CN104734929A - Method and device for routing diffusion - Google Patents
Method and device for routing diffusion Download PDFInfo
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- CN104734929A CN104734929A CN201310697935.5A CN201310697935A CN104734929A CN 104734929 A CN104734929 A CN 104734929A CN 201310697935 A CN201310697935 A CN 201310697935A CN 104734929 A CN104734929 A CN 104734929A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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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
- H04L45/04—Interdomain routing, e.g. hierarchical routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2212/00—Encapsulation of packets
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention discloses a method and a device for routing diffusion, and relates to the technical field of communication. The problem that routing diffusion between MCEs or between an MCE and a PE consumes a large amount CPU and memory resources and cannot be supported by equipment can be solved. The method of the invention comprises the steps of setting the format of network layer reachability information NLRI, packaging a virtual private network VPN route according to the format of the NLRI, and sending the packaged VPN route through a border gateway protocol BGP. The method and the device of the invention are applicable to routing diffusion between a PE and an MCE or between MCEs.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and device of routing diffusion.
Background technology
The development of cloud computing technology, has promoted the development of publicly-owned cloud business.Publicly-owned cloud data center is the most important infrastructure that publicly-owned cloud business provides, and it needs the access supporting a large amount of tenant.For there is IP(Internet Protocol between safety and tenant, procotol) reason such as address overlap, different tenant needs to use different three-layer VPNs (Virtual Private Network, VPN (virtual private network)).Three-layer VPN generally can adopt MPLS(Multiprotocol Label Switch, multiprotocol label switching) technology such as VPN realizes.MPLSVPN relates generally to CE(Customer Edge, user's edge device), PE(Provider Edge, operator edge device) and P (Provider Router, core router) equipment.Publicly-owned cloud data center does not generally dispose MPLS VPN in inside.Publicly-owned cloud data center egress router can as PE equipment, and even as CE equipment, other router of publicly-owned cloud data center inside then can only as CE equipment.The CE equipment of the multiple VPN of this support, is referred to as MCE(Multi-VPN-Instance Customer Edge, user's edge device of many VPN instance).In publicly-owned cloud data center, if adopt NVO3(NetworkVirtualization Over Layer3, three-layer network is virtual) technology, then the rear three layers of centralized NVO3 gateway forwarded of NVO3 termination are exactly a typical MCE.It is all the diffusion being realized VPN route by Routing Protocol between MCE and PE and MCE.The method of prior art is: on MCE and PE, configure different interfaces respectively bind different VPN, then each VPN uses different IGP (InteriorGateway Protocol respectively, Interior Gateway Protocol) process or BGP (Border Gateway Protocol, Border Gateway Protocol) session carry out routing diffusion.
In prior art, at least there are the following problems: under certain situation, needs MCE and PE to support the VPN that quantity is very many, and such as, centralized NVO3 gateway needs the VPN instance quantity supported to be far longer than general MCE, can reach several thousand, several ten thousand even 1,000,000 grades.In this case, adopt the routing diffusion mode between existing MCE and PE, will a large amount of CPU(Central Processing Unit be consumed, central processing unit) and memory source, equipment is difficult to support.
Summary of the invention
Embodiments of the invention provide a kind of method and device of routing diffusion, and can solve when to carry out routing diffusion between MCE or between MCE and PE, consume a large amount of CPU and memory source, equipment is difficult to the problem supported.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, embodiments of the invention provide a kind of method of routing diffusion, comprising:
The form of Network Layer Reachable Information NLRI is set;
According to the form encapsulation VPN (virtual private network) VPN route of described NLRI;
The described VPN route of encapsulation is sent by Border Gateway Protocol (BGP).
In conjunction with first aspect, in the first possible implementation of first aspect, the described encapsulation of the form according to described NLRI VPN (virtual private network) VPN route comprises:
Subsidiary Address-Family Identifier SAFI in described VPN route is set to preset value.
In conjunction with first aspect, in the implementation that the second of first aspect is possible, before the described encapsulation of the form according to described NLRI VPN (virtual private network) VPN route, described method also comprises:
Carry out VPN configuration;
Carry out BGP configuration.
In conjunction with the implementation that the second of first aspect is possible, in the third possible implementation of first aspect, described in carry out VPN configuration comprise:
Configuration VPN instance, described VPN instance and described VPN one_to_one corresponding;
For described VPN instance configuration Route Distinguisher RD and route target RT;
The address race configuring described VPN is IPv4.
In conjunction with the implementation that the second of first aspect is possible, in the 4th kind of possible implementation of first aspect, described in carry out BGP configuration comprise:
Specify the VPN needing to be sent route by described BGP.
