CN101155178A - Method, device and system for establishing bidirectional LSP in multi-protocol label switching - Google Patents
Method, device and system for establishing bidirectional LSP in multi-protocol label switching Download PDFInfo
- Publication number
- CN101155178A CN101155178A CNA2006100629930A CN200610062993A CN101155178A CN 101155178 A CN101155178 A CN 101155178A CN A2006100629930 A CNA2006100629930 A CN A2006100629930A CN 200610062993 A CN200610062993 A CN 200610062993A CN 101155178 A CN101155178 A CN 101155178A
- Authority
- CN
- China
- Prior art keywords
- lsp
- reverse
- point
- node
- lsr
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
- H04L47/724—Admission control; Resource allocation using reservation actions during connection setup at intermediate nodes, e.g. resource reservation protocol [RSVP]
-
- 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]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/15—Flow control; Congestion control in relation to multipoint traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/74—Admission control; Resource allocation measures in reaction to resource unavailability
- H04L47/745—Reaction in network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/825—Involving tunnels, e.g. MPLS
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention discloses a method, apparatus and system for establishing bidirectional LSP in multi-protocol label exchange. The method includes: if source node has no forward LSP for business, the source node establishes the forward LSP directly; if the source node has no reverse LSP for business, the source node notices destination node to establish the reverse LSP with point to point mode; the destination node establishes the reverse LSP. By means of the solution of the present invention, to provide bidirectional business using the existing forward and reverse LSP, which improves the availability ratio of network source, the point to point mode of controlling information transmission releases the processing load of middle nodes, at the same time, the independence based on the forward and reverse LSP also improves the elasticity provided by bidirectional business.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to the methods, devices and systems of setting up bidirectional LSP in the multiprotocol label switching.
Background technology
(Multi-Protocol Label Switching, MPLS) (Label Switched Path, foundation LSP) is by hop-by-hop route switching signaling information to middle label switched path, i.e. label request and label mapping realization in multiprotocol label switching.The LSP that is set up is by (Label Switched Router, LSR) node is to the unidirectional LSP of destination node from the local terminal tag changeable path.
Along with the extensive use of MPLS, some business use bidirectional LSP to come service data transmission as requirements such as voice, video conferencing.From the angle of valid data transmission, need be with the opposite unidirectional LSP of direction between two terminal notes, promptly the LSP of source node to destination node and destination node to this both direction of source node binds a two-way LSP.
For foundation and the maintenance management of supporting bidirectional LSP, new mechanism is necessary.In order to describe clearlyer, agreement will trigger the source node of setting up bidirectional LSP and be called forward (foward) towards the direction of destination node, and its correspondence is called oppositely (backward) by destination node towards the direction of source node.Need to prove that for forming a two-way LSP, two unidirectional LSP is forward and oppositely LSP each other.
In the prior art 2, set up the schematic diagram of bidirectional LSP referring to prior art shown in Figure 2, Fig. 3 is for realizing setting up bidirectional LSP structure block diagram.Routing node is followed conventional labels issue signaling process mechanism and is carried out label distribution.Wherein, source node R0 all comprises the information that reverse LSP and corresponding parameter are set up in an indication by intermediate node R1, R2 in the label request message [(1), (2), (3)] that destination node R5 sends, these information are inserted in the label request message [(1)] by the source node R0 of forward LSP and go.For intermediate node R1 and R2, intermediate node need be responsible for copy and arrive destination node with these information of forwarding.Peer node extracts this information that identifies, and initiates to set up reverse LSP.
Prior art has following shortcoming:
1, set up bidirectional LSP in the prior art 1 and 2 all will set up the opposite unidirectional LSP of two new directions and it is bound at every turn.If deposited in one direction LSP between the fringe node of bidirectional LSP, so just must earlier this LSP be removed and to set up bidirectional LSP at identical FEC.This will waste Internet resources greatly and also normal professional the transmission be caused damage simultaneously.
2, will indicate the message of setting up reverse LSP to be inserted in the label request message in prior art 1 and the prior art 2 at the fringe node of going into of forward LSP, there is not independently control channel, label is not easy to management maintenance, and the processing burden that has also increased the weight of intermediate node simultaneously is because these Indication messages are nonsensical for intermediate node.The another one aspect, with the indication information of setting up direction LSP be inserted into make in the label request message forward LSP and oppositely LSP can not set up in order, the LSP that promptly has a direction successfully sets up and LSP on the another one direction sets up the situation of failure, have to remove the LSP that the unidirectional LSP that has set up attempts setting up both direction again this moment again, and this greatly and be that processing expenditure unnecessarily is provided.
Summary of the invention
The purpose of embodiments of the invention is to utilize control channel efficiently, provides two-way services based on two independently unidirectional LSP, is achieved through the following technical solutions:
Embodiments of the invention provide a kind of method of setting up reverse LSP, and described method comprises:
If source node does not have professional available forward LSP, then source node is set up described forward LSP; If source node does not have professional available reverse LSP, then notify destination node to set up described reverse LSP by point-to-point mode, destination node is set up described reverse LSP.If source node has professional available forward LSP and reverse LSP, then bind described forward LSP and reverse LSP.
