CN102082711A - Method for preventing dithering during automatic message detection and network element equipment - Google Patents
Method for preventing dithering during automatic message detection and network element equipment Download PDFInfo
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- CN102082711A CN102082711A CN2011100297245A CN201110029724A CN102082711A CN 102082711 A CN102082711 A CN 102082711A CN 2011100297245 A CN2011100297245 A CN 2011100297245A CN 201110029724 A CN201110029724 A CN 201110029724A CN 102082711 A CN102082711 A CN 102082711A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
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Abstract
The invention provides a method for preventing dithering during automatic message detection and network element equipment. The method comprises the following steps of: if detecting that the encapsulation mode of a message which is sent by an opposite terminal is changed and the current link does not support the changed encapsulation mode of the message, judging whether the number of the messages of which the encapsulation modes are changed and which are received in first preset time reaches the threshold value; and if so, correcting the encapsulation mode of the message to be the changed encapsulation mode of the message. By the method, the dithering in the process of automatic identification of the encapsulation of an asynchronous transfer mode (ATM) and Ethernet can be effectively prevented.
Description
Technical field
The present invention relates to network communication field, particularly, is in a kind of process of the encapsulation that is implemented in automatic detection ATM and Ethernet, prevents method and the network element device shaken.
Background technology
Along with the extensive use of Ethernet, more and more to the demand of user and the automatic management of equipment, require also more and more higher.ATM(Asynchronous Transfer Mode, asynchronous transfer mode) the automatic detection of encapsulation and Ethernet encapsulation is that network element is judged DSL(Digital Subscriber Line automatically by analytic message, digital subscriber line) a kind of means of user's message packaged type and dial mode, reach the purpose of user port dial mode etc. on the automatic configuration network element, make the user need configuration that network element device is carried out still less when in use, and can revise user's configuration flexibly, and not need network element is changed.
But in the process of the packaged type that detects ATM and Ethernet automatically, may be owing to situations such as user side instabilities, the message that causes ATM and two kinds of packaged types of Ethernet occurring alternately sends, thereby the situation of shake occurs.When jitter conditions occurring, port status needs to reset, and may cause situations such as interruption of network short time and needs dial again.Therefore need the influence that corresponding method goes to avoid preferably shaking generation.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method and network element device of shaking of preventing in automatic detection messages process, occur shake in the automatic identifying effectively to avoid ATM and Ethernet to encapsulate.
In order to solve the problems of the technologies described above, the invention provides a kind of method of shaking in the detection messages process of preventing, comprising:
If detecting the encapsulation mode of the message of opposite end transmission changes, and detect the message encapsulation mode after current link is not supported to change, judge then whether the number that receives the message that encapsulation mode changes in first scheduled time reaches threshold value, if reach, then the message encapsulation mode is revised as the message encapsulation mode after the described variation.
Further, said method also has following characteristics:
The step that the described encapsulation mode that detects the message of opposite end transmission changes comprises: the encapsulation mode that detects the message of opposite end transmission changes ATM into from the Ethernet encapsulation mode;
The step of the message encapsulation mode after the current link of described detection is not supported to change comprises: send ATM OAM loopback message to described opposite end, if do not receive ATM OAM loopback response message in second scheduled time, judge that then current link do not support ATM.
Further, said method also has following characteristics:
The step that the described encapsulation mode that detects the message of opposite end transmission changes comprises: the encapsulation mode that detects the message of opposite end transmission changes the Ethernet encapsulation mode into from ATM;
The step of the message encapsulation mode after the current link of described detection is not supported to change comprises: send ATM OAM loopback message to the opposite end, if in second scheduled time, receive ATM OAM loopback response message, judge that then current link do not support the Ethernet encapsulation mode.
Further, said method also has following characteristics: the OAM type field in the described ATM OAM loopback message is 0001, and the function type field is 1000.
In order to address the above problem, the present invention also provides a kind of network element device, wherein, comprising:
Detection module is used for if detecting the encapsulation mode of the message of opposite end transmission changes, and detects the message encapsulation mode after current link is not supported to change, and then triggers judge module;
Described judge module is used to judge whether the number that receives the message that encapsulation mode changes in first scheduled time reaches threshold value, if reach, then triggers modified module;
Described modified module is used for the message encapsulation mode is revised as message encapsulation mode after the described variation.
