CN105933231B - UP MEP message processing method and system - Google Patents

UP MEP message processing method and system Download PDF

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Publication number
CN105933231B
CN105933231B CN201610470768.4A CN201610470768A CN105933231B CN 105933231 B CN105933231 B CN 105933231B CN 201610470768 A CN201610470768 A CN 201610470768A CN 105933231 B CN105933231 B CN 105933231B
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message
oam
mep
quick
information
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CN105933231A (en
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郭敏
谢海春
蒋汉柏
廖北平
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Hunan Hengmao Tech Ltd By Share Ltd
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Hunan Hengmao Tech Ltd By Share Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention provides a kind of UP MEP message processing method and system, OAM message is parsed in exchange chip, necessary OAM Information is obtained, according to necessary OAM Information, identifies the quick OAM message in OAM message, UP MEP look up table operations are carried out to quick OAM message, the address of UP MEP is obtained, and OAM engine is revised as in the destination port address of quick OAM message, according to the address of UP MEP, corresponding data in presetting database are read, and MEP state is combined to carry out OAM operation.In whole process, the quick OAM message in OAM message is identified, look up table operations are carried out to quick OAM message, the lookup of UP MEP is placed in the treatment process of packet switch, mitigate the look-up table burden of OAM engine, improve processing speed, realizes UP MEP message efficient process.

Description

UP MEP message processing method and system
Technical field
The present invention relates to computer communication technology fields, more particularly to UP MEP (Maintenance association End Point safeguards endpoint) message processing method and system.
Background technique
Ethernet technology has been obtained commonly used with advantages such as its good economy, intercommunity and ease for use.Operation Grade Ethernet becomes the important research field of current web technology, and Carrier Ethernet must provide good service management, event Hinder the functions such as detection, performance monitoring, and the core of this function is OAM (Operation Administration and Maintenance, operation management maintainance).
In recent years, with the development of MPLS (Multi-Protocol Label Switch, multiprotocol label switching) technology Maturation, and it is widely applied to transmission network field, PTN technology starts to be used by more and more operators.IETF (Internet Engineering Task Force, Internet Engineering Task group) extends original on the basis of T-MPLS MPLS technology becomes current MPLS-TP standard agreement race, and OAM also becomes the core content of MPLS-TP.It is popular at present MPLS-TP OAM there are two types of: one is based on ITU-Y1731, redefine for MPLS to be encapsulated into and adapt to MPLS-TP net The OAM of network, the rate that reciprocity end (peer) sends message are identical as ITU-Y1731；Another kind is based on BFD Service management, failure inspection are supported in the extension of (Bidirectional Forwarding Detection, two-way converting detection) The transmission frequency of the functions such as survey, performance monitoring, reciprocity end is more flexible, can be configured to the arbitrary value that 1 millisecond is unit.
In exchange chip used at present, chip is directly given the OAM message received to OAM engine and is handled, packet Include OAM message parsing, MEP is searched.Wherein, OAM message parsing largely with the basic analytical process of exchange chip Unanimously, the phenomenon that accordingly, there exist redundancies.In addition, OAM engine needs to read and write list item relevant to MEP lookup, so that message itself The processing time it is long, the message for needing to cache under the scene of OAM message burst flow is relatively more, needs additional message Memory space.
Summary of the invention
Based on this, it is necessary to it is lower for general UP MEP message processing method treatment effeciency, it is easy to appear showing for redundancy As providing a kind of efficient UP MEP processing method of reseptance and system.
A kind of UP MEP message processing method, comprising steps of
OAM message is parsed in exchange chip, obtains necessary OAM Information；
According to necessary OAM Information, the quick OAM message in OAM message is identified；
UP MEP look up table operations are carried out to quick OAM message, obtain the address of UP MEP, and by quick OAM message It is revised as OAM engine in destination port address；
According to the address of UP MEP, corresponding data in presetting database are read, and MEP state is combined to carry out OAM operation.
A kind of UP MEP message handling system, comprising:
Parsing module obtains necessary OAM Information for parsing in exchange chip to OAM message；
Identification module, for identifying the quick OAM message in OAM message according to necessary OAM Information；
Look-up table means, for obtaining the address of UP MEP to quick OAM message progress UP MEP look up table operations, and OAM engine is revised as in the destination port address of quick OAM message；
Operation module reads corresponding data in presetting database for the address according to UP MEP, and combines MEP shape State carries out OAM operation.
