CN101610208A - The method of announcing between bgp neighbor, system and router - Google Patents
The method of announcing between bgp neighbor, system and router Download PDFInfo
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- CN101610208A CN101610208A CNA2008101271096A CN200810127109A CN101610208A CN 101610208 A CN101610208 A CN 101610208A CN A2008101271096 A CNA2008101271096 A CN A2008101271096A CN 200810127109 A CN200810127109 A CN 200810127109A CN 101610208 A CN101610208 A CN 101610208A
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Abstract
The embodiment of the invention relates to the communications field, method, system and the router announced between a kind of bgp neighbor are provided, comprise: set up peer-to-peer with neighboring router and be connected, obtain the notification message Notification Message of neighboring router, described Notification Message comprises the ability information of described neighboring router and/or the soft notification message of described neighboring router, carries out the BGP announcement according to described ability information and/or soft notification message and described neighboring router and handles.Like this, realized that the dynamic capability between the peer-to-peer is consulted, do not interrupted Peer Session, made router under the vicissitudinous situation of ability under the same Peer Session, can not destroy other ongoing business.
Description
Technical field
The present invention relates to the communications field, method, system and the router announced between particularly a kind of bgp neighbor.
Background technology
BGP (Border Gateway Protocol, Border Gateway Protocol) is the dynamic routing protocol between a kind of AS of being used for (Autonomous System, autonomous system).The router that sends BGP message is called BGP speaker (Speaker), and it receives or produce new routing iinformation, and other BGP speaker is given in issue (Advertise).Claim peer-to-peer (Peer) between the BGP speaker that exchanges messages mutually mutually.BGP uses TCP as its transport layer protocol, Open message (open message) is used to set up annexation between the bgp peer (that is: peer-to-peer business, Peer Session), when initially setting up, consults PeerSession various abilities, such as address family ability, Refresh ability, GR (GracefulRestart smoothly restarts) ability etc.And when BGP detected error condition, BGP then sent Notification message (notification message) to peer-to-peer, and the connection between the bgp peer afterwards can be interrupted.
The various abilities of BGP just when Peer Session connects, are consulted by issue Open message at present.In order to enable a kind of ability or to go to enable an ability that has existed (, needing to add the configuration of IPv4 multicast address family now), must rebuild the Peer Session that has set up such as only having disposed IPv4 unicast address family originally.
On the other hand, after the Notification message of using sends to neighboring router at present, can restart PeerSession.When the local terminal router makes a mistake, also need to send out a notification message to neighboring router, need restart Peer Session.Also have a kind of ability between two routers enable and go to enable all to rebuild Peer Session.
Rebuild Peer Session and destroyed the service of normally having carried out on this Peer Session, cause the service disruption of normally having carried out, cause serious route oscillation problem.
Summary of the invention
The embodiment of the invention provides method, system and the router of announcing between a kind of bgp neighbor, the service disruption during with solution Peer Session and the problem of route oscillation.
In order to solve the problems of the technologies described above, the embodiment of the invention provides the method for announcing between a kind of bgp neighbor, comprising:
Setting up peer-to-peer with neighboring router is connected;
Obtain the notification message Notification Message of neighboring router, described NotificationMessage comprises the ability information of described neighboring router and/or the soft notification message of described neighboring router;
Carrying out the BGP announcement according to described ability information and/or soft notification message and described neighboring router handles.
The embodiment of the invention also provides a kind of router, comprising: connect and set up the unit, and information acquisition unit, negotiation element, wherein:
The unit is set up in described connection, is used for establishing a connection with adjacent router;
Described information acquisition unit is used to obtain the Notification Message of described neighboring router, and described Notification Message comprises the ability information and/or the soft notification message of described neighboring router;
Described negotiation element is used for carrying out the BGP announcement according to described ability information and/or soft notification message and described neighboring router and handles.
