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MAC address table ageing, operation method and process system thereof

A technology of MAC address table and table entry, applied in the field of telecommunication, can solve problems such as non-compliance with switching and forwarding requirements, aging of MAC address table, etc.

Inactive Publication Date: 2007-10-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of MAC address table aging, operation method and processing system thereof, to make up for the defect that the TCAM chip aging processing method in the prior art does not meet the requirements of switching and forwarding in practical applications

Method used

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  • MAC address table ageing, operation method and process system thereof
  • MAC address table ageing, operation method and process system thereof
  • MAC address table ageing, operation method and process system thereof

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Embodiment 1

[0053] According to Fig. 1, the application system of the present embodiment comprises TCAM chip 1 and forwarding chip 3, has aging function module 11 and MAC address table 12 in described TCAM chip 1, comprises two databases 13,14 in this TCAM chip 1, One of them is an aging database 13, and the other is a non-aging database 14. The aging database 13 and the non-aging database 14 contain aging bit data, and the aging database 13 and the non-aging database 14 are respectively arranged in the configuration register of the TCAM chip. The configuration register corresponding to the aging database 13 is set to enable the aging bit, and the configuration register corresponding to the non-aging database 14 is set to disable the aging bit, and the aging function module 11 can only directly operate the aging bit data in the aging database. Instead, the aging bit data in the non-aging database 14 cannot be directly manipulated.

[0054]The aging database 13 and the non-aging database 1...

Embodiment 2

[0079] As shown in Figure 4, the main difference between the present embodiment and the present embodiment is that in this embodiment, the aging database 13 and the non-aging database 14 are respectively associated with the MAC address table 121 and the MAC address table 122, and the system It also includes an agent module 2, the agent module 2 obtains the update information of the MAC address table 121 corresponding to the aging database 13 according to the address learning notification or the aging notification, and correspondingly updates the MAC address table 122 corresponding to the non-aging database 14, so that the MAC address The table 121 and the MAC address table 122 are the same in content, and when the forwarding chip 3 learns the source MAC address or the aging function module 11 performs the aging operation, it sends an address learning notice or an aging notice to the proxy module 2 respectively.

[0080] As shown in Figure 4 and Figure 5, the basic control flow ...

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Abstract

This invention relates to an ageing and operation method and a process system for MAC address list, in which, the ageing method includes: A, setting two databases including ageing bits in a TCAM chip, an ageing functional module can operate data in one database only, which is the ageing one the other is non-ageing one, B, the ageing functional module operates the ageing bit data of the ageable database relatively and the address list operation method includes: in the study of the source MAC address, related process is done by the ageable database and data in it are renovated if the item in the MAC address list is hit, if a new item is inserted, then data of the ageable database and the MAC address list are initialized, B, when looking up at the target MAC address, the non-aged database looks up at the MAC address list, which meets the requirement of exchange and transmission and realizes hardware operation.

Description

technical field [0001] The invention relates to electric communication technology, in particular to a MAC address table aging, operation method and processing system thereof. Background technique [0002] With the continuous expansion of people's demand for broadband metropolitan area network, the application of three-layer switches is more and more extensive, and the forwarding table-MAC address table in the switch is also getting larger and larger. [0003] When the switch performs switching and forwarding, the aging of the MAC address table is required. With the development of TCAM chip technology, some advanced TCAM hardware also supports aging of entries, but its hardware aging function cannot meet the requirements of network switching. [0004] Its concrete reason is: when switchboard carries out MAC address exchange, need look up MAC table twice, at first, search with source MAC address to carry out source MAC address study; In this case, the two lookups are performe...

Claims

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Application Information

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IPC IPC(8): H04L12/64H04L12/56H04L29/12
Inventor 郭英辉
Owner HUAWEI TECH CO LTD
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