UP MEP message processing method of the present invention and system, parse OAM message in exchange chip, obtain necessary OAM Information the quick OAM message in OAM message is identified according to necessary OAM Information, UP is carried out to quick OAM message MEP look up table operations, obtain the address of UP MEP, and OAM engine, root are revised as in the destination port address of quick OAM message According to the address of UP MEP, corresponding data in presetting database are read, and MEP state is combined to carry out OAM operation.Whole process In, it identifies the quick OAM message in OAM message, look up table operations is carried out to quick OAM message, the lookup of UP MEP is placed on In the treatment process of packet switch, mitigate the look-up table burden of OAM engine, improve processing speed, realizes that UP MEP message is efficiently located Reason.
Detailed description of the invention
Fig. 1 is the flow diagram of UP MEP message processing method one embodiment of the present invention；
Fig. 2 is the flow diagram of second embodiment of UP MEP message processing method of the present invention；
Fig. 3 is the structural schematic diagram of UP MEP message handling system one embodiment of the present invention；
Fig. 4 is the structural schematic diagram of second embodiment of UP MEP message handling system of the present invention.
Specific embodiment
As shown in Figure 1, a kind of UP MEP message processing method, comprising steps of
S200: parsing OAM message in exchange chip, obtains necessary OAM Information.
In Parser (parsing) module of exchange chip, OAM message is parsed, and obtain necessary OAM Information, The information is transmitted to IGP (Ingress Process, entrance process), EGP (Egress Process exports process) module.Tool For body, OAM message mainly may include BFD message and CCM message there are many type, different types of OAM message its must The OAM Information wanted is not identical.Specifically, when OAM message is BFD message, yourDiscrimination information is obtained, when When OAM message is CCM message, mel, megId and mepId information are obtained.
S400: according to necessary OAM Information, the quick OAM message in OAM message is identified.
IGP module increases OAM message type classification, distinguishes quick OAM message according to type of message and OAM is reported at a slow speed Text.Message send association's processing to carry out corresponding operating in subsequent processing at a slow speed, and rapid message increases UP MEP look up table operations.Separately Outside, IGP module reads the message inbound port attribute carried in OAM message, obtains whether configure MEP information, if configuration, is pressed It is handled according to S400 mode, otherwise normally tables look-up and obtain exit port information.
S600: UP MEP look up table operations are carried out to quick OAM message, obtain the address of UP MEP, and quick OAM is reported It is revised as OAM engine in the destination port address of text.
For quick OAM message, then using the data in quick OAM message, UP is carried out in the MEP configuration of exchange chip MEP look up table operations get the address of UP MEP, and OAM engine are revised as in the destination port address of quick OAM message. In addition, EGP module reads the exit port attribute carried in quick OAM message, judge whether the port configures MEP.If configuration, Then according to S600 mode, otherwise, forwarded according to common message editing.
S800: according to the address of UP MEP, corresponding data in presetting database are read, and MEP state is combined to carry out OAM Operation.
In the quick OAM message that exchange chip is handled, OAM engine reads corresponding data according to the address of UP MEP Library data carry out OAM operation in conjunction with MEP state.
UP MEP message processing method of the present invention, parses OAM message in exchange chip, obtains necessary OAM Information identifies the quick OAM message in OAM message according to necessary OAM Information, carries out UP MEP lookup to quick OAM message Table handling, obtains the address of UP MEP, and OAM engine is revised as in the destination port address of quick OAM message, according to UP MEP Address, read presetting database in corresponding data, and combine MEP state carry out OAM operation.In whole process, OAM is identified Quick OAM message in message carries out look up table operations to quick OAM message, the lookup of UP MEP is placed on to the place of packet switch During reason, mitigate the look-up table burden of OAM engine, improve processing speed, realizes UP MEP message efficient process.
As shown in Fig. 2, step S800 includes: in one of the embodiments,
S820: according to the address of UP MEP, the message OAM head of quick OAM message is edited.
The OAM Information that EGP module is passed over IGP is quick OAM message editor OAM message head.Specifically, OAM Heading information includes: the data such as mepIdx and oamOffset.
S840: according to edited OAM message head, reading corresponding data in presetting database, and combine MEP state into Row OAM operation.
