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Packet forward method, device and its uplink interface board

A message forwarding and interface board technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as inconsistencies in forwarding paths, achieve the effects of improving forwarding performance, improving business processing performance, and reducing equipment resource consumption

Active Publication Date: 2008-09-17
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the packet to be forwarded hits the flow classification operation and is a service packet to be forwarded to the service board, then, after the uplink interface board performs a source address-based route search on the service packet, the service board performs a destination-based Address route lookup, at this time, the forwarding paths determined by the uplink interface board and the service board may be different, resulting in inconsistent forwarding paths

Method used

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  • Packet forward method, device and its uplink interface board
  • Packet forward method, device and its uplink interface board
  • Packet forward method, device and its uplink interface board

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0052] This embodiment still uses figure 1 The basic structure of the packet forwarding device shown is used as the packet forwarding device in the first embodiment. The device includes an uplink interface board, a service board and a downlink interface board. The switching network is used to exchange information among the boards. The service board can be realized by an interface board with extended service processing function, or the service processing function can be extended on the main control board with switching network interface, so as to realize the service board function.

[0053] Usually, when packets are exchanged between interface boards through the switching network, a switching information header needs to be encapsulated in front of the packets. This switching information header indicates which switching node the switching network sends the packet to, and is the switching basis of the switching network. There will be some free information fields in the switchin...

Embodiment 2

[0112] This embodiment adopts Figure 9 The structure of the packet forwarding device shown. Such as Figure 9 As shown, the device includes an uplink interface board, a service board, and a downlink interface board. Wherein, the information exchange between the uplink interface board and the downlink interface board is realized through the switching network. The service board is not implemented by a board card with a switching network adapter unit, but is implemented by a service processing chip. The service processing chip can be set on the main control board, or the function of the service board can also be directly realized by the CPU on the main control board.

[0113] The difference from Embodiment 1 is mainly reflected in the information transmission channels between the service board and the uplink interface board and downlink interface board, Figure 9 It is shown with a thick solid line with an arrow. In the second embodiment, the service board is connected to t...

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Abstract

The invention discloses a message transferring method, comprising the steps of: an up interface plate continues to process up message when judging that present processed message is a service message of transferring service plate, sending the service message completing message up process to the service plate; the service plate processes service for the service message, sending the service message after service process to a down interface plate for down process. The invention further provides a message transferring device and the up interface plate in the device.

Description

technical field [0001] The invention relates to message forwarding technology, in particular to a message forwarding method, a message forwarding device, and an uplink interface board in the message forwarding device. Background technique [0002] Currently, in order to improve packet forwarding performance, high-end packet forwarding devices, such as high-performance switches and routers, adopt a distributed structure. The message forwarding device with a distributed structure includes multiple interface boards. Each interface board is plugged into the slot provided by the device chassis. Each board has a processor and can independently complete basic forwarding and business processing functions. Different interfaces Boards can communicate over a switched fabric. In a packet forwarding device with a distributed structure, the forwarding process is divided into an uplink process and a downlink process. Among them, the uplink interface board processes the uplink process, ex...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L12/931
Inventor 卢胜文
Owner NEW H3C TECH CO LTD
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