Embodiments of the invention provide a kind of LSR, comprise sending notification unit, retransmission unit;
Described transmission notification unit is used for when the professional available LSP that local terminal does not have, and creates to comprise the notification message that described professional corresponding LSP is set up in indication; Described retransmission unit is used to receive and transmit the control messages that comprises described notification message; Described retransmission unit sends described notification message downstream by point-to-point mode.Wherein, described transmission notification unit, when local terminal did not have the forward LSP of described business, the notice local terminal initiated to set up described forward LSP.
Embodiments of the invention also provide a kind of tag changeable path by system, comprise at least two LSRs, when the source LSR does not have professional available reverse LSP at local terminal, notify the place LSR to set up described reverse LSP by point-to-point mode; The place LSR is set up described reverse LSP.Wherein, when the source LSR did not have professional available forward LSP at local terminal, local terminal initiated to set up described forward LSP.Wherein, when the source LSR has professional available forward LSP and reverse LSP at local terminal, bind described forward LSP and described reverse LSP.Wherein, when the place LSR has professional available forward LSP and reverse LSP at local terminal, bind described forward LSP and described reverse LSP.
As seen from the above technical solution provided by the invention, compare with the prior art scheme,
Because the present invention is based on independently unidirectional LSP provides the bidirectional LSP business, this means that each unidirectional LSP can independently implement traffic engineering, also can utilize existing unidirectional LSP simultaneously, this will provide network resource utilization greatly than prior art.
Because the present invention adopts the control messages of point-to-point to manage bidirectional LSP, this will significantly reduce the processing burden of intermediate node than prior art.
Because the present invention independently control channel guarantees developing and managing in order of forward and reverse LSP, this can be avoided occurring the risk of high processing expenditure than prior art.
Description of drawings
Fig. 1 is the network diagram of setting up bidirectional LSP of prior art 1;
Fig. 2 is the network diagram of setting up bidirectional LSP of prior art 2;
Fig. 3 sets up bidirectional LSP structure block diagram for prior art;
Fig. 4-1 is the system flow chart of setting up bidirectional LSP according to the embodiment of the invention;
Fig. 4-2 is the system flow chart of setting up bidirectional LSP according to the embodiment of the invention;
Fig. 4-3 is the system flow chart according to the management bidirectional LSP of the embodiment of the invention;
Fig. 5-1 is the network diagram of setting up bidirectional LSP according to first embodiment of the invention;
Fig. 5-2 is the sequential flow chart of setting up bidirectional LSP according to first embodiment of the invention;
Fig. 6-1 is the network diagram of setting up bidirectional LSP according to second embodiment of the invention;
Fig. 6-2 is the sequential flow chart of setting up bidirectional LSP according to second embodiment of the invention;
Fig. 7-1 is the network diagram of setting up bidirectional LSP according to third embodiment of the invention;
Fig. 7-2 is the sequential flow chart of setting up bidirectional LSP according to third embodiment of the invention;
Fig. 8-1 is the network diagram of setting up bidirectional LSP according to fourth embodiment of the invention;
Fig. 8-2 is the sequential flow chart of setting up bidirectional LSP according to fourth embodiment of the invention;
Fig. 9-1 is the network diagram of setting up bidirectional LSP according to fifth embodiment of the invention;
Fig. 9-2 is the sequential flow chart of setting up bidirectional LSP according to fifth embodiment of the invention;
Figure 10 is the structure block diagram according to the embodiment of the invention.
Embodiment
In view of above-mentioned existing in prior technology problem, core concept of the present invention is: before setting up bidirectional LSP, source node detects professional available forward LSP and the reverse LSP that local terminal comprises; If local terminal does not have available described forward LSP, local terminal directly initiates to set up described forward LSP; If local terminal does not have described reverse LSP, local terminal notifies destination node to set up described reverse LSP by point-to-point mode; Destination node is set up described reverse LSP.
Wherein, source node here and destination node can be LSR (Label SwitchedRouter, LSR), the notification message that source node sends to destination node can specify reverse LSP correspondence FEC (Forwarding Equivalence Class, FEC), traffic engineering parameter, qos parameter, bandwidth parameter and the relevant Control Parameter of other LSP.Wherein, to the purpose fringe node, notification message is transparent to intermediate node via the intermediate node routing forwarding for point-to-point notification message, only simple this notification message of routing forwarding of intermediate node and not in this notification message on the IP layer content of load handle.
