Device and method for realizing identity and locator separation network

摘要

Provided are a system and method for realizing an identifier and locator separation network based on Internet Protocol version 6 (IPv6). The method includes that: a network prefix assigned for a terminal is taken as a part of an IPv6 address of the terminal, and a subscriber Access Identifier (AID) assigned for the terminal is also taken as a part of the IPv6 address. With the above technical solution, the additional overhead, brought by creating tunnels and removing tunnels, of the identifier and locator separation network realized based on the network can be solved.

主权项

1. A method for realizing an identifier and locator separation network, comprising:
assigning a network prefix and an Access Identifier (AID) for a terminal when the terminal registers; assigning an IPv6 address for the terminal, wherein the network prefix assigned for the terminal is configured as a part of the IPv6 address, and the AID assigned for the terminal is configured as a part of the IPv6 address; when the terminal is a terminal which can perform an access service router (ASR) switching, the network prefix is configured as a fixed prefix; when the terminal is a terminal which cannot perform the ASR switching, the network prefix is configured as a fixed prefix or a Routing identifier (RID) assigned by the ASR; when an IPv6 address assigned for a source terminal is the RID of the terminal added with the AID of the terminal, the source IPv6 address used when the source terminal sends a data packet is configured as the RID added with the AID of the terminal; after receiving the data packet sent by the terminal, the ASR to which the source terminal belongs directly forwards the data packet to an internet service router (ISR) or an ASR to which a destination terminal belongs; and after receiving the data packet which is returned to the source terminal, the ASR to which the source terminal belongs directly forwards the data packet to the source terminal; when an IPv6 address assigned for a source terminal is the fixed prefix added with the AID of the terminal, the source IPv6 address used when the source terminal sends a data packet is configured as the fixed prefix added with the AID of the terminal; after receiving the data packet sent by the terminal, the ASR to which the source terminal belongs replaces the fixed prefix in the source IPv6 address with the RID and then forwards the data packet to the ISR or an ASR to which a destination terminal belongs; and after receiving the data packet which is returned to the source terminal, the ASR to which the source terminal belongs replaces the RID in the IPv6 address with the fixed prefix and then forwards the data packet to the source terminal.