CN101123563B - A method, device and network for stable restart of multi-hop counterfeit wire - Google Patents
A method, device and network for stable restart of multi-hop counterfeit wire Download PDFInfo
- Publication number
- CN101123563B CN101123563B CN2006100891622A CN200610089162A CN101123563B CN 101123563 B CN101123563 B CN 101123563B CN 2006100891622 A CN2006100891622 A CN 2006100891622A CN 200610089162 A CN200610089162 A CN 200610089162A CN 101123563 B CN101123563 B CN 101123563B
- Authority
- CN
- China
- Prior art keywords
- node
- module
- steadily
- signaling
- reset node
- 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.)
- Active
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention discloses a method used for a smooth reboot in the case of multi-hop pseudowires, which includes three steps. In the second-layer VPN data retransmission step, when a signaling session is interrupted between the edge device of an operator and the edge device of a neighboring operator due to the reboot of a second-layer VPN signalling protocol, the edge device of the operator maintains the second-layer VPN data retransmission; in the reboot node processing step, in order to enter into the reboot node processing, the edge device of the operator is set as a reboot node; in the auxiliary node processing step, in order to enter into the auxiliary node processing, the edge device of the neighboring operator is set as an auxiliary node. The present invention realizes the smooth reboot in the case of dynamic multi-hop pseudowires, realizes non-interrupted retransmission in the course of the reboot of the second-layer VPN signaling protocol and increases the stability of a second-layer VPN network based on multi-hop pseudowires.
Description
Technical field
The present invention relates to the virtual private networks field, relate in particular to steady method for restarting and device under the multi-hop counterfeit wire in a kind of virtual private network in second layer network.
Background technology
Virtual private network in second layer network technology, comprise virtual privately owned ptp services (Virtual Private Wire Service, VPWS) and virtual private LAN service (Virtual Private LAN Service, VPLS), (Pseudo Wire is called for short PW, on the packet network tunnel all to be based on pseudo-line, the mechanism of point-to-point two layer services of emulation between two provider edge equipments) realize virtual private network in second layer network (Virtual Private Netwrok, VPN) business.The pseudo-line of various two layer services of carrying emulation is gone up in the tunnel that provides on packet network (Packet Switch Network Tunnel, PSN Tunnel), forms two layers of virtual link; Virtual two layers of link and customer edge devices (Customer Edge, two layers of link CE) shine upon mutually, form point-to-point connection, are called the VPWS business; Two layers of virtual link form the connection of point-to-multipoint, and LAN services of emulation becomes the VPLS business.
Pseudo-line (the Single-Segment Pseudo Wire of single-hop, SS-PW) by provider edge equipment (Provider Edge, PE) form, for directly at the PE at two PW two ends equipment (Ultimate PE, U-PE) PW that sets up between, (Multi-Segment Pseudo Wire MS-PW) has also comprised middle provider's edge device (the Switching Provider Edge of multi-hop counterfeit wire to multi-hop counterfeit wire, S-PE), the multi-hop PW that forms for a plurality of PW segmentations.Because the pseudo-line of single-hop causes rolling up of PSN Tunnel quantity under the very many situations of PE quantity, (Provider P) becomes complicated to make PE and operator; There is problem of implementation in the pseudo-line of single-hop aspect cross-domain simultaneously.Because the shortcoming of the pseudo-line of above single-hop has proposed multi-hop counterfeit wire, improving the utilance of PSN Tunnel, and solve the cross-domain problem of pseudo-line.Be illustrated in figure 1 as two-layer VPN networking diagram based on multi-hop counterfeit wire, U-PE1, S-PE2, S-PE3, S-PE4 and U-PE5 set up the pseudo-line SS-PW of single-hop each other, multi-hop counterfeit wire MS-PW is made up of four segmentation PW (being PW1, PW2, PW3 and PW4), and the segmentation PW that constitutes MS-PW is also referred to as PW section (PW Segment).Transfer of data occur in label switched path (Label Switch Path, LSP) on, LSP1 and LSP2 are MS-PW both direction label switched path.
Multi-hop counterfeit wire has two kinds to set up mode, and a kind of is static multi-hop counterfeit wire, and a kind of is dynamic multi-hop counterfeit wire.When setting up static multi-hop counterfeit wire, except the foundation configuration that need on U-PE, carry out pseudo-line, also need to specify S-PE, and S-PE is carried out foundation and the binding configuration of PW Segment.When setting up dynamic multi-hop counterfeit wire, only need on U-PE, carry out the foundation configuration of pseudo-line, needn't carry out foundation and the binding configuration of PW Segment S-PE; Setting up in the process of multi-hop counterfeit wire can dynamically be determined S-PE, and dynamically sets up and bind relevant PW Segment, thereby sets up whole piece MS-PW.Static multi-hop counterfeit wire PW Segment one by one is configured, and has brought burden to network management; And dynamically multi-hop counterfeit wire only needs U-PE is managed for configuration, and does not need extra configuration.
