Neighbor discovery and link status detecting method applicable to broadcast link

Abstract

The invention discloses a neighbor discovery and link status detecting method applicable to broadcast link. The method comprises the step of performing protocol interaction through a multicast message; the protocol message includes neighbor advertisement, node information query, node information query response, neighbor list query and neighbor list query response; the detailed information of a neighbor can be learnt through the protocol, and various wired, wireless, point-to-point and broadcast links can be met; the protocol is small in cost and fast to respond. The method has the beneficial effects that the neighbor discovery and link status detecting of various links applies; the cost of link is small; the learnt neighbor MAC address is able to support unnumbered address communication of an Ethernet interface; the learnt neighbor information brings routing protocol transformation, topological description of network management devices and other application and use; the problem that the true on and off and one- and two-way status of the links interconnected through a link device, of switching nodes cannot be detected can be solved.

Description

technical field [0001] The invention relates to a neighbor discovery and link state detection method suitable for broadcast links. Background technique [0002] The interface of the switch node is gradually changed to an Ethernet interface. The traditional Ethernet interface only supports networking with numbered addresses, but cannot support networking with unnumbered addresses. When implementing networking with unnumbered addresses on Ethernet interfaces, the standard ARP protocol cannot Complete the learning of the gateway MAC address. [0003] When a satellite terminal or a radio station is used as a link device connected by a broadcast link, there are many nodes in the network and the link bandwidth is limited, so the routing protocol needs to be adaptively modified according to the specific link. [0004] When the switching nodes are interconnected through link devices, the Ethernet interface used can only detect the connection between the switching nodes and the link...

AI Technical Summary

Problems solved by technology

[0004] When the switching nodes are interconnected through link devices, the Ethernet interface used can only detect the connection between the switching nodes and the link device, but cannot detect the connection between switching nodes and the link unidirectional and bidirectional status.

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