Either party can set up success message with the notice opposite end to the other side's transmission after successfully setting up LSP, in case the LSR node detection can be used to local terminal forward LSP and reverse LSP, just binding these two unidirectional LSP becomes a bidirectional LSP, and binding successfully, the back sends the binding success message to destination node.If setting up the LSP failure, any end LSR node can set up failed message to the destination node transmission, or by otherwise perception automatically of local terminal, as adopting handshake mechanism.Tag changeable path is set up forward LSP failure or is set up reverse LSP failure by node discovery local terminal, then carries out fault and abnormality processing.
After bidirectional LSP is set up, transmit point-to-point control messages between the destination node (being the source node of reverse LSP) of the source node of forward LSP (being the destination node of reverse LSP) and forward LSP and be in charge of bidirectional LSP, as setting up, bind, upgrade and safeguard, remove bidirectional LSP etc.Such as in the RSVP-TE signaling, directly managing bidirectional LSP as point-to-point control messages between the bidirectional LSP fringe node with regard to available use Notify message.
Here it is to be noted, forward LSP and and oppositely LSP be at the initiator of business, in order to describe clearlyer, agreement will trigger the source node of setting up two-way services and be called forward (foward) towards the direction of destination node, and its correspondence is called oppositely (backward) by destination node towards the direction of source node.Below in conjunction with accompanying drawing embodiments of the invention are described further.
According to thought of the present invention, Fig. 4-1 is for setting up the system flow chart of bidirectional LSP according to the embodiment of the invention.The process of setting up bidirectional LSP comprises the steps:
S401: source node judges whether local terminal exists available forward LSP, if having forward LSP then enter S404, otherwise enters S402;
S402: initiate to set up forward LSP by source node;
S403: source node judges that whether local terminal successfully sets up forward LSP, if then enter S404, otherwise enters S409;
S404: source node judges whether to have available reverse LSP, if then enter S407, otherwise enters S405;
S405: source node directly notifies the opposite end destination node to initiate to set up reverse LSP;
S406: source node judges that whether the opposite end destination node successfully sets up reverse LSP, if then enter S407, otherwise enters S408;
S407: local binding forward LSP becomes bidirectional LSP with reverse LSP;
S408: directly notify opposite end binding forward LSP to become bidirectional LSP, enter S410 after finishing with reverse LSP;
S409: carry out fault and abnormality processing;
S410: process ends.
Among the step S402, after source node initiated to set up forward LSP, the forward LSP that initiates from the source node of forward LSP set up message and can follow traditional LSP label request message treatment mechanism and handle; Equally, destination node receive forward LSP from its upstream node set up follow after the message traditional label issue signaling process mechanism for the FEC of appointment in this message to its upstream node distributing labels, distributed labels is announced to its upstream node by label mapping message, repeat this processing up to source node, thereby successfully set up forward LSP.
Among the step S405, source node is directly notified destination node to initiate to set up reverse LSP and is specially: will indicate the information of setting up reverse LSP and corresponding parameter directly to send to destination node from source node; Destination node receives this notice, initiates to set up reverse LSP, and its process of setting up reverse LSP is set up the machine-processed identical of forward LSP with above-mentioned source node, all defers to traditional standard LSP and sets up treatment mechanism.Wherein corresponding parameter information comprises: specify the FEC, qos parameter, traffic engineering parameter, bandwidth parameter etc. of reverse LSP correspondence and the relevant Control Parameter of other LSP etc.
In the step 406, if destination node is successfully set up reverse LSP, send reverse LSP to source node and set up acknowledge message, source node determines successfully to have set up reverse LSP after receiving and oppositely setting up acknowledge message.
Fig. 4-2 is for setting up another system flow chart of bidirectional LSP according to the embodiment of the invention.Its difference is that the forward LSP of the corresponding FEC that source node judgement local terminal comprises is different with the order of reverse LSP, judges whether to have reverse LSP among Fig. 4-2 earlier and judges whether to have forward LSP again.According to thought of the present invention, the sequencing of change judging, or the forward LSP that has of periodic test local terminal and oppositely the situation etc. of LSP do not exceed invention which is intended to be protected.
Fig. 5-1 is the network diagram of setting up bidirectional LSP of first embodiment of the invention, and Fig. 5-2 is for setting up the sequential flow chart of bidirectional LSP accordingly.
Referring to Fig. 5-1 and Fig. 5-2, in the first embodiment of the present invention,, there are not available forward LSP and reverse LSP at this moment on the source node of forward LSP with the source node of LSR node R 0 as forward LSP.The process of setting up bidirectional LSP is:
S501: at first R0 sets up message [(1)] by LSP and notifies the downstream node R1 of its forward LSP to set up forward LSP, receive this message [(1)] afterwards R1 send corresponding forward LSP to its downstream node R2 and set up request message [(2)], receive this message [(2)] afterwards R2 be that the destination node of forward LSP sends corresponding forward LSP and sets up request message [(3)] to its downstream node R5.
