05764636 is referenced by 165 patents and cites 7 patents.

A color blocking logic (CBL) mechanism implements spanning tree states with respect to data frames transported between port interface circuitry over a link connecting different switches in a network. Each port interface circuit preferably supports multiple virtual local area network (VLAN) designations and associates those VLAN designations with data frames transmitted to and from the switch over the link. The CBL mechanism cooperates with a forwarding engine of the switch to selectively enable the port interface circuit to receive certain VLAN-designated frames, and to discard others, in an efficient and cost-effective manner.

Title
Color blocking logic mechanism for a high-performance network switch
Application Number
8/620788
Publication Number
5764636
Application Date
March 28, 1996
Publication Date
June 9, 1998
Inventor
Tom Edsall
Mountain View
CA, US
Agent
Cesari and McKenna
Assignee
Cisco Technology
CA, US
IPC
H04L 12/28
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