The method that the embodiment of the invention provides by the embodiment of the invention, system and router, carrying capacity information and soft notification message in Notification Message, like this, do not need to restart PeerSession and just can realize that the dynamic capability between the peer-to-peer consults, do not interrupt Peer Session, make router under the vicissitudinous situation of ability under the same Peer Session, can not destroy other ongoing business.
Description of drawings
The flow chart of the method for announcing between the bgp neighbor that Fig. 1 provides for the embodiment of the invention;
The structural representation of the router that Fig. 2 provides for the embodiment of the invention;
The structural representation of the system that announces between the bgp neighbor that Fig. 3 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides method and the router of announcing between a kind of bgp neighbor, comprising: set up peer-to-peer with neighboring router and be connected; Obtain the notification message Notification Message of neighboring router, described Notification Message comprises the ability information of described neighboring router and/or the soft notification message of described neighboring router; Carrying out the BGP announcement according to described ability information and/or soft notification message and described neighboring router handles.And provide the router of realizing the method announced between this bgp neighbor.Like this, realized that the dynamic capability between the peer-to-peer is consulted, do not interrupted Peer Session, made router under the vicissitudinous situation of ability under the same Peer Session, can not destroy other ongoing business.
Describe the technical scheme of the embodiment of the invention in detail below in conjunction with accompanying drawing.
The flow chart of the method for announcing between the bgp neighbor that Fig. 1 provides for the embodiment of the invention, as shown in Figure 1, the method for announcing between this bgp neighbor comprises step:
101, setting up peer-to-peer (peer) with neighboring router is connected;
102, obtain the notification message Notification Message of neighboring router, described NotificationMessage comprises the ability information of this neighboring router and/or the soft notification message of this neighboring router, concrete:
Obtain the ability information of this neighboring router and/or the soft notification message of described neighboring router by expansion Notification Message exactly, before the ability of expansion notification message, whether the two ends of also using Open (opening) message to consult peer-to-peer have the ability of expansion notification message, if notification capabilities is not supported to expand in the opposite end, then the local terminal utility command of peer-to-peer stops announcement, perhaps do not use any measure to be fine yet, because when the Notification ability that local terminal is realized is expanded, and the opposite end is unsupported the time, principle according to wide-in and strict-out: it is unusual that the Notification Message that sends can not cause the opposite end to be handled yet, and for example only is daily record of record.
In an embodiment of the present invention, the Error Code (major error sign indicating number) by expansion Notification Message makes it have new implication: Negotiate Code (consulting sign indicating number), use the numeral (having used 1-6 originally) except that 1-6; Expand Error Subcode (sub-error sign indicating number) simultaneously, make it have new implication: Action Code (active coding) uses 0 or 1,0 representative to go to enable, and 1 representative enables.In follow-up data, use ability sign indicating number (Capability Code), capability length (Capability Length) and ability value (Capability Value), and these three values are corresponding with the ability of open message regulation.
103, carry out capability negotiation according to described ability information and/or soft notification message and described neighboring router.
By the Notification Message after the above expansion, make BGP Peer Session can realize dynamic capability negotiation, on same Peer Session, enable or do not influence other abilities when going to enable certain ability thereby reach.
The method of announcing between this bgp neighbor has only been used the primary key of Notification Message, and this primary key can be planned to certain coding between the 129-255, reserves the coding of 7-64 and realizes hard informing function, and the coding of 65-128 is realized soft informing function.Do not use newly-increased message like this, expand more succinct, simpler effectively in the realization aspect, concerning BGP, fairly simple.
Accordingly, the embodiment of the invention also provides a kind of router, as shown in Figure 2, comprising: connect and set up unit 21, and information acquisition unit 22, negotiation element 23, wherein:
Described information acquisition unit 22 is used to obtain the NotificationMessage of described neighboring router, and described Notification Message comprises the ability information and/or the soft notification message of described neighboring router
Described negotiation element 23, be used for carrying out capability negotiation according to described ability information and/or soft notification message and described neighboring router, specifically: negotiation element 23 sends to described neighboring router by Notification Message with its ability information and/or soft notification message, described neighboring router is resolved described Notification Message, obtains the ability information and/or the soft notification message of this router.