S502: the destination node R5 of forward LSP is receiving that forward LSP sets up request message [(3)] and follows traditional LSP afterwards and set up treatment mechanism to its upstream node R2 issue label mapping message [(4)], receive this message [(4)] afterwards R2 set up acknowledge message [(5)] to its upstream node R1 issue, receive this message [(5)] afterwards R1 be that acknowledge message [(6)] is set up in the source node issue of forward LSP to its upstream node R0, so far forward LSP successfully sets up.
S503: after forward LSP successfully set up, the source node R0 of forward LSP directly notified the destination node R5 of forward LSP to initiate to set up reverse LSP by the message [(7)] of point-to-point.
S504:R5 is receiving that this notification message [(7)] initiates to set up reverse LSP afterwards.Destination node R5 utilizes the information (as FEC, qos parameter, flow process engineering parameter etc.) that comprises in the notification message [(7)] to initiate to set up reverse LSP.R5 sets up request message [(8)] to node R 2 transmissions of its reverse LSP at the reverse LSP that specifies FEC, receive R2 after this message and send at the reverse LSP that specifies FEC to the node R 1 of its reverse LSP and set up request message [(9)], receive after this message R1 and send at the reverse LSP that specifies FEC to its neighbor node R0 and set up request message [(10)].
S505: the source node R0 of forward LSP is receiving that reverse LSP sets up request message [(10)] and follows traditional LSP afterwards and set up treatment mechanism and set up acknowledge message [(11)] to 1 issue of its node R, receive this message [(11)] afterwards R1 set up acknowledge message [(12)] to 2 issues of its node R, receive this message [(12)] afterwards R2 set up acknowledge message [(13)] to 5 issues of its node R, so far oppositely LSP successfully sets up.
S506: destination node R5 sends reverse LSP by point to point system to source node R0 and sets up acknowledge message, and it is bidirectional LSP with reverse LSP that source node R0 receives this message binding forward; Source node R0 also sets up bidirectional LSP by point to point system notice destination node R5, and it is bidirectional LSP with reverse LSP that destination node R5 receives this message binding forward LSP.
As forward LSP with after oppositely LSP sets up successfully, the source node of forward LSP (being the destination node of reverse LSP) R0 becomes a bidirectional LSP by the message [(7)] of point-to-point and destination node (being the source node of reverse LSP) the last binding of R5 forward and the reverse LSP of forward LSP.
In the present embodiment, the path of the reverse LSP that destination node R5 sets up among the step S504 is identical with the forward LSP path that R0 sets up.Wherein LSP sets up request message and is generally label request message such as RSVP-traffic engineering (Resource Reservation Protocol-Traffic Engineering, RSVP-TE) Path message, and LSP set up the RESV message that acknowledge message is generally label mapping message such as RSVP-TE.
Fig. 6-1 is the network diagram of setting up bidirectional LSP of second embodiment of the invention, and Fig. 6-2 is for setting up the sequential flow chart of bidirectional LSP accordingly.The process of setting up bidirectional LSP among second embodiment and first embodiment is basic identical, its difference is, reverse LSP uses different paths with forward LSP among second embodiment, and the reverse LSP path identical with forward LSP use among first embodiment no longer is repeated in this description herein.
Fig. 7-1 is the network diagram of setting up bidirectional LSP of third embodiment of the invention, and Fig. 7-2 is for setting up the sequential flow chart of bidirectional LSP accordingly.Referring to Fig. 7-1 and Fig. 7-2, in the third embodiment of the present invention, with the source node of LSR node R 0 as forward LSP, this moment forward LSP source node on existing available reverse LSP, only need set up forward LSP and on fringe node, bind and get final product for setting up bidirectional LSP.In this embodiment, having set up behind the forward LSP mode by point-to-point sends the binding success message to peer node and sets up bidirectional LSP with notice opposite end binding forward and reverse LSP.
Fig. 8-1 is the network diagram of setting up bidirectional LSP of fourth embodiment of the invention, and Fig. 8-2 is for setting up the sequential flow chart of bidirectional LSP accordingly.Referring to Fig. 8-1 and Fig. 8-2, in the fourth embodiment of the present invention, with the source node of LSR node R 0 as forward LSP, with different among the 3rd embodiment be, this moment forward LSP source node on existing available forward LSP, only need set up reverse LSP and on fringe node, bind and get final product for setting up bidirectional LSP.In this embodiment, directly set up reverse LSP by the message informing opposite end destination node R5 initiation of point-to-point.After oppositely LSP sets up, set up bidirectional LSP at local terminal R0 binding forward and reverse LSP, and set up bidirectional LSP by the message informing opposite end R5 binding forward and the reverse LSP of point-to-point.
Fig. 9-1 is the network diagram of setting up bidirectional LSP of fifth embodiment of the invention, and Fig. 9-2 is for setting up the sequential flow chart of bidirectional LSP accordingly.Referring to Fig. 9-1 and Fig. 9-2, in the fifth embodiment of the present invention, with the source node of LSR node R 0 as forward LSP, the same with the 4th embodiment on the source node of forward LSP existing available forward LSP, only need set up reverse LSP and on fringe node, bind and get final product for setting up bidirectional LSP.Directly the message informing opposite end destination node R5 by point-to-point initiates to set up reverse LSP.After oppositely LSP sets up, set up bidirectional LSP at local terminal R0 binding forward and reverse LSP, and set up bidirectional LSP by the message informing opposite end R5 binding forward and the reverse LSP of point-to-point.This embodiment is to set up reverse LSP with the difference of the 4th embodiment and forward LSP adopts different paths.