Steadily restarting under the static multi-hop counterfeit wire, there is no much differences with steadily restarting under the pseudo-line of single-hop, all shortcomings that static multi-hop counterfeit wire is not only arranged, and after steadily restarting failure, can not dynamically delete whole M S-PW, U-PE may perception less than the interruption of MS-PW, and cause losing of network traffics.
Therefore, the present invention is by carrying out certain expansion to steady reboot technology, provide a kind of and under dynamic multi-hop counterfeit wire situation, carried out the technology that two-layer VPN is steadily restarted, avoided steadily restarting transfer of data interruption and data-bag lost under the situation at static multi-hop counterfeit wire.
Summary of the invention
The object of the present invention is to provide and carry out the method and apparatus that two-layer VPN is steadily restarted under a kind of multi-hop counterfeit wire, be intended to solve the office defective of steady reboot technology under pseudo-line of existing single-hop and the static multi-hop counterfeit wire, avoid not losing owing to PE perceives transfer of data interruption and the network traffics that the interruption of MS-PW causes.
The present invention is achieved in that a kind of method that is used for steadily restarting under the multi-hop counterfeit wire, comprises as follows:
Steadily restart negotiation step, be used for all supporting steadily to restart function by restarting negotiation affirmation provider edge equipment and adjacent operator edge device;
Two-layer VPN data forwarding step, when described provider edge equipment restart because of the two-layer VPN signaling protocol cause and described adjacent operator edge device between during the signaling conversation, described provider edge equipment keeps the two-layer VPN data forwarding;
The reset node treatment step, described provider edge equipment is set to reset node, enters reset node and handles;
The auxiliary node treatment step, described adjacent operator edge device is set to auxiliary node, enters auxiliary node and handles;
Wherein, described reset node treatment step further comprises: under described reset node is not situation as the provider edge equipment of pseudo-line switching node, if signaling is recovered successfully between described reset node and the whole described auxiliary node, the signaling information before then described reset node recovers to restart; If signaling is recovered successfully between the described auxiliary node of described reset node and part, then described reset node carries out dismantling operation to recovering successful pseudo-line, and deletion has the pseudo-line forwarding message of stale mark; If signaling is recovered failure between described reset node and the whole described auxiliary node, then described reset node deletion has the pseudo-line forwarding information of stale mark.
Above-mentioned method, its characteristics be, described provider edge equipment is adjacent to be provided with one or more adjacent operator edge devices.
Above-mentioned method, its characteristics be, describedly steadily restarts negotiation step and comprise the timer negotiation step again.
Above-mentioned method, its characteristics are that described timer negotiation step comprises again rebuilds the timer negotiation step.
Above-mentioned method, its characteristics are that described timer negotiation step comprises again recovers the timer negotiation step.
Above-mentioned method, its characteristics are that described auxiliary node treatment step further comprises: if signaling is recovered successfully between described reset node and the described auxiliary node, then described auxiliary node helps the signaling information before described reset node recovers to restart; If signaling is recovered failure between described reset node and the described auxiliary node, the pseudo-line that then described auxiliary node deletion has the stale mark is transmitted message.
Above-mentioned method, its characteristics are, the step that described auxiliary node is deleted corresponding pseudo-line forwarding information further comprises: if described auxiliary node is the provider edge equipment as pseudo-line switching node, then described auxiliary node is removed the pseudo-line of its other end automatically.
Above-mentioned method, its characteristics are that described maintenance two-layer VPN data forwarding step is to realize by the forwarding information in the backup forwarding information administration module.
The steady rebooting device of a kind of two-layer VPN is used for steadily restarting under the multi-hop counterfeit wire, comprising:
One steadily restarts negotiation module, receive signaling session management information and OAM control information, and steadily restart module and auxiliary node to reset node and steadily restart module and send and steadily restart negotiation information, be used for consulting to confirm that by restarting provider edge equipment and adjacent operator edge device all support steadily to restart function;
One described reset node is steadily restarted module, receive the signaling session information and described steadily restart negotiation module steadily restart negotiation information, send forwarding information, and setting up pseudo-line information needed and pseudo-wire tag, to transmit a management information mutual, be used for described provider edge equipment and be set to reset node, carrying out reset node handles, described reset node is steadily restarted module and is carried out reset node and handle and further to comprise: under described reset node is not situation as the provider edge equipment of pseudo-line switching node, if signaling is recovered successfully between described reset node and the whole auxiliary node, the signaling information before then described reset node recovers to restart; If signaling is recovered successfully between the described auxiliary node of described reset node and part, then described reset node carries out dismantling operation to recovering successful pseudo-line, and deletion has the pseudo-line forwarding message of stale mark; If signaling is recovered failure between described reset node and the whole described auxiliary node, then described reset node deletion has the pseudo-line forwarding information of stale mark;
One described auxiliary node is steadily restarted module, receive the signaling session information and described steadily restart negotiation module steadily restart negotiation information, send forwarding information, and setting up pseudo-line information needed and pseudo-wire tag, to transmit a management information mutual, be used for described adjacent operator edge device and be set to auxiliary node, carry out auxiliary node and handle;
Wherein, when described provider edge equipment restart because of the two-layer VPN signaling protocol cause and described adjacent operator edge device between during the signaling conversation, described provider edge equipment keeps the two-layer VPN data forwarding.