Further, said network element equipment also has following characteristics: it is to change ATM into from the Ethernet encapsulation mode that the encapsulation mode of described message changes,
Described judge module comprises:
Transmitting element is used for sending ATM OAM loopback message to described opposite end;
Receiving element is used for not receiving ATM OAM loopback response message in second scheduled time, then trigger judging unit,
Described judging unit is used to judge that current link do not support ATM.
Further, said network element equipment also has following characteristics: it is to change the Ethernet encapsulation mode into from ATM that the encapsulation mode of described message changes,
Described judge module comprises:
Transmitting element is used for sending ATM OAM loopback message to described opposite end;
Receiving element is used for receiving ATM OAM loopback response message in second scheduled time, then trigger judging unit,
Described judging unit is used to judge that current link do not support the Ethernet encapsulation mode.
The invention provides a kind of method and network element device of shaking of in automatic detection messages encapsulation mode process, preventing, can effectively avoid in ATM and the automatic identifying of Ethernet encapsulation mode, the influence that jitter conditions is brought occurring.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the network element device of the embodiment of the invention;
Fig. 2 is the flow chart that prevents the method for shaking in the detection messages process of the present invention;
Fig. 3 is the flow chart that prevents the method for shaking in the detection messages process of the embodiment of the invention;
Fig. 4 is the schematic diagram of the form of ATM OAM Loopback cell;
Fig. 5 is the schematic diagram of form of the function field undetermined of ATM OAMLoopback cell;
Fig. 6, Fig. 7 use the flow chart that prevents the method for shaking in the detection messages process of example for the present invention.
Embodiment
Using ATM encapsulation and Ethernet to encapsulate automatic identification mode at network element device provides when serving to the user, if the user replaces or the message of two kinds of encapsulation modes of intermittent transmission, the situation that just occurs shake easily, if can not effective recognition go out the current jitter conditions that occurs, to cause user network situations such as temporary transient interruption often to occur, consider the practical application of automatic detection ATM encapsulation and Ethernet encapsulation, the present invention is under the situation of existing protocol and application, and a kind of method of shaking in the testing process of preventing is provided.
In order to understand the present invention better, the present invention is done to describe further below in conjunction with the drawings and specific embodiments.
Fig. 1 is the schematic diagram of the network element device of the embodiment of the invention, and as shown in Figure 1, the network element device of present embodiment comprises: detection module, judge module and modified module, wherein,
Detection module is used for if detecting the encapsulation mode of the message of opposite end transmission changes, and detects the message encapsulation mode after current link is not supported to change, and then triggers judge module;
Described judge module is used to judge whether the number that receives the message that encapsulation mode changes in first scheduled time reaches threshold value, if reach, then triggers modified module;
Described modified module is used for the message encapsulation mode is revised as message encapsulation mode after the described variation.
In the present embodiment, it can be to change ATM into from the Ethernet encapsulation mode that the encapsulation mode that described detection module detects the message that the opposite end sends changes, and perhaps changes the Ethernet encapsulation mode into from ATM.
Described judge module can also comprise:
Transmitting element is used for sending ATM OAM loopback message to described opposite end;
Receiving element is used for receiving ATM OAM loopback response message in second scheduled time,
Judging unit is used for whether receiving ATM OAM loopback response message according to receiving element and judges whether current link supports ATM.
Fig. 2 is the flow chart that prevents the method for shaking in the detection messages process of the present invention, and as shown in Figure 2, this method comprises following step:
S10, the encapsulation mode that detects the message that the opposite end sends change, and detect the message encapsulation mode after current link is not supported to change;
S20, judge whether the number receive the message that encapsulation mode changes in first scheduled time reaches threshold value,, then the message encapsulation mode is revised as the message encapsulation mode after the described variation if reach.
The embodiment of the invention is to support that detecting the opposite end automatically is ATM encapsulation or Ethernet encapsulation, and the system that supports corresponding encapsulation automatically is an example, two ends (local terminal and opposite end) that connecting for example, in communication process, if it is the ATM encapsulation that local terminal detects the message of opposite end transmission, local terminal is the ATM encapsulation with self adaptation so, in the communication process of back, local terminal will send the message of ATM encapsulation, up to finding that the opposite end is at the message that sends the Ethernet encapsulation; Same, be the Ethernet encapsulation if local terminal detects the message of opposite end transmission, local terminal is the Ethernet encapsulation with self adaptation so, and in the communication process of back, local terminal will send the message of Ethernet encapsulation, up to finding the message of opposite end in transmission ATM encapsulation.
