Method for implementing neighbor discovery of different link layer separated domain

Abstract

The invention relates to neighbor discovery realization method in different link layer isolation zoom. IPv6 address, link layer address, and binding relational table of the isolation zoom label valve are set in the router. The host computer of the isolation zoom is sent out the neighbor request information to search the hardware address of the other host computer. After the link layer access device is received the neighbor request information, the isolation zoom label valve is inserted to transfer the neighbor request information to the router. The router is enquired the binding relational table. If the purpose host computer and the host computer sent out the neighbor request information are in the different isolation zoom, the neighbor request information will answer on its own initiative, and the router own hardware address will be supplied to deceive the initiating terminal initiated the neighbor request to make the different isolation zoom host computer isolated by link layer access device can be normally communicated each other.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a neighbor discovery (ND) implementation method of different link layer isolation domains in an IPv6 (Internet Protocol Version 6) network. Background technique [0002] Neighbor Discovery (ND: Neighbor Discovery) mechanism is a basic protocol of IPv6 (Internet Protocol Version 6) network, which includes functions such as router discovery, prefix discovery, address resolution, neighbor unreachability detection, and redirection. Neighbor Discovery Protocol (hereinafter referred to as ND protocol) of IPv6 corresponds to ARP (Address Resolution Protocol) of IPv4 (Internet Protocol Version 4), router discovery and ICMP redirection in ICMP (Internet Control Message Protocol), in IPv4 There is no corresponding neighbor unreachable detection mechanism and protocol. These functions are implemented and extended in the ND protocol. The ND protocol solves the interoperability problem ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the deficiency that the existing neighbor discovery mechanism cannot send the neighbor request message to the link layer of the destination end of other isolated domains under the condition of link layer isolation, and provide a link layer isolation The implementation method of neighbor discovery in different circumstances, so that the hosts in different isolation domains can communicate normally

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