CN101075973A - Method, system, source end and host end for exchanging path by label indesx - Google Patents
Method, system, source end and host end for exchanging path by label indesx Download PDFInfo
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- CN101075973A CN101075973A CN200710136317.8A CN200710136317A CN101075973A CN 101075973 A CN101075973 A CN 101075973A CN 200710136317 A CN200710136317 A CN 200710136317A CN 101075973 A CN101075973 A CN 101075973A
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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
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
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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
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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]
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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
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5625—Operations, administration and maintenance [OAM]
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Abstract
The system thereof comprises: source end and destination end. The method comprise: receiving a message; said message carries the OAM (operation, administration and maintenance) label and the inner layer label used for identifying the forward LSP (label switching path); according to the inner layer label, pointing out the failure forward LSP. By the invention, in case of sharing backward channel, Mp2p LSP and PHP, the message receiving end is able to point out the failure forward LSP according to the label carried by the message.
Description
Technical field
The present invention relates to the communications field, relate in particular to the technology of using the tab indexes label switched path.
Background technology
OAM (Operation, Administration ﹠amp; Maintenance, Operations, Administration and Maintenance) function, can simplify network operation, monitoring network performance, reduce the network operation cost.It is even more important in the network that provides quality of service (QOS) to guarantee.MPLS (Multiple protocol label switching, multiprotocol label switching) technology is supported QOS and various network services as the key technology of prolongable next generation network, requires OAM(Operation Administration Maintenance) equally, is called the MPLS OAM(Operation Administration Maintenance).
When realizing the MPLS OAM(Operation Administration Maintenance), the source end periodically sends MPLS OAM message, as CV (Connectivity Verification, Connectivity Verification), FFD (Fast Failure Detection, defects detection fast) message; Su Duan carries out detection of connectivity according to described MPLS OAM message, as detecting CV or whether the FFD message can regularly be received, content of message is whether correct etc., and determines the defect type that produces according to testing result; When Su Duan detects defective, can send BDI (BackwardDefect Indicator, oppositely preliminary warning notice) message to the source end by backward channel; The source end can be according to the LSP (Label Switched Path, label switched path) of label (label) the index generation defective of carrying in the described BDI message, and takes the measure of switching accordingly.The form of described MPLS OAM message is as shown in Figure 1:
As can be seen, the outer layer label of MPLS OAM message is MPLS label (a MPLS label), and it can be used as the outgoing label of LSP, and the vpn label value of message is 14 (OAM Route alert label), and all the other are OAM Payload (OAM payload).
When utilizing the LSP of label index generation defective, can be suitable for monopolizing under the situation of backward channel.Need be every reverse LSP passage of monopolizing outer layer label of LSP configuration that enables OAM(Operation Administration Maintenance) this moment; When Su Duan detected certain bar LSP passage and defective occurs, the reverse LSP passage of monopolizing that passes through to be disposed sent the BDI message to the source end; After described source termination is received described BDI message, by the label value of the outer layer label in the described message, can unique index to the LSP that defective occurs, thereby to operations such as this LSP switch.But utilize the method for the LSP of label index generation defective, can not support the OAM under following three kinds of situations well:
First kind of situation: share backward channel
When Su Duan sent the BDI message to the source end by sharing reverse LSP passage, the outer layer label that described BDI message carries was identical, so the source end can not go out to take place the LSP path of defective according to described outer layer label index.
Second kind of situation: Mp2p (Multiple Point to Point, how point-to-point, promptly label merges) LSP
Mp2p, be also referred to as label and merge (merge) technology, the thought of this technology is: the grouped data of isolabeling arrives certain LSR (Label Switched Router when having not, LSR) node is when (being called aggregation node), this LSR node merges the different labels of going into, and is mapped to identical outgoing label; Use described identical outgoing label to export described grouped data.