The embodiment of the invention a kind of prevents from the method for shaking from as shown in Figure 3, to comprise following step in automatically detecting ATM encapsulation and Ethernet encapsulation process:
S301, local terminal with process to end communication in, whether change according to the encapsulation mode of content of message detection messages;
S302 changes if detect the packaged type of the message of opposite end transmission, then writes down this variation, for example, is from Ethernet encapsulation changing into ATM encapsulation, or from the encapsulation of ATM encapsulation changing into Ethernet.Sending an ATM OAM Loopback(loopback afterwards) message is to the opposite end.
ATM oam cell form as shown in Figure 4, comprise: ATM cell head (5 byte), OAM type (4 bit), function type (4 bit), function field undetermined (45 byte), reserved field (6 bit) and CRC(Cyclic Redundancy Check, cyclic redundancy check (CRC)) field fields such as (10 bits).The form of the function field undetermined of ATM OAM Loopback cell, as shown in Figure 5, comprise loopback ID(sign) (1 byte), correlating markings (4 byte), LB(loopback) position ID(is optional) (16 byte), source ID(be optional) contents such as (16 bytes).
OAM(Operation Administration Management wherein, Operation Administration and Maintenance) type field is 0001, and the function type field is 1000.
S303 waits for receiving the response of Loopback replay(loopback) message, the stand-by period can be set, so that the maximum duration of waiting for can be short as far as possible,, then turn to step S304 if in the time of restriction, received Loopback replay message; If do not receive, then turn to step 305.
S304 if received Loopback replay message in the time of restriction, illustrates current link support ATM encapsulation.If the variation of the packaged type that writes down previously is from Ethernet encapsulation becoming ATM encapsulation, the packaged type that so directly changes local terminal is the ATM encapsulation, with ToEthCounter(Ethernet package count device) and ToAtmCounter(ATM package count device) put 0, and do corresponding configuration; If it is to become Ethernet encapsulation encapsulation from ATM that the packaged type that writes down previously changes, so earlier the ToEthCounter counter is added 1, judge then whether ToEthCounter reaches threshold value, if do not reach, then remain running in ATM, otherwise ToEthCounter and ToAtmCounter are put 0, and the modification present mode is the Ethernet encapsulation mode.The purpose of this counter is to be the Ethernet mode in order to prevent that the opposite end from promptly will revise packaged type, but supports the situation of ATM OAM Loopback.
S305 if do not receive Loopback replay in the time of restriction, illustrates that current link do not support ATM encapsulation.If it is from Ethernet encapsulation becoming ATM encapsulation that the packaged type that writes down previously changes, so earlier counter ToAtmCounter is added 1, judge afterwards whether ToAtmCounter reaches threshold value, if do not have, then continue operation Ethernet pattern, otherwise ToAtmCounter and ToEthCounter are put 0, and the modification present mode is ATM.Here judge that counter is in order to prevent that the opposite end from not supporting ATM OAM Loopback, in this case, also can be converted to the ATM pattern automatically from the Ethernet pattern; If it is from the encapsulation of ATM encapsulation becoming Ethernet that the packaged type that writes down previously changes, so ToEthCounter and ToAtmCounter is put 0, and the local terminal packaged type is revised as the Ethernet encapsulation.
Describing realization provided by the invention below in detail prevents from detecting the application example that occurs the method for shake in ATM and the Ethernet encapsulation process automatically.
As shown in Figure 6, suppose that local terminal and opposite end before changing packaged type, all operate in the ATM pattern.
