Method and apparatus for rapidly reconfiguring computer networks
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United States of America Patent
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Dec 7, 2010
Grant Date -
N/A
app pub date -
Apr 25, 2005
filing date -
Dec 24, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for operating a computer network includes: a become_root_primary command is issued to a first router to set an ID so that a spanning tree protocol (STP) selects the first router as a primary root router; a become_root_secondary command is issued to a second router to set an ID so that STP selects the second router as a secondary root router; transitioning, in response to failure of the first router, the second router to become the root router. An enable_uplinkfast command is issued to a router, and the router selects a backup designated port for a designated port, and selects a backup root port for a root port. Ports transmit BPDU messages as heartbeat messages, and a failure to detect the BPDU messages results in a backup port assuming the role of a port not detecting the BPDU messages.
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