Above-mentioned device, its characteristics be, describedly steadily restarts negotiation module and be used for further providing negotiation steadily to restart the timing parameters of function needs.
Above-mentioned device, its characteristics be, comprises that also one is used to realize steadily restart the time value of the timer of function, and described timer time value comprises again rebuilds the timer time value and recover the timer time value.
A kind of virtual private network in second layer network comprises the signaling protocol module, two-layer VPN protocol module and forwarding information administration module, described two-layer VPN protocol module comprises two-layer VPN agreement total control module, the two-layer VPN initialization module, the OAM control module, the PW mark is transmitted an administration module, two-layer VPN is steadily restarted module, the signaling session management module, message management module, VPN and PW database management module, it is characterized in that described two-layer VPN is steadily restarted module and comprised again:
One steadily restarts negotiation module, and the information by receiving the signaling session management module and the configuration information of OAM control module are steadily restarted module and auxiliary node to reset node and steadily restarted module and send negotiation information, the negotiation before being used to restart;
One described reset node is steadily restarted module, receive described information of steadily restarting negotiation module and signaling session management module, send message to described forwarding information administration module, and transmit an administration module with message management module and PW mark and carry out information interaction, being used for reset node keeps data forwarding and carries out the reset node processing when the two-layer VPN agreement is restarted, described reset node is steadily restarted module and is carried out reset node and handle and further to comprise: under described reset node is not situation as the provider edge equipment of pseudo-line switching node, if signaling is recovered successfully between described reset node and the whole auxiliary node, the signaling information before then described reset node recovers to restart; If signaling is recovered successfully between the described auxiliary node of described reset node and part, then described reset node carries out dismantling operation to recovering successful pseudo-line, and deletion has the pseudo-line forwarding message of stale mark; If signaling is recovered failure between described reset node and the whole described auxiliary node, then described reset node deletion has the pseudo-line forwarding information of stale mark;
One described auxiliary node is steadily restarted module, receive described information of steadily restarting negotiation module and signaling session management module, send message to described forwarding information administration module, and transmit an administration module with message management module and PW mark and carry out information interaction, be used for auxiliary node and carry out keeping data forwarding when the two-layer VPN agreement is restarted and carrying out auxiliary node and handle at reset node.
Above-mentioned network is characterized in that, comprises that also one is used to realize steadily restarting the timer of function.
Above-mentioned network is characterized in that, described timer comprises again to be rebuild timer and recover timer.
The invention provides the method and apparatus that is used for steadily restarting under the multi-hop counterfeit wire, realized steadily restarting under the dynamic multi-hop counterfeit wire, reduced the quantity of PSN Tunnel, alleviated the burden of PE and P router, solved the cross-domain problem of two-layer VPN simultaneously, and the nothing that can realize data in two-layer VPN signaling protocol restarting process interrupts transmitting, and has improved the two-layer VPN stability of network based on multi-hop counterfeit wire.
Description of drawings
Fig. 1 is based on the two-layer VPN networking structure figure of dynamic multi-hop counterfeit wire in the prior art;
Fig. 2 is a two-layer VPN protocol module cut-away view of the present invention;
Fig. 3 is that two-layer VPN of the present invention is steadily restarted the inside modules structure chart;
Fig. 4 is an auxiliary node processing module schematic flow sheet of the present invention;
Fig. 5 is a reset node processing module schematic flow sheet of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention has realized that steadily restarting under the dynamic multi-hop counterfeit wire solved the cross-domain problem of two-layer VPN, has guaranteed that the nothing of data in two-layer VPN signaling protocol restarting process interrupts transmitting, and has improved the two-layer VPN stability of network.
As shown in Figure 2, the two-layer VPN network based on multi-hop counterfeit wire of the present invention mainly comprises as lower module: signaling protocol module 109, two-layer VPN protocol module 10 and forwarding information administration module 110.
Wherein, this signaling protocol module 109, for being independent of a module of two-layer VPN agreement, the foundation of signaling session is provided to the two-layer VPN protocol module, may be label distribution protocol (Label Distribution Protocol, LDP) signaling session or Border Gateway Protocol (Border Gateway Protocol, BGP) session etc.
This two-layer VPN protocol module 10 comprises again as lower module: two-layer VPN agreement total control module 101, two-layer VPN initialization module 102, signaling session management module 103, message management module 104, PW mark transmit an administration module 105, VPN and PW database management module 106 and two-layer VPN is steadily restarted module 108.