Second aspect, embodiments of the invention provide a kind of device of routing diffusion, comprising:
Setting unit, for arranging the form of Network Layer Reachable Information NLRI;
Encapsulation unit, for the form encapsulation VPN (virtual private network) VPN route according to described NLRI;
Transmitting element, for sending the described VPN route of encapsulation by Border Gateway Protocol (BGP).
In conjunction with second aspect, in the first possible implementation of second aspect, described encapsulation unit comprises:
Subelement is set, for the subsidiary Address-Family Identifier SAFI in described VPN route is set to preset value.
In conjunction with second aspect, in the implementation that the second of second aspect is possible, described device also comprises:
Dispensing unit, for carrying out VPN configuration;
Described dispensing unit is also for carrying out BGP configuration.
In conjunction with the implementation that the second of second aspect is possible, in the third possible implementation of second aspect, described dispensing unit comprises:
Configuration subelement, for configuring VPN instance, described VPN instance and described VPN one_to_one corresponding;
Described configuration subelement is also for being described VPN instance configuration Route Distinguisher RD and route target RT;
Described configuration subelement is also IPv4 for configuring the address race of described VPN.
In conjunction with the implementation that the second of second aspect is possible, in the 4th kind of possible implementation of second aspect, described dispensing unit comprises:
Specify subelement, be used to specify the VPN needing to be sent route by described BGP.
In prior art, be the diffusion being carried out many VPN route by multiple IGP process or multiple bgp session between MCE or between MCE and PE.The method of the routing diffusion that the embodiment of the present invention provides and device, arrange the form of Network Layer Reachable Information NLRI in MCE in the present invention; When carrying out VPN (virtual private network) VPN routing diffusion, be the form of the NLRI arranged by VPN routed encapsulation; The VPN route of encapsulation is sent by Border Gateway Protocol (BGP).Because adopt the NLRI form arranged to encapsulate VPN route, between MCE or between MCE and PE, the route of multiple VPN can be spread by a bgp session, reduce the consumption of CPU and memory source, dramatically reduce the CPU burden of MCE and PE.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The method flow diagram that Fig. 1 provides for one embodiment of the invention;
The network architecture diagram that Fig. 2 provides for further embodiment of this invention;
The method flow diagram that Fig. 3 provides for further embodiment of this invention;
The Network Layer Reachable Information form schematic diagram that Fig. 4 provides for further embodiment of this invention;
The encapsulation format schematic diagram that Fig. 5 provides for further embodiment of this invention;
The address schematic diagram that Fig. 6 provides for further embodiment of this invention;
The apparatus structure schematic diagram that Fig. 7, Fig. 8 provide for further embodiment of this invention;
The apparatus structure schematic diagram that Fig. 9 provides for further embodiment of this invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
One embodiment of the invention provides a kind of method of routing diffusion, and for the VPN routing diffusion between MCE and PE or between multiple MCE, for MCE to PE diffusing V PN route, as shown in Figure 1, described method comprises:
101, MCE arranges the form of Network Layer Reachable Information NLRI.
Wherein, NLRI(Network Layer Reachability Information, Network Layer Reachable Information) for routed encapsulation adopt form.
102, MCE is according to the form packaging V PN route of NLRI.
Wherein, when packaging V PN route, the subsidiary Address-Family Identifier SAFI in VPN route is set to preset value.
103, MCE sends the VPN route of encapsulation by Border Gateway Protocol (BGP).
Wherein, before packaging V PN route, MCE also needs to carry out VPN configuration and BGP configuration.VPN configuration comprises configuration VPN instance, VPN instance and VPN one_to_one corresponding; For VPN instance configuration RD(RouteDistinguisher, Route Distinguisher) and RT(Route Target, route target); The address race of configuration VPN is IPv4 (Internet Protocol version4, internet protocol version 4).BGP configuration comprises the VPN specifying and need to be sent route by BGP.
In prior art, be the diffusion being carried out many VPN route by multiple IGP process or multiple bgp session between MCE or between MCE and PE.The form of Network Layer Reachable Information NLRI is set in the embodiment of the present invention in MCE; When carrying out VPN routing diffusion, be the form of the NLRI arranged by VPN routed encapsulation; The VPN route of encapsulation is sent by Border Gateway Protocol (BGP).Because adopt the NLRI form arranged to encapsulate VPN route, between MCE or between MCE and PE, the route of multiple VPN can be spread by a bgp session, reduce the consumption of CPU and memory source, dramatically reduce the CPU burden of MCE and PE.
