CN101494604B - Migrating method and migrating device for VRF, and VRF distributed communication system - Google Patents
Migrating method and migrating device for VRF, and VRF distributed communication system Download PDFInfo
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- CN101494604B CN101494604B CN200910037580.0A CN200910037580A CN101494604B CN 101494604 B CN101494604 B CN 101494604B CN 200910037580 A CN200910037580 A CN 200910037580A CN 101494604 B CN101494604 B CN 101494604B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
- H04L45/021—Ensuring consistency of routing table updates, e.g. by using epoch numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
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- H04L45/033—Topology update or discovery by updating distance vector protocols
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Abstract
The embodiment of the invention discloses a VRF transferring method, a transferring device and a distributed VRF communication system, wherein, when the requirement of transferring a VRF to a second BGP process is determined, a first BGP process unit is used for marking the VRF as cut out state, reserving VRF routing information and transferring the VRF that is marked as cut out state to the second BGP process unit; the second BGP process unit is used for receiving the VRF that is transferred from the first BGP process unit, realizing elegant VRF restarting and notifying the first BGP process unit to delete the VRF routing information after the elegant restarting is finished; the first BGP process unit receives the notification and then deletes the VRF routing information, thus realizing the VRF transfer between different BGP processes as well as improving system performance and service quality under the situation that businesses are ensured to be uninterrupted.
Description
Technical field
The present invention relates to communication network, relate in particular to a kind of Virtual Private Network route and moving method, moving apparatus and the VRF distributed communication system of transmitting (VirtualPrivate Network Routing and Forwarding, VRF).
Background technology
At present, market has proposed more and more higher requirement to high-end router Virtual Private Network (Virtual Private Network, VPN) performance, is mainly reflected in the requirement to VRF quantity and VPN route quantity.VRF and the VPN route of magnanimity have brought challenge to router, and main manifestations is:
Memory consumption: because the route quantity of single VRF increases, the sum of whole VPN route can be very huge, and this request memory to system is very high;
The processing speed of CPU: a large amount of VRF of configuration in the system, the VPN route of these VRF is processed and is taken very much CPU, causes the consumption of CPU in the system very large.
For the problems referred to above, main solution is: increase CPU quantity and strengthen internal memory at hardware, with the internal memory that solves the monolithic master control borad and the restriction of CPU, be exactly by realizing alleviating internal memory on the monolithic master control borad and the consumption of CPU based on VRF distributed at software.
VRF is distributed to be exactly by a large amount of VRF being distributed to different veneers or process with VPN route, improving the overall performance extended capability of system.As shown in Figure 1, the general structure schematic diagram of the distributed BGP of VRF, VD-BGP are the distributed BGP of VRF, several VRF can be deployed among the VD-BGP, and whole system can be disposed several VD-BGP again.By the VRF of the many examples of private network is distributed to different VD-BGP, realize the expansion of VPN route and VRF instance.
Wherein, VD-BGP (based on the distributed BGP of VRF) major function is:
(1) safeguards the configuration of all VRF of this process;
(2) the VRF cross reference is safeguarded (local intersection, far-end interleaving function, all VRF IRT relationship safeguards of this process);
(3) the VPNv4 message unpacks, and receives global optimum's route (VPNv4 message) that C-BGP sends over, and global optimum's route is crossed to the VRF that all have cross reference, crosses the VRF ingress policer;
(4) change related procedure for RT, carry out translation (update the translates into withdraw) function of message;
(5) from VRF neighbours' ways for education by, cross neighbours' ingress policer;
(6) the optimum route of this VRF is crossed the VRF egress policy, translate into the VPNv4 form and send to center BGP (CBGP);
(7) with the optimum route generating forward list item of this VRF, instruct and transmit;
(8) the optimum route of this VRF is crossed neighbours' egress policy, be distributed to neighbours.
VD-BGP mainly finishes reception, transmission and the cross processing of route, and carries out routing in the VRF.VD-BGP only sends to CBGP with the optimum route of VRF, can make so only to preserve those on the CBGP and may become preferred routing iinformation, has reduced the taking internal memory of CBGP; VD-BGP carries out the filtration of ingress policer and egress policy for VRF and neighbours simultaneously, can reduce CBGP taking CPU.