Wherein, this two-layer VPN agreement total control module 101, other each modules of scheduling two-layer VPN agreement.When the two-layer VPN agreement was restarted, two-layer VPN agreement total control module 101 needed scheduling initialization module 102 to carry out the initialization of parameters.When the every business configuration of two-layer VPN, two-layer VPN agreement total control module 101 needs scheduling OAM control module 107, carries out the loading and the operation of every business;
This two-layer VPN initialization module 102 is used to finish the every function of initializing of two-layer VPN.This two-layer VPN initialization module 102 carries out initialization finish after, need signaling session management module 103 to detect present signaling session status, to determine whether to initiate immediately the foundation of two-layer VPN business;
This signaling session management module 103 is used to finish the needed signaling session management of PW, may be session of LDP signaling or bgp session etc.; Steadily restarting under the situation, need steadily restart module 108 to two-layer VPN and trigger;
This message management module 104 is used to finish and sets up the needed message of PW.(Label Distribution Protocol, signaling mechanism LDP) comprise mapping (Mapping) message, cancel (Withdraw) message, release (Release) message, notice (Notification) message etc. for tag distribution protocol.(Border Gateway Protocol, signaling mechanism BGP) comprise and carry Network Layer Reachable Information (Network Layer Reachability Information, bgp update message NLRI) etc. of supporting two-layer VPN for Border Gateway Protocol.For the message of all generation PW labels, unification here abbreviate the PW label mapping message as, and all remove the message of PW labels, the unified PW label tear down message that abbreviates as;
This PW mark is transmitted an administration module 105, be used to finish the management that the PW mark is transmitted item, and after this ground mark of PW (being that data are gone into label) and distal marker (being the data outgoing label) are bound successfully, send the PW marks to forwarding information administration module 110 and transmit an information.Steadily restarting under the situation, the PW mark is transmitted an administration module 105 and is obtained a PW mark forwarding information that is labeled as stale from mark forwarding information administration module 110;
This VPN and PW database management module 106 are used to finish the data management of VPN instance and PW example;
This OAM control module 107 is used to finish some configuration managements of two-layer VPN, comprises the configuration of two-layer VPN business, the configuration of steadily restarting etc.;
This two-layer VPN is steadily restarted module 108, is used to finish steadily restart negotiation, reset node handling process and auxiliary node handling process.
This forwarding information administration module 110 is transmitted item and corresponding PSN Tunnel for the complete PW mark of two-layer VPN protocol module management, forms the two-layer VPN mark and transmits; When the two-layer VPN signaling protocol on detecting reset node was restarted, backup PW mark was transmitted item, and stamps the stale mark.
This two-layer VPN agreement total control module 101 has interface with two-layer VPN initialization module 102, OAM control module 107 respectively; Two-layer VPN initialization module 102 is steadily restarted module 108 with two-layer VPN agreement total control module 101, a PW mark forwarding administration module 105, two-layer VPN respectively, signaling session management module 103 has interface; Signaling session management module 103 is steadily restarted module 108 with two-layer VPN initialization module 102, message management module 104, OAM control module 107, two-layer VPN respectively, signaling protocol module 109 has interface; Message management module 104 is steadily restarted module 108 with signaling session management module 103, two-layer VPN respectively, the PW mark is transmitted an administration module 105 interface; A PW mark forwarding administration module 105 is steadily restarted module 108 with two-layer VPN initialization module 102, message management module 104, VPN and PW database management module 106, OAM control module 107, two-layer VPN respectively, forwarding information administration module 110 has interface; VPN and PW database management module 106 are transmitted an administration module 105 with the PW mark respectively, two-layer VPN is steadily restarted module 108 interface; OAM control module 107 is transmitted an administration module 105 with two-layer VPN agreement total control module 101, signaling session management module 103, PW mark respectively, two-layer VPN is steadily restarted module 108 interface.Two-layer VPN is steadily restarted module 108 except having the interface with above-mentioned some modules, also with forwarding information administration module 110 interface is arranged.
As shown in Figure 3, this two-layer VPN is steadily restarted module 108 and is mainly comprised again with lower module:
Steadily restart negotiation module 201, major function comprises: 1, confirm that by signaling procedure the PE and the adjacent PE that take place steadily to restart support steadily to restart function; 2, in signaling protocol (signaling session management module 103 employed signalings), carry fault-tolerant session (Fault Tolerant Session) types value (Type Length Value, TLV), consult steadily to restart the timer parameter that function needs, comprise the time value of rebuilding timer and recovering timer.The negotiation of steadily restarting function occurs between reset node and the auxiliary node.
Auxiliary node is steadily restarted module 202, and major function comprises: 1, interruption has taken place in the signaling session between discovery and the adjacent PE, and auxiliary node keeps the two-layer VPN forwarding of data; If signaling is recovered successfully between 2 auxiliary nodes and the reset node, then auxiliary node helps the signaling information before reset node recovers to restart; If signaling is recovered failure between 3 auxiliary nodes and the reset node, auxiliary node is deleted corresponding PW forwarding information, and if auxiliary node be S-PE, then remove the PW (sending the PW tear down message) of its other end automatically to other end PE.