Further embodiment of this invention provides a kind of method of routing diffusion, as shown in Figure 2, tenant is by the server of wide-area network access cloud data center different VPN, wide area network PE is connected with cloud data center egress router, gateway is connected with egress router by three-layer network, the embodiment of the present invention is for egress router to gateway diffusing V PN route, and egress router and gateway are all equivalent to MCE equipment.As shown in Figure 3, described method comprises:
201, egress router carries out VPN instance configuration.
Wherein, VPN instance also referred to as VRF(VPN Routing and Forwarding table, VPN route forwarding table), the VPN one_to_one corresponding be connected with on egress router.Egress router exists one or more VPN instance, each VPN instance have oneself independently routing table, transmit and corresponding interface.
202, egress router is VPN instance configuration RD and RT.
Wherein, the address space that RD can realize VPN is independent, and RD configures based on VPN instance, is carried in routing protocol packet, and puts together in VPN address; RT is divided into introducing route target import RT and export route targets export RT, and the route for control VPN is introduced.When router is by BGP diffusing V PN route, can export RT attribute be placed in protocol massages, receives the router of this protocol massages, this route can be incorporated into import RT and equal in the VPN instance of export RT.
203, the address race of egress router configuration VPN is IPv4.
Wherein, in the embodiment of the present invention, what VPN address adopted is IPv4 address, and the routing iinformation for IPv4 spread by bgp protocol, be then configured to IPv4 by the address race of VPN on egress router.
204, egress router carries out BGP configuration.
It should be noted that, between egress router and gateway, transmit VPN route by BGP, to ensure the correct diffusion of VPN route, then need at egress router configuration BGP.
205, egress router specifies the VPN being sent route by this bgp session.
206, egress router arranges the form of NLRI.
Wherein, as shown in Figure 4, be NLRI form in the embodiment of the present invention.The SAFI(Subsequent Address Family Identifier that definition one is new simultaneously, subsidiary Address-Family Identifier), represent the NLRI form that VPN routed encapsulation adopts.
It should be noted that, in the embodiment of the present invention, in Prefix, comprise multiple IPv4 address prefix and only have compared with an IPV4 address prefix in prior art, the efficiency of routing diffusion can be improved.
207, egress router and gateway set up bgp session.
It should be noted that, the session between bgp neighboring router is based upon TCP(TransmissionControl Protocol, transmission control protocol) on agreement.Transmission Control Protocol provides a kind of transmission mechanism reliably, supports the session of two types: external BGP and internal bgp.External BGP is the session between the router belonging to two different autonomous systems, and these routers adjoin, and shares identical medium and subnet.Internal bgp is the session between the router of an autonomous system inside, and it is used in autonomous system internal coordination and the synchronous process finding route.
Wherein, embodiment of the present invention middle outlet router and gateway are in identical autonomous system, set up the session of internal bgp between egress router and gateway.After bgp session is set up, egress router and gateway just can phase counterdiffusion routing iinformations.The embodiment of the present invention is for egress router and gateway diffusion route.
208, egress router encapsulates the VPN route that will spread.
Wherein, BGP spread route time, by BGP message encapsulation in MP_REACH_NLRI(Multiprotocol Reachable NLRI, multi-protocols can reach NLRI) option to realize the encapsulation of VPN route, as shown in Figure 5, be MP_REACH_NLRI choice format.AFI(Address Family Identifier in MP_REACH_NLRI option, Address-Family Identifier) represent that address race adopts IPv4 address or IPv6, respectively by 1 or 0 mark; SAFI illustrates the connotation of every data in NLRI, such as, if when SAFI is 128, represent that in NLRI, the first row data are length, the second row data are label, if when SAFI is 127, represent that in NLRI, the first row data are length, the second row data are address prefix Prefix; NANH(NetworkAddress of Next Hop, next hop address) and NLRI in Prefix form the address of VPN, as shown in Figure 6, be the form of address.
In the embodiment of the present invention, VPN adopts IPv4 address, then the value of AFI is 1; Adopt the NLRI of not tape label, then SAFI is 127.
It should be noted that, when SAFI be 127 time, represent that the first row data are length in NLRI, the second row data are address prefix Prefix, conveniently the present embodiment is described and defines, if want practical application, need to normal structure application.
209, egress router sends the VPN route of encapsulation.
Wherein, the VPN routed encapsulation that egress router will send, in BGP, sends it to gateway.
