System and method for assuring the operation of network devices in bridged networks
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United States of America Patent
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Dec 4, 2012
Grant Date -
Feb 1, 2007
app pub date -
Jul 15, 2005
filing date -
Jul 15, 2005
priority date (Note) -
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Abstract
A system and method assures the proper and continued operation of intermediate network devices, such as bridges, in a computer network. The bridge includes a spanning tree protocol (STP) engine, which is configured to have a bridge assurance (BA) sub-engine. The STP engine assigns the bridge's ports to one of a Root, Alternate, Designated or Backup Role. The BA sub-engine directs the STP engine to issue configuration messages from all ports to which neighboring bridges are coupled, including ports assigned to the Root and Alternate roles. The BA sub-engine further looks for the receipt of BPDU messages from neighboring bridges and employs one or more timers to determine whether the neighboring bridges are continuing to operate properly.
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