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Message forwarding method and device

A message forwarding and message technology, which is applied in the field of network communication, can solve problems such as port and bandwidth waste, and achieve the effect of saving the number of loopback ports and the loopback port bandwidth

Active Publication Date: 2017-08-04
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a message forwarding method and device to solve the problem of port and bandwidth waste caused by the need to set two logical loopback ports for PE equipment in the existing multicast VPN implementation scheme

Method used

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

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Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.

[0030] See figure 1 , is a schematic flowchart of a message forwarding method provided by an embodiment of the present invention, wherein the message forwarding method can be applied to PE devices in a VPN network, such as figure 1 As shown, the message forwarding method may include the following steps:

[0031] Step 101. When a private network multicast packet is received, query forwarding entries according to the multicast IP header of the private network multicast packet.

[0032] In the embodiment of the present invention...

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Abstract

The invention provides a message forwarding method and device. The method comprises the steps of when private network multicast messages are received, searching forwarding table entries according to multicast IP (Internet Protocol) heads of the private network multicast messages; if the private network multicast messages have public network domain outcoming ports, packaging the private network multicast messages, carrying appointed identification information in the packaged messages and copying the messages to public loopback ports; when the messages looped back by the public loopback ports are received, judging whether the appointed identification information is carried in the messages or not; and if the appointed identification information is carried in the messages, searching the forwarding table entries for message forwarding according to external layer multicast IP heads of the messages, otherwise, unpackaging the messages, and searching the forwarding table entries for message forwarding according to the multicast IP heads of the unpackaged messages. Through application of the embodiment of the invention, the loopback port number and loopback port bandwidth of a PE (Provider Edge) device can be reduced.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a message forwarding method and device. Background technique [0002] Multicast VPN (Virtual Private Network, virtual private network) is a BGP (Border Gateway Protocol, Border Gateway Protocol) / MPLS (Multi-Protocol Label Switching, Multi-Protocol Label Switching) IP (Internet Protocol, Internet Protocol) VPN basis A technology that supports multicast services. This technology encapsulates private network multicast packets and transmits them through the multicast tunnels established between Sites to complete the transmission of multicast data between private networks. . [0003] Multicast VPN packet forwarding processing mainly includes two forms: [0004] 1. Encapsulation direction: Encapsulate a message with only a layer-1 multicast IP header into a message with a layer-2 multicast IP header, and forward it according to the table look-up of the outer layer mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/18H04L12/761H04L12/741H04L45/16H04L45/74
CPCH04L12/18H04L12/4641H04L45/16H04L45/745
Inventor 李华舟
Owner NEW H3C TECH CO LTD
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