It is pointed out that in various embodiments of the present invention, if any LSR node detect local terminal comprise the forward LSP of corresponding FEC and oppositely LSP just can bind this forward LSP and reverse LSP, whether bind separate with the opposite end.
According to thought of the present invention, Figure 10 shows that structure block diagram according to the embodiment of the invention, the interelement signaling flow that has also shown device among the figure to.This device comprises that a detecting unit, sends notification unit, a retransmission unit, a LSP performance element, a binding unit, a fault and exception processing unit, a LSP administrative unit.
Detecting unit is used to detect this end node and comprises the forward LSP of corresponding FEC and the reverse situation of LSP, if do not have forward LSP or reverse LSP then notify the transmission notification unit, if having forward LSP and reverse LSP simultaneously, then notice binding unit is bound.
Send notification unit, be used for comprising the notification message that the LSP of corresponding FEC is set up in indication according to the testing result establishment of described detecting unit, set up the notification message of forward LSP if receive the notice that lacks forward then send indication, indicate the notification message of setting up reverse LSP if receive to lack reverse notice then send.
Retransmission unit is used for receiving each control messages from other module of local terminal or peer node, and is forwarded to respective modules according to the information that receives.
The LSP performance element receives sets up the forward notice, begins to carry out the functions such as foundation, forwarding of LSP, can be by traditional label forwarding mechanism works.Wherein the forwarding of the forwarding of LSP and control messages is separate, available different control channel.
The binding unit receives the notice binding message of detecting unit, and promptly local terminal has forward LSP and oppositely during LSP, this forward LSP and reverse LSP are bound in the binding unit when detecting unit detects.
Fault and exception processing unit when forward LSP sets up failure or reverse LSP foundation failure or other failure exception, then carry out corresponding fault and abnormality processing.
The LSP administrative unit manages and safeguards that its administrative messag is transmitted by retransmission unit to bidirectional LSP, independent with the passage that the traditional mechanism label forwarding adopts.Administrative messag comprises sets up message, binding message, updating message, maintain message, tear down message.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (18)
1. a method of setting up bidirectional LSP is characterized in that, described method comprises:
If source node does not have professional available forward LSP, then source node is directly set up described forward LSP;
If source node does not have professional available reverse LSP, then notify destination node to set up described reverse LSP by point-to-point mode;
Destination node is set up described reverse LSP.
2. method according to claim 1 is characterized in that, described method also comprises: after destination node is successfully set up described reverse LSP, successfully set up described reverse LSP by point-to-point mode while source node.
3. method according to claim 1 is characterized in that, described method also comprises: source node is bound described forward LSP and described reverse LSP when having professional available forward LSP and reverse LSP.
4. method according to claim 1 is characterized in that, described method also comprises: destination node is bound described forward LSP and described reverse LSP when described forward LSP with corresponding FEC and described reverse LSP.
5. method according to claim 1, it is characterized in that, describedly notify destination node to set up described reverse LSP by point-to-point mode, specifically comprise: source node sends point-to-point notification message to destination node, and described specified notification message comprises: professional reverse LSP FEC, qos parameter, traffic engineering parameter, the bandwidth parameter relevant with described reverse LSP set up in indication.
6. method according to claim 1 is characterized in that, the mode that described destination node is set up described reverse LSP is: adopt the path identical with described forward LSP to initiate to set up described reverse LSP.
7. method according to claim 1 is characterized in that, the mode that described destination node is set up described reverse LSP is: adopt the path different with described forward LSP to initiate to set up described reverse LSP.
8. method according to claim 3 is characterized in that, described method also comprises: adopt point-to-point mode to send or receive label control and management message between source node and destination node.
9. a LSR is characterized in that, comprises sending notification unit, retransmission unit;
Described transmission notification unit is used for when the professional available LSP that local terminal does not have, and creates to comprise the notification message that described professional corresponding LSP is set up in indication; Described retransmission unit is used to receive and transmit the control messages that comprises described notification message;
Described retransmission unit sends described notification message downstream by point-to-point mode.
10. LSR according to claim 9 is characterized in that, described transmission notification unit, and when local terminal did not have the forward LSP of described business, the notice local terminal initiated to set up described forward LSP.
11. LSR according to claim 10 is characterized in that, described router also comprises the LSP performance element, is used for initiating to set up described forward LSP.
12. LSR according to claim 9 is characterized in that, described route also comprises the binding unit, and when local terminal has the forward LSP of described business and oppositely during LSP, this forward LSP and reverse LSP are bound in described binding unit.
