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Message forwarding method and network device

A technology for message forwarding and network equipment, which is applied in the field of data communication and can solve problems such as high resource consumption

Active Publication Date: 2019-02-19
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the tunnel transition technology that uses MPLS LSP to connect IPv6 islands has been realized, but the existing technical solution consumes more resources

Method used

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  • Message forwarding method and network device
  • Message forwarding method and network device
  • Message forwarding method and network device

Examples

Experimental program
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Embodiment Construction

[0065] 6PE is currently the mainstream technology for implementing the transition from IPv4 to IPv6 based on MPLS LSP tunnels. figure 1 Shows a topology diagram of a network that can be used in the 6PE technical solution, refer to figure 1 , the IPv4 backbone network supports MPLS at the same time, the core device (Provider, P router in the figure) in the backbone network does not perceive the existence of the IPv6 network, and the edge device (ProviderEdge, 6PE router in the figure) on the network side is located in the IPv4 network and IPv6 The edge of the network supports IPv4 / IPv6 dual protocol stacks at the same time. The user-side device (Customer Provider, CE router in the figure) is located in an IPv6 isolated island and supports the IPv6 protocol. The CE router is connected to the IPv6-supporting interface on the 6PE router.

[0066] 6PE utilizes the technical principle of Border Gateway Protocol / MPLS Virtual Private Network (BGP / MPLS VPN for short), regards IPv6 isla...

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Abstract

The invention relates to the technical field of data communication, and provides a message forwarding method and a network device. The message forwarding method comprises the following steps of: receiving the IPv6 message sent by the source device in a source IPv6 island to the target device in a target IPv6 island; inquiring the routing exit interface corresponding to the IPv6 message from the IPv6 routing table of a source LER; determining the actual exit interface and the exit tag when the IPv6 message is forwarded to the next-hop LSR in an MPLS TE tunnel according to a tunnel interface; sequentially pressing the IPv6 explicit empty tag and the exit tag before the head of the IPv6 message; and forwarding the tag-pressed IPv6 message to the next-hop LSR through the actual exit interface.According to the message forwarding method, the tag resource consumption, and the protocol deployment difficulty and workload are small, and the workload of a source LER is reduced; and the improvement point of the method is centralized on the source LER, so that the system upgrading difficulty is small.

Description

technical field [0001] The present invention relates to the technical field of data communication, in particular, to a message forwarding method and network equipment. Background technique [0002] At present, the IPv6 protocol has not been deployed and commercialized on a large scale, and the IP network is still dominated by the IPv4 protocol, and the networks using IPv4 and IPv6 will inevitably coexist for a period of time. During this transition period, the problem of "IPv6 islands" will arise, that is, a small number of IPv6-using networks will be isolated from a large number of IPv4-using networks, just like isolated islands on the sea. At present, the main way to solve the "IPv6 island" problem is to use the tunnel strategy: the so-called tunnel is to use one protocol to transmit the data technology of another protocol, and transmit the message of another protocol in the form of one protocol at the entrance of the tunnel. Carry out encapsulation and transmission, and ...

Claims

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Application Information

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IPC IPC(8): H04L29/12
CPCH04L61/2592
Inventor 秦川
Owner MAIPU COMM TECH CO LTD