In this case, if a lot of bar LSP paths are in certain LSR node polymerization, and send the OAM detection messages, then at the next-hop node place of described LSR node, can receive the message that transmits from many LSP paths at the appointed time, but for this node, the label of going into of these messages is identical, so this node can think that its all messages that receive all transmit from same LSP path, thereby be easy to generate dExcess (excessively) defective, promptly in official hour, receive the message amount of transmitting from same LSP path and surpassed the limit of setting.And this moment in fact may be all the LSP path all very normal, thereby the situation of the LSP of defective may appear reporting by mistake.
In addition, even certain bar LSP path fails, Su Duan also may not detect, because it can receive the detection messages that sends over by other LSP path, so can't bring into play the effect of OAM well.
After even Su Duan detects defective because at Su Duan, the grouped data correspondence that send in many LSP paths to go into label identical, specifically be that fault has taken place in which bar LSP path so the place end can't be known, thereby can't inform the source end.
The third situation: PHP (Penultimate Hop Popping, the last two jump is ejected)
Described PHP technology is meant that the penult LSR in the outermost LSP of the being marked at path ejects in the labeled slots, rather than the egress LSR in the LSP path is ejected.Penult LSR is according to the mark that originally was positioned at stack top, and which the egress LSR forwarding packet data of decision in the LSP path, and outermost mark in the labeled slots ejected sends to described egress LSR with the mark of other layer with grouped data; Described egress LSR, i.e. the Su Duan in LSP path, when receiving described grouped data, it carries out the forwarding decision of grouped data according to the mark that is positioned at stack top.If only comprise a mark in the grouped data, then after the last two jump was ejected, the egress LSR in the LSP path was made and is transmitted decision according to the network layer packet head of grouped data.
In this case, the Su Duan in the LSP path has not had the outermost layer label, therefore can't fault take place with which bar LSP path of label index, thereby can't inform the source end.
By the analysis to above-mentioned three kinds of situations, as can be seen, under first kind of situation, the source end can not utilize the label value of the outer layer label in the BDI message that the place end sends, and unique index is to the LSP that defective occurs; Under second kind and the third situation, the place end can not be according to the label value of the outer layer label in the message of source end transmission, determine that fault has taken place in which bar LSP path, therefore under these three kinds of situations, an end that receives message all can not the LSP of defective occur according to the tab indexes in the message of opposite end transmission, thereby can not support OAM well.
Summary of the invention
Embodiments of the invention provide a kind of method, system, source end and Su Duan that uses the tab indexes label switched path, and an end that receives message can be according to the tab indexes forward LSP in the message that receives.
Embodiments of the invention are achieved through the following technical solutions:
Embodiments of the invention provide a kind of method of using the tab indexes label switched path, and it comprises:
Receive message, described message carries the oam label, and the vpn label that is used to identify the forward label switched path;
The forward label switched path that occurs defective according to described vpn label index.
Embodiments of the invention also provide a kind of system that uses the tab indexes label switched path, and it comprises:
Transmitting terminal is used to send message, and described message carries the oam label, and the vpn label that only is used to identify the forward label switched path;
Receiving terminal is used for the forward label switched path of defective occurring according to described vpn label index after described message arrives.
Embodiments of the invention also provide a provenance end, and it comprises:
Acquiring unit is used to receive by sharing the reverse preliminary warning notice message that reverse label switched path sends, and carries the oam label in the described reverse preliminary warning notice message, and the vpn label that is used to identify the forward label switched path;
Indexing units is used for according to described vpn label, determines to occur the forward label switched path of defective.
Embodiments of the invention also provide another provenance end, and it comprises:
Structural unit is used for constructor maintenance management message, makes described message carry the oam label, and the vpn label that is used to identify the forward label switched path;
Transmission unit is used for by label switched path, and the message that described message structural unit is constructed sends.
Embodiments of the invention also provide a kind of Su Duan, and it comprises:
The message acquiring unit is used to receive the oam message, and described message carries the oam label, and the vpn label that is used to identify the forward label switched path;
The path indexing unit is used for occurring according to described vpn label index the forward label switched path of defective.
