Color blocking logic mechanism for a high-performance network sw

Details Color blocking logic mechanism for a high-performance network sw Color blocking logic mechanism for a high-performance network sw

1996-03-28

1998-06-09

Chin, Wellington

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370256, 370400, H04L 1228

Patent

active

057646368

ABSTRACT:
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.

REFERENCES:
patent: 4597078 (1986-06-01), Kempf
patent: 4627052 (1986-12-01), Hoare et al.
patent: 4823338 (1989-04-01), Chan et al.
patent: 5280480 (1994-01-01), Pitt et al.
patent: 5394402 (1995-02-01), Ross
patent: 5490252 (1996-02-01), Macera et al.
patent: 5606669 (1997-02-01), Bertin et al.

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