Wherein, center BGP (CBGP) major function is:
(1) the optimum route of reception VRF is carried out full routing based on RD, selects global optimum's route;
(2) safeguard the cross reference of all VD-BGP;
(3) receive public network VPNv4 route;
(4) receive from the VPNv4 route of each VD-BGP issue.
On function, CBGP has realized the basic function of all BGP, comprises the ingress policer of VRF and egress policy and neighbours' ingress policer and egress policy (neighbours that still can normal configuration BGP on the CBGP).
Because the load of system is relevant with the run mode of system, such as route quantity, vibration, strategy etc. so the load imbalance of some VD-BGP may occur, at this moment just need to move to certain VRF the another one bgp process from a bgp process; According to the development of business, certain bgp process can not have been carried the VRF in this BGP in addition, at this moment needs wherein some VRF is moved in other bgp process, to reduce the load of this bgp process.
The inventor finds in realizing process of the present invention, prior art uses an order to make VRF move to another one BGP from a BGP, do not need repeated configuration, but need the flow process of deletion VRF or deletion peer to process, cause losing of forwarding information, cause the normal business of impact in the process of migration.
Summary of the invention
Embodiments of the invention have proposed moving method, moving apparatus and the VRF distributed communication system of VRF in a kind of Virtual Private Network, are guaranteeing to have realized the migration of VRF between different B GP process in professional unbroken situation.
In the one side of embodiments of the invention, the moving method of a kind of VRF is provided, comprising:
When determining a VRF to be moved to the second bgp process from the first Border Gateway Protocol bgp process, described the first bgp process is labeled as the state of cutting out with described VRF, and keeps the routing iinformation of described VRF;
The VRF that described the first bgp process will be labeled as the state of cutting out moves to described the second bgp process;
A described BGP receives that described the second bgp process is finished the notice of Graceful Restart or after described the second bgp process is finished Graceful Restart, when described the first bgp process receives the deletion notice of routing iinformation of the described VRF that is labeled as the state of cutting out of deletion, delete the described routing iinformation that is labeled as the VRF of the state of cutting out.
In the embodiment of the invention on the other hand, provide the moving method of a kind of VRF, having comprised:
The second bgp process receives the VRF that comes from the migration of the first bgp process, and this VRF is carried out Graceful Restart;
After Graceful Restart was finished, described the second bgp process was notified described the first bgp process Graceful Restart to finish or is notified described the first bgp process to delete the routing iinformation of described VRF.
Accordingly, in the one side of embodiments of the invention, provide the moving apparatus of a kind of VRF, having comprised:
Mark module is used for when determining VRF to be moved to the second bgp process from the first Border Gateway Protocol bgp process described VRF being labeled as the state of cutting out;
Transferring module moves to described the second bgp process for the VRF that described mark module is labeled as the state of cutting out;
Removing module is used for deleting the described routing iinformation that is labeled as the VRF of the state of cutting out after the first bgp process receives described the second bgp process Graceful Restart and finishes notice.
In the embodiment of the invention on the other hand, provide the moving apparatus of a kind of VRF, having comprised:
Receiver module is used for receiving the VRF that comes from the migration of the first bgp process, and this VRF is carried out Graceful Restart;
Notification module is used for notifying described the first bgp process to delete the routing iinformation of described VRF after the Graceful Restart of described receiver module is finished.
Correspondingly, embodiments of the invention also provide a kind of VRF distributed communication system, comprising:
The first bgp process unit when determining one VRF to be moved to the second bgp process, is used for described VRF is labeled as the state of cutting out, and keeps the routing iinformation of described VRF, and the VRF that is labeled as the state of cutting out is moved to the second bgp process unit;
Described the second bgp process unit, be used for receiving the VRF that comes from the migration of the first bgp process unit, this VRF is carried out Graceful Restart, after Graceful Restart is finished, notify described the first bgp process unit Graceful Restart to finish or notify the routing iinformation of the described VRF of described the first bgp process element deletion;
After described the first bgp process unit receives described notice, delete the routing iinformation of described VRF.
