Optimal SYNC for rapid spanning tree protocol

In one embodiment, a rapid spanning tree protocol (RSTP) is executed on an intermediate network device. The RSTP may designate a first port of the device to a Root Port Role and designate one or more second ports of the device to Designated Port Roles, and place the one or more second ports in a for...

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Bibliographic Details
Main Authors FINN NORMAN W, KALUVE SHYAMASUNDAR S
Format Patent
LanguageEnglish
Published 31.05.2007
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:In one embodiment, a rapid spanning tree protocol (RSTP) is executed on an intermediate network device. The RSTP may designate a first port of the device to a Root Port Role and designate one or more second ports of the device to Designated Port Roles, and place the one or more second ports in a forwarding state. Subsequently, the intermediate network device may reassign the Root Port Role from the first port to a third port of the device and blocking the first port. If the intermediate network device receives a proposal bridge protocol data unit (BPDU) message on the third port, rather than transition the one or more second ports to a blocking state, the intermediate device is adapted to maintain the one or more second ports in the forwarding state.
Bibliography:Application Number: US20070653009