CN101997757B - Method, equipment and system for transferring routing information - Google Patents
Method, equipment and system for transferring routing information Download PDFInfo
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- CN101997757B CN101997757B CN200910109477A CN200910109477A CN101997757B CN 101997757 B CN101997757 B CN 101997757B CN 200910109477 A CN200910109477 A CN 200910109477A CN 200910109477 A CN200910109477 A CN 200910109477A CN 101997757 B CN101997757 B CN 101997757B
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Abstract
The invention discloses a method and equipment for transferring routing information, which belong to the field of communication networks. The method comprises: changing the association relationship between a route distinguisher (RD) to be transferred and a first border gateway protocol (BGP) process into the association relationship between the RD to be transferred and a second BGP process; after the change is accomplished, performing the graceful restart of the BGP process of neighbor equipment; receiving routing information which contains the RD to be transferred and sent by the neighbor equipment after the graceful restart of the BGP process; and forwarding the received routing information which contains the RD to be transferred to the second BGP process. In the process of transferring routing information, the continuous service forwarding is guaranteed.
Description
Technical field
The present invention relates to communication network field, particularly a kind of method, equipment and system that moves routing iinformation.
Background technology
In VPN (Virtual Private Network, VPN), realize that through RD (RouteDistinguisher, Route Distinguisher) address space is independent.Current vpn service development is swift and violent, and market has proposed increasingly high requirement to high-end router VPN performance, is mainly reflected in the requirement to VRF (VirtualRouting Forwarding, route forwarding table) quantity and VPN route quantity.And along with the increase of VRF quantity, when the VPN route increases; Be responsible for handling BGP (the Border GatewayProtocol of these VPN routes; Border Gateway Protocol) the process burden can be very heavy, just need the VPN route be separated from a bgp process, moves in other bgp process and go; Thereby alleviate the load of this bgp process, improved extensibility.
The method that two kinds of migration VPN routes are arranged in the prior art:
First method can load is heavier the VPN route of bgp process move to the lighter bgp process of other loads.This method is deleted from the bgp process of source earlier for the VPN route that comprises RD that will move, reconfigures then, is deployed to the lighter bgp process of other loads.
Second method use the VPN route that comprises RD that an interdictum duplex will move from the source bgp process move to the purpose bgp process.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Utilize first method when migration VPN route, need the VPN route of deletion bgp process, and then reconfigure; Do like this and can cause losing of forwarding information; In transition process, influence normal business, and need do the configuration of repetition, increased user configured workload;
Utilize second method in the process of migration, still need delete the route of source bgp process, cause losing of forwarding information, in the process of migration, influence regular traffic.
Summary of the invention
In the process that makes the migration routing iinformation, the business of assurance is transmitted and is not interrupted, and the embodiment of the invention provides the method and apparatus of migration routing iinformation.Said technical scheme is following:
A kind of method of moving routing iinformation; Move to second bgp process when handling when the routing iinformation of the Route Distinguisher RD that comprises needs migration that need the first Border Gateway Protocol (BGP) process be handled, this method comprises: the incidence relation of RD that will move and said first bgp process is revised as the RD that needs move and the incidence relation of said second bgp process; Bgp process to neighbor device enables the Graceful Restart ability; The routing iinformation of the RD that comprises the needs migration that the reception neighbor device sends behind its bgp process Graceful Restart; The routing iinformation of the RD that comprises the needs migration that receives is transmitted to said second bgp process.
A kind of equipment that moves routing iinformation; Comprise: modified module; Be used for moving to second bgp process when handling, the incidence relation of the RD of needs migration and first bgp process is revised as the RD that need move and the incidence relation of second bgp process when the routing iinformation of the Route Distinguisher RD that comprises needs migration that need the first Border Gateway Protocol (BGP) process be handled; The Graceful Restart module is used for the bgp process of neighbor device is enabled the Graceful Restart ability; Receiver module is used to receive the routing iinformation of the RD that comprises the needs migration that neighbor device sends behind its bgp process Graceful Restart; Forwarding module is used for the routing iinformation of the RD that comprises the needs migration that receives is transmitted to second bgp process.
