Backup CRF VLAN
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United States of America Patent
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-
Dec 2, 2003
Grant Date -
N/A
app pub date -
Mar 10, 1999
filing date -
Nov 30, 1998
priority date (Note) -
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Importance
Abstract
A backup CRF VLAN arrangement provides an alternate, redundant path for traffic between undistributed Concentrator Relay Functions (CRFs) located on separate switches interconnected by trunk links of a distributed token ring bridge. The backup CRF virtual local area network (VLAN) arrangement defines a backup network path which may be utilized if a primary active path is not a valid path to a backup network. Notably, the backup network comprises a special type of CRF that is distributed among the switches, but that has only one port active at any given time.
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