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A message forwarding method and device

A message forwarding and message technology, applied in the field of network communication, can solve problems such as loops, avoid loops, reduce the probability of loops, and improve reliability.

Active Publication Date: 2021-09-21
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a message forwarding method and device to solve the problem of a loop caused by a link failure between an access device and a server in a data center network

Method used

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  • A message forwarding method and device
  • A message forwarding method and device
  • A message forwarding method and device

Examples

Experimental program
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Embodiment 1

[0071] See image 3 , is a schematic diagram of the architecture of a specific application scenario provided by the embodiment of the present invention, such as image 3 As shown, in this application scenario, the access device R2 and the access device R3 are interconnected with the server R4 through non-stack aggregation, and a static GRE tunnel (hereinafter referred to as the tunnel) is established between R2 and R3. The tunnel interface on R2 is tunnel interface 21, and the tunnel interface on R3 is tunnel interface 31; the aggregation switch R1 establishes routing neighbors (such as BGP neighbors) with R2 and R3 respectively, and R1-R2-R4 and R1-R3-R4 form equivalent path.

[0072] based on image 3 In the application scenario shown, taking the message forwarding process of R2 as an example, the process of the message forwarding method provided by the embodiment of the present invention can be as follows Figure 4 As shown, it may include the following steps:

[0073] ...

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Abstract

The present invention provides a message forwarding method and device. The method includes: for a Layer 3 message without tunnel encapsulation, when a target Layer 3 forwarding entry matching the Layer 3 message is found, the The target three-layer forwarding entry judges whether the next-hop outgoing interface of the three-layer message is the same as the incoming interface of the three-layer message; if they are the same, the next-hop outgoing interface of the three-layer message is modified to target tunnel interface, and perform tunnel encapsulation on the layer-3 message; forward the layer-3 message after tunnel encapsulation through the target tunnel interface; if different, exit through the next hop of the layer-3 message The interface forwards the Layer 3 packet. The application of the embodiments of the present invention can reduce the probability of loops in the data center networking and improve the reliability of the array center networking.

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] With the enhancement of server capabilities and bandwidth, some new technology applications have appeared in the data center computer room, such as cross-device stacking and high-bandwidth dual network cards. [0003] by figure 1 The shown networking is taken as an example, and the access devices (R2 and R3) and the server (R4) are interconnected through dual network cards and non-stack aggregation to form an asynchronous mutual backup link. The server uses a host address to establish direct links with multiple (two in the figure as an example) access devices to form the same ARP (Address Resolution Protocol, Address Resolution Protocol) entry, and publish the same host routing. For the aggregation switch (R1), R1-R2-R4 and R1-R3-R4 form an equal-cost path, and packets from R1 to R4 will be sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/709H04L12/723H04L12/741H04L29/12H04L45/243H04L45/50H04L45/74
CPCH04L45/245H04L45/50H04L45/745H04L61/2592
Inventor 郭振华况伟宋高
Owner NEW H3C TECH CO LTD
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