Reset node is steadily restarted module 203, major function comprises: 1, restarting of two-layer VPN signaling protocol taken place in PE, become reset node, but, continue to keep the two-layer VPN forwarding of data by the certain PW label forwarding information of forwarding information administration module 110 backups; If signaling is recovered all successes between 2 reset nodes and the whole adjacent PE, by the help of auxiliary node, the signaling information before reset node recovers to restart; If signaling is recovered successfully between the 3 reset nodes adjacent PE with part, reset node carries out dismantling operation (sending the PW tear down message to the adjacent PE that recovers successfully) to recovering successful PW, and deletes corresponding PW forwarding information; If signaling is recovered all to fail between 4 reset nodes and the whole adjacent PE, reset node is deleted corresponding PW forwarding information.
Wherein, this is steadily restarted negotiation module 201 and steadily restarts module 202, reset node with signaling session management module 103, OAM control module 107, auxiliary node respectively and steadily restart module 203 interface is arranged; Auxiliary node is steadily restarted module 202 has interface with signaling session management module 103, message management module 104, a PW mark forwarding administration module 105, forwarding information administration module 110 respectively; It is identical that the interface case that reset node is steadily restarted module 203 and auxiliary node are steadily restarted module 202.
As shown in Figure 4, steadily to restart the aid in treatment flow process of module 202 as follows for auxiliary node of the present invention:
Step 401: detect the signaling conversation, from the information that signaling session management module 103 provides, can detect certain signaling conversation, and this signaling session is used by the PW of correspondence;
Step 402: the PW mark is transmitted item stamp the stale mark, all PW marks that the signaling session is relevant are therewith transmitted the outgoing label (i.e. the label of receiving from far-end) of item and stamped the stale mark;
Step 403: proceed the two-layer VPN data forwarding, PE does not carry out the deletion that the PW mark is transmitted item, and forwarding module continues to keep forwarding of data;
Step 404: start and rebuild timer, begin rebuliding of signaling session this moment, the timing value of rebuilding timer provides by steadily restarting negotiation module 201, and the main effect of this timer is to limit the time that the signaling session rebulids;
Step 405: judge whether signaling session foundation is successful, if before rebuilding timer expiry, detect session from signaling session management module 103 and set up successfully, then next step changes step 406 over to, otherwise changes step 410 over to;
Step 406: start and recover timer, the timing value that recovers timer provides by steadily restarting negotiation module 201, and the main effect of this timer is to limit the time that PW recovers;
Step 407: recover the relevant PW mark of session and transmit item, auxiliary node PE is by sending the PW mapping message to reset node, and receive the PW mapping message that sends from reset node, carry out this locality of PW and the binding again of far-end label, and remove the stale mark that this PW mark is transmitted item;
Step 408: judge whether the recovery timer is overtime, if be timed the overtime triggering of device, then next step changes step 409 over to, otherwise changes step 412 over to;
Step 409: the PW that deletion still has the stale mark transmits item, this moment is owing to recover timer expiry, still the PW mark forwarding item that has the stale mark is the forwarding item that does not recover successful, need delete, while sends message to forwarding information administration module 110, notifies the corresponding PW mark of its deletion to transmit item;
Step 410: whether decision node is S-PE, auxiliary node has different operations for whether for the S-PE node, can learn whether be S-PE node (whether according to the specific implementation of MS-PW, can obtain this node is S-PE) from steadily restarting negotiation module 201.If the S-PE node, then next step changes step 411 over to, otherwise changes step 412 over to;
Step 411: send message to other end PE, remove corresponding PW.Because PW is made up of bidirectional LSP, PE need cancel local distributed labels (promptly going into label) to far-end by sending Withdraw message; Send Release message and discharge far-end PE distributed labels (being outgoing label), remove and do not recover successful PW to far-end;
Step 412: steadily restarting process finishes.