By implementing specific embodiments of the invention, the first bgp process of VRF of moving out keeps all configuration informations of this VRF, and after receiving described VRF, the second bgp process enables the Graceful Restart ability to all neighbours of this VRF, to guarantee that opposite equip. is during the second bgp process is carried out Graceful Restart to this VRF, after neighbours' disconnection, the forwarding-table item that can keep these neighbours, assured forwarding does not interrupt (being that business is not interrupted), and after Graceful Restart is complete, notifies described the first bgp process to delete the relevant information of described VRF, thereby in transition process, the first bgp process can be commenced business by VRF, and the second bgp process Graceful Restart uses this VRF to commence business, at this moment, the first bgp process is just deleted VRF, the business that guaranteed in the whole transition process is not interrupted, and improves systematic function, has improved simultaneously service quality.
Description of drawings
Fig. 1 is the general structure schematic diagram of the distributed BGP of existing VRF;
Fig. 2 is the flow chart of the moving method of a kind of VRF of providing of embodiments of the invention;
Fig. 3 is the flow chart of the moving method of a kind of VRF of providing of embodiments of the invention;
Fig. 4 is the first preferred embodiment of the moving method of a kind of VRF of the present invention;
Fig. 5 is the second preferred embodiment of the moving method of a kind of VRF of the present invention;
Fig. 6 is the 3rd preferred embodiment of the moving method of a kind of VRF of the present invention;
Fig. 7 is the schematic diagram of the moving apparatus of a kind of VRF of the present invention;
Fig. 8 is the schematic diagram of the moving apparatus of a kind of VRF of the present invention;
Fig. 9 is the structural representation intention of a kind of VRF distributed communication system of providing of embodiments of the invention;
Figure 10 is the structural representation intention of a kind of VRF distributed communication system of providing of embodiments of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make embodiments of the invention is clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
With reference to figure 2, illustrate the flow chart of the moving method of a kind of VRF that embodiments of the invention provide.According to Fig. 2 as can be known, the moving method of a kind of VRF comprises:
S001, when determining a VRF to be moved to the second bgp process from the first bgp process, described the first bgp process is labeled as the state of cutting out with described VRF, and keeps the routing iinformation of described VRF;
In this example, can move described VRF, the order line of VRF dynamic migration by configuration VRF dynamic migration command triggers the first bgp process:
shift?vpn-instance?vpn-instance-name?distributed-index?number
Wherein, vpn-instance-name: the vpn-instance name that move
Number: the distributed index number that receives the purpose bgp process (this example is the second bgp process) of migration vrf.
In another execution mode of the embodiment of the invention, the load that can automatically be detected by the system of the described bgp process of operation each bgp process (for example takies the CPU time, neighbours' number etc.), in case find that the load of certain bgp process (such as the first bgp process in this example) is larger, then automatically trigger from this bgp process, a VRF is moved in the another one bgp process.
S002, the VRF that the first bgp process will be labeled as the state of cutting out moves to described the second bgp process;
S003, a BGP receive described the second bgp process Graceful Restart finish notice after, delete the described routing iinformation that is labeled as the VRF of the state of cutting out, particularly, delete the entrance routing table of bgp neighbor corresponding to all Peer of described VRF and described Peer.
The above-mentioned concrete handling process of having set forth the bgp process of the VRF that need to move out specifies below in conjunction with Fig. 3, receives the processing method of the bgp process of described VRF.
With reference to figure 3, illustrate the flow chart of the moving method of a kind of VRF that embodiments of the invention provide, comprising:
S100, the second bgp process receives the VRF that comes from the migration of the first bgp process;
S200, the second bgp process is carried out Graceful Restart (Graceful Restart, GR) to this VRF; Can be so that neighbor device during the second bgp process is to this VRF Graceful Restart, still keep forwarding-table item by the GR technology, assured forwarding does not interrupt.
S300, after Graceful Restart was finished, the second bgp process notified described the first bgp process to delete the routing iinformation of described VRF, as: all Peer of VRF and as described in the entrance routing table of bgp neighbor corresponding to Peer.