Edited OAM message head carries the address of UP MEP, and edited OAM message head is sent to OAM engine, OAM engine reads corresponding data in presetting database according to edited OAM message head, and MEP state is combined to carry out OAM Operation.
As shown in Fig. 2, in one of the embodiments, after step S820 further include:
S832: edited OAM message head is added to default original message head, acquisition is edited to preset original report Text.
The OAM Information that EGP module is passed over IGP, be quick OAM message editor OAM head, and be assembled into preset it is original Before header.
S834: quick OAM message and edited default original message are put into different queue, pass through hiberarchy scheduling Afterwards, it is respectively fed to corresponding processing module or network interface.
Common message is put into different queues from quick OAM message by Scheduler (scheduling) module, and passes through stratification After scheduling, it is sent into corresponding processing module or network interface.
OAM message is parsed in exchange chip in one of the embodiments, obtains necessary OAM Information Step includes:
Step 1: obtaining OAM message in exchange chip, and identifies OAM message type, and OAM message type includes BFD report Text and CCM message.
Step 2: parsing OAM message obtains yourDiscrimination information when OAM message is BFD message, when When OAM message is CCM message, mel, megId and mepId information are obtained.
Step 3: OAM offset is obtained.
Specifically, when OAM message type is BFD message, necessary OAM Information includes yourDiscrimination Information and OAM offset；When OAM message type be CCM message when, necessary OAM Information include mel information, megId information, MepId information and OAM offset.
UP MEP look up table operations are carried out to quick OAM message in one of the embodiments, obtain the ground of UP MEP Location, and the step of OAM engine is revised as in the destination port address of quick OAM message includes:
Step 1: identify that quick OAM message type, quick OAM message type include BFD message and CCM message.
Step 2: when quick OAM message is BFD message, search key mepIndex.
Step 3: when quick OAM message is CCM message, search key destPortGroup and destVlanId.
Step 4: UP MEP look up table operations are carried out to quick OAM message according to the keyword found, obtain UP MEP Address.
Step 5: OAM engine is revised as in the destination port address of quick OAM message.
Different keywords are searched for different types of quick OAM message, and UP is carried out according to the keyword found MEP look up table operations more meet practical UP MEP Message processing process, in addition also by the destination port address of quick OAM message It is revised as OAM engine, such UP MEP message no longer walks loopback path, is sent directly into OAM engine and is handled, so that UP MEP The treatment effeciency of message greatly promotes.
UP MEP Message processing of the present invention has the advantage that
1, identification judges UP MEP in EGP, and carries out corresponding entry lookup, mitigates the burden of tabling look-up of OAM engine.
2, UP MEP message no longer walks loopback path, is sent directly into OAM engine and is handled, so that the place of UP MEP message Reason efficiency greatly promotes.
3, OAM engine can be absorbed in the realization of OAM correlation function, improve the treatment effeciency of OAM message, and reduce Design difficulty reduces memory and uses.
As shown in figure 3, a kind of UP MEP message handling system, comprising:
Parsing module 200 obtains necessary OAM Information for parsing in exchange chip to OAM message.
Identification module 400, for identifying the quick OAM message in OAM message according to necessary OAM Information.
Look-up table means 600, for obtaining the address of UP MEP to quick OAM message progress UP MEP look up table operations, And OAM engine is revised as in the destination port address of OAM message.
Operation module 800 reads corresponding data in presetting database for the address according to UP MEP, and combines MEP State carries out OAM operation.
UP MEP message handling system of the present invention, parsing module 200 parse OAM message in exchange chip, obtain Necessary OAM Information is taken, identification module 400 identifies the quick OAM message in OAM message according to necessary OAM Information, searches Table module 600 carries out UP MEP look up table operations to quick OAM message, obtains the address of UP MEP, and by quick OAM message OAM engine is revised as in destination port address, and operation module 800 is read corresponding in presetting database according to the address of UP MEP Data, and MEP state is combined to carry out OAM operation.In whole process, the quick OAM message in OAM message is identified, to quick OAM Message carries out look up table operations, and the lookup of UP MEP is placed in the treatment process of packet switch, and the look-up table for mitigating OAM engine is negative Load improves processing speed, realizes UP MEP message efficient process.
As shown in figure 4, operation module 800 includes: in one of the embodiments,
Heading edit cell 820 edits the OAM message head of quick OAM message for the address according to UP MEP.