A kind of system that moves routing iinformation comprises: local terminal equipment reaches the neighbor device with local terminal equipment interactive information; When the routing iinformation of the RD that comprises needs migration that need first bgp process of local terminal equipment be handled is moved to second bgp process when handling, the incidence relation of the RD that local terminal equipment will move and first bgp process is revised as the RD that need move and the incidence relation of second bgp process; Local terminal equipment enables the Graceful Restart ability to the bgp process of neighbor device; Neighbor device sends the routing iinformation of the RD that comprises the needs migration to local terminal equipment behind its bgp process Graceful Restart; The routing iinformation of the RD that comprises the needs migration that local terminal equipment will receive is transmitted to second bgp process.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
The embodiment of the invention is through moving to the process of second bgp process from first bgp process at the routing iinformation of the RD that will comprise the needs migration; Still handle the routing iinformation of the RD that comprises needs migrations in first bgp process, can continue control transmit layer normal transmit professional, after migration finishes; Just the routing iinformation of the RD that comprises the needs migration in first bgp process is deleted; Thereby, guaranteed that professional forwarding of assurance do not interrupted in the process of migration, in addition; Need not reconfigure the routing iinformation that comprises the needs migration, so reduced user configured workload to second bgp process.
Description of drawings
Fig. 1 is the flow chart of the method for the migration routing iinformation that provides of the embodiment of the invention one;
Fig. 2 is the structural representation of local terminal equipment before the embodiment of the invention migration;
Fig. 3 is the flow chart of the method for the migration routing iinformation that provides of the embodiment of the invention two;
Fig. 4 is the structural representation of embodiment of the invention migration back local terminal equipment;
Fig. 5 is the structural representation of the equipment of the migration routing iinformation that provides of the embodiment of the invention three.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment one
As shown in Figure 1, the embodiment of the invention provides a kind of method of moving routing iinformation, comprising:
When the routing iinformation of the Route Distinguisher RD that comprises needs migration that need the first Border Gateway Protocol (BGP) process be handled is moved to the processing of second bgp process, carry out following step:
101: the incidence relation of the RD that will move and first bgp process is revised as the RD of needs migration and the incidence relation of second bgp process;
102: the bgp process to neighbor device enables Graceful Restart;
103: the routing iinformation of the RD that comprises the needs migration that the reception neighbor device sends behind its bgp process Graceful Restart;
104: the routing iinformation of the RD that comprises the needs migration that will receive is transmitted to second bgp process;
105: after the routing iinformation that will comprise the RD of needs migrations is moved to second bgp process, this routing iinformation deletion that first bgp process is handled.
In embodiments of the present invention, give an example, so in other possible execution modes, be not limited thereto, can have at least two bgp process to exist with first bgp process and second bgp process.
In embodiments of the present invention, the triggering of transition process can be through detecting the load of each bgp process, for example VPN route quantity, take the time of CPU etc., also can the configure trigger order.
Embodiment two
As shown in Figure 2, an application scenarios of the method for the migration routing iinformation that the embodiment of the invention provides.Local terminal equipment and neighbor device (not shown) interactive information.Preserve the incidence relation information of first bgp process, second bgp process and RD and bgp process on the local terminal equipment.Wherein, first bgp process of local terminal equipment logically links to each other with the bgp process Peer1 of neighbor device, and second bgp process of local terminal equipment logically links to each other with the bgp process Peer2 of neighbor device.
In the present embodiment; Preserve the incidence relation information of first bgp process, second bgp process and RD and bgp process on the local terminal equipment; This incidence relation information be different RD respectively with first bgp process or the corresponding information of second bgp process; As shown in table 1, first bgp process of local terminal equipment is handled VPN route that comprises RD100:1 and the VPN route that comprises RD200:1; Second bgp process of local terminal equipment is handled the VPN route that comprises RD300:1.
| RD100：1 | First bgp process |
| RD200：1 | First bgp process |
| RD300：1 | Second bgp process |
Table 1
The implication of table 1 representes, when local terminal equipment receives the VPN route of the VPN route that comprises RD100:1 and RD200:1, will be forwarded to first bgp process and handle; When local terminal equipment receives the VPN route that comprises RD300:1, will be forwarded to second bgp process and handle.
In addition, can also comprise the incidence relation between the bgp process of RD and neighbor device at local terminal equipment, as shown in table 2:
| RD100：1 | Peer1 |
| RD200：1 | Peer2 |
| RD300：1 | Peer2 |
Table 2
Use application scenarios as shown in Figure 2, the method for the migration routing iinformation that the embodiment of the invention provides, as shown in Figure 3, comprising:
301: when local terminal equipment need be moved to the processing of second bgp process with the VPN route that comprises RD100:1 that first bgp process is handled, the VPN route that comprises RD100:1 that first bgp process is handled was set to the state of cutting out;
Wherein, the mode that the VPN route that comprises RD100:1 that triggering local terminal equipment is handled first bgp process is moved to second bgp process can adopt first triggering mode and/or second triggering mode, wherein:
First triggering mode: the VPN route that the local terminal Equipment Inspection is handled to first bgp process outnumber preset threshold value; For example; The VPN number of routes that first bgp process is handled surpasses preset threshold value 5, chooses the second lighter bgp process of load and handles the VPN route that comprises RD100:1.
