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MAC address table ageing, operation method and process system thereof

A technology of MAC address table and MAC address, which is applied in the field of operation method and its processing system, MAC address table aging, and can solve the problems of MAC address table aging and non-compliance with switching and forwarding requirements, etc.

Inactive Publication Date: 2010-04-21
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

Examples

Experimental program
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Embodiment 1

[0052] according to figure 1 The application system of this embodiment includes a TCAM chip 1 and a forwarding chip 3. The TCAM chip 1 has an aging function module 11 and a MAC address table 12. The TCAM chip 1 includes two databases 13, 14, one of which is Aging database 13, the other is non-aging database 14, aging database 13 and non-aging database 14 contain aging bit data, aging database 13 and non-aging database 14 are respectively set in the configuration register of TCAM chip, aging database The configuration register corresponding to 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. The aging function module 11 can only directly operate the aging bit data in the aging database, but cannot Aged bit data in the non-aged database 14 is directly manipulated.

[0053]The aging database 13 and the non-aging database 14 are associated with the MAC address table 12. In the present inv...

Embodiment 2

[0078] Such as Figure 4 As shown, 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 also includes The 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 table 121 and The contents of the MAC address table 122 are the same, 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.

[0079] Such as Figure 4 and Figure 5 As shown, the basi...

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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 theMAC 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 looksup 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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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/64H04L12/56H04L29/12
Inventor 郭英辉
Owner HUAWEI TECH CO LTD