13. LSR according to claim 9 is characterized in that, described router also comprises the LSP administrative unit, is used to manage described forward LSP and reverse LSP; Described administrative messag unit will comprise control described reverse LSP administrative messag via described retransmission unit, send downstream by point-to-point mode.
14. a tag changeable path is by system, comprise at least two LSRs, it is characterized in that, when the source LSR does not have professional available reverse LSP at local terminal, notify the place LSR to set up described reverse LSP by point-to-point mode; The place LSR is set up described reverse LSP.
15. tag changeable path according to claim 14 is characterized in that by system, when the source LSR did not have professional available forward LSP at local terminal, local terminal initiated to set up described forward LSP.
16. by system, it is characterized in that according to claim 14 or 15 described tag changeable paths the source LSR has professional available forward LSP and oppositely during LSp, binds described forward LSP and described reverse LSP at local terminal.
17. by system, it is characterized in that according to claim 14 or 15 described tag changeable paths the place LSR has professional available forward LSP and oppositely during LSP, binds described forward LSP and described reverse LSP at local terminal.
18. tag changeable path according to claim 14 be is characterized in that by system, transmits the management control messages of bidirectional LSP between source LSR and the place LSR by point-to-point mode, realizes the control and management of described bidirectional LSP.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100629930A CN101155178B (en) | 2006-09-30 | 2006-09-30 | Method, device and system for establishing bidirectional LSP in multi-protocol label switching |
| PCT/CN2007/001698 WO2008043230A1 (en) | 2006-09-30 | 2007-05-25 | Method, device and system for establishing a bi-directional label switched path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100629930A CN101155178B (en) | 2006-09-30 | 2006-09-30 | Method, device and system for establishing bidirectional LSP in multi-protocol label switching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101155178A true CN101155178A (en) | 2008-04-02 |
| CN101155178B CN101155178B (en) | 2010-08-04 |
Family
ID=39256615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100629930A Active CN101155178B (en) | 2006-09-30 | 2006-09-30 | Method, device and system for establishing bidirectional LSP in multi-protocol label switching |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101155178B (en) |
| WO (1) | WO2008043230A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860523A (en) * | 2009-04-08 | 2010-10-13 | 华为技术有限公司 | Method and device for updating combined bidirectional label exchange path binding relationship |
| WO2010127570A1 (en) * | 2009-05-08 | 2010-11-11 | 华为技术有限公司 | Method, device and system for establishing bidirectional point-to-multipoint label switched path |
| CN102143038A (en) * | 2010-06-23 | 2011-08-03 | 华为技术有限公司 | Service creation method and node |
| CN102170392A (en) * | 2010-02-26 | 2011-08-31 | 中兴通讯股份有限公司 | Method and system for establishing associated double-way label switching path |
| CN102231704A (en) * | 2011-06-24 | 2011-11-02 | 中兴通讯股份有限公司 | Method and apparatus for disposing service in RSVP-TE dynamic tunnel |
| WO2012041142A1 (en) * | 2010-09-30 | 2012-04-05 | 中兴通讯股份有限公司 | Method and system for establishing and removing bidirectional point-to-multipoint label switched path |
| CN101771551B (en) * | 2008-12-29 | 2012-11-21 | 华为技术有限公司 | Method for streaming media distribution in virtual special multicasting service, device and system thereof |
| WO2012167516A1 (en) * | 2011-09-06 | 2012-12-13 | 华为技术有限公司 | Method, apparatus and system for generating label forwarding table in ring topology |
| WO2018121705A1 (en) * | 2016-12-30 | 2018-07-05 | 北京奇虎科技有限公司 | Stream data bidirectional transmission method and device |
| WO2018205884A1 (en) * | 2017-05-10 | 2018-11-15 | 中兴通讯股份有限公司 | Signalling configuration method and apparatus |
| CN113660028A (en) * | 2021-08-16 | 2021-11-16 | 北京邮电大学 | Bidirectional LSP processing method, electronic device, storage medium, and program product |
| CN107645447B (en) * | 2016-07-21 | 2022-04-22 | 中兴通讯股份有限公司 | Label Switching Path (LSP) creation method and device |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9729439B2 (en) | 2014-09-26 | 2017-08-08 | 128 Technology, Inc. | Network packet flow controller |
| US10277506B2 (en) | 2014-12-08 | 2019-04-30 | 128 Technology, Inc. | Stateful load balancing in a stateless network |
| US9736184B2 (en) | 2015-03-17 | 2017-08-15 | 128 Technology, Inc. | Apparatus and method for using certificate data to route data |