As shown in Figure 5, steadily to restart the reboot process flow process of module 203 as follows for reset node of the present invention:
Step 501: the signaling protocol initialization, mainly finish the configuration information that obtains the two-layer VPN business from configuration file, load the business configuration of two-layer VPN according to information;
Step 502: according to the two-layer VPN business information of configuration, obtain the PW mark that has the stale mark and transmit item, major function is to obtain by the PW mark that has the stale mark of its backup to transmit item from forwarding information administration module 110, and deposits VPN and PW database management module 106 in.(forwarding information administration module 110 is detecting the signaling conversation, and after support node steadily restarts, and just carries out the backup that the PW mark is transmitted, and stamps the stale mark);
Step 503: start and rebuild timer, begin rebuliding of signaling session this moment, the timing value of rebuilding timer provides by steadily restarting negotiation module 201, and the main effect of this timer is to limit the time that the signaling session rebulids;
Step 504: whether decision node is S-PE, and whether reset node for the S-PE node has different operations, can learn whether be the S-PE node from steadily restarting negotiation module 201 for.If the S-PE node, then next step changes step 505 over to, otherwise changes step 506 over to;
Step 505: judge whether signaling session foundation is successful, if before rebuilding timer expiry, detect session from signaling session management module 103 and set up successfully, then next step changes step 509 over to, otherwise changes step 512 over to;
Step 506: whether the signaling session of judgement and whole adjacent PE all rebuilds successfully, if before rebuilding timer expiry, detect session from signaling session management module 103 and set up successfully, then next step changes step 509 over to, otherwise changes step 507 over to;
Step 507: whether the signaling session of judgement and the adjacent PE of part all rebuilds successfully, if before rebuilding timer expiry, detect session from signaling session management module 103 and set up successfully, then next step changes step 508 over to, otherwise changes step 512 over to;
Step 508: an end of setting up successfully to session sends message, removes corresponding PW.Because PW is made up of bidirectional LSP, PE need cancel local distributed labels (promptly going into label) to far-end by sending Withdraw message; Send Release message and discharge far-end PE distributed labels (being outgoing label), remove all corresponding PW to far-end;
Step 509: start and recover timer, the timing value that recovers timer provides by steadily restarting negotiation module 201, and the main effect of this timer is to limit the time that PW recovers;
Step 510: recover the relevant PW mark of session and transmit item.Reset node PE is by sending the PW label mapping message to auxiliary node, and receive the PW label mapping message that sends from auxiliary node, carry out the binding of local label (being that data are gone into label) and the far-end label (being the data outgoing label) of PW, and remove the stale mark that this PW mark is transmitted item; By sending message, make it delete the stale mark of corresponding PW simultaneously to forwarding information administration module 110;
Step 511: judge whether the recovery timer is overtime, if timer expiry, then next step changes step 512 over to, otherwise changes step 513 over to;
Step 512: the PW that deletion still has the stale mark transmits item, this moment is owing to recover timer expiry, still the PW mark forwarding item that has the stale mark is the forwarding item that does not recover successful, need delete, while sends message to forwarding information administration module 110, notifies the corresponding PW mark of its deletion to transmit item;
Step 513: steadily restarting process finishes.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (13)
1. a method that is used for steadily restarting under the multi-hop counterfeit wire is characterized in that, comprises as follows:
Steadily restart negotiation step, be used for all supporting steadily to restart function by restarting negotiation affirmation provider edge equipment and adjacent operator edge device;
Two-layer VPN data forwarding step, when described provider edge equipment restart because of the two-layer VPN signaling protocol cause and described adjacent operator edge device between during the signaling conversation, described provider edge equipment keeps the two-layer VPN data forwarding;
The reset node treatment step, described provider edge equipment is set to reset node, enters reset node and handles;
The auxiliary node treatment step, described adjacent operator edge device is set to auxiliary node, enters auxiliary node and handles;
Wherein, described reset node treatment step further comprises: under described reset node is not situation as the provider edge equipment of pseudo-line switching node, if signaling is recovered successfully between described reset node and the whole described auxiliary node, the signaling information before then described reset node recovers to restart; If signaling is recovered successfully between the described auxiliary node of described reset node and part, then described reset node carries out dismantling operation to recovering successful pseudo-line, and deletion has the pseudo-line forwarding message of stale mark; If signaling is recovered failure between described reset node and the whole described auxiliary node, then described reset node deletion has the pseudo-line forwarding information of stale mark.
2. method according to claim 1 is characterized in that, described provider edge equipment is adjacent to be provided with one or more adjacent operator edge devices.
3. method according to claim 1 is characterized in that, describedly steadily restarts negotiation step and comprises the timer negotiation step again.
4. method according to claim 3 is characterized in that, described timer negotiation step comprises again rebuilds the timer negotiation step or recover the timer negotiation step.
5. according to claim 1,2,3 or 4 described methods, it is characterized in that, described auxiliary node treatment step further comprises: if signaling is recovered successfully between described reset node and the described auxiliary node, then described auxiliary node helps the signaling information before described reset node recovers to restart; If signaling is recovered failure between described reset node and the described auxiliary node, the pseudo-line that then described auxiliary node deletion has the stale mark is transmitted message.
6. method according to claim 5, it is characterized in that, the step that described auxiliary node is deleted corresponding pseudo-line forwarding information further comprises: if described auxiliary node is the provider edge equipment as pseudo-line switching node, then described auxiliary node is removed the pseudo-line of its other end automatically.
7. method according to claim 1 is characterized in that, described maintenance two-layer VPN data forwarding step is to realize by the forwarding information in the backup forwarding information administration module.
