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Message forwarding method, device and system

A message forwarding and message technology, applied in the field of communication

Inactive Publication Date: 2013-01-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention discloses a message forwarding method, device and system to solve cross-board link aggregation veneer / equipment or cascaded veneer / equipment Synchronization of MAC addresses

Method used

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  • Message forwarding method, device and system
  • Message forwarding method, device and system
  • Message forwarding method, device and system

Examples

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Embodiment Construction

[0040] The present invention will be clearly and completely described below in conjunction with the accompanying drawings:

[0041] The first embodiment of the present invention provides a message forwarding method, the method involves a first board and a second board, wherein the first board and the second board may belong to the same device or may belong to different For cascading devices, the first single board and the second single board can be aggregated or cascaded through the 802.3ad protocol. Specific steps such as figure 2 shown, including:

[0042] Step 200, after the first single board receives the message (Ethernet message or other Ethernet MAC frame), obtains the source MAC address from the message, queries the MAC address table according to the source MAC address, and executes step 205.

[0043] Step 205, if there is a record in the MAC address table and the corresponding port number is consistent with the input port number, then go to step 220; otherwise, lea...

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PUM

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Abstract

A packet forwarding method, a packet forwarding device, and a packet forwarding system are provided. The method includes: acquiring, by a first board, a source media access control (MAC) address and an input port number in a packet, and looking up a MAC address table according to the source MAC address; learning the source MAC address if no same entry is found; and looking up a forwarding policy table according to the input port number to acquire a forwarding policy, and sending the packet to a second board according to the forwarding policy, so that the second board learns the source MAC address to realize synchronization of MAC addresses. The synchronization of MAC addresses is realized by acquiring the forwarding policy without changing a current forwarding process or influencing an execution efficiency of a central processing unit (CPU).

Description

technical field [0001] The present invention relates to the communication field, in particular to a message forwarding method, device and system. Background technique [0002] According to the IEEE802.3 standard, in a standard Ethernet media access control MAC frame, there are destination MAC address and source MAC address, the length is 6 bytes, and the destination MAC address is used to identify the Ethernet frame to be sent to The physical device, the source MAC address is used to identify the physical device that sends the Ethernet frame. The first bit of the destination MAC address (the lowest bit of the first byte) indicates whether the destination MAC address is a unicast address or a multicast address, if it is 0, it means a unicast address; if it is 1, it means a multicast address ; If the bits of the destination MAC address are all 1, it means the broadcast MAC address, and the Ethernet MAC frame with the broadcast MAC address will be forwarded to all physical dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L29/12H04L45/74
CPCH04L49/00H04L49/354H04L12/462
Inventor 马书雷
Owner HUAWEI TECH CO LTD
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