Further, gateway, through VPN and BGP configuration, when receiving the VPN route that egress router sends, learns it.Gateway, to after VPN route learning, draws the address of the VPN in VPN route, and is added in corresponding VRF, then by the routing diffusion that receives to other equipment.When gateway receives the message that will forward, carry out a high position according to the destination address of message with VRF to mate, if the destination address of message is identical with the address prefix of the VPN in the VPN route receiving egress router transmission, represent that this message can be forwarded to corresponding destination address by egress router, then gateway forwards the packet to egress router.
It should be noted that, egress router and gateway need to carry out mutual routing diffusion, in the embodiment of the present invention, carry out routing diffusion for egress router to gateway, if gateway carries out routing diffusion to egress router, gateway is needed to perform the operating process of step 201 to step 209.
It should be noted that, the present invention, not only for routing diffusion between egress router and gateway, can also be used for the routing diffusion between other MCE and PE, MCE, such as, publicly-owned cloud data center gateway is connected with wide area network PE, the diffusion of VPN route between gateway and PE.
In prior art, when egress router carries out routing diffusion to gateway, carried out the diffusion of many VPN route by multiple IGP process or multiple bgp session.Carry out VPN and BGP configuration at egress router in the embodiment of the present invention, and the form of Network Layer Reachable Information NLRI is set; When carrying out VPN routing diffusion, be the form of the NLRI arranged by VPN routed encapsulation; The VPN route of encapsulation is sent by Border Gateway Protocol (BGP).Because adopt the NLRI form arranged to encapsulate VPN route, between egress router and gateway, the route of multiple VPN can be spread by a bgp session, reduce the consumption of CPU and memory source, dramatically reduce the CPU burden of MCE and PE.
Further embodiment of this invention provides a kind of device 30 of routing diffusion, and as shown in Figure 7, described device 30 comprises:
Setting unit 31, for arranging the form of Network Layer Reachable Information NLRI;
Encapsulation unit 32, for the form encapsulation VPN (virtual private network) VPN route according to described NLRI;
Transmitting element 33, for sending the described VPN route of encapsulation by Border Gateway Protocol (BGP).
Further, as shown in Figure 8, described encapsulation unit 32 comprises:
Subelement 321 is set, for the subsidiary Address-Family Identifier SAFI in described VPN route is set to preset value.
Further, as shown in Figure 8, described device 30 also comprises:
Dispensing unit 34, for carrying out VPN configuration;
Described dispensing unit 34 is also for carrying out BGP configuration.
Further, as shown in Figure 8, described dispensing unit 34 comprises:
Configuration subelement 341, for configuring VPN instance, described VPN instance and described VPN one_to_one corresponding;
Described configuration subelement 341 is also for being described VPN instance configuration Route Distinguisher RD and route target RT;
Described configuration subelement 341 is also IPv4 for configuring the address race of described VPN.
Further, as shown in Figure 8, described dispensing unit 34 comprises:
Specify subelement 342, be used to specify the VPN needing to be sent route by described BGP.
In prior art, be the diffusion being carried out many VPN route by multiple IGP process or multiple bgp session between MCE or between MCE and PE.The form of Network Layer Reachable Information NLRI is set in the embodiment of the present invention in device 30; When carrying out VPN routing diffusion, be the form of the NLRI arranged by VPN routed encapsulation; The VPN route of encapsulation is sent by Border Gateway Protocol (BGP).Because adopt the NLRI form arranged to encapsulate VPN route, between MCE or between MCE and PE, the route of multiple VPN can be spread by a bgp session, reduce the consumption of CPU and memory source, dramatically reduce the CPU burden of MCE and PE.
Further embodiment of this invention provides a kind of device 40 of routing diffusion, and as shown in Figure 9, described device 40 comprises:
Processor 41, for arranging the form of Network Layer Reachable Information NLRI; And, for the form encapsulation VPN (virtual private network) VPN route according to described NLRI;
Transmitter 42, for sending the described VPN route of encapsulation by Border Gateway Protocol (BGP).
Further, described processor 41 is also for being set to preset value by the subsidiary Address-Family Identifier SAFI in described VPN route.
Further, described processor 41 is also for carrying out VPN configuration; And, for carrying out BGP configuration.
Further, described processor 41 also for configuring VPN instance, described VPN instance and described VPN one_to_one corresponding; And, for being described VPN instance configuration Route Distinguisher RD and route target RT; And, be IPv4 for configuring the address race of described VPN.
Further, described processor 41 is also used to specify the VPN needing to be sent route by described BGP.
