WO2010133057A1 - 扩展rdi报文和扩展bdi报文的传输处理方法和装置 - Google Patents
扩展rdi报文和扩展bdi报文的传输处理方法和装置 Download PDFInfo
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- WO2010133057A1 WO2010133057A1 PCT/CN2009/074153 CN2009074153W WO2010133057A1 WO 2010133057 A1 WO2010133057 A1 WO 2010133057A1 CN 2009074153 W CN2009074153 W CN 2009074153W WO 2010133057 A1 WO2010133057 A1 WO 2010133057A1
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- Prior art keywords
- message
- extended
- bdi
- tlv
- node
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Classifications
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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
-
- 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]
Definitions
- the present invention relates to the field of operation management and maintenance (OAM) technology in a multi-protocol label switching (MPLS) network, and in particular, to an extended remote fault indication (RDI)
- OAM operation management and maintenance
- RDI extended remote fault indication
- BDI backward fault indication
- SDH synchronous digital Hierarchy
- OAM operational management and maintenance
- the main purpose of the present invention is to provide a method and an apparatus for processing a BDI extended message to solve the problem of poor device compatibility and interoperability caused by the extension of the OAM function in the prior art. The problem.
- the present invention provides a method for processing an extended RDI packet, the method comprising: a multi-protocol label switching end node on an MPLS transmission path generating an extended remote fault indication RDI message as needed; and according to the extended RDI ⁇ And the path identifier ID corresponding to the text is sent along the MPLS transmission path; the node that receives the extended RDI message on the MPLS transmission path determines that the extended RDI message needs to be processed.
- the type length value TLV (Type Length Value) in the extended RDI text is identified; and the identifiable TLV 4 text is analyzed and processed.
- the present invention provides a transmission processing method for extending BDI 4, the method comprising: a multi-protocol label switching end node on an MPLS transmission path generating an extended backward fault indication BDI message as needed; and according to the extended BDI ⁇ The path identifier ID corresponding to the text sends the extended BDI packet along the MPLS transmission path; when the node that receives the extended BDI packet on the MPLS transmission path determines that the extended BDI packet needs to be processed And identifying a type length value TLV message in the extended BDI message; and analyzing and processing the identifiable TLV 4 message.
- the end node generates the extended BDI packet as required: the end node encapsulates the required operation management and maintenance OAM function information by means of the TLV to obtain a TLV message; and one or more of the same processing node
- the TLV packet is encapsulated into the same extended BDI packet.
- the method further includes: determining, by the node that receives the extended BDI packet, whether the received extended BDI packet needs to be processed, specifically: forwarding the outer time TTL field on the label of the outer BDI packet If the value of the field is 0, it is judged that the extended BDI message needs to be processed; if the value of the field is not 0, it is judged that the BDI 4 message is not processed.
- the processing node address information carried in the BDI packet is matched with the address information of the node that receives the BDI extension packet, and if the two are consistent, it is determined that the extended BDI packet needs to be performed. Processing; if the two are inconsistent, it is judged that the extended BDI • t ⁇ text does not need to be processed.
- the node that receives the extended BDI message determines that the extended BDI message does not need to be entered.
- the method further comprises: the node forwarding the extended BDI message along the MPLS transmission path to a next node adjacent to the node.
- the identifying the TLV 4 ⁇ text in the extended BDI 4 specifically: matching the Type field in the TLV message with the Type field stored by the node, and if yes, the node can The TLV 4 message is identified; if the match is not available, the node is not able to identify the TLV message, and discards the unrecognizable TLV message.
- the present invention further provides a transmission processing device for extending an RDI message, the device comprising: a message processing module and a TLV analysis processing module, wherein the message processing module is configured to receive an extended RDI message generated by the end node And determining whether the processing is required, and when the process is determined to be processed, the RDI message is provided to the TLV analysis processing module; and the TLV analysis processing module is configured to use the TLV message in the extended RDI 4 Identify and analyze and process the TLV 4 identities that can be identified.
- the present invention further provides a transmission processing device for extending a BDI message, the device comprising: a message processing module and a TLV analysis processing module, wherein the message processing module is configured to receive an extended BDI message generated by the end node And determining whether the processing is required, and when the process is determined to be processed, the BDI message is provided to the TLV analysis processing module; and the TLV analysis processing module is configured to use the TLV message in the extended BDI 4 Identify and analyze and process the TLV 4 identities that can be identified.