Embodiments of the invention also provide another kind of Su Duan, and it comprises:
The message structural unit is used to construct reverse preliminary warning notice message, makes described message carry the OAM label, and the vpn label that is used to identify the forward label switched path that defective occurs;
The message transmissions unit is used for by sharing reverse label switched path, and the message that described message structural unit is constructed sends.
The specific embodiments that is provided by the embodiment of the invention described above as can be seen, it the forward LSP of defective occurs according to the vpn label index in the message that receives, therefore under shared backward channel, Mp2p LSP or PHP situation, receive an end of message, can be according to the label that carries in the message, the forward LSP of defective appears in index.
Description of drawings
The form schematic diagram of the MPLS OAM message that Fig. 1 provides for prior art;
Fig. 2 is the flow chart of first embodiment of the invention;
Fig. 3 is the form schematic diagram of the OAM message in the first embodiment of the invention;
Fig. 4 is the flow chart of second embodiment of the invention;
Fig. 5 is the form schematic diagram of the OAM message in the second embodiment of the invention;
Fig. 6 is the flow chart of third embodiment of the invention.
Embodiment
The embodiment of the invention is under shared backward channel, Mp2p LSP or PHP situation, receive an end of message, can be according to the label that carries in the message, the forward LSP of defective appears in index, thereby can support the OAM under Mp2p LSP, PHP or the shared backward channel situation well, it adopts the label stack technology, in the middle of outer layer label and OAM label, increased one deck vpn label, this label is used for identifying forward (from the source end to Su Duan) LSP, and, can be familiar with described sign by source end and Su Duan being held consultation or disposing.
First embodiment provided by the invention is first kind of method of using the tab indexes label switched path, and this method can be supported the OAM under the Mp2p LSP situation.The specific implementation process of this embodiment comprises as shown in Figure 2:
Step S101, each source end send OAM message separately by forward LSP.Each OAM message carries the OAM label, and the vpn label that is used to identify forward LSP.
The form of OAM message as shown in Figure 3, as can be seen, described OAM message comprises outer layer label and OAM label, and is arranged on the vpn label between outer layer label and the OAM label.Described outer layer label can be the MPLS label that is used to transmit.Described vpn label is used for forward LSP of unique identification.Described OAM label can be that label is 14 OAM message.
Step S102, after the OAM message that carries different vpn labels arrives the node of many forward LSP path polymerizations, described node is mapped to certain outgoing label with described outer layer label, and with the outer layer label of described outgoing label as the OAM message, and keep vpn label and OAM label constant, then described OAM message is sent.
Above-mentioned outgoing label can determine according to LDP (Label Distribution Protocol, label distribution protocol), and it is definite also can to go into the corresponding relation of label and outgoing label according to static configuration.
Step S103, when described OAM message arrived the place end, described Su Duan was according to the LSP that vpn label identified that carries in the described OAM message, and the LSP of defective appears in index.
Afterwards, the place end can be announced to the source end by monopolizing reverse LSP transmission BDI message; The source end can the forward LSP of defective occur by index according to the outer layer label that carries in the described BDI message, and takes the measure of switching accordingly, realizes OAM(Operation Administration Maintenance).
Su Duan also can announce to the source end by sharing reverse LSP transmission BDI message, and the form of the form of described BDI message and above-mentioned OAM message is identical, need carry the vpn label that is used for identifying forward LSP; The source end can be known that fault has appearred in which bar forward LSP, thereby take the measure of switching accordingly according to the vpn label that carries in the described BDI message, therefore can realize OAM(Operation Administration Maintenance).
By first embodiment as can be seen, when the source end sends the OAM message, adopt the label stack technology, forwarding capability and index function are separated, the outer layer label outbreak usefulness that runs up, the responsible transmission of OAM message between source end and Su Duan; Vpn label is made index, only is responsible for forward LSP of unique identification.Therefore, when the OAM message arrives the node of many LSP path polymerizations, the just outer layer label of described node conversion, the vpn label that is used for identifying forward LSP still remains unchanged, so the place end can index the LSP that defective occurs according to described vpn label.
