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Method and device for maintaining item

A technology for maintaining tables and entries, which is applied in the field of network communication, can solve the problem of occupying TCAM storage space, and achieve the effect of reducing the storage burden

Active Publication Date: 2010-02-03
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there is no aging mechanism for entries in the TCAM. Therefore, entries in the TCAM can only be deleted manually. Otherwise, entries that have not been hit for a long time will still occupy the storage space of the TCAM. Thus causing the storage burden of TCAM

Method used

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  • Method and device for maintaining item

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The method provided by the present invention mainly includes: traversing the entries with the preset time T1 as a cycle, and performing the following steps on each entry: judging whether the current entry is a hit; if not, increasing the miss corresponding to the current entry count value, and judge whether the miss count value of the current entry reaches the preset count threshold M, and if so, report the aging information of the entry, and delete the current entry according to the aging information.

[0028] Below to figure 2 As an example, the method provided by the present invention is described in detail, figure 2 The method flowchart provided for the embodiment of the present invention, such as figure 2 As shown, the method may ...

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Abstract

The present invention provides a method and device of maintaining table entry, including: traversing all tables using predetermined time T1 as cycle, and executing following steps to the traversal present table: judging whether the present table hit or not, if not, the un-hit enumerated data corresponding to the present table is enhanced, and judging the un-hit enumerated data whether achieving the preset enumerated threshold M or not, if achieving, the ageing information of the present table is reported, deleting the present table according to the ageing information. A timing aging mechanismaimed to the table of the TCAM is provided, achieving automatically delete ageing table in TCAM, reducing storage load of TCAM.

Description

technical field [0001] The invention relates to network communication technology, in particular to a method and device for maintaining table items. Background technique [0002] Tri-state content addressable memory (TCAM, Ternary Content Addressable Memory) is a kind of high-efficiency dedicated chip derived with the continuous improvement of the processing speed of network equipment. TCAM can obtain the address according to the input content. When inputting a content, TCAM uses the input content to search the data stored in TCAM. If there is matching data, it hits the entry corresponding to the data and obtains the hit table the content of the item. [0003] figure 1 It is a structural schematic diagram of TCAM in the prior art, such as figure 1 As shown, each entry is stored in the entry storage module, wherein each entry corresponds to an index. When the entry management module adds an entry to the entry storage module through the driver module, the driver module can o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/30
Inventor 陈荻
Owner NEW H3C TECH CO LTD
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