A method and device for establishing neighbor relationship based on ospf protocol

Abstract

The invention provides a method and device for setting up neighborhood on the basis of an OSPF protocol. The method and the device are applied to a network device supporting the OSPF protocol. The method includes the steps that a neighbor announcement message is sent to an opposite terminal device through an OSPF interface, wherein the neighbor announcement message carries a preset mark used for marking the type of the OSPF interface through which the neighbor announcement message is sent; the neighbor announcement message from the opposite terminal device is received, interface type matching check is conducted according to the preset mark carried in the received neighbor announcement message, and the neighborhood is continued to be set up between the device and the opposite terminal device according to the protocol and neighborhood maintenance is conducted when the type of the interface marked with the preset mark carried by the neighbor announcement message is checked out to be the same as the type of the interface, through which the neighbor announcement message is received, of the device. By means of the method and the device, setting up and maintenance of ineffective neighborhood can be limited.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and a device for establishing a neighbor relationship based on the OSPF protocol. Background technique [0002] OSPFv3 (Open Shortest Path First version 3, open shortest path first version 3) is a link state-based autonomous system internal routing protocol developed by IETF (Internet Engineering Task Force, Internet Engineering Task Force). The working mechanism of the protocol is that each The neighbor relationship is established and maintained between devices by periodically advertising Hello packets, and the LSA (LinkState Advertisement, Link State Advertisement, Link State Advertisement) describing the link state is diffused between the devices forming the adjacency relationship, and each device finally forms the same LSDB (Link State Data Base, link state database), based on LSDB, routing calculation is performed to generate routing information and save it in...

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Problems solved by technology

[0003] See figure 1 , the OSPFv3 protocol sends hello packets on the interface to establish and maintain the neighbors of adjacent devices, and to synchronize the LSDB. The hello contains the configuration parameters of the current interface, area information, and protocol router-id. However, the The hello packet does not carry information such as the interface type, so interfaces of different types can also exchange packets and establish neighbor relationships, resulting in the establishment and maintenance of invalid neighbors.

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