- the device further includes: a message generating module, configured to generate an extended BDI message according to the need, and provide the extended BDI message to the message processing module; the fourth file processing module is further configured to: according to the extended BDI 4 The path ID transmits the extended BDI 4 along the MPLS transmission path.
- the processing module is further configured to forward the extended BDI packet along an MPLS transmission path when determining that the received extended BDI 4 message does not need to be processed; the TLV analysis processing module further For reporting the unrecognizable TLV when the TLV message cannot be identified Discard.
- the invention provides an extended RDI 4 ⁇ and extended BDI 4 ⁇ transmission processing method and device, and encapsulates some newly added OAM function information in the form of a type length value (TLV) in an extended RDI 4 ⁇ or
- TLV type length value
- the BDI 4 is extended and transmitted on the MPLS transmission path; this can not only notify the opposite node of the MPLS transmission path by extending the RDI 4 or the extended BDI 4, but also can perform the link.
- New OAM functions such as performance measurement and clock synchronization avoid the need to add new OAM 4 files separately, ensuring compatibility and interoperability with the original MPLS devices, and avoiding the inability of the original MPLS devices to recognize such The problem of error handling occurs in the new OAM message.
- FIG. 1 is a schematic diagram of a data structure of a TLV message
- FIG. 2 is a schematic diagram of a data structure of an extended BDI message according to the present invention
- FIG. 3 is a flowchart of a method for processing an extended RDI message according to the present invention
- 4 is a flowchart of a method for processing transmission of an extended BDI packet
- FIG. 5 is a schematic diagram of an MPLS transmission path
- FIG. 6 is a flowchart of a method for processing an extended BDI packet according to an embodiment of the present invention
- the method for transmitting and processing an extended RDI 4 message mainly includes the following steps: Step 301: An end node on an MPLS transmission path generates an extended RDI message according to requirements, and according to the extended RDI. The path ID corresponding to the message is sent along the MPLS transmission path. Step 302: The node that receives the extended RDI message on the MPLS transmission path determines the extension of the RDI 4 message when it is determined to The TLV 4 text in the RDI 4 text is identified, and the identifiable TLV ⁇ 3 ⁇ 4 text is analyzed and processed.
- some newly added OAM function information is encapsulated in the extended RDI ⁇ 3 ⁇ 4 text in the form of a type length value (TLV), and is transmitted on the MPLS transmission path; thus, not only the RDI message can be extended to the MPLS transmission path.
- the peer node performs fault information notification, and can also perform new OAM functions such as link performance measurement and clock synchronization, which avoids the need to separately add new OAM 4 files, ensuring compatibility with the original MPLS device. And the interoperability also avoids the problem of error handling due to the inability of the original MPLS device to recognize the new OAM message.
- multiple TLC encapsulation methods can be used for the same processing.
- the TLV 4 of the node is encapsulated into the same extended RDI 4 message, which can reduce the number of OAM message transmissions and improve the efficiency of link transmission.
- the RDI 4 text is a bidirectional 4 ⁇ text, which supports the bidirectional processing function, while the traditional BDI 4 ⁇ text is a one-way message, and only supports the one-way processing function.
- the bidirectional RDI message and the single The traditional BDI messages are applicable.
- the following specific embodiments mainly describe the traditional BDI as an example, and the traditional BDI 4 texts in the specific embodiments may be extended to RDI files.
- the invention expands the existing BDI message and implements some new OAM functions by extending the BDI message. Specifically, a new OAM function information is encapsulated in a TLV manner to form a TLV message. As shown in FIG.
- TLV 4 ⁇ Type (Type), Length (Length) and information data are composed of three fields; then one or more TLV messages having the same processing node are encapsulated into the same extended BDI message, as shown in FIG. 2, which is the data of the extended BDI 4 file of the present invention.
- FIG. 2 is the data of the extended BDI 4 file of the present invention.
- an MPLS transmission path corresponds to a path identifier (ID)
- a path ID corresponds to a BDI message
- the OAM function ⁇ P in the BDI message can be processed on the node of the MPLS transmission path.
- the method for transmitting and processing an extended BDI packet is provided as follows: Step 401: An end node on an MPLS transmission path generates an extended BDI packet according to requirements, and according to the extended BDI The path ID corresponding to the message will be transmitted along the MPLS transmission path.
- node 1 and node 4 are end nodes, and node 2 and node 3 are intermediate node.