Further, this router also comprises judging unit 24, is arranged on before the information acquisition unit 22, is used for determining whether neighboring router has the ability of expansion Notification Message.
Above-mentioned ability information comprises: active coding, ability sign indicating number, capability length and ability value.
The router of the embodiment of the invention has been realized carrying out dynamic capability and has been consulted under the prerequisite of not interrupting Peer Session.By having expanded the Notification Message of BGP, make it have the dynamic capability negotiation functionality, can support soft informing function simultaneously, thereby realize under the vicissitudinous situation of ability under the same Peer Session, can not destroying other business.
Illustrate the method announced between above-mentioned bgp neighbor and the embodiment of router applications below.
Embodiment one:
(1) set up a Peer Session between Router A and the Router B and be connected, and the multicast enabled ability.
(2) Router A sends Notification Message for Router B, and this NotificationMessage carries Router A multicast enabled ability.
(3) Router B receives the Notification Message that Router A sends, and resolves Notification Message, knows the ability of Router A multicast enabled.
(4) if also enable the ability of IPv4 multicast on the Router B, then Router B knows that Router B and Router A multicast-capable consult successfully, send to Router A Notification Message simultaneously, this Notification Message carries Router B multicast enabled ability.
(5) Router A receives the Notification Message that carries Router B multicast enabled ability that Router B sends, and then Router A knows that Router A and Router B multicast-capable consult successfully.
Like this, Router A and Router B know that respectively the other side supports multicast-capable, have reached the purpose of dynamic negotiation.When not having dynamic capability to consult, can only be by rebuilding the method for Peer Session, multicast path is caused to transmit and is interrupted by interruption like this.And consult by dynamic capability now, constantly PeerSession directly sets up the multicast of peer-to-peer.
Embodiment two:
(1) set up a Peer Session between Router A and the Router B and be connected, and Router A multicast enabled ability.
(3) Router A expansion Notification Message makes this Notification Message carry soft notification message, and Router A sends the Notification Message that carries soft notification message to Router B.
(4) after RouterB receives Notification Message, resolve Notification Message, obtain this Notification Message and carry soft notification message, know that Router A has the ability of soft notice, trigger resending the local terminal route.
Like this, realize soft notice, can effectively reduce a lot of past and want the fault processing of disconnection Peer Session, guaranteed the unobstructed of forwarding plane.
Accordingly, the embodiment of the invention also provides notification system between a kind of bgp neighbor, and as shown in Figure 3, this system comprises the first router 31 and the second router 32, wherein:
Described the first router 31, being used for setting up peer-to-peer with the second router 32 is connected, send Notification Message to the second router 32, described Notification Message comprises the ability information of described neighboring router and/or the soft notification message of described neighboring router;
Described the second router 32 is used to receive the NotificationMessage that the first router 31 sends, and carries out BGP announcement processing according to described ability information and/or soft notification message with described the first router 31.
Further, described the second router 32 is used to also judge whether described the first router 31 has the ability of the described Notification Message of expansion, if having, then obtains Notification Message from described the first router 31.
Further, described the second router 32, also be used for its ability information and/or soft notification message being sent to described the first router 31 by Notification Message, so that described the first router 31 receives and resolves described Notification Message, obtain described ability information and/or soft notification message, wherein said ability information comprises active coding, ability sign indicating number, capability length and ability value.
More than method, system and the router of announcing between a kind of bgp neighbor that the embodiment of the invention provided is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, the content of this specification embodiment should not be construed as limitation of the present invention.
Claims (10)
1, the method for announcing between a kind of bgp neighbor is characterized in that, comprising:
Setting up peer-to-peer with neighboring router is connected;
Obtain the notification message Notification Message of neighboring router, described NotificationMessage comprises the ability information of described neighboring router and/or the soft notification message of described neighboring router;
Carrying out the BGP announcement according to described ability information and/or soft notification message and described neighboring router handles.
