Method for switching message of switching network, switching system, routing line card and Ether line card

A message switching, Ethernet card technology, applied in data switching networks, transmission systems, data exchange details, etc., can solve the problems of port 1 output buffer packet loss, mutual influence, and occupying other port output buffers.

Active Publication Date: 2008-11-12
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, the port 1 will receive 9G+10G traffic at the same time, and the egress bandwidth is only 10G. At this time, congestion occurs, causing the output buffer of port 1 to overflow and packet loss
At this time, because the output buffer of port 1 is not enough, it may occupy the output buffer of other ports
[0009] It can be seen that in the prior art, due to the sharing of the output buffer, the two switching planes will affect each other during the switching process, so it has not really been realized that a switching device simultaneously Has 2 switching planes

Method used

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  • Method for switching message of switching network, switching system, routing line card and Ether line card
  • Method for switching message of switching network, switching system, routing line card and Ether line card
  • Method for switching message of switching network, switching system, routing line card and Ether line card

Examples

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Embodiment 1

[0086] Figure 4 It shows a schematic diagram of a process in which the routing line card sends a message to the routing line card and the Ethernet line card, and the Ethernet line card sends a message to the routing line card and the Ethernet line card. In this example, for Figure 4 The process of sending a message from the routing line card to the routing line card and the Ethernet line card is described in detail. Figure 4 LC0 and LC1 are routing line cards, and LC2 and LC3 are Ethernet line cards. The thin dotted line with a single arrow indicates the message flow direction of the message sent from LC0 to LC1, and the thin solid line with a single arrow indicates the message flow direction of the message sent from LC0 to LC2.

[0087] First, the processing flow of the LCO in this embodiment will be described. Figure 5 It shows the processing flowchart of routing line card LC0 sending a message to the packet switching chip in Embodiment 1 of the present invention, as ...

Embodiment 2

[0144] This example is for Figure 4 The process of sending a message from the shown Ethernet line card to the routing line card and the Ethernet line card is described. Same as the first embodiment, the destination line card in this embodiment is still the routing line card LC1 and the Ethernet line card LC2, the difference is that the source line card in this embodiment is the Ethernet line card LC3. A thick dashed line with a single arrow indicates the message flow direction of the message sent from LC3 to LC2, and a thick solid line with a single arrow indicates the message flow direction of the message sent from LC3 to LC1.

[0145] In this embodiment, the allocation of the internal cache of the packet switching chip is the same as that in Embodiment 1.

[0146] Figure 9 It shows the processing flowchart of sending a message from the Ethernet line card LC3 to the packet switching chip in the second embodiment of the present invention. Such as Figure 9 As shown, the ...

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Abstract

The invention discloses a message exchange method for a switching network, which comprises that according to the type of an accessible line card of an exchange device, each line card is provided with an exchange plane with an independent plane cache in the exchange device; the exchange device receives the message with the type being different from a source line card of the line card and a target line card and then exchanges the message to a plane conversion device; the plane conversion device sends the received message to an exchange device and the exchange plane corresponding to the type of the target line card, and then the message is sent to the corresponding target line card through the exchange plane. The invention discloses an exchange system, a routing line card and an aether line card. The message exchange method of the invention can be used for realizing a plurality of exchange planes in one exchange device.

Description

technical field [0001] The invention relates to switching network technology, in particular to a message switching method applied to a switching network, a switching system, a routing line card and an Ethernet line card. Background technique [0002] In order to expand port density, currently switching devices such as routers and switches usually adopt a modular system structure. The modular system structure includes a switching fabric backplane and multiple line cards plugged into the switching fabric backplane. Multiple line cards exchange packets through the switching network provided by the switching network backplane. It can be seen that the switching network is the core part for completing packet exchange between line cards. [0003] The switching network of a modular Ethernet switch is called an Ethernet switching plane. The Ethernet switching plane is a switching plane that prioritizes switching efficiency and allows packet loss to avoid congestion and affect subs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/02H04L12/70
Inventor 余昌刚
Owner NEW H3C TECH CO LTD
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