- Node 1 can generate an extended BDI text as needed, and send the generated extended BDI 4 along the path of node 1 ⁇ node 2 ⁇ node 3 ⁇ node 4; node 4 can also generate extended BDI according to needs.
- the end node is capable of processing the BDI 4 text.
- the node 1 can process the extended BDI packet forwarded by the node 2; similarly, the node 4 also The extended BDI 4 message forwarded by the node 3 can be processed.
- the specific operation of the end node to generate the extended BDI packet is as follows: The end node encapsulates the required OAM function information by means of a type length value (TLV, Type Length Value) to obtain a TLV message; One or more TLV messages are encapsulated into the same extended BDI message. The so-called one or more TLV messages with the same processing node are the same as the nodes that need to process these TLV messages.
- TLV Type Length Value
- node 1 For example, node 1 generates TLV 4 ⁇ A, and specifies that the processing node of the ⁇ 3 ⁇ 4 text is node 4, node 1 generates TLV 4 ⁇ B, and the processing node of the packet is also node 4, then the TLV message A and B can be encapsulated in a BDI message; if node 1 generates TLV message C and specifies that the processing node of the message is node 4, node 1 generates TLV 4 ⁇ text D, and specifies the processing of the ⁇ 3 ⁇ 4 text. The node is node 3, then TLV 4 C C and D cannot be encapsulated in a BDI 4 ⁇ text.
- Step 402 The node that receives the extended BDI message on the MPLS transmission path identifies the TLV 4 message in the extended BDI 4 message when determining that the extended BDI 4 message needs to be processed, and identifies the TLV 4 that can be identified. The text is analyzed and processed. For a node that receives an extended BDI packet on the MPLS transmission path, it needs to first determine whether the received extended BDI packet needs to be processed. The specific operation is as follows: the survival of the extended BDI packet on the outer forwarding label. The value of the time ( TTL , Time To Live ) field is decremented by 1.
- the processing of the extended node BDI message is performed by matching the address information of the processing node carried by the extended BDI file with the address information of the node receiving the extended BDI message; if the two are consistent, it is determined that the extended BDI message needs to be processed; If the two are inconsistent, it is judged that the extended BDI 4 text does not need to be processed.
- the node that receives the extended BDI message forwards the received extended BDI message along the MPLS transmission path to the next node adjacent to the node.
- the node 3 receives the extended BDI 4 from the node 4, and when it is judged that the processing of the extended BDI 4 is not required, along the node 4 ⁇ the node 3 ⁇
- the path from node 2 to node 1 forwards BDI message 1 to the next node adjacent to node 3, node 2.
- the node that receives the extended BDI packet continues to identify the TLV packet in the extended BDI packet, and the specific operation is as follows: Type field and node in the TLV packet The stored Type field is matched, and if it can match, the TLV 4 message can be identified; if it cannot be matched, the TLV 4 message cannot be identified. If the TLV packet can be identified, the TLV packet can be analyzed and processed. If the TLV packet is not identified, the unrecognizable TLV packet is discarded.
- Step 601 From the MPLS transmission path Receive extended BDI 4 ⁇ text. As shown in FIG. 6, the method mainly includes the following steps: Step 601: From the MPLS transmission path Receive extended BDI 4 ⁇ text. As shown in FIG.
- node 1 and node 4 are end nodes, and nodes 2 and 3 are intermediate nodes;
- node 1 and node 4 are end nodes, and node 5 is an intermediate node.
- the end node 44 generates the extended BDI message 1 corresponding to the path node 1 ⁇ node 2 ⁇ node 3 ⁇ node 4 as needed; and generates the extended BDI • t ⁇ text 2 corresponding to the path node 1 ⁇ node 5 ⁇ node 4 as needed.
- the path IDs corresponding to BDI 4 and extended BDI 4 are different.
- Step 602 The node that receives the extended BDI message determines whether the extended BDI message needs to be processed. If not, step 603 is performed; if yes, step 604 is performed. Step 603: Forward the extended BDI packet along the MPLS transmission path to the next node adjacent to the node, and continue the operation of step 602 by the next node. The node that receives the extended BDI packet needs to determine whether it needs to process the packet.
- the node 3 in Figure 5 After receiving the extended BDI packet 1, the node 3 in Figure 5 needs to determine whether it needs to perform the extended BDI packet 1.
- the processing is specifically as follows: according to the value of the TTL field in the BDI packet, after the value is decremented by 1, if the value of the field is 0, the current node needs to process the extended BDI packet, and step 604 is performed; If the value of the field is not 0, the current node does not need to process the extended message, and step 603 is performed.
- the foregoing method for matching the address information may be used to determine whether the received extended BDI message needs to be processed, and details are not described herein again.
- the node 2 receives the extended BDI packet, the value of the TTL field is 2, and it is known that the node 2 still does not need to process the extended BDI packet 1.
- Node 2 continues to send the extended BDI message 1 to node 1.
- Node 1 needs to process extended BDI message 1, and step 604 is performed. Step 604, it is determined whether the TLV message in the extended BDI message can be identified. If not, step 605 is performed; if yes, step 606 is performed. Step 605: Discard the unrecognized TLV message.
- the node that receives the extended BDI packet needs to process the packet, it is preferred to identify the TLV 4 in the extended BDI message. Specifically, the identifier is identified by the Type field in the TLV 4. If the value of the Type field can match the value of the Type field stored by the current node, the current node can identify the TLV 4, and step 606 is performed; if the match cannot be matched, the current node cannot identify the TLV message directly. Discard the TLV packet. Step 606: Perform analysis processing on the identifiable TLV 4. The current node analyzes the identifiable TLV packet in the extended BDI packet. If the TLV packet is tested for delay, packet loss rate, or jitter, the current node performs the corresponding performance test.
- the current node performs clock signal tracking and adjustment processing; if it is a TLV message for fault information notification, the current node performs corresponding channel protection processing; if it is used for testing TLV messages, Then the current node performs corresponding test information processing.
- the extended BDI 4 text can also contain other TAM 4 texts of OAM functions, which are not repeated here.
- the present invention further provides a transmission processing apparatus for extending an RDI message, which is applied to a node on an MPLS path, and the device includes: a message processing module and a TLV. Analyze the processing module.
- the 4 ⁇ ⁇ processing module is configured to receive the extended RDI message generated by the end node and determine whether the processing needs to be performed. When determining that the processing needs to be performed, the extended RDI message is provided to the TLV analysis processing module.
- the TLV analysis processing module is configured to identify the TLV 4 ⁇ text in the extended RDI 4 , text, and analyze and process the identifiable TLV 4 ⁇ text.
- the RDI 4 text is a bidirectional 4 ⁇ text, which supports the bidirectional processing function, while the traditional BDI 4 ⁇ text is a one-way message, and only supports the one-way processing function.
- the bidirectional RDI message and the single The traditional BDI messages are applicable.
- the following specific embodiments mainly describe the traditional BDI as an example, and the traditional BDI 4 texts in the specific embodiments may be extended to RDI files.
- the present invention further provides a transmission processing apparatus for extending the BDI message, which is applied to a node on the MPLS path. As shown in FIG.
- the device includes: 4 ⁇ 10 and TLV analysis processing module 20.
- the packet processing module 10 is configured to receive an extended BDI packet generated by the end node and determine whether processing is required.
- the extended BDI message is provided to the TLV analysis processing module 20 when it is determined that processing is required.
- the TLV analysis processing module 20 is configured to identify the TLV 4 ⁇ text in the extended BDI 4 , text, and analyze and process the identifiable TLV 4 ⁇ text.
- the device further includes: a message generating module 30, configured to generate an extended BDI message according to the requirement, and provide the report to the end node.
- the message processing module 10 is further configured to send the extended BDI 4 ⁇ along the MPLS transmission path according to the path ID corresponding to the extended BDI 4 ⁇ .
- the message processing module 10 is further configured to forward the extended BDI text along the MPLS transmission path when it is determined that the received extended BDI message does not need to be processed.
- the TLV analysis processing module 20 is further configured to discard the TLV 4 text when the TLV 4 message is not recognized. It can be seen from jt ⁇ that there are usually two end nodes and several intermediate nodes in an MPLS transmission path. Only the end nodes have the function of generating BDI 4, and the intermediate nodes can only receive the extended BDI 4 files.
- the end node can also receive and process the extended BDI 4, in this case, the end node includes the above: 4 ⁇ processing module 10, TLV analysis processing module 20, and ⁇ A module 30 is generated.
- the above embodiments of the present invention not only ensure the compatibility and interoperability of the Multi-Protocol Label Switching (MPLS) device, but also improve the transmission efficiency of the link.
- MPLS Multi-Protocol Label Switching
- the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices.
- they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
- the invention is not limited to any particular combination of hardware and software.