Second embodiment provided by the invention is second kind of method of using the tab indexes label switched path, and this method can be supported the OAM under the PHP situation.The specific implementation process of this embodiment comprises as shown in Figure 4:
Step S201, source end send the OAM message by forward LSP.The OAM message carries the OAM label, and the vpn label that is used to identify forward LSP.
Duplicating among the form of described OAM message and first embodiment comprises outer layer label and OAM label, and is arranged on the vpn label between outer layer label and the OAM label.Described outer layer label can be the MPLS label that is used to transmit.Described vpn label only is used for forward LSP of unique identification.Described OAM label can be that label is 14 OAM message.
Step S202, when described OAM message arrives the hop node second from the bottom in LSP path, described node is determined to receive described OAM message according to the outer layer label of described OAM message, and the OAM message that carries vpn label, OAM label and OAM payload is sent to Su Duan.
The form of described OAM message comprises vpn label and OAM label as shown in Figure 5.
Step S203, when described OAM message arrives described Su Duanhou, described Su Duan is according to the LSP that vpn label identified in the described OAM message, and the LSP of defective appears in index.
Afterwards, the place end can be announced to the source end by monopolizing reverse LSP transmission BDI message; The source end can the forward LSP of defective occur by index according to the outer layer label that carries in the described BDI message, and takes the measure of switching accordingly, realizes OAM(Operation Administration Maintenance).Su Duan also can announce to the source end by sharing reverse LSP transmission BDI message, but the form of form in the described BDI message and above-mentioned OAM message is identical, need carry the vpn label that is used for identifying forward LSP; The source end can be known that fault has appearred in which bar forward LSP, thereby take the measure of switching accordingly according to the vpn label that carries in the described BDI message, therefore can realize OAM(Operation Administration Maintenance).
By second embodiment as can be seen, when the source end sends the OAM message, adopt the label stack technology, forwarding capability and index function are separated, the outer layer label outbreak usefulness that runs up, the only responsible transmission of OAM message between source end and Su Duan; Vpn label is made index, is responsible for the unique forward LSP of sign.Therefore, under the PHP situation, outer layer label is after the last two jump in LSP path is ejected, and the vpn label that identifies forward LSP in addition exists, and therefore can not influence the LSP that defective appears in place end index.
The 3rd embodiment provided by the invention is a kind of use tab indexes tag changeable path routing method, and this method can support to share the OAM under the backward channel situation.The specific implementation process of this embodiment comprises as shown in Figure 6:
Step S301, the source end sends the OAM message.The form of described OAM message can adopt form of the prior art, also can adopt the form among described first embodiment and second embodiment.
Step S302, when described OAM message arrived the place end, Su Duan was according to described OAM message, and the LSP of defective appears in index.
Among the step S302, the LSP of defective can appear according to the method index of prior art in the place end, also can occur the LSP of defective according to the method index among described first embodiment and second embodiment.
Step S303 after the LSP of defective appears in place end index, announces to described source end by sharing backward channel transmission BDI message, and described BDI message carries the OAM label, and the vpn label that is used to identify forward LSP.
The form of the OAM message among the form of described BDI message and first embodiment is identical, comprises outer layer label and OAM label equally, and is arranged on the vpn label between outer layer label and the OAM label.Described outer layer label can be the MPLS label that is used to transmit.Described vpn label is used for identifying forward LSP.Described OAM label can be that label is 14 OAM message.
Step S304, when described BDI message arrives the source end, the LSP that vpn label identified that described source end carries according to described BDI message, the LSP of defective appears in index.
By the 3rd embodiment as can be seen, when Su Duan determines the LSP that defective occurs, when sending the BDI message by sharing backward channel, adopt the label stack technology, forwarding capability and index function are separated, and the outer layer label outbreak usefulness that runs up is responsible for the transmission of BDI message between Su Duan and source end; Vpn label is made index, and the forward LSP of defective appears in responsible sign.Therefore, when the BDI message arrived the source end, the source end can index the LSP that defective occurs according to described vpn label, thereby takes the measure of switching accordingly, therefore can realize OAM(Operation Administration Maintenance).
The 4th embodiment provided by the invention is a kind of system that uses the many label switched paths of tab indexes, and it comprises: transmitting terminal, receiving terminal.Described system can also comprise aggregation node or hop node second from the bottom or comprise aggregation node simultaneously and hop node second from the bottom.
Transmitting terminal can be the source end that sends the OAM message by forward LSP, and corresponding described receiving terminal can be the Su Duan that receives described OAM message.
Transmitting terminal sends the OAM message, and described OAM message carries oam OAM label, and the vpn label that only is used to identify the forward label switching path LSP;
Aggregation node is used for after a plurality of OAM messages arrive the outer layer label that carries in the described OAM message being mapped to certain outgoing label, with the outer layer label of described outgoing label as the OAM message, and keeps vpn label constant, and described OAM message is sent.
Hop node second from the bottom is used for after the OAM message arrives, and after determining to receive described OAM message according to the outer layer label of described OAM message, the OAM message that carries described vpn label is sent.
The forward LSP of defective appears in receiving terminal according to the described vpn label index in the OAM message that arrives.
Above-mentioned transmitting terminal can also be the Su Duan that sends the BDI message by shared reverse LSP, and corresponding described receiving terminal is for receiving the source end of described BDI message.
Transmitting terminal sends the BDI message, and described message carries oam OAM label, and the vpn label that only is used to identify the forward label switching path LSP;
The forward LSP of defective appears in receiving terminal according to the described vpn label index in the BDI message that arrives.
Fifth embodiment of the invention provides a provenance end, and it comprises: acquiring unit and indexing units.
Acquiring unit receives by sharing the reverse preliminary warning notice BDI message that reverse LSP sends, and carries the OAM label in the described BDI message, and the vpn label that is used to identify forward LSP;
Indexing units according to described vpn label, determines to occur the forward LSP of defective.
Sixth embodiment of the invention also provides another provenance end, and it comprises: structural unit and transmission unit.
Structural unit, structure OAM message makes described message carry the OAM label, and the vpn label that is used to identify forward LSP; Associated description among specific implementation process and the method embodiment is identical, is not described in detail here.
Transmission unit, by LSP, the message that described message structural unit is constructed sends.
Seventh embodiment of the invention provides a kind of Su Duan, and it comprises: message acquiring unit and path indexing unit.
The message acquiring unit receives oam OAM message, and described message carries the OAM label, and the vpn label that is used to identify the forward label switching path LSP;
The forward LSP of defective appears in the path indexing unit according to described vpn label index.
Seventh embodiment of the invention also provides another kind of Su Duan, and it comprises: message structural unit and message transmissions unit.
The message structural unit is constructed reverse preliminary warning notice BDI message, makes described message carry the OAM label, and the vpn label that is used to identify the forward LSP that defective occurs; Associated description among specific implementation process and the method embodiment is identical, is not described in detail here.
The message transmissions unit, by sharing reverse LSP, the message that described message structural unit is constructed sends.
By the specific embodiments of the foregoing description as can be seen, the embodiment of the invention is by being arranged on the LSP that defective appears in vpn label index between outer layer label and the OAM label, therefore can the LSP of defective appear according to receiving tab indexes in the message, thereby can support to share the OAM(Operation Administration Maintenance) under backward channel, mp2p LSP and the PHP situation, increase the range of application of label index.
In addition, the embodiment of the invention is by being arranged on the vpn label between outer layer label and the OAM label, the message that can determine to receive is from by which bar forward LSP transmitting, can receive the message amount of transmitting from a certain path at the appointed time by correct measurement like this, thereby reduced the dExcess generation of defects, and then reduced the generation of the situation of the LSP that reports defective by mistake.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1, a kind of method of using the tab indexes label switched path is characterized in that, comprising:
Receive message, described message carries the oam label, and the vpn label that is used to identify the forward label switched path;
The forward label switched path that occurs defective according to described vpn label index.
2, the method for claim 1 is characterized in that, described message also carries the outer layer label that is used to transmit.
3, method as claimed in claim 2 is characterized in that, described message comprises: by the oam message of forward label switched path transmission.
4, method as claimed in claim 3 is characterized in that, also comprises:
After the node that many forward label switched paths converge receives a plurality of oam messages, described node is mapped to an outgoing label with described outer layer label, with the outer layer label of described outgoing label as the oam message, and keep vpn label constant, send described oam message then.
5, method as claimed in claim 3 is characterized in that, also comprises:
When the oam message arrives the hop node second from the bottom of forward label switched path, described hop node second from the bottom is determined to receive described oam message according to described outer layer label, and the oam message that carries described vpn label is sent.
6, method as claimed in claim 1 or 2 is characterized in that, described message comprises: by sharing the reverse preliminary warning notice message that reverse label switched path sends.
7, a kind of system that uses the many label switched paths of tab indexes is characterized in that, comprising:
Transmitting terminal is used to send message, and described message carries the oam label, and the vpn label that only is used to identify the forward label switched path;
Receiving terminal is used for the forward label switched path of defective occurring according to described vpn label index after described message arrives.
8, system as claimed in claim 7 is characterized in that,
Described transmitting terminal comprises: by the source end of forward label switched path transmit operation maintenance management message, corresponding described receiving terminal comprises: the Su Duan that receives described oam message.
9, system as claimed in claim 7 is characterized in that, also comprises:
Aggregation node, be used for after a plurality of oam messages arrive, the outer layer label that carries in the described oam message is mapped to an outgoing label, with the outer layer label of described outgoing label as the oam message, and keep vpn label constant, described oam message is sent.
10, system as claimed in claim 7 is characterized in that, also comprises:
Hop node second from the bottom is used for after the oam message arrives, and determines to receive described oam message according to described outer layer label, and the oam message that carries described vpn label is sent.
11, system as claimed in claim 7 is characterized in that,
Described transmitting terminal comprises: by sharing the Su Duan that reverse label switched path sends reverse preliminary warning notice message, corresponding described receiving terminal comprises: the source end that receives described reverse preliminary warning notice message.
12, a provenance end is characterized in that, comprising:
Acquiring unit is used to receive by sharing the reverse preliminary warning notice message that reverse label switched path sends, and carries the oam label in the described reverse preliminary warning notice message, and the vpn label that is used to identify the forward label switched path;
Indexing units is used for according to described vpn label, determines to occur the forward label switched path of defective.
13, a provenance end is characterized in that, comprising:
Structural unit is used for constructor maintenance management message, makes described message carry the oam label, and the vpn label that is used to identify the forward label switched path;
Transmission unit is used for by label switched path, and the message that described message structural unit is constructed sends.
14, a kind of Su Duan is characterized in that, comprising:
The message acquiring unit is used to receive the oam message, and described message carries the oam label, and the vpn label that is used to identify the forward label switched path;
The path indexing unit is used for occurring according to described vpn label index the forward label switched path of defective.