8. the steady rebooting device of two-layer VPN is used for steadily restarting under the multi-hop counterfeit wire, it is characterized in that, comprising:
One steadily restarts negotiation module, receive signaling session management information and OAM control information, and steadily restart module and auxiliary node to reset node and steadily restart module and send and steadily restart negotiation information, be used for consulting to confirm that by restarting provider edge equipment and adjacent operator edge device all support steadily to restart function;
One described reset node is steadily restarted module, receive the signaling session information and described steadily restart negotiation module steadily restart negotiation information, send forwarding information, and setting up pseudo-line information needed and pseudo-wire tag, to transmit a management information mutual, be used for described provider edge equipment and be set to reset node, carrying out reset node handles, described reset node is steadily restarted module and is carried out reset node and handle and further to comprise: under described reset node is not situation as the provider edge equipment of pseudo-line switching node, if signaling is recovered successfully between described reset node and the whole auxiliary node, the signaling information before then described reset node recovers to restart; If signaling is recovered successfully between the described auxiliary node of described reset node and part, then described reset node carries out dismantling operation to recovering successful pseudo-line, and deletion has the pseudo-line forwarding message of stale mark; If signaling is recovered failure between described reset node and the whole described auxiliary node, then described reset node deletion has the pseudo-line forwarding information of stale mark;
One described auxiliary node is steadily restarted module, receive the signaling session information and described steadily restart negotiation module steadily restart negotiation information, send forwarding information, and setting up pseudo-line information needed and pseudo-wire tag, to transmit a management information mutual, be used for described adjacent operator edge device and be set to auxiliary node, carry out auxiliary node and handle;
Wherein, when described provider edge equipment restart because of the two-layer VPN signaling protocol cause and described adjacent operator edge device between during the signaling conversation, described provider edge equipment keeps the two-layer VPN data forwarding.
9. device according to claim 8 is characterized in that, describedly steadily restarts negotiation module and is used for further providing negotiation steadily to restart the timing parameters of function needs.
10. device according to claim 8 is characterized in that, comprises that also one is used to realize steadily restart the time value of the timer of function, and described timer time value comprises again rebuilds the timer time value and recover the timer time value.
11. a virtual private network in second layer network comprises the signaling protocol module, two-layer VPN protocol module and forwarding information administration module, described two-layer VPN protocol module comprises two-layer VPN agreement total control module, the two-layer VPN initialization module, the OAM control module, pseudo-line PW mark is transmitted an administration module, two-layer VPN is steadily restarted module, the signaling session management module, message management module, VPN and PW database management module, it is characterized in that described two-layer VPN is steadily restarted module and comprised again:
One steadily restarts negotiation module, and the information by receiving the signaling session management module and the configuration information of OAM control module are steadily restarted module and auxiliary node to reset node and steadily restarted module and send negotiation information, the negotiation before being used to restart;
One described reset node is steadily restarted module, receive described information of steadily restarting negotiation module and signaling session management module, send message to described forwarding information administration module, and transmit an administration module with message management module and PW mark and carry out information interaction, being used for reset node keeps data forwarding and carries out the reset node processing when the two-layer VPN agreement is restarted, described reset node is steadily restarted module and is carried out reset node and handle and further to comprise: under described reset node is not situation as the provider edge equipment of pseudo-line switching node, if signaling is recovered successfully between described reset node and the whole auxiliary node, the signaling information before then described reset node recovers to restart; If signaling is recovered successfully between the described auxiliary node of described reset node and part, then described reset node carries out dismantling operation to recovering successful pseudo-line, and deletion has the pseudo-line forwarding message of stale mark; If signaling is recovered failure between described reset node and the whole described auxiliary node, then described reset node deletion has the pseudo-line forwarding information of stale mark;
One described auxiliary node is steadily restarted module, receive described information of steadily restarting negotiation module and signaling session management module, send message to described forwarding information administration module, and transmit an administration module with message management module and PW mark and carry out information interaction, be used for auxiliary node and carry out keeping data forwarding when the two-layer VPN agreement is restarted and carrying out auxiliary node and handle at reset node.
12. network according to claim 11 is characterized in that, comprises that also one is used to realize steadily restarting the timer of function.