By above-described embodiment as can be known, embodiments of the invention keep all configuration informations of this VRF by the first bgp process of the VRF that moves out, and carry out Graceful Restart in the second bgp process that receives described VRF, and after Graceful Restart is complete, notify described the first bgp process to delete the relevant information of described VRF, thereby in transition process, the first bgp process can be commenced business by VRF, the second bgp process Graceful Restart uses this VRF to commence business, at this moment, the first bgp process is just deleted VRF, and the business that guaranteed in the whole transition process is not interrupted, improve systematic function, improved simultaneously service quality.
For those skilled in the art being understood and realizing the technical scheme of embodiments of the invention, following three preferred embodiments are proposed, elaborate the moving method of a kind of VRF of embodiments of the invention.
The first preferred embodiment: VRF carries out dynamic migration between different VD-BGP
In this example, the first above-mentioned bgp process is a VD-BGP process, and the second bgp process is the 2nd VD-BGP process, and as shown in Figure 4, the moving method of described VRF comprises:
401, use the order of a VRF dynamic migration with all configuration informations of VRF on a VD-BGP process migration to the two VD-BGP processes, it is excessive that perhaps system detects the load of a described VD-BGP process, automatically with this VRF from a VD-BGP process migration to the VD-BGP process; And in a VD-BGP process, will need the VRF that moves to be labeled as the state of cutting out, keep all routing iinformations of VRF.
Wherein, the order line of described VRF dynamic migration:
shift?vpn-instance?vpn-instance-name?distributed-index?number
Wherein, vpn-instance-name: the vpn-instance name that move
Number: the distributed index number that receives the purpose bgp process (this example is the 2nd VD-BGP process) of migration vrf.
402, this VRF is moved to or is re-deployed on the 2nd VD-BGP process, with neighbours' opening relationships.
403, the two VD-BGP processes are carried out GR to this VRF.
404-405, VRF is restarted on CBGP process perception the 2nd VD-BGP process, keeps all routing iinformations of this VRF, after knowing that the GR of the 2nd VD-BGP process to this VRF finishes, carries out routing according to described VRF.
406, after the routing of CBGP process is complete, notify a VD-BGP to delete described VRF.
After 407, the one VD-BGP receive the notice of described CBGP process, delete all Peer of this VRF, delete the entrance routing table (Adj-RIB-IN) of the bgp neighbor of each Peer.
The present embodiment and following be in the example, described Adj-RIB-IN is: BGP can form a peer tree for each VRF, form an Adj-RIB-IN for each neighbour again, be used for depositing the routing iinformation of receiving from these neighbours, described routing iinformation is not through routing.
The second preferred embodiment: VRF is from the VD-BGP dynamic migration to CBGP
In this example, the first above-mentioned bgp process is the VD-BGP process, and the second bgp process is the CBGP process, and as shown in Figure 5, the moving method of described VRF comprises:
501, use the order of a VRF dynamic migration with all configuration informations of VRF from the VD-BGP process migration on the CBGP process, it is excessive that perhaps system detects the load of described VD-BGP process, automatically with this VRF from the VD-BGP process migration to the CBGP process; And in the VD-BGP process, will need the VRF that moves to be labeled as the state of cutting out, keep all routing iinformations of VRF.
Wherein, the order line of described VRF dynamic migration:
shift?vpn-instance?vpn-instance-name?distributed-index?number
Wherein, vpn-instance-name: the vpn-instance name that move
Number: the distributed index number that receives the purpose bgp process (this example is the CBGP process) of migration vrf.
502, this VRF is moved to or is re-deployed on the CBGP process, with neighbours' opening relationships.
503, CBGP process is carried out GR to this VRF, still keeps all routing iinformations of this VRF on the CBGP.
After 504, CBGP process is finished the GR of this VRF, the routing iinformation of the described VRF of notice VD-BGP process-kill.
505, VD-BGP process begins to delete all Peer of this VRF, deletes the Adj-RIB-IN route of each Peer.
The 3rd preferred embodiment: VRF is from the CBGP dynamic migration to VD-BGP
In this example, the first above-mentioned bgp process is the CBGP process, and the second bgp process is the VD-BGP process, and as shown in Figure 6, the moving method of described VRF comprises:
601, use the order of VRF dynamic migration with all configuration informations of VRF from the CBGP process migration on the VD-BGP process, it is excessive that perhaps system detects the load of described CBGP process, automatically with this VRF from the CBGP process migration to the VD-BGP process; And in the CBGP process, will need the VRF that moves to be labeled as the state of cutting out, keep all routing iinformations of VRF.