Operating unit 840 for reading corresponding data in presetting database according to edited OAM message head, and is tied It closes MEP state and carries out OAM operation.
As shown in figure 4, operation module 800 in one of the embodiments, further include:
Original message edit cell 832 is obtained for edited OAM message head to be added to default original message head Edited default original message.
Hierarchical Components 834 lead to for quick OAM message and edited default original message to be put into different queue After crossing hiberarchy scheduling, it is respectively fed to corresponding processing module or network interface.
Parsing module 200 includes: in one of the embodiments,
Type of message recognition unit for obtaining OAM message in exchange chip, and identifies OAM message type, OAM report Literary type includes BFD message and CCM message.
Resolution unit, when OAM message is BFD message, obtains yourDiscrimination for parsing OAM message Information obtains mel, megId and mepId information when OAM message is CCM message.
OAM offset acquiring unit, for obtaining OAM offset.
Look-up table means 600 include: in one of the embodiments,
Recognition unit, quick OAM message type, quick OAM message type include BFD message and CCM message for identification.
First keyword searching unit is used for when quick OAM message is BFD message, search key mepIndex.
Second keyword searching unit is used for when quick OAM message is CCM message, search key DestPortGroup and destVlanId.
Look-up table unit is obtained for carrying out UP MEP look up table operations to quick OAM message according to the keyword found Take the address of UP MEP.
Unit is modified in address, for OAM engine to be revised as in the destination port address of quick OAM message.
In order to further explain in detail the technical solution of UP MEP message processing method of the present invention and system and beneficial to effect Fruit will be explained below using specific example.
When receiving OAM message on port, it is sent to inside exchange chip by RxTdm.In the Parser mould of exchange chip In block, according to OAM message encapsulation format that may be present, packet parsing is carried out.By the inquiry to inbound port attribute, confirmation should Whether port needs to receive the OAM message, if you do not need to receiving, is then handled according to common message.Do not have for inbound port There is the case where configuration MEP, the OAM message received can find exit port information in IGP according to forwarding table.Then, text of delivering newspaper arrives EGP Module performs corresponding processing.In the increased UP MEP searching module of EGP module, first according to exit port attribute information, judgement Whether the exit port configures MEP, if configuration, shows that the MEP is UP MEP, needs to carry out the lookup of UP MEP.
The search procedure of UP MEP is as follows: according to the exit port information obtained in IGP, reading out port attribute.Check report Whether text is OAM message, for OAM message, judges whether exit port is configured with MEP, and whether message information meets UP MEP Receive requirement.If it is needing the exit port to need received UP MEP message, with { destPortGroup, destVlanId } Information forms UP MEP search key, searches UP MEP list item.Judgement table look-up return MEP index it is whether effective, if there is Effect, modifies the exit port information of message, and message is put into scheduling queue and waits scheduler schedules.
The OAM message recalled by scheduler can the head affix OAM, including mepIndex, oamType, The information such as oamOffset.The message that OAM engine is received carries out information fractionation, is split as info and two parts packet, and Parse the information such as mepIndex, oamType, oamOffset in info.If message is BFD, from packet's OamOffset byte starts, and carries out the parsing of BFD message, corresponding MEP list item is read using mepIndex field, to list item State machine be updated.If message is CCM, since the oamOffset byte of packet, the parsing of CCM message is carried out, Corresponding MEP list item is read using mepIndex field, the state machine of list item is updated.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (10)

1. a kind of UP MEP message processing method, which is characterized in that comprising steps of
OAM message is parsed in exchange chip, obtains necessary OAM Information, the necessary OAM Information includes YourDiscrimination information, mel information, megId information, mepId information and OAM offset；
According to the necessary OAM Information, the quick OAM message in the OAM message is identified；
UP MEP look up table operations are carried out to the quick OAM message, obtain the address of UP MEP, and the quick OAM is reported It is revised as OAM engine in the destination port address of text；
According to the address of the UP MEP, corresponding data in presetting database are read, and MEP state is combined to carry out OAM operation.
2. UP MEP message processing method according to claim 1, which is characterized in that the ground according to the UP MEP Corresponding data in presetting database are read in location, and the step of combining MEP state to carry out OAM operation includes:
According to the address of the UP MEP, the OAM message head of the quick OAM message is edited；
According to the edited OAM message head, corresponding data in presetting database are read, and MEP state is combined to carry out OAM Operation.