Second triggering mode: the VPN route that comprises RD100:1 that configure trigger order, this trigger command are used to indicate local terminal equipment that first bgp process is handled is moved to second bgp process and is handled.After local terminal equipment received this trigger command, according to this trigger command, the VPN route that comprises RD100:1 that first bgp process is handled was moved in second bgp process and is handled.
Wherein, In an embodiment; Trigger command can be expressed as: " shift route-distinguisherroute-distinguisher-value distributed-index number ", and wherein, route-distinguisher representes Route Distinguisher RD; Route-distinguisher-value representes the value of the RD of needs migrations, and distributed-indexnumber representes to receive the bgp process of the RD that needs move.Application scenarios for example shown in Figure 2, the route-distinguisher route-distinguisher-value in this trigger command is RD100:1, distributed-index number is second bgp process.
302: need the RD of migration and the incidence relation information of bgp process in the modification local terminal equipment;
Particularly; Incidence relation between the RD100:1 and first bgp process in the incidence relation information of RD and bgp process is revised as the incidence relation between the RD100:1 and second bgp process; Promptly when local terminal equipment receives the VPN route that comprises RD100:1, will be forwarded to second bgp process and handle.Wherein, In the process of revising the incidence relation between the RD100:1 and first bgp process, second bgp process; If local terminal equipment receives the VPN route that comprises RD100:1, in the time of need from the incidence relation information of RD and bgp process, inquiring the bgp process of the VPN route that comprises RD100:1, local terminal equipment does not respond inquiry; After revising end, again with new incidence relation response inquiry.
In the present embodiment, amended new RD and bgp process concern relation information, as shown in table 3:
| RD100：1 | Second bgp process |
| RD200：1 | First bgp process |
| RD300：1 | Second bgp process |
Table 3
303: local terminal equipment carries out GR (GracefulRestart, Graceful Restart) to the bgp process of neighbor device after accomplishing modification process.
The mode of the bgp process of neighbor device being carried out Graceful Restart has two kinds, comprising:
First kind of mode: the bgp process to all neighbor devices is carried out Graceful Restart.
Particularly, the bgp process of all neighbor devices is enabled the GR ability, each neighbor device sends the VPN route that comprises RD to local terminal equipment behind its bgp process Graceful Restart.In the present embodiment, the bgp process Peer1 of neighbor device and the bgp process Peer2 of neighbor device are carried out Graceful Restart, neighbor device sends the VPN route that comprises RD100:1 to local terminal equipment after its bgp process Peer1 carries out Graceful Restart; Neighbor device sends VPN route that comprises RD200:1 and the VPN route that comprises RD300:1 to local terminal equipment after its bgp process Peer2 carries out Graceful Restart.
The second way: the bgp process of neighbor device that processing is comprised the VPN route of RD100:1 is carried out Graceful Restart.
Particularly; Local terminal equipment is index with RD100:1; Find out the bgp process of the related neighbor device of RD100:1 the incidence relation between the bgp process of the RD value of prior storage and neighbor device, the bgp process of the neighbor device that finds is enabled the GR ability.For example; Be index in the present embodiment with RD100:1; Find the bgp process Peer1 of neighbor device the incidence relation between the bgp process of RD shown in the table 3 and neighbor device, the bgp process Peer1 of the neighbor device that finds is carried out Graceful Restart, neighbor device is after its bgp process is carried out Graceful Restart; Send the VPN route to local terminal equipment, the VPN route that comprises RD100:1 is arranged in this VPN route.
304: when neighbor device behind its bgp process Graceful Restart; When the transmission of local terminal equipment comprises the VPN route of RD100:1; Local terminal equipment obtains the RD100:1 in the VPN route that comprises RD100:1 of reception; And be that index finds second bgp process of handling the VPN route comprise RD100:1 from the incidence relation information of RD and bgp process with the RD100:1 that obtains, the VPN routing forwarding that will comprise RD100:1 handles for second bgp process that finds.
305: after the VPN route that will comprise RD100:1 was moved to second bgp process, deletion was set to the VPN route that comprises RD100:1 of the state of cutting out from first bgp process.
