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A message forwarding method and device

A packet forwarding and packet technology, applied in the network field, can solve problems such as interruption of flow, packet loss, affecting the stability and continuity of downstream services, and achieve the effect of avoiding instantaneous interruption of flow.

Active Publication Date: 2017-12-08
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the paths taken by some traffic are not faulty, due to the recalculation of the ECMP algorithm, the outbound port of the traffic has been changed. For the destination device of the equal-cost route, there will be instantaneous traffic interruption or even packet loss. Affect the stability and continuity of downstream business

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  • A message forwarding method and device
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Embodiment Construction

[0034] In order to make the technical solutions provided by the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0035] In view of the defects in the prior art, a message forwarding method and device are proposed. The present invention realizes the load sharing of the flow based on the equal-cost route through the port state table and the hash mapping table. In the event of a failure, the traffic on the non-failed equal-cost route will not change the outgoing port through a predetermined algorithm, and when the link of the equal-cost route is restored, the traffic will be restored to the original equal-cost path .

[0036] figure 1 A flow chart of the steps of the message forwarding method provided by an embodiment of the present invention, the method is applied to a message forwarding device, the message forwarding device may be a routing device or a switching device with...

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Abstract

The invention discloses a method and device for message forwarding. Through the invention, when the link of a certain equivalent route fails, the outgoing port of the normal equal-cost route can be kept unchanged, and the normal outgoing port can be used to replace the faulty one. out port. When the link corresponding to the equal-cost route is restored, the outgoing port on the original normal link is also kept unchanged, and the corresponding relationship between the restored link and the outgoing port is restored to the original state. In this way, the traffic on the normal equal-cost route is prevented from being interrupted due to the port recalculation, and the traffic can be restored to the original forwarding path.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a message forwarding method and device. Background technique [0002] With the advent of the big data era, users have higher and higher requirements for data stability. In order to avoid interruption and adverse impact on customer services due to link interruption, an Equal Cost Multipath (ECMP) routing technology emerges as the times require. [0003] Multiple paths to the same destination address and with the same path cost constitute an equivalent path. For the next hop corresponding to each equal-cost path, when the packet forwarding device forwards the packet to the destination address, it will Load sharing is implemented between one-hop paths. Through a specific ECMP algorithm, it is evenly distributed to different outbound ports according to the specific parameters of the traffic. In this case, after a link of an equal-cost path is interrupted, the traffic can be forwa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/703H04L12/743H04L45/28
Inventor 李捷张雷
Owner NEW H3C TECH CO LTD