Wherein, the order line of described VRF dynamic migration:
shift?Vpn-instance?vpn-instance-name?distributed-index?number
Wherein, vpn-instance-name: the vpn-instance name that move
Number: the distributed index number that receives the purpose bgp process (this example is the VD-BGP process) of migration vrf.
602, this VRF is moved to or is re-deployed on the VD-BGP process, with neighbours' opening relationships.
603, VD-BGP process is carried out GR to this VRF.
After 604, VD-BGP process is finished the GR of this VRF, notice CBGP.
605, CBGP process is carried out renewal and the burin-in process of route, thereby guarantees the change in topology that response is new.
All Peer of this VRF of 606, CBGP process-kill, the Adj-RIB-IN route of deleting each Peer.
According to embodiments of the invention, VRF can be between bgp process dynamic migration, need not manual intervention, full intellectualized, also can the migration of utility command configure trigger; In the dynamic migration process, still can keep forwarding-table item, accomplish uninterrupted forwarding; The routing iinformation that changes in the transition process can be refreshed behind the dynamic migration.
Based on the moving method of above-mentioned a kind of VRF, corresponding, the embodiment of the invention also provides the moving apparatus of VRF, is the schematic diagram of the moving apparatus of a kind of VRF of providing of embodiments of the invention as shown in Figure 7, and device comprises:
Transferring module 72, the VRF that is used for described mark module 71 is labeled as the state of cutting out moves to described the second bgp process;
Removing module 73 is used for deleting the described routing iinformation that is labeled as the VRF of the state of cutting out after the first bgp process receives described the second bgp process Graceful Restart and finishes notice.
With reference to figure 8, illustrate the schematic diagram of the moving apparatus of a kind of VRF that embodiments of the invention provide.According to Fig. 8 as can be known, the moving apparatus of a kind of VRF comprises:
Embodiments of the invention keep all configuration informations of this VRF by the first bgp process of the VRF that moves out, and carry out Graceful Restart in the second bgp process that receives described VRF, and after Graceful Restart is complete, notify described the first bgp process to delete the relevant information of described VRF, thereby in transition process, the first bgp process can be commenced business by VRF, the second bgp process Graceful Restart uses this VRF to commence business, at this moment, the first bgp process is just deleted VRF, the business that guaranteed in the whole transition process is not interrupted, and improves systematic function, has improved simultaneously service quality.
Based on the moving method of above-mentioned a kind of VRF, need to carry out inventive function to a kind of VRF distributed communication system and strengthen, as shown in Figure 9, described VRF distributed communication system comprises:
The first bgp process unit 7100 when determining one VRF to be moved to the second bgp process, is used for described VRF is labeled as the state of cutting out, and keeps the routing iinformation of described VRF, and the VRF that is labeled as the state of cutting out is moved to the second bgp process unit 7200;
Described the second bgp process unit 7200, be used for receiving the VRF that comes from 7100 migrations of the first bgp process unit, this VRF is carried out Graceful Restart, after Graceful Restart is finished, notify described the first bgp process unit 7100 Graceful Restart to finish or notify the Peer of the described VRF of described the first bgp process element deletion and the described Peer entrance routing table of corresponding bgp neighbor; Particularly, before the entrance routing table of bgp neighbor corresponding to the Peer that notifies the described VRF of described the first bgp process unit 7100 deletion and described Peer, described the second bgp process unit 7200 notifies the preferred route of VRF to center BGP, and center BGP carries out the renewal of route to this VRF and wears out.
After described the first bgp process unit 7100 receives described notice, delete the entrance routing table of bgp neighbor corresponding to the Peer of described VRF and described Peer.
Wherein, when described the first bgp process unit 7100 is distributed bgp process unit, during the bgp process unit, described the second bgp process unit 7200 also is used for keeping the routing iinformation of described VRF centered by the second bgp process unit 7200, and carries out routing according to described routing iinformation.