13. network according to claim 12 is characterized in that, described timer comprises again to be rebuild timer and recovers timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100891622A CN101123563B (en) | 2006-08-07 | 2006-08-07 | A method, device and network for stable restart of multi-hop counterfeit wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100891622A CN101123563B (en) | 2006-08-07 | 2006-08-07 | A method, device and network for stable restart of multi-hop counterfeit wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101123563A CN101123563A (en) | 2008-02-13 |
| CN101123563B true CN101123563B (en) | 2010-09-08 |
Family
ID=39085746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100891622A Active CN101123563B (en) | 2006-08-07 | 2006-08-07 | A method, device and network for stable restart of multi-hop counterfeit wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101123563B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232430B (en) * | 2008-02-21 | 2011-01-19 | 中兴通讯股份有限公司 | System for two layer VPN steady reset node to obtain inner layer label |
| CN101247306A (en) * | 2008-03-13 | 2008-08-20 | 华为技术有限公司 | Method for edge port block in ethernet ring, ethernet ring system and device |
| CN101860523B (en) | 2009-04-08 | 2015-04-15 | 华为技术有限公司 | Method and device for updating combined bidirectional label exchange path binding relationship |
| CN102238138A (en) * | 2010-04-23 | 2011-11-09 | 中兴通讯股份有限公司 | Pseudo wire service processing method and system |
| CN102223660B (en) * | 2011-08-02 | 2013-10-09 | 华为技术有限公司 | Method and device for controlling switching of active/standby pseudo wires |
| CN102394810A (en) * | 2011-10-14 | 2012-03-28 | 烽火通信科技股份有限公司 | Method for realizing dynamic association between pseudo-wire services and channels in PTN (Packet Transport Network) network |
| CN103517303A (en) * | 2012-06-25 | 2014-01-15 | 中兴通讯股份有限公司 | Microwave transmission apparatus, and data processing method and device for the same |
| CN106411543B (en) * | 2015-07-27 | 2020-06-05 | 中兴通讯股份有限公司 | Method and device for removing multi-segment pseudo wires |
| CN106850247A (en) * | 2017-01-04 | 2017-06-13 | 安徽皖通邮电股份有限公司 | A kind of pseudo-wire control word upgrade method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050089047A1 (en) * | 2003-10-24 | 2005-04-28 | Hamid Ould-Brahim | Refresh and filtering mechanisms for LDP based VPLS and L2VPN solutions |
| US20050147104A1 (en) * | 2003-12-29 | 2005-07-07 | Hamid Ould-Brahim | Apparatus and method for multihop MPLS/IP/ATM/frame relay/ethernet pseudo-wire |
| CN1722726A (en) * | 2004-07-12 | 2006-01-18 | 中兴通讯股份有限公司 | Layer-2 VPN equipment supporting pseudo line tag reflection and networking method |
| CN1801802A (en) * | 2004-12-31 | 2006-07-12 | 华为技术有限公司 | Node restarting method on universal multi protocol label exchange path |
-
2006
- 2006-08-07 CN CN2006100891622A patent/CN101123563B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050089047A1 (en) * | 2003-10-24 | 2005-04-28 | Hamid Ould-Brahim | Refresh and filtering mechanisms for LDP based VPLS and L2VPN solutions |
| US20050147104A1 (en) * | 2003-12-29 | 2005-07-07 | Hamid Ould-Brahim | Apparatus and method for multihop MPLS/IP/ATM/frame relay/ethernet pseudo-wire |
| CN1722726A (en) * | 2004-07-12 | 2006-01-18 | 中兴通讯股份有限公司 | Layer-2 VPN equipment supporting pseudo line tag reflection and networking method |
| CN1801802A (en) * | 2004-12-31 | 2006-07-12 | 华为技术有限公司 | Node restarting method on universal multi protocol label exchange path |
Non-Patent Citations (2)
| Title |
|---|
| M. Leelanivas, etc..Graceful Restart Mechanism for Label Distribution Protocol.RFC3748.2003,第1-2节,第3.1节,第3.3节. * |
| 申晓峰.基于MPLS二层VPN技术的研究与实现.西南交通大学硕士学位论文.2005,32-34. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101123563A (en) | 2008-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101123563B (en) | A method, device and network for stable restart of multi-hop counterfeit wire | |
| CN101257441B (en) | Method, equipment and system for forwarding message as well as equipment for receiving message | |
| EP2242215B1 (en) | Method for client data transmission through a packet switched provider network | |
| CN100512292C (en) | Apparatus and method of real-time recovering service | |
| US8780699B1 (en) | Handling switchover of multi-homed connections in VPLS networks | |
| JP4560576B2 (en) | Multi-segment pseudo wire fault detection method | |
| US8665711B2 (en) | Fast restoration for provider edge node and access link failures | |
| CN101330424B (en) | Method, system and apparatus for processing service fault of virtual special network | |
| CN101345715B (en) | MAC address learning method and system based on VPLS dual-homing network | |
| CN101159690B (en) | Multi-protocol label switch forwarding method, device and label switching path management module | |
| US20120127855A1 (en) | Method and device for conveying traffic | |
| US20020171886A1 (en) | Automatic control plane recovery for agile optical networks | |
| CN104135418B (en) | It is a kind of to realize two layers of method and device for coordinating to switch with Layer3 Virtual Private Network | |
| WO2006081767A1 (en) | A method for implementing master and backup transmission path | |
| CN104956628A (en) | Using Ethernet ring protection switching with computer networks | |
| CN101155076B (en) | Method for checking pseudo wire trouble of two-layer special network | |
| WO2012130034A1 (en) | Vpls fast rerouting method and device | |
| CN103297338B (en) | A kind of VPN route advertising method and equipment | |
| CN102238067B (en) | Switching method and device on Rapid Ring Protection Protocol (RRPP) ring | |
| CN102013990B (en) | End to end notification method and system for multi-segment pseudowire fault | |
| CN103138957A (en) | Method, device and system for business path failback | |
| JP6371399B2 (en) | Interface parameter synchronization method and apparatus | |
| CN103746891A (en) | Ring network access service protection method, device and system thereof | |
| CN103560869B (en) | A kind of VPLS link switching, auxiliary switching device and method | |
| CN106301867B (en) | A kind of static state pseudo-wire condition detection method and device |
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 |