So far, the VPN route that comprises RD100:1 that local terminal equipment is handled first bgp process is moved to second bgp process, and final migration results is as shown in Figure 4.
In the embodiment of the invention, the VPN route can be the VPN-IPV6 route that comprises the VPN-IPV4 route of RD or comprise RD, and the equipment that can move the VPN route that comprises RD also comprises gateway, switch and other the network equipment.
Embodiment three
As shown in Figure 5, the embodiment of the invention provides a kind of equipment that moves routing iinformation, specifically comprises:
Detect trigger module 501, be used to detect the routing iinformation that first bgp process handles and surpass preset threshold value, select second bgp process to handle to comprise the routing iinformation of the RD that needs move;
Or receive trigger module 502, and being used to receive trigger command, this trigger command is used to indicate the routing iinformation of the RD that will comprise the needs migration to move to second bgp process from first bgp process.
Removing module 507 after being used for the routing iinformation of the RD that comprises needs migrations moved to second bgp process, is deleted the routing iinformation that comprises the RD that needs move in first bgp process.
Embodiment four
The embodiment of the invention provides a kind of system that moves routing iinformation, specifically comprises: local terminal equipment reaches the neighbor device with local terminal equipment interactive information,
Preserve RD and first bgp process of local terminal equipment and the incidence relation information of second bgp process on the local terminal equipment;
When the routing iinformation of the RD that comprises needs migration that need first bgp process of local terminal equipment be handled is moved to second bgp process when handling, the incidence relation of the RD of needs migration and first bgp process is revised as the RD that need move and the incidence relation of second bgp process;
Local terminal equipment enables the Graceful Restart ability to the bgp process of neighbor device;
Neighbor device sends the routing iinformation of the RD that comprises the needs migration to local terminal equipment behind its bgp process Graceful Restart;
The routing iinformation of the RD that comprises the needs migration that local terminal equipment will receive is transmitted to second bgp process, and after the routing iinformation of the RD that will comprise the needs migration is moved to second bgp process, this routing iinformation that first bgp process is handled is deleted.
In embodiments of the present invention; Through forwarding module after the routing iinformation of the RD that will comprise needs migrations is moved to second bgp process; The routing iinformation deletion of the RD that comprises needs migration that just first bgp process is handled makes that first bgp process is still handled this routing iinformation in the process of this routing iinformation of migration to transmit the normal business of transmitting of layer with control, thereby; Guaranteed that professional the forwarding do not interrupted in the process of migration routing iinformation; In addition, need not reconfigure routing iinformation, so reduced user configured cost to second bgp process.
All or part of content in the technical scheme that above embodiment provides can realize that through software programming its software program is stored in the storage medium that can read, storage medium for example: the hard disk in the computer, CD or floppy disk.
More than be merely preferred embodiment of the present invention, or not all within spirit of the present invention and principle in order to restriction the present invention, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of moving routing iinformation is characterized in that, when the routing iinformation of the Route Distinguisher RD that comprises needs migration that need the first Border Gateway Protocol (BGP) process be handled was moved to the processing of second bgp process, said method comprised:
The said RD of migration and the incidence relation of said first bgp process of needing is revised as the said RD of migration and the incidence relation of said second bgp process of needing;
After revising said incidence relation, the bgp process of neighbor device is enabled the Graceful Restart ability;
Receive the routing iinformation of the RD that comprises said needs migration that said neighbor device sends behind its bgp process Graceful Restart;
The said routing iinformation that comprises the RD of needs migration that receives is transmitted to said second bgp process.
2. the method for migration routing iinformation according to claim 1; It is characterized in that; When said routing iinformation as the Route Distinguisher RD that comprises needs migration that need the first Border Gateway Protocol (BGP) process be handled is moved to the processing of second bgp process, be specially:
When detecting routing iinformation that said first bgp process handles and surpass preset threshold value, select second bgp process to handle to comprise the routing iinformation of the RD that needs move; Perhaps
Receive trigger command, indicate the said routing iinformation that comprises the RD of needs migration to move to second bgp process from first bgp process.
3. the method for migration routing iinformation according to claim 1; It is characterized in that; Before said incidence relation with said RD that need move and said first bgp process is revised as the incidence relation of said RD that need move and said second bgp process, also comprise:
The routing iinformation of the RD of the needs migration that said first bgp process is handled is set to the state of cutting out.
4. the method for migration routing iinformation according to claim 3 is characterized in that, the said said routing iinformation that comprises the RD of needs migration that will receive is transmitted to after said second bgp process, also comprises:
Deletion is set to the routing iinformation of the RD that comprises the needs migration of the state of cutting out from said first bgp process.