Bgp process unit centered by described the first bgp process unit 7100, when the second bgp process unit 7200 is distributed bgp process unit, described the first bgp process unit 7100 also is used for before the entrance routing table of bgp neighbor corresponding to the Peer of the described VRF that is labeled as the state of cutting out of deletion and described Peer route being upgraded and burin-in process.
In another execution mode of the embodiment of the invention, as shown in figure 10, when described the first bgp process unit of Fig. 9 can be the first distributed bgp process unit 8100, when described the second bgp process unit can be for the second distributed bgp process unit 8200, described system also comprised:
Bgp process unit, center 8300, be used for after the described second distributed bgp process unit 8200 Graceful Restart are finished, the routing iinformation that keeps described VRF, carry out routing according to described routing iinformation, and after routing is finished, notify the Peer of the described VRF of the described first distributed bgp process unit 8100 deletion and the described Peer entrance routing table of corresponding bgp neighbor.
Need to prove, it should be appreciated by those skilled in the art, because professional development is dynamic, the triggering of the VRF transition process in the embodiment of the invention can be manual configuration, the load that also can system automatically detects each bgp process (for example takies the CPU time, neighbours' number, etc.), in case find that the load of certain bgp process is larger, then automatically trigger from this bgp process, some VRF are moved in the another one bgp process, and transition process is not subjected to the limitation of hardware device, can occur between each bgp process on the physical equipment plate, also can occur on two blocks of physical equipment plates.
Wherein, manual configuration adopts the order of VRF dynamic migration, its order line:
shift?vpn-instance?vpn-instance-name?distributed-index?number
Wherein, vpn-instance-name: the vpn-instance name that move
Number: the distributed index number that receives the purpose bgp process of migration vrf.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware.Based on such understanding, technical scheme of the present invention is to can embodying with the form of software product in whole or in part that background technology contributes, this computer software product can be stored in the storage medium, such as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
By implementing specific embodiments of the invention, the first bgp process of VRF of moving out keeps all configuration informations of this VRF, and carry out Graceful Restart in the second bgp process that receives described VRF, and after Graceful Restart is complete, notify described the first bgp process to delete the relevant information of described VRF, thus VRF can be between bgp process dynamic migration, need not manual intervention, full intellectualized, also can the utility command configure trigger move; In the dynamic migration process, still can keep forwarding-table item, accomplish uninterrupted forwarding; The routing iinformation that changes in the transition process can be refreshed behind the dynamic migration, improve systematic function, improved simultaneously service quality.
Above disclosed is a kind of preferred embodiment of the present invention only, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (10)
1. a Virtual Private Network route and transmit the moving method of VRF is characterized in that, comprising:
When determining VRF to be moved to the second bgp process from the first Border Gateway Protocol bgp process, described the first bgp process is labeled as the state of cutting out with described VRF;
The VRF that described the first bgp process will be labeled as the state of cutting out moves to described the second bgp process;
Described the first bgp process receives that described the second bgp process is finished the notice of Graceful Restart or after described the second bgp process is finished Graceful Restart, when described the first bgp process receives the deletion notice of routing iinformation of the described VRF that is labeled as the state of cutting out of deletion, delete the described routing iinformation that is labeled as the VRF of the state of cutting out.
2. method according to claim 1, it is characterized in that, after described the first bgp process perceives described the second bgp process Graceful Restart and finishes, before the routing iinformation of the described VRF that is labeled as the state of cutting out of deletion, carry out routing update and burin-in process.
3. method according to claim 1 and 2 is characterized in that, determines whether described VRF is moved to the second bgp process from described the first bgp process by configuration order or the system that moves described the first bgp process.
4. a Virtual Private Network route and transmit the moving method of VRF is characterized in that, comprising:
The second boundary gateway protocol bgp process receives the VRF that comes from the migration of the first bgp process, and this VRF is carried out Graceful Restart;
After Graceful Restart was finished, described the second bgp process was notified described the first bgp process Graceful Restart to finish or is notified described the first bgp process to delete the routing iinformation of described VRF.
5. method according to claim 4, it is characterized in that, when described the second bgp process is the second distributed bgp process, when described the first bgp process was the first distributed bgp process, the routing iinformation that described the second bgp process notifies described the first bgp process to delete described VRF was specially:
Described the second bgp process notice center bgp process keeps the routing iinformation of described VRF, and carries out routing according to described routing iinformation;
After the bgp process routing of described center is finished, notify described the first bgp process to delete the routing iinformation of described VRF by described center BGP.