2, the method for announcing between bgp neighbor as claimed in claim 1, it is characterized in that, before the described Notification Message that obtains neighboring router, further comprise: judge whether described neighboring router has the ability of the described Notification Message of expansion, if have, then obtain Notification Message from described neighboring router.
3, the method of announcing between bgp neighbor as claimed in claim 1, it is characterized in that, describedly carry out the BGP announcement according to described ability information and/or soft notification message and described neighboring router and handle, specifically comprise: its ability information and/or soft notification message are sent to described neighboring router by Notification Message, so that described neighboring router receives and resolves described NotificationMessage, obtain described ability information and/or soft notification message, wherein said ability information comprises active coding, the ability sign indicating number, capability length and ability value.
4, a kind of router is characterized in that, comprising: connect and set up the unit, and information acquisition unit, negotiation element, wherein:
The unit is set up in described connection, is used for establishing a connection with adjacent router;
Described information acquisition unit is used to obtain the Notification Message of described neighboring router, and described Notification Message comprises the ability information and/or the soft notification message of described neighboring router;
Described negotiation element is used for carrying out the BGP announcement according to described ability information and/or soft notification message and described neighboring router and handles.
5, router as claimed in claim 4, it is characterized in that, described negotiation element, be used for its ability information and/or soft notification message being sent to described neighboring router by Notification Message, so that described neighboring router is resolved described Notification Message, obtain the ability information and/or the soft notification message of described router.
6, router as claimed in claim 4 is characterized in that, described router also comprises judging unit, is arranged on before the information acquisition unit, is used for determining whether neighboring router has the ability of expansion Notification Message.
7, as claim 4,5 or 6 described routers, it is characterized in that described ability information comprises: active coding, ability sign indicating number, capability length and ability value.
8, notification system between a kind of bgp neighbor is characterized in that, comprises the first router and the second router, wherein:
Described the first router, being used for setting up peer-to-peer with the second router is connected, send Notification Message to the second router, described Notification Message comprises the ability information of described neighboring router and/or the soft notification message of described neighboring router;
Described the second router is used to receive the Notification Message that the first router sends, and carries out BGP announcement processing according to described ability information and/or soft notification message with described the first router.
9, notification system between bgp neighbor as claimed in claim 8, it is characterized in that, described the second router, be used to also judge whether described the first router has the ability of the described NotificationMessage of expansion, if have, then obtain Notification Message from described the first router.
10, notification system between bgp neighbor as claimed in claim 8, it is characterized in that, described the second router, also be used for its ability information and/or soft notification message being sent to described the first router by Notification Message, so that described the first router receives and resolves described Notification Message, obtain described ability information and/or soft notification message, wherein said ability information comprises active coding, ability sign indicating number, capability length and ability value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101271096A CN101610208A (en) | 2008-06-19 | 2008-06-19 | The method of announcing between bgp neighbor, system and router |
| PCT/CN2009/072085 WO2009152728A1 (en) | 2008-06-19 | 2009-06-02 | A method, system and router for advertising between border gateway protocol neighbors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101271096A CN101610208A (en) | 2008-06-19 | 2008-06-19 | The method of announcing between bgp neighbor, system and router |
