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Method and device for forwarding message based on multilink

A message forwarding and multi-link technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of high link cost, waste of link resources, low link cost, etc., and improve resource utilization , to achieve link protection, to achieve the effect of load sharing

Inactive Publication Date: 2007-12-26
NEW H3C TECH CO LTD
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Problems solved by technology

However, since links with better physical characteristics have higher costs and links with poorer physical characteristics have lower costs, if links with different physical characteristics cannot be selected as equivalent Links with different low costs are used as multiple equal-cost links, so link costs cannot be reduced
[0010] Moreover, although the above solution can realize link backup when the Cost values ​​or MED values ​​of the links are different, and realize load sharing when the Cost values ​​or MED values ​​of the links are the same, it cannot realize load sharing and link backup at the same time. backup
If only a small number of links with high Cost or MED values ​​are used as backup links, many other backup links may be idle, resulting in a waste of link resources.
[0011] It can be seen that in the existing multi-link-based routing scheme, the link cost cannot be reduced, and the utilization rate of link resources is not high

Method used

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  • Method and device for forwarding message based on multilink
  • Method and device for forwarding message based on multilink

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Embodiment Construction

[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0043] In the present invention, load sharing and link backup are not directly set according to the value of Cost or MED, but the traffic forwarding ratios of the outbound interfaces corresponding to multiple links are respectively determined, and the multiple traffic forwarding ratios are determined according to the determined traffic forwarding ratios. A packet to be sent is output through the corresponding outbound interface.

[0044] FIG. 1 is an exemplary flow chart of a multi-link-based message forwarding method in the present invention. As shown in Figure 1, the message forwarding method based on multi-link among the present invention, comprises the following steps:

[0045] Step 101, according to the physical characteristics of links correspond...

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Abstract

The method comprises: pre-determining the traffic forwarding ratio of output interface corresponding to different link; according to the traffic forwarding ratio, outputting all messages via the corresponding output interface; due to different traffic forwarding ratios of output interfaces corresponding to different links, the different links can load different traffics while realizing the load balance and link protection such that the links with different physical properties can selected to be as equivalent chain.

Description

technical field [0001] The invention relates to routing technology, in particular to a multi-link-based message forwarding method and a multi-link-based message forwarding device. Background technique [0002] Load Sharing and Link Backup are two important technologies in traffic forwarding, which can respectively realize resource sharing and link protection in the process of traffic forwarding. [0003] Taking two edge routing devices as an example, it is assumed that the two edge routing devices are routing device A and routing device B respectively, and routing device A and routing device B are connected by at least two links. According to the following method, set the consumption (Cost) value or multi-exit distinguishing symbol (MED) value corresponding to at least two links in routing device A and routing device B, respectively, to realize load sharing and link backup: [0004] If the Cost value or MED value corresponding to each link is set to a different value, all p...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/04H04L47/20H04L69/14
Inventor 程锋章
Owner NEW H3C TECH CO LTD
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