Step 401: the opposite end packaged type is changed into the Ethernet encapsulation, has sent the message of an Ethernet encapsulation;
Step 402: local terminal detects the variation of packaged type, sends an ATM OAM Loopback request message;
Step 403: because the opposite end switches to the Ethernet packaged type, so do not reply ATM OAM Loopback request.Local terminal can wait for that ATM OAM Loopback replay is overtime, and packaged type is set is Ethernet encapsulation to local terminal afterwards;
Step 404: local terminal and opposite end all operate under the Ethernet encapsulation mode, and opposite end modification this moment packaged type is the ATM encapsulation, and begins to send the message of ATM encapsulation;
Step 405: local terminal detects the message packaged type and switches to the ATM encapsulation from the Ethernet encapsulation, sends an ATM OAM Loopback request message to the opposite end;
Step 406: receive the ATM OAM Loopback replay message that reply the opposite end in the time-out time, it is ATM that local terminal switches packaged type;
More than be the normal situation of switching, if jitter conditions, for example under the ATM packaged type, the opposite end has the message of Ethernet encapsulation to send, and processing procedure as shown in Figure 7 then may occur:
Step 501: local terminal and opposite end all operate under the ATM packaged type, and this moment, the opposite end sent the message of an Ethernet encapsulation, but the opposite end remains in fact and operates under the ATM packaged type;
Step 502: local terminal detects the message packaged type and switches to the Ethernet mode from ATM, so send an ATM OAM Loopback request message to the opposite end;
Step 503: because the opposite end still operates under the ATM, so after receiving ATM OAM Loopback request message, ATM OAM Loopback replay will be replied in the opposite end, local terminal will still operate under the ATM packaged type after receiving this message.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Below only be the preferred embodiments of the present invention; certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (7)
1. method that prevents to shake in the detection messages process comprises:
If detecting the encapsulation mode of the message of opposite end transmission changes, and detect the message encapsulation mode after current link is not supported to change, judge then whether the number that receives the message that encapsulation mode changes in first scheduled time reaches threshold value, if reach, then the message encapsulation mode is revised as the message encapsulation mode after the described variation.
2. the method for claim 1 is characterized in that:
The step that the described encapsulation mode that detects the message of opposite end transmission changes comprises: the encapsulation mode that detects the message of opposite end transmission changes ATM into from the Ethernet encapsulation mode;
The step of the message encapsulation mode after the current link of described detection is not supported to change comprises: send ATM OAM loopback message to described opposite end, if do not receive ATM OAM loopback response message in second scheduled time, judge that then current link do not support ATM.
3. the method for claim 1 is characterized in that:
The step that the described encapsulation mode that detects the message of opposite end transmission changes comprises: the encapsulation mode that detects the message of opposite end transmission changes the Ethernet encapsulation mode into from ATM;
The step of the message encapsulation mode after the current link of described detection is not supported to change comprises: send ATM OAM loopback message to the opposite end, if in second scheduled time, receive ATM OAM loopback response message, judge that then current link do not support the Ethernet encapsulation mode.
4. the method for claim 1, it is characterized in that: the OAM type field in the described ATM OAM loopback message is 0001, and the function type field is 1000.
5. a network element device is characterized in that, comprising:
Detection module is used for if detecting the encapsulation mode of the message of opposite end transmission changes, and detects the message encapsulation mode after current link is not supported to change, and then triggers judge module;
Described judge module is used to judge whether the number that receives the message that encapsulation mode changes in first scheduled time reaches threshold value, if reach, then triggers modified module;
Described modified module is used for the message encapsulation mode is revised as message encapsulation mode after the described variation.
6. network element device as claimed in claim 5 is characterized in that: it is to change ATM into from the Ethernet encapsulation mode that the encapsulation mode of described message changes,
Described judge module comprises:
Transmitting element is used for sending ATM OAM loopback message to described opposite end;
Receiving element is used for not receiving ATM OAM loopback response message in second scheduled time, then trigger judging unit,
Described judging unit is used to judge that current link do not support ATM.
7. network element device as claimed in claim 5 is characterized in that: it is to change the Ethernet encapsulation mode into from ATM that the encapsulation mode of described message changes,
Described judge module comprises:
Transmitting element is used for sending ATM OAM loopback message to described opposite end;
Receiving element is used for receiving ATM OAM loopback response message in second scheduled time, then trigger judging unit,
Described judging unit is used to judge that current link do not support the Ethernet encapsulation mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100297245A CN102082711A (en) | 2011-01-27 | 2011-01-27 | Method for preventing dithering during automatic message detection and network element equipment |
| PCT/CN2011/075948 WO2012100492A1 (en) | 2011-01-27 | 2011-06-20 | Method for preventing vibration during automatic message detection process and network element device thereof |
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| CN2011100297245A CN102082711A (en) | 2011-01-27 | 2011-01-27 | Method for preventing dithering during automatic message detection and network element equipment |
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| WO2012100492A1 (en) * | 2011-01-27 | 2012-08-02 | 中兴通讯股份有限公司 | Method for preventing vibration during automatic message detection process and network element device thereof |
| CN109167726A (en) * | 2018-08-23 | 2019-01-08 | 新华三技术有限公司 | Data prefetching method, device and the network equipment of message |
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- 2011-06-20 WO PCT/CN2011/075948 patent/WO2012100492A1/en active Application Filing
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| WO2012100492A1 (en) | 2012-08-02 |
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Application publication date: 20110601 |