5. an equipment that moves routing iinformation is characterized in that, comprising:
Modified module; Be used for moving to second bgp process when handling, the incidence relation of the said RD that needs migration and said first bgp process is revised as the said RD that need move and the incidence relation of said second bgp process when the routing iinformation of the Route Distinguisher RD that comprises needs migration that need the first Border Gateway Protocol (BGP) process be handled;
The Graceful Restart module is used for the bgp process of neighbor device is enabled the Graceful Restart ability;
Receiver module is used to receive the routing iinformation of the RD that comprises the needs migration that said neighbor device sends behind its bgp process Graceful Restart;
Forwarding module is used for the said routing iinformation that comprises the RD of needs migration that receives is transmitted to said second bgp process.
6. according to the equipment of the said migration routing iinformation of claim 5, it is characterized in that said equipment also comprises:
Detect trigger module, be used to detect the routing iinformation that said first bgp process handles and surpass threshold value, select second bgp process to handle to comprise the routing iinformation of the RD that needs move;
Or the reception trigger module, being used to receive trigger command, the routing iinformation that indication will comprise the RD of needs migrations is moved to second bgp process from first bgp process.
7. according to the equipment of the said migration routing iinformation of claim 6, it is characterized in that said equipment also comprises:
Removing module is used for after the said routing iinformation that comprises the RD of needs migration that said forwarding module will receive is transmitted to said second bgp process, deleting the routing iinformation of the RD that comprises the needs migration in said first bgp process.
8. a system that moves routing iinformation is characterized in that, comprising: local terminal equipment reaches the neighbor device with local terminal equipment interactive information;
When the routing iinformation of the RD that comprises needs migration that need first bgp process of said local terminal equipment be handled is moved to second bgp process when handling, the RD that said local terminal equipment will move and the incidence relation of first bgp process are revised as the RD that need move and the incidence relation of second bgp process;
Said local terminal equipment enables the Graceful Restart ability to the bgp process of said neighbor device;
Said neighbor device sends the routing iinformation of the RD that comprises the needs migration to said local terminal equipment behind its bgp process Graceful Restart;
The said routing iinformation that comprises the RD of needs migration that said local terminal equipment will receive is transmitted to second bgp process.
9. the system of said according to Claim 8 migration routing iinformation is characterized in that, when said routing iinformation as the Route Distinguisher RD that comprises needs migration that need the first Border Gateway Protocol (BGP) process be handled is moved to the processing of second bgp process, is specially:
When the routing iinformation that said local terminal Equipment Inspection is handled to first bgp process surpasses preset threshold value, select second bgp process of said local terminal equipment to handle to comprise the routing iinformation of the RD that needs move; Perhaps
Said local terminal equipment receives trigger command, indicates the said routing iinformation that comprises the RD of needs migration to move to second bgp process of said local terminal equipment from first bgp process of said local terminal equipment.
10. the system of said according to Claim 8 migration routing iinformation; It is characterized in that; After the said routing iinformation that comprises the RD of needs migration that said local terminal equipment will receive is transmitted to second bgp process, this routing iinformation deletion that said local terminal equipment is handled first bgp process.
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| CN200910109477A CN101997757B (en) | 2009-08-19 | 2009-08-19 | Method, equipment and system for transferring routing information |
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| CN200910109477A CN101997757B (en) | 2009-08-19 | 2009-08-19 | Method, equipment and system for transferring routing information |
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| CN101997757A CN101997757A (en) | 2011-03-30 |
| CN101997757B true CN101997757B (en) | 2012-10-17 |
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| CN106411728B (en) * | 2016-09-29 | 2019-10-11 | 新华三技术有限公司 | Route processing method and device |
| CN110971516B (en) * | 2019-10-25 | 2021-01-15 | 华为技术有限公司 | Method and device for processing routing information |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101268662A (en) * | 2005-07-15 | 2008-09-17 | 艾利森电话股份有限公司 | Router and method for protocol process migration |
| CN101494604A (en) * | 2009-03-04 | 2009-07-29 | 华为技术有限公司 | Migrating method and migrating device for VRF, and VRF distributed communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101268662A (en) * | 2005-07-15 | 2008-09-17 | 艾利森电话股份有限公司 | Router and method for protocol process migration |
| CN101494604A (en) * | 2009-03-04 | 2009-07-29 | 华为技术有限公司 | Migrating method and migrating device for VRF, and VRF distributed communication system |
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