In prior art, be the diffusion being carried out many VPN route by multiple IGP process or multiple bgp session between MCE or between MCE and PE.The form of Network Layer Reachable Information NLRI is set in the embodiment of the present invention in device 40; When carrying out VPN routing diffusion, be the form of the NLRI arranged by VPN routed encapsulation; The VPN route of encapsulation is sent by Border Gateway Protocol (BGP).Because adopt the NLRI form arranged to encapsulate VPN route, between MCE or between MCE and PE, the route of multiple VPN can be spread by a bgp session, reduce the consumption of CPU and memory source, dramatically reduce the CPU burden of MCE and PE.
The device of the routing diffusion that the embodiment of the present invention provides can realize the above-mentioned embodiment of the method provided, and concrete function realizes the explanation referred in embodiment of the method, does not repeat them here.The method of the routing diffusion that the embodiment of the present invention provides and device go for the routing diffusion between MCE and PE or between MCE, but are not limited only to this.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.Especially, for apparatus embodiments, because it is substantially similar to embodiment of the method, so describe fairly simple, relevant part illustrates see the part of embodiment of the method.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a method for routing diffusion, is characterized in that, comprising:
The form of Network Layer Reachable Information NLRI is set;
According to the form encapsulation VPN (virtual private network) VPN route of described NLRI;
The described VPN route of encapsulation is sent by Border Gateway Protocol (BGP).
2. method according to claim 1, is characterized in that, the described encapsulation of the form according to described NLRI VPN (virtual private network) VPN route comprises:
Subsidiary Address-Family Identifier SAFI in described VPN route is set to preset value.
3. method according to claim 1, is characterized in that, before the described encapsulation of the form according to described NLRI VPN (virtual private network) VPN route, described method also comprises:
Carry out VPN configuration;
Carry out BGP configuration.
4. method according to claim 3, is characterized in that, described in carry out VPN configuration comprise:
Configuration VPN instance, described VPN instance and described VPN one_to_one corresponding;
For described VPN instance configuration Route Distinguisher RD and route target RT;
The address race configuring described VPN is IPv4.
5. method according to claim 3, is characterized in that, described in carry out BGP configuration comprise:
Specify the VPN needing to be sent route by described BGP.
6. a device for routing diffusion, is characterized in that, comprising:
Setting unit, for arranging the form of Network Layer Reachable Information NLRI;
Encapsulation unit, for the form encapsulation VPN (virtual private network) VPN route according to described NLRI;
Transmitting element, for sending the described VPN route of encapsulation by Border Gateway Protocol (BGP).
7. device according to claim 6, is characterized in that, described encapsulation unit comprises:
Subelement is set, for the subsidiary Address-Family Identifier SAFI in described VPN route is set to preset value.
8. device according to claim 6, is characterized in that, described device also comprises:
Dispensing unit, for carrying out VPN configuration;
Described dispensing unit is also for carrying out BGP configuration.
9. device according to claim 8, is characterized in that, described dispensing unit comprises:
Configuration subelement, for configuring VPN instance, described VPN instance and VPN one_to_one corresponding;
Described configuration subelement is also for being described VPN instance configuration Route Distinguisher RD and route target RT;
Described configuration subelement is also IPv4 for configuring the address race of described VPN.
10. device according to claim 8, is characterized in that, described dispensing unit comprises:
Specify subelement, be used to specify the VPN needing to be sent route by described BGP.
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| CN201310697935.5A CN104734929B (en) | 2013-12-18 | 2013-12-18 | The method and device of routing diffusion |
| PCT/CN2014/086336 WO2015090087A1 (en) | 2013-12-18 | 2014-09-12 | Routing diffusion method and device |
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| CN106411735B (en) * | 2016-10-18 | 2019-10-11 | 新华三技术有限公司 | A kind of method for configuring route and device |
| CN110875882A (en) * | 2018-08-30 | 2020-03-10 | 华为技术有限公司 | Communication method and communication device |
| CN110875882B (en) * | 2018-08-30 | 2021-07-20 | 华为技术有限公司 | Communication method and communication device |
| US11805049B2 (en) | 2018-08-30 | 2023-10-31 | Huawei Technologies Co., Ltd. | Communication method and communications device |
| CN114650248A (en) * | 2020-12-02 | 2022-06-21 | 中国电信股份有限公司 | Method and system for processing routing information and boundary router of autonomous system |
| CN114650248B (en) * | 2020-12-02 | 2023-07-18 | 中国电信股份有限公司 | Processing method and system of routing information and autonomous system boundary router |
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| Publication number | Publication date |
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| CN104734929B (en) | 2019-03-01 |
| WO2015090087A1 (en) | 2015-06-25 |
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