| US9729682B2 (en) | 2015-05-18 | 2017-08-08 | 128 Technology, Inc. | Network device and method for processing a session using a packet signature |
| US10476583B2 (en) | 2015-08-13 | 2019-11-12 | Viasat, Inc. | Managed time division duplexed baseband signaling |
| US9762485B2 (en) | 2015-08-24 | 2017-09-12 | 128 Technology, Inc. | Network packet flow controller with extended session management |
| US9871748B2 (en) | 2015-12-09 | 2018-01-16 | 128 Technology, Inc. | Router with optimized statistical functionality |
| US9985883B2 (en) | 2016-02-26 | 2018-05-29 | 128 Technology, Inc. | Name-based routing system and method |
| US10205651B2 (en) | 2016-05-13 | 2019-02-12 | 128 Technology, Inc. | Apparatus and method of selecting next hops for a session |
| US10298616B2 (en) | 2016-05-26 | 2019-05-21 | 128 Technology, Inc. | Apparatus and method of securing network communications |
| US10091099B2 (en) | 2016-05-31 | 2018-10-02 | 128 Technology, Inc. | Session continuity in the presence of network address translation |
| US11075836B2 (en) | 2016-05-31 | 2021-07-27 | 128 Technology, Inc. | Reverse forwarding information base enforcement |
| US10200264B2 (en) | 2016-05-31 | 2019-02-05 | 128 Technology, Inc. | Link status monitoring based on packet loss detection |
| US9832072B1 (en) | 2016-05-31 | 2017-11-28 | 128 Technology, Inc. | Self-configuring computer network router |
| US10841206B2 (en) | 2016-05-31 | 2020-11-17 | 128 Technology, Inc. | Flow modification including shared context |
| US10257061B2 (en) | 2016-05-31 | 2019-04-09 | 128 Technology, Inc. | Detecting source network address translation in a communication system |
| US10009282B2 (en) | 2016-06-06 | 2018-06-26 | 128 Technology, Inc. | Self-protecting computer network router with queue resource manager |
| US9985872B2 (en) | 2016-10-03 | 2018-05-29 | 128 Technology, Inc. | Router with bilateral TCP session monitoring |
| US10425511B2 (en) | 2017-01-30 | 2019-09-24 | 128 Technology, Inc. | Method and apparatus for managing routing disruptions in a computer network |
| EP4195597A1 (en) | 2017-03-07 | 2023-06-14 | 128 Technology, Inc. | Routing device using flow duplication |
| US10432519B2 (en) | 2017-05-26 | 2019-10-01 | 128 Technology, Inc. | Packet redirecting router |
| US11165863B1 (en) | 2017-08-04 | 2021-11-02 | 128 Technology, Inc. | Network neighborhoods for establishing communication relationships between communication interfaces in an administrative domain |
| US20190253341A1 (en) | 2018-02-15 | 2019-08-15 | 128 Technology, Inc. | Service Related Routing Method and Apparatus |
| EP4140106A1 (en) | 2020-04-23 | 2023-03-01 | Juniper Networks, Inc. | Session monitoring using metrics of session establishment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8014380B2 (en) * | 2002-07-03 | 2011-09-06 | Alcatel Lucent | Method and system for automatically establishing a return label switched path |
| CN1254054C (en) * | 2002-12-26 | 2006-04-26 | 华为技术有限公司 | Method for constructing bidirectional lable swap path in optical network |
| US7596140B2 (en) * | 2003-07-07 | 2009-09-29 | Alcatel-Lucent Usa Inc. | Methods and devices for creating bi-directional LSPs |
-
2006
- 2006-09-30 CN CN2006100629930A patent/CN101155178B/en active Active
-
2007
- 2007-05-25 WO PCT/CN2007/001698 patent/WO2008043230A1/en active Application Filing
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771551B (en) * | 2008-12-29 | 2012-11-21 | 华为技术有限公司 | Method for streaming media distribution in virtual special multicasting service, device and system thereof |
| EP2405625A4 (en) * | 2009-04-08 | 2012-05-16 | Huawei Tech Co Ltd | Method and apparatus for updating binding relationship of associated bidirectional label switched path |
| US8842668B2 (en) | 2009-04-08 | 2014-09-23 | Huawei Technologies Co., Ltd. | Method and apparatus for updating binding relationship of associated bidirectional label switched path |
| CN101860523A (en) * | 2009-04-08 | 2010-10-13 | 华为技术有限公司 | Method and device for updating combined bidirectional label exchange path binding relationship |
| EP2405625A1 (en) * | 2009-04-08 | 2012-01-11 | Huawei Technologies Co., Ltd. | Method and apparatus for updating binding relationship of associated bidirectional label switched path |
| WO2010127570A1 (en) * | 2009-05-08 | 2010-11-11 | 华为技术有限公司 | Method, device and system for establishing bidirectional point-to-multipoint label switched path |
| CN102170392A (en) * | 2010-02-26 | 2011-08-31 | 中兴通讯股份有限公司 | Method and system for establishing associated double-way label switching path |
| CN102143038B (en) * | 2010-06-23 | 2013-10-09 | 华为技术有限公司 | Service creation method and node |
| CN102143038A (en) * | 2010-06-23 | 2011-08-03 | 华为技术有限公司 | Service creation method and node |