15, a kind of Su Duan is characterized in that, comprising:
The message structural unit is used to construct reverse preliminary warning notice message, makes described message carry the oam label, and the vpn label that is used to identify the forward label switched path that defective occurs;
The message transmissions unit is used for by sharing reverse label switched path, and the message that described message structural unit is constructed sends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710136317.8A CN101075973A (en) | 2007-07-13 | 2007-07-13 | Method, system, source end and host end for exchanging path by label indesx |
| PCT/CN2008/071595 WO2009009992A1 (en) | 2007-07-13 | 2008-07-09 | A method, system, source end and destination end for indexing the label switching path by means of a label |
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| CN200710136317.8A CN101075973A (en) | 2007-07-13 | 2007-07-13 | Method, system, source end and host end for exchanging path by label indesx |
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| WO2009009992A1 (en) * | 2007-07-13 | 2009-01-22 | Huawei Technologies Co., Ltd. | A method, system, source end and destination end for indexing the label switching path by means of a label |
| CN102752128A (en) * | 2012-04-19 | 2012-10-24 | 杭州华三通信技术有限公司 | Multi-protocol label switching (MPLS) traffic engineering (TE) tunnel fault detection method and device thereof |
| CN105323169A (en) * | 2014-06-30 | 2016-02-10 | 瞻博网络公司 | Multi-protocol label switching (MPLS) rings |
| CN108494474A (en) * | 2018-03-23 | 2018-09-04 | 烽火通信科技股份有限公司 | Realize that business is superimposed the method and system of pretection switch using OAM message |
| US10218611B2 (en) | 2014-06-30 | 2019-02-26 | Juniper Networks, Inc. | Label distribution protocol (LDP) signaled multi-protocol label switching rings |
| CN112737954A (en) * | 2019-10-14 | 2021-04-30 | 华为技术有限公司 | Message processing method, device, system, equipment and storage medium |
| US11233748B1 (en) | 2018-08-30 | 2022-01-25 | Juniper Networks, Inc. | Bandwidth management for resource reservation label switched path of a ring network |
| US11799769B2 (en) | 2019-10-14 | 2023-10-24 | Huawei Technologies Co., Ltd. | Packet processing method, apparatus, system, and device, and storage medium |
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| CN102487477B (en) * | 2010-12-01 | 2014-10-22 | 中兴通讯股份有限公司 | Method for realizing customized applications for mobile network enhanced logic (CAMEL) 3 or 4 service and system thereof |
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| DE10219154A1 (en) * | 2002-04-29 | 2003-11-20 | Siemens Ag | Procedure for monitoring the availability of connections in MPLS networks |
| JP4111129B2 (en) * | 2003-12-01 | 2008-07-02 | 日本電信電話株式会社 | Multicast MPLS communication method |
| KR100737341B1 (en) * | 2005-12-08 | 2007-07-09 | 한국전자통신연구원 | Performance Measurement Method for MPLS LSP |
| US20110174307A1 (en) * | 2006-01-04 | 2011-07-21 | Lessi Stephane | Device for Supplying Oxygen to the Occupants of an Aircraft and Pressure Regulator for Such a Device |
| CN101075973A (en) * | 2007-07-13 | 2007-11-21 | 华为技术有限公司 | Method, system, source end and host end for exchanging path by label indesx |
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| CN102752128A (en) * | 2012-04-19 | 2012-10-24 | 杭州华三通信技术有限公司 | Multi-protocol label switching (MPLS) traffic engineering (TE) tunnel fault detection method and device thereof |
| CN102752128B (en) * | 2012-04-19 | 2015-07-08 | 杭州华三通信技术有限公司 | Multi-protocol label switching (MPLS) traffic engineering (TE) tunnel fault detection method and device thereof |
| CN105323169A (en) * | 2014-06-30 | 2016-02-10 | 瞻博网络公司 | Multi-protocol label switching (MPLS) rings |
| US10218611B2 (en) | 2014-06-30 | 2019-02-26 | Juniper Networks, Inc. | Label distribution protocol (LDP) signaled multi-protocol label switching rings |
| CN108494474A (en) * | 2018-03-23 | 2018-09-04 | 烽火通信科技股份有限公司 | Realize that business is superimposed the method and system of pretection switch using OAM message |
| US11233748B1 (en) | 2018-08-30 | 2022-01-25 | Juniper Networks, Inc. | Bandwidth management for resource reservation label switched path of a ring network |
| CN112737954A (en) * | 2019-10-14 | 2021-04-30 | 华为技术有限公司 | Message processing method, device, system, equipment and storage medium |
| US11799769B2 (en) | 2019-10-14 | 2023-10-24 | Huawei Technologies Co., Ltd. | Packet processing method, apparatus, system, and device, and storage medium |
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| WO2009009992A1 (en) | 2009-01-22 |
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