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| CN101610208A true CN101610208A (en) | 2009-12-23 |
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| CNA2008101271096A Pending CN101610208A (en) | 2008-06-19 | 2008-06-19 | The method of announcing between bgp neighbor, system and router |
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| WO (1) | WO2009152728A1 (en) |
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| CN101989952A (en) * | 2010-11-03 | 2011-03-23 | 中兴通讯股份有限公司 | Multicasting method and device |
| CN102724130A (en) * | 2012-06-28 | 2012-10-10 | 杭州华三通信技术有限公司 | Border gateway protocol (BGP) route management method and router |
| WO2013044751A1 (en) * | 2011-09-30 | 2013-04-04 | 华为技术有限公司 | Performance-based routing method and device |
| CN104253759A (en) * | 2013-06-30 | 2014-12-31 | 华为技术有限公司 | Method, device and system for forwarding messages |
| CN103036786B9 (en) * | 2011-09-30 | 2016-04-20 | 华为技术有限公司 | Method for routing and the equipment of based on performance |
| WO2016123928A1 (en) * | 2015-02-06 | 2016-08-11 | 中兴通讯股份有限公司 | Transmission processing method and device |
| WO2016173195A1 (en) * | 2015-04-29 | 2016-11-03 | 中兴通讯股份有限公司 | Method for advertising route and withdrawing route and corresponding routing device |
| CN103746881B (en) * | 2014-01-13 | 2017-03-15 | 杭州华三通信技术有限公司 | Neighbor state detection method and device in EVI networks |
| CN107465614A (en) * | 2016-06-06 | 2017-12-12 | 中兴通讯股份有限公司 | A kind of method and apparatus for realizing Border Gateway Protocol two dimension route |
| CN109246008A (en) * | 2014-07-23 | 2019-01-18 | 华为技术有限公司 | The network equipment, system and the method for sending bgp information |
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| US8806032B2 (en) * | 2010-12-15 | 2014-08-12 | At&T Intellectual Property I, L.P. | Methods and apparatus to migrate border gateway protocol sessions between routers |
| CN113300950B (en) * | 2020-04-01 | 2023-03-24 | 阿里巴巴集团控股有限公司 | Data processing method and device, electronic equipment and computer readable medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6553423B1 (en) * | 1999-05-27 | 2003-04-22 | Cisco Technology, Inc. | Method and apparatus for dynamic exchange of capabilities between adjacent/neighboring networks nodes |
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2008
- 2008-06-19 CN CNA2008101271096A patent/CN101610208A/en active Pending
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2009
- 2009-06-02 WO PCT/CN2009/072085 patent/WO2009152728A1/en active Application Filing
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| CN101989952A (en) * | 2010-11-03 | 2011-03-23 | 中兴通讯股份有限公司 | Multicasting method and device |
| CN103036786B9 (en) * | 2011-09-30 | 2016-04-20 | 华为技术有限公司 | Method for routing and the equipment of based on performance |
| WO2013044751A1 (en) * | 2011-09-30 | 2013-04-04 | 华为技术有限公司 | Performance-based routing method and device |
| CN103036786A (en) * | 2011-09-30 | 2013-04-10 | 华为技术有限公司 | Route method and device based on performance |
| US9900242B2 (en) | 2011-09-30 | 2018-02-20 | Huawei Technologies Co., Ltd | Performance-based routing method and device |
| CN103036786B (en) * | 2011-09-30 | 2016-03-02 | 华为技术有限公司 | Based on method for routing and the equipment of performance |
| CN102724130A (en) * | 2012-06-28 | 2012-10-10 | 杭州华三通信技术有限公司 | Border gateway protocol (BGP) route management method and router |
| CN102724130B (en) * | 2012-06-28 | 2016-01-20 | 杭州华三通信技术有限公司 | A kind of BGP route management method and routing device |
| US10686698B2 (en) | 2013-06-30 | 2020-06-16 | Huawei Technologies Co., Ltd. | Packet forwarding method, apparatus, and system |
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| CN104253759A (en) * | 2013-06-30 | 2014-12-31 | 华为技术有限公司 | Method, device and system for forwarding messages |
| CN103746881B (en) * | 2014-01-13 | 2017-03-15 | 杭州华三通信技术有限公司 | Neighbor state detection method and device in EVI networks |
| CN109246008A (en) * | 2014-07-23 | 2019-01-18 | 华为技术有限公司 | The network equipment, system and the method for sending bgp information |
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| WO2016173195A1 (en) * | 2015-04-29 | 2016-11-03 | 中兴通讯股份有限公司 | Method for advertising route and withdrawing route and corresponding routing device |
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| CN110611615B (en) * | 2018-11-28 | 2021-08-24 | 新华三技术有限公司 | Routing information transmission method and device |
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| Publication number | Publication date |
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| WO2009152728A1 (en) | 2009-12-23 |
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Open date: 20091223 |