6. method according to claim 4 is characterized in that, bgp process centered by described the second bgp process, and when described the first bgp process is distributed bgp process,
After Graceful Restart is finished, notify described the first bgp process to delete before the routing iinformation of described VRF, described method also comprises:
Described the second bgp process keeps the routing iinformation of described VRF, and carries out routing according to described routing iinformation, after routing is finished, carries out and notifies described the first bgp process to delete the step of the routing iinformation of described VRF.
7. a Virtual Private Network route and transmit the VRF distributed communication system is characterized in that, comprising:
The first Border Gateway Protocol bgp process unit, when determining one VRF to be moved to the second bgp process, be used for described VRF is labeled as the state of cutting out, and keep the routing iinformation of described VRF, the VRF that is labeled as the state of cutting out is moved to the second bgp process unit;
Described the second bgp process unit, be used for receiving the VRF that comes from the migration of the first bgp process unit, this VRF is carried out Graceful Restart, after Graceful Restart is finished, notify described the first bgp process unit Graceful Restart to finish or notify the routing iinformation of the described VRF of described the first bgp process element deletion;
After described the first bgp process unit receives described notice, delete the routing iinformation of described VRF.
8. system according to claim 7 is characterized in that, when described the first bgp process unit is the first distributed bgp process unit, when described the second bgp process unit was the second distributed bgp process unit, described system also comprised:
Bgp process unit, center is used for keeping the routing iinformation of described VRF after described the second bgp process unit Graceful Restart is finished, and carries out routing according to described routing iinformation.
9. system according to claim 7, it is characterized in that, when described the first bgp process unit is distributed bgp process unit, centered by the second bgp process unit during the bgp process unit, described the second bgp process unit also is used for keeping the routing iinformation of described VRF, and carries out routing according to described routing iinformation.
10. system according to claim 7, it is characterized in that, bgp process unit centered by described the first bgp process unit, when the second bgp process unit is distributed bgp process unit, described the first bgp process unit also is used for before the routing iinformation of the described VRF that is labeled as the state of cutting out of deletion route being upgraded and burin-in process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910037580.0A CN101494604B (en) | 2009-03-04 | 2009-03-04 | Migrating method and migrating device for VRF, and VRF distributed communication system |
| PCT/CN2010/070858 WO2010099749A1 (en) | 2009-03-04 | 2010-03-03 | Method and apparatus for transferring virtual routing and forwarding (vrf), and vrf distributed communication system |
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| CN200910037580.0A CN101494604B (en) | 2009-03-04 | 2009-03-04 | Migrating method and migrating device for VRF, and VRF distributed communication system |
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| CN101494604B true CN101494604B (en) | 2013-01-02 |
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| CN101494604B (en) * | 2009-03-04 | 2013-01-02 | 华为技术有限公司 | Migrating method and migrating device for VRF, and VRF distributed communication system |
| CN101997757B (en) * | 2009-08-19 | 2012-10-17 | 华为技术有限公司 | Method, equipment and system for transferring routing information |
| CN110971516B (en) * | 2019-10-25 | 2021-01-15 | 华为技术有限公司 | Method and device for processing routing information |
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| KR100542341B1 (en) * | 2003-02-19 | 2006-01-10 | 삼성전자주식회사 | Apparatus for distributively processing BGP protocol and method thereof |
| CN100442767C (en) * | 2005-08-22 | 2008-12-10 | 广东省电信有限公司研究院 | Method for stable restart of router realizing fast route convergence |
| CN1980224A (en) * | 2005-12-01 | 2007-06-13 | 华为技术有限公司 | Method and system for recovering business after apparatus state switching-over based on main and spare netgate |
| CN101364927A (en) * | 2008-09-24 | 2009-02-11 | 华为技术有限公司 | Method, apparatus and system realizing fault recovery of virtual private network |
| CN101494604B (en) * | 2009-03-04 | 2013-01-02 | 华为技术有限公司 | Migrating method and migrating device for VRF, and VRF distributed communication system |
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