Stateful IPv6 address generation method and device

Abstract

The embodiment of the invention discloses a stateful IPv6 address generation method and device. The method comprises the following steps: receiving an RS (Router Solicitation) request message sent bya host of an access network through an aggregate switch; encapsulating an IPv6 address prefix with state information in a stateful prefix information option (SPIO) of a second RA (Router Advertisement) message, and recording corresponding state information; and sending the second RA message to the host in a unicast or broadcast way, so that the host acquires an IPv6 address prefix with state information from the SPIO of the second RA message, and generates a globally unique IPv6 unicast address according to the acquired IPv6 address prefix with the state information. Through adoption of the method in the embodiment of the invention, the problem of inconvenience caused by automatic allocation of an IPv6 stateless address to network management is solved. Through extension of an option fieldof the RA message and adding of the IPv6 address state information to a stateless SLAAC (Stateless Address Autoconfiguration) address allocation mode, network access users can be managed more safely and effectively.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of the Internet, in particular to a method and device for generating a stateful IPv6 address. Background technique [0002] With the increasing development of the Internet, the number of various networked devices is increasing day by day, and the original 32-bit IP (interconnection protocol between networks) addresses are gradually exhausted, which can no longer meet the needs of Internet users. The IPv6 (Internet Protocol Version 6) protocol extends the length of the IP address to 128 bits, which can effectively meet the current and future networking needs of users and devices. There are mainly two existing IPv6 address allocation methods: DHCPv6 and SLAAC (stateless address automatic configuration). DHCPv6 is a stateful address allocation method, and the DHCP (Dynamic Host Configuration Protocol) server maintains the state information of each assigned IP address; SLAAC is a state...

AI Technical Summary

Problems solved by technology

However, for reasons such as simple operation, some mainstream operating systems (such as Android system) currently only support obtaining IPv6 addresses in the form of SLAAC, and do not support dynamic allocation of stateful addresses in the form of DHCPv6, which has great impact on network management. It is very inconvenient, and it also poses a certain threat to network security.

[0004] In view of this, how to solve the inconvenience caused by the automatic allocation of IPv6 stateless addresses to network management has become a technical problem that needs to be solved at present

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