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Method and equipment for releasing Internet protocol (IP)v6 address

An implementation method and ipv6 address technology, applied in the network field, can solve problems such as address waste, and achieve the effect of solving address waste and improving address use efficiency

Active Publication Date: 2012-10-24
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention provides a method and device for releasing IPv6 addresses, so as to solve the problem of address waste in the process of client applying for IPv6 addresses through fast address allocation and confirm messages when there are multiple servers in the network

Method used

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  • Method and equipment for releasing Internet protocol (IP)v6 address
  • Method and equipment for releasing Internet protocol (IP)v6 address
  • Method and equipment for releasing Internet protocol (IP)v6 address

Examples

Experimental program
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Embodiment 1

[0035] figure 2 It is a flow chart of a method for releasing an IPv6 address in Embodiment 1 of the present invention, and the method can be applied in DHCPv6 technology. Such as figure 2 As shown, the method includes the following steps:

[0036] Step S202, recording the information in the IPv6 address application message and the response message exchanged between the DHCPv6 client and the DHCPv6 server during the IPv6 address application process;

[0037] During the process of the DHCPv6 client applying for an IPv6 address through the rapid address allocation method, the DHCPv6 client and the DHCPv6 server will exchange solicit messages and reply messages carrying the rapid commit option. For details, please refer to the background technology section, and will not repeat them here . Similarly, in the process of the DHCPv6 client applying for an IPv6 address through the confirm message, the DHCPv6 client and the DHCPv6 server will also interact to determine whether the I...

Embodiment 2

[0057] In the application of DHCP, for security reasons, DHCP snooping is often deployed on the data forwarding device responsible for forwarding packets between the client and the server, such as a switch, that is, the DHCP snooping function is enabled on the data forwarding device. When DHCP snooping is enabled on the data forwarding device, it will listen (or listen) to all DHCP messages, and can extract and record information such as IP addresses and MAC addresses from received DHCP messages. In addition, DHCP snooping allows a physical port to be set as a trusted port or an untrusted port. Trusted ports can normally receive and forward DHCP packets, while untrusted ports discard received DHCP packets. In this way, the shielding effect of the data forwarding device on the fake DHCP server can be completed, ensuring that the client obtains an IP address from a legitimate DHCP server.

[0058] In the embodiment of the present invention, DHCP snooping can be used to monitor ...

Embodiment 3

[0070] For the methods of the first and second embodiments above, the third embodiment of the present invention provides a data forwarding device, which can execute the methods in the first and second embodiments, and the data forwarding device can be located between the DHCPv6 client and the DHCPv6 server Between, forward the data packets exchanged between the two. Such as Figure 6 As shown, the device includes the following modules: a record module 102, an acquisition module 104, a determination module 106 and a notification module 108, wherein:

[0071] Recording module 102, for recording the information in the IPv6 address application message and the response message thereof interacted between the DHCPv6 client and the DHCPv6 server;

[0072] Wherein, the IPv6 address application message can be: the request solicit message that the DHCPv6 client sends to the DHCPv6 server to carry the rapid commit option, and the response message is: the reply reply message that the DHCP...

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Abstract

The invention discloses a method and equipment for releasing an Internet protocol (IP)v6 address. The method comprises the following steps of: recording an IPv6 address applying message interacted between a dynamic host configuration protocol (DHCP)v6 client and a DHCPv6 server and information in a response message; acquiring an identifier of the DHCPv6 server selected by the DHCPv6 client; determining a non-selected DHCPv6 server according to the recorded information and the acquired identifier of the DHCPv6 server selected by the DHCPv6 client; and informing the non-selected DHCPv6 server of releasing the IPv6 address distributed by the DHCPv6 client. By the method and the equipment, the problem of waste of addresses caused by processes of quick DHCPv6 address distribution and address application by a confirm message is solved.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a method and equipment for releasing IPv6 addresses. Background technique [0002] With the continuous expansion of the network scale and the continuous improvement of the network complexity, the network configuration has become more and more complicated. When the computer often moves (such as a laptop or a wireless network) and the number of computers exceeds the assignable IP (Internet Protocol, Internet Protocol) address, etc., in order to facilitate users to quickly access and exit the network, improve the utilization of IP address resources, an automatic IP address allocation mechanism - DHCP (Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) Came into being. DHCP adopts a client / server communication mode. All IP network configuration parameters are centrally managed by the DHCP server, which is responsible for processing the client's DHCP request;...

Claims

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Application Information

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IPC IPC(8): H04L29/12
Inventor 潘芳
Owner NEW H3C TECH CO LTD
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