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Client information verification method based on DHCPv6 relay and device thereof

A technology of client and relay equipment, applied in the field of communication, can solve the problem of inability to obtain IPv6 address/prefix lease etc.

Active Publication Date: 2010-10-27
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present invention provides a DHCPv6 relay-based client information confirmation method and its device, which are used to solve the problem that in the prior art, the client cannot obtain IPv6 during the process of initiating a request to confirm whether the client network configuration information is valid. Issues with address / prefix leases

Method used

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  • Client information verification method based on DHCPv6 relay and device thereof
  • Client information verification method based on DHCPv6 relay and device thereof
  • Client information verification method based on DHCPv6 relay and device thereof

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Embodiment Construction

[0062] For the above scenario where the client has a link change and needs to exchange CONFIRM / REPLY messages to ensure that its network configuration information can work normally in the new network, the client can re-initiate the IPv6 address application process according to the existing DHCPv6 protocol . However, if the client re-applies for an address, the server may assign another IPv6 address or prefix to the client, which is different from the IPv6 address or prefix used by the client, which will cause some application services of the client to be interrupted.

[0063] In order to make the client use the original IPv6 address or prefix, the client can use the original IPv6 address or prefix to send a RENEW or REBIND message. After receiving the REPLY message from the server, the client can directly use the relevant IPv6 address or prefix. However, according to the description of the client link state change in the existing DHCP protocol, it is stipulated that a CONFIRM...

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Abstract

The invention discloses a client information verification method based on a DHCPv6 relay, which is applied in a communication system with the DHCPv6 relay, a client and a server. The method comprises the following steps that: the DHCPv6 relay receives a message transmitted by the client for request of confirming whether the IPv6 address / prefix of the client continues to be effective, converts the message into a message for request of obtaining lease information of the client, and transmitting the obtained massage to the server; and the DHCPv6 relay receives a response message transmitted back by a server, and transmits the response message to the client after adding the message confirming whether the IPv6 address / prefix of the client continues to be effective. The invention solves the problem of the prior art that the client can not obtain the lease information of the IPv6 address / prefix while transmitting the CONFIRM message, and also satisfies requirements of the specification of the DHCPv6 protocol that the CONFIRM / REPLY message is needed to carry out interaction when the link state of the client is changed.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for confirming client information based on DHCPv6 relay. Background technique [0002] DHCPv6 (Dynamic Host Configuration Protocol for IPv6, a dynamic host configuration protocol that supports IPv6) is an IPv6-based DHCP protocol that relies on client / server mode to manage device configuration. Like the DHCPv4 (DHCP for IPv4, IPv4-based DHCP) protocol, it can not only assign IPv6 addresses to devices, but also assign other configuration information to devices. [0003] Different from DHCPv4, DHCPv6 provides three allocation methods, including stateless allocation, stateful address allocation, and prefix allocation. Among them, stateless allocation can allocate other configuration options except IPv6 addresses or prefixes, stateful address allocation can allocate IPv6 addresses and other configuration options, and prefix allocation can allocate ...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/12
Inventor 申彦昌林涛
Owner NEW H3C TECH CO LTD
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