3. UP MEP message processing method according to claim 2, which is characterized in that the ground according to the UP MEP After the step of location, the OAM head of editor's quick OAM message further include:
The edited OAM message head is added to default original message head, obtains edited default original message；
The quick OAM message and the edited default original message are put into different queue, after hiberarchy scheduling, It is respectively fed to corresponding processing module or network interface.
4. UP MEP message processing method according to claim 1, which is characterized in that it is described in exchange chip to OAM The step of message is parsed, and necessary OAM Information is obtained include:
The OAM message is obtained in exchange chip, and identifies the OAM message type, and the OAM message type includes BFD Message and CCM message；
The OAM message is parsed, when the OAM message is BFD message, yourDiscrimination information is obtained, works as institute State OAM message be CCM message when, obtain mel, megId and mepId information；
Obtain OAM offset.
5. UP MEP message processing method according to claim 1, which is characterized in that described to the quick OAM message UP MEP look up table operations are carried out, the address of UP MEP is obtained, and the destination port address of the quick OAM message is revised as The step of OAM engine includes:
Identify the quick OAM message type, the quick OAM message type includes BFD message and CCM message；
When the quick OAM message is BFD message, search key mepIndex；
When the quick OAM message is CCM message, search key destPortGroup and destVlanId；
UP MEP look up table operations are carried out to the quick OAM message according to the keyword found, obtain the address of UP MEP；
OAM engine is revised as in the destination port address of the quick OAM message.
6. a kind of UP MEP message handling system characterized by comprising
Parsing module obtains necessary OAM Information for parsing in exchange chip to OAM message, described necessary OAM Information includes yourDiscrimination information, mel information, megId information, mepId information and OAM offset；
Identification module, for identifying the quick OAM message in the OAM message according to the necessary OAM Information；
Look-up table means, for obtaining the address of UP MEP to the quick OAM message progress UP MEP look up table operations, and OAM engine is revised as in the destination port address of the OAM message；
Operation module reads corresponding data in presetting database for the address according to the UP MEP, and combines MEP shape State carries out OAM operation.
7. UP MEP message handling system according to claim 6, which is characterized in that the operation module includes:
Heading edit cell edits the OAM message head of the quick OAM message for the address according to the UP MEP；
Operating unit for reading corresponding data in presetting database according to the edited OAM message head, and combines MEP state carries out OAM operation.
8. UP MEP message handling system according to claim 7, which is characterized in that the operation module further include:
Original message edit cell is edited for the edited OAM message head to be added to default original message head Default original message afterwards；
Hierarchical Components lead to for the quick OAM message and the edited default original message to be put into different queue After crossing hiberarchy scheduling, it is respectively fed to corresponding processing module or network interface.
9. UP MEP message handling system according to claim 6, which is characterized in that the parsing module includes:
Type of message recognition unit for obtaining the OAM message in exchange chip, and identifies the OAM message type, institute Stating OAM message type includes BFD message and CCM message；
Resolution unit, when the OAM message is BFD message, is obtained for parsing the OAM message YourDiscrimination information obtains mel, megId and mepId information when the OAM message is CCM message；
OAM offset acquiring unit, for obtaining OAM offset.
10. UP MEP message handling system according to claim 6, which is characterized in that the look-up table means include:
Recognition unit, the quick OAM message type for identification, the quick OAM message type includes BFD message and CCM Message；
First keyword searching unit is used for when the quick OAM message is BFD message, search key mepIndex；
Second keyword searching unit is used for when the quick OAM message is CCM message, search key DestPortGroup and destVlanId；
Look-up table unit is obtained for carrying out UP MEP look up table operations to the quick OAM message according to the keyword found Take the address of UP MEP；
Unit is modified in address, for OAM engine to be revised as in the destination port address of the quick OAM message.
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CN108551407A (en) * 2018-06-14 2018-09-18 烽火通信科技股份有限公司 A kind of processing method and system of Operations, Administration and Maintenance OAM message
CN109587030A (en) * 2018-12-03 2019-04-05 盛科网络（苏州）有限公司 Safeguard the lookup method and device, storage medium of endpoint MEP
CN109587079B (en) * 2018-12-14 2020-11-20 北京物芯科技有限责任公司 OAM service processing system and method
CN111294358B (en) * 2020-02-21 2021-08-31 苏州盛科通信股份有限公司 Message processing method and device

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