element belongs to a second network element manager, and the first network element manager and the second network element manager belong to different management domains;
the second network element receiving the service signal reads first identification information from the operator-defined byte of the service signal and reports the first identification information to the network manager through the second network element manager;
the network manager receives first identification information sent by the second network element, determines that the first identification information corresponds to the first network element port according to the corresponding relation information of the network element port and the identification, and establishes a logical connection relation between the first network element port and the second network element port.
2. The method of claim 1,
the network manager periodically analyzes the network element port pair in a connection state, and deletes the logical connection relation of the network element port pair if the identification information sent by the network element port pair is different from the received identification information, or deletes the logical connection relation of the network element port pair if any one port of the network element port pair cannot receive the identification information of the other port.
3. The method of claim 1, further comprising:
the second network element writes second identification information corresponding to a second network element port into a service signal and sends the service signal;
the third network element receiving the service signal reads second identification information from the service signal and reports the second identification information to the network manager;
and the network manager receives second identification information sent by a third network element, determines that the second identification information corresponds to a second network element port according to the corresponding relation information of the network element port and the identification, and establishes a logical connection relation between the second network element port and the third network element port.
4. A method according to any of claims 1-3, characterized in that the network manager displays the logical connection between the network element ports by means of virtual connection fibres.
5. The method according to any one of claims 1 to 3,
the network manager sends configuration information to the network elements managed by the network manager, wherein the configuration information comprises identification information corresponding to the network element ports.
6. A network connection auto-discovery system, comprising: the network management system comprises a network manager, a plurality of network element managers and a plurality of network elements, wherein the network elements are respectively managed by different network element managers, and the different network element managers belong to different management domains;
the network element is used for writing identification information corresponding to the network element port into an operator-defined byte of OTUk overhead of a service signal, sending the service signal to other network elements through a network element manager for managing the network element, or reading the identification information from the operator-defined byte of the received service signal, and reporting the read identification information to the network manager through the network element manager for managing the network element;
the network element manager is used for forwarding the identification information reported by the network element to the network manager and forwarding the identification information issued by the network manager to the corresponding network element;
the network manager is used for issuing the identification information to the network element through the network element manager for managing the network element, receiving the identification information which is reported by the network element and is read from the received service signal through the network element manager for managing the network element, determining the network element port corresponding to the reported identification information according to the corresponding relation information of the network element port and the identification, and establishing the logical connection relation between the network element port corresponding to the identification information and the network element port reporting the identification information.
7. The system of claim 6,
the network manager is further configured to periodically analyze the network element port pair in a connected state, and delete the logical connection relationship of the network element port pair if the identification information sent by the network element port pair is different from the received identification information, or delete the logical connection relationship of the network element port pair if any one port of the network element port pair cannot receive the identification information of the other port.
8. The system of any one of claims 6-7, wherein the network manager is further configured to display the logical connection relationship between the network element ports by way of a virtual connection fabric.
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| CN110855479A (en) * | 2019-10-30 | 2020-02-28 | 中盈优创资讯科技有限公司 | Circuit discovery method and device |
| CN113099322B (en) * | 2020-01-08 | 2022-07-29 | 华为技术有限公司 | Optical fiber connection detection method and related equipment |
| CN115442268B (en) * | 2022-08-30 | 2023-06-09 | 烽火通信科技股份有限公司 | Network element port state detection and positioning system and method |
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