Classification and tagging rules for switching nodes

Details Classification and tagging rules for switching nodes Classification and tagging rules for switching nodes

2006-01-24

2006-01-24

Sam, Phirin (Department: 2661)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S392000

Reexamination Certificate

active

06990106

ABSTRACT:
A VLAN classification and tagging system for a switching node. During VLAN classification, an inbound packet is assigned to a VLAN in accordance with a classification mode selectable from a PASS, FORCE, and PROTOCOL modes. In PASS mode, the packet is assigned to a VLAN associated with a VLAN ID from the packet. In FORCE mode, the packet is assigned to a VLAN associated with an ingress port. In PROTOCOL mode, the packet is assigned to a VLAN associated with a protocol type of the packet. During VLAN tagging, a VLAN identifier in an outbound packet is modified or not in accordance with a tagging mode selectable from a PASS, FORCE, and REMOVE modes. In PASS mode, the VLAN ID in the packet is retained as received. In FORCE mode, the VLAN ID in the packet is replaced with a VLAN ID to which the packet was classified at inbound. In REMOVE mode, the VLAN ID from the packet is removed without substitution.

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