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Method and device for detecting fault of internet protocol version 6 (IPv6) tunnel

A tunnel fault and detection method technology, applied in the field of communication, can solve the problems of inability to eliminate IPv6 tunnel faults in time, low efficiency, etc.

Active Publication Date: 2012-07-18
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0022] The embodiment of the present invention provides a method and device for fault detection of an IPv6 tunnel, which is used to solve the problem that the fault detection efficiency of the prior art is low and the fault of the IPv6 tunnel cannot be eliminated in time

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  • Method and device for detecting fault of internet protocol version 6 (IPv6) tunnel
  • Method and device for detecting fault of internet protocol version 6 (IPv6) tunnel
  • Method and device for detecting fault of internet protocol version 6 (IPv6) tunnel

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Embodiment Construction

[0054] In the current application scenarios of IPv6 tunnels, one of the main reasons for the failure of IPv6 tunnels is that the firewalls inside the edge routers at both ends of the IPv6 tunnels set a policy to intercept IPv4 packets encapsulated with IPv6 packets. When the firewall intercepts IPv4 packets encapsulated with IPv6 packets, after the edge router encapsulates the IPv6 packets into IPv4 packets, the firewall directly intercepts and discards the IPv4 packets, and the IPv4 packets are not blocked. Or, after the edge router receives the IPv4 message encapsulated with the IPv6 message, the firewall directly discards the IPv4 message, and the IPv4 message is not decapsulated and restored to an IPv6 message. Therefore, in the embodiment of the present invention, after the edge router encapsulates the received IPv6 message into an IPv4 message, it judges whether its own firewall intercepts the IPv4 message; The fault alarm information of the identification information is...

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Abstract

The invention discloses a method and a device for detecting fault of an internet protocol version 6 (IPv6) tunnel, which are used for solving the problem of low efficiency of fault detection in the prior art. The method comprises the following steps of: receiving an IPv6 message and packaging the IPv6 message into an internet protocol version 4 (IPv4) message by a first edge router in the IPv6 tunnel, then judging whether a firewall of the first edge router intercepts the IPv4 message, if so, determining that the IPv6 tunnel has the fault, generating fault alarm information carrying self identification information, and returning the fault alarm information to a transmitting end which transmits the IPv6 message. The edge router in the embodiment of the invention judges whether the IPv6 tunnel has the fault according to the fact that whether the firewall intercepts the IPv4 message packaged with the IPv6 message and returns the fault alarm information carrying the self identification information when the fault is determined, and the transmitting end can immediately position the fault equipment in the IPv6 tunnel according to the identification information in the fault alarm information, so that the fault detection efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and device for detecting an IPv6 tunnel fault. Background technique [0002] Tunnel technology refers to the technology of encapsulating packets of one protocol into packets of another protocol for transmission. The tunnel technology requires devices at both ends of the tunnel, that is, edge devices, to support the two protocols. Internet Protocol Version 6 (IPv6) tunnel technology realizes the use of existing Internet Protocol Version 4 (Internet Protocol Version 4, IPv4) network to provide connectivity for isolated IPv6 networks, and encapsulates IPv6 packets in IPv4 The message traverses the IPv4 network, so that two IPv6 networks can realize information exchange through the IPv4 network between them, so as to realize the transparent transmission of IPv6 messages. [0003] Figure 1A It is a schematic structural diagram of an IPv6 tunnel in the prior art. Suc...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L29/06H04L12/24
Inventor 彭晓军
Owner RUIJIE NETWORKS CO LTD
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