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP09844809.5A EP2434699B1 (en) | 2009-05-19 | 2009-09-23 | Method and apparatus for transmitting and processing extended remote defection identification message and extended backward defection identification message |
JP2012511118A JP2012527791A (ja) | 2009-05-19 | 2009-09-23 | 拡張rdiメッセージ及び拡張bdiメッセージの伝送処理方法及び装置 |
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CN200910084867.9 | 2009-05-19 | ||
CN200910084867.9A CN101895459B (zh) | 2009-05-19 | 2009-05-19 | 一种扩展bdi报文的传输处理方法和装置 |
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EP (1) | EP2434699B1 (zh) |
JP (1) | JP2012527791A (zh) |
KR (1) | KR20120019478A (zh) |
CN (1) | CN101895459B (zh) |
WO (1) | WO2010133057A1 (zh) |
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CN102594582B (zh) * | 2011-01-14 | 2017-12-15 | 中兴通讯股份有限公司 | 一种报文环回方法及系统 |
CN104734956B (zh) * | 2012-02-13 | 2018-06-15 | 华为技术有限公司 | 业务路由系统及业务处理的方法、设备 |
CN103326889B (zh) * | 2013-07-18 | 2016-06-08 | 迈普通信技术股份有限公司 | 一种新旧版本间通信兼容的方法及装置 |
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CN1838620A (zh) * | 2005-03-25 | 2006-09-27 | 华为技术有限公司 | 检测混合网络中端到端节点间链路故障的方法 |
CN1848756A (zh) * | 2005-04-15 | 2006-10-18 | 华为技术有限公司 | 以太网与多协议标签交换网络互通的故障管理方法 |
US20070133564A1 (en) * | 2005-12-09 | 2007-06-14 | Chun Kyung G | Method for propagating maintenance signal in VPWS network using SDH/SONET |
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US7747716B2 (en) * | 2003-04-28 | 2010-06-29 | Alcatel-Lucent Usa Inc. | Injecting addresses to enable OAM functions |
JP4334419B2 (ja) * | 2004-06-30 | 2009-09-30 | 富士通株式会社 | 伝送装置 |
KR100696176B1 (ko) * | 2005-12-09 | 2007-03-20 | 한국전자통신연구원 | Mpls lsp보호절체 장치 및 방법 |
CN101179479A (zh) * | 2006-11-09 | 2008-05-14 | 华为技术有限公司 | 一种以太网的操作管理和维护报文的传输方法、系统和节点 |
CN101316225B (zh) * | 2007-05-30 | 2012-12-12 | 华为技术有限公司 | 一种故障检测方法、通信系统和标签交换路由器 |
CN101330442B (zh) * | 2007-06-20 | 2010-12-08 | 中兴通讯股份有限公司 | 基于共享反向路径的缺陷指示信息传递方法 |
US7782762B2 (en) * | 2007-09-21 | 2010-08-24 | Alcatel Lucent | RSVP-TE enhancement for MPLS-FRR bandwidth optimization |
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2009
- 2009-05-19 CN CN200910084867.9A patent/CN101895459B/zh not_active Expired - Fee Related
- 2009-09-23 WO PCT/CN2009/074153 patent/WO2010133057A1/zh active Application Filing
- 2009-09-23 KR KR1020117029697A patent/KR20120019478A/ko not_active Application Discontinuation
- 2009-09-23 JP JP2012511118A patent/JP2012527791A/ja active Pending
- 2009-09-23 EP EP09844809.5A patent/EP2434699B1/en not_active Not-in-force
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CN1838620A (zh) * | 2005-03-25 | 2006-09-27 | 华为技术有限公司 | 检测混合网络中端到端节点间链路故障的方法 |
CN1848756A (zh) * | 2005-04-15 | 2006-10-18 | 华为技术有限公司 | 以太网与多协议标签交换网络互通的故障管理方法 |
US20070133564A1 (en) * | 2005-12-09 | 2007-06-14 | Chun Kyung G | Method for propagating maintenance signal in VPWS network using SDH/SONET |
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Publication number | Publication date |
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EP2434699A1 (en) | 2012-03-28 |
EP2434699B1 (en) | 2016-11-02 |
CN101895459B (zh) | 2015-01-28 |
EP2434699A4 (en) | 2014-05-28 |
JP2012527791A (ja) | 2012-11-08 |
CN101895459A (zh) | 2010-11-24 |
KR20120019478A (ko) | 2012-03-06 |
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