| CN102447611A (en) * | 2010-09-30 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for establishing bidirectional point-to-multipoint label switched path as well as method and system for removing bidirectional point-to-multipoint label switched path |
| WO2012041142A1 (en) * | 2010-09-30 | 2012-04-05 | 中兴通讯股份有限公司 | Method and system for establishing and removing bidirectional point-to-multipoint label switched path |
| CN102447611B (en) * | 2010-09-30 | 2015-06-10 | 中兴通讯股份有限公司 | Method and system for establishing bidirectional point-to-multipoint label switched path as well as method and system for removing bidirectional point-to-multipoint label switched path |
| CN102231704A (en) * | 2011-06-24 | 2011-11-02 | 中兴通讯股份有限公司 | Method and apparatus for disposing service in RSVP-TE dynamic tunnel |
| CN102231704B (en) * | 2011-06-24 | 2017-09-19 | 中兴通讯股份有限公司 | The method and apparatus of service deployment in a kind of RSVP TE dynamic tunnels |
| WO2012174955A1 (en) * | 2011-06-24 | 2012-12-27 | 中兴通讯股份有限公司 | Method and device for service deployment in rsvp-te dynamic tunnel |
| WO2012167516A1 (en) * | 2011-09-06 | 2012-12-13 | 华为技术有限公司 | Method, apparatus and system for generating label forwarding table in ring topology |
| US9178811B2 (en) | 2011-09-06 | 2015-11-03 | Huawei Technologies Co., Ltd. | Method, apparatus and system for generating label forwarding table on ring topology |
| CN107645447B (en) * | 2016-07-21 | 2022-04-22 | 中兴通讯股份有限公司 | Label Switching Path (LSP) creation method and device |
| WO2018121705A1 (en) * | 2016-12-30 | 2018-07-05 | 北京奇虎科技有限公司 | Stream data bidirectional transmission method and device |
| WO2018205884A1 (en) * | 2017-05-10 | 2018-11-15 | 中兴通讯股份有限公司 | Signalling configuration method and apparatus |
| CN108880766A (en) * | 2017-05-10 | 2018-11-23 | 中兴通讯股份有限公司 | Signaling configuration method and device |
| CN113660028A (en) * | 2021-08-16 | 2021-11-16 | 北京邮电大学 | Bidirectional LSP processing method, electronic device, storage medium, and program product |
| CN113660028B (en) * | 2021-08-16 | 2022-05-20 | 北京邮电大学 | Bidirectional LSP processing method, electronic device and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101155178B (en) | 2010-08-04 |
| WO2008043230A1 (en) | 2008-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101155178B (en) | Method, device and system for establishing bidirectional LSP in multi-protocol label switching | |
| US8553694B2 (en) | Pseudo wire label reflector, an edge equipment, and a two-layer virtual network | |
| EP2190150B1 (en) | A method, device and system of multi-protocol label exchange traffic engineering flow capacity switch | |
| US9998362B2 (en) | Centralized data path establishment augmented with distributed control messaging | |
| CN100461755C (en) | Data message transmitting method and node equipment based on MPLS TE tunnel | |
| EP1758298B1 (en) | Method and system for realizing the reliability guarantee of end-to-end quality of service | |
| EP1953956A1 (en) | Communication network system and leaf-node network element of the multicasting tree signal transmission method and node network element thereof | |
| WO2011009380A1 (en) | Parallel cross-domain failure recovery method and device for multi-layer multi-domains distributed optical network | |
| EP2866396B1 (en) | Label switching path establishment method, data forwarding method and device | |
| CN101478474B (en) | Method, apparatus and system for cross-domain MPLS TE LSP establishment | |
| CN101013995A (en) | Network node equipment, network system and tunnel establishment method | |
| CN101212455B (en) | Link aggregation control method | |
| WO2011110110A1 (en) | Method, system and node device for establishing label switch path | |
| KR101688682B1 (en) | Fast lsp alert mechanism | |
| CN101155179B (en) | Method for removing ring circuit during multi-protocol label switching | |
| US7953015B2 (en) | Method for ensuring reliability in network | |
| CN101286863A (en) | Implementing system and method of multicast application service based on MPLS | |
| Aslam et al. | NPP: A facility based computation framework for restoration routing using aggregate link usage information | |
| WO2012075914A1 (en) | Method and system for implementing point-to-multipoint label switched path protection | |
| CN101764732B (en) | Method, network and node device for establishing Ethernet virtual connection | |
| CN101677294B (en) | Multilayer network resource optimization method, system and direct optical path server | |
| EP2466813A1 (en) | Method and system for determining initiator and terminator in forwarding adjacency label switched path | |
| CN101022449B (en) | Method, system and nodal equipment for establishing bypass LSP | |
| CN101166185A (en) | Method and system for service exit of data link | |
| CN102201970A (en) | Method and system for performing routing optimization on associated bidirectional label switched path (LSP) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |