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Method, device and network device for selecting virtual link addresses

A virtual link and address technology, which is applied in the field of network equipment and virtual link address selection, can solve the problem that random virtual links cannot be established, and achieve the effect of overcoming randomness

Active Publication Date: 2012-11-21
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a virtual link address selection method, device and network equipment to solve the problem that the randomness of the existing virtual link address selection may cause the virtual link to be unable to be established

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  • Method, device and network device for selecting virtual link addresses
  • Method, device and network device for selecting virtual link addresses
  • Method, device and network device for selecting virtual link addresses

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Embodiment Construction

[0028] The specific implementation manners of a virtual link address selection method, device, and network device provided in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] A method for selecting a virtual link address provided by an embodiment of the present invention, such as figure 2 shown, including the following steps:

[0030] S201. Classify each interface address belonging to the global unicast address in the routing device into multiple set address types;

[0031] The set multiple address types in descending order of priority at least include: the interface address of the transmission area, the interface address of the non-transmission area with a prefix length less than 128 bits, and the interface address of the non-transmission area with a prefix length equal to 128 bits ;

[0032] S202. When configuring the virtual link, select the interface address of the address type with the high...

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Abstract

The invention discloses a method, device and network device for selecting virtual link addresses. The method comprises the following steps: classifying and assigning each interface address which belongs to global unicast addresses in a routing device to set multiple address types, wherein the multiple address types at least comprise the following addresses from high priority to low priority: an interface address of transit areas, an interface address with the prefix length less than 128 bits of non-transit areas and an interface address with the prefix length equal to 128 bits of the non-transit areas; and when a virtual link is configured, selecting the interface addresses with highest address type priority from each address type with the interface address as the virtual link addresses. According to the invention, the problem that the virtual links can not be built due to free selection of existing virtual link addresses can be solved.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a virtual link address selection method, device and network equipment. Background technique [0002] The Open Shortest Path First (Open Shortest Path First, OSPF) protocol restricts all non-backbone areas to be connected to the backbone area. However, due to topology design, it is sometimes impossible to ensure that each area is physically connected to the backbone area. To solve this problem, the OSPF protocol The concept of a virtual link is proposed, and a virtual link is configured between two Area Border Routers (ABR), so that it can pass through a set transmission area and establish a logical transmission channel. The devices at both ends of the virtual link exchange neighbor packet information through unicast packets, and these packets are forwarded by the devices in the transmission area, and finally reach the virtual neighbor device. [0003] Open Shortest Path Firs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/12H04L45/74
Inventor 李磊黄崇滨
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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