Hitless restart of access control module

Details Hitless restart of access control module Hitless restart of access control module

2007-02-20

2007-02-20

Bataille, Pierre (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C365S049130, C365S050000, C711S205000, C711S207000

Reexamination Certificate

active

10454103

ABSTRACT:
Performing selective update of a content addressable memory (CAM) following restart of an access control module (ACM) at a network node involves maintaining a restart CAM entry database in shared memory. When the ACM restarts, instead of reentering all CAM entries into the CAM or reading the contents of the CAM, the ACM only updates the CAM with the entries that were modified while the ACM was offline, prior to restart.

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“High Availability for the Catalyst 6000 Family,” Cisco Systems, White Paper, Copyright 2001.

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