Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-02-20
2007-02-20
Pham, Chi (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S395530, C370S392000
Reexamination Certificate
active
10282846
ABSTRACT:
A system maps network messages between a customer Virtual Local Area Network (VLAN) domain and a provider VLAN domain. Specifically, one or more ports of an intermediate network device includes frame mapping logic and may further include a plurality of highly flexible, programmable mapping tables. In accordance with the invention, a received frame associated with a customer VLAN is mapped to a provider VLAN that is selected as a function of the frame's customer VLAN and the particular port on which the frame is received. The frame may also be mapped to a provider CoS value that is selected as a function of the frame's customer CoS value, customer VLAN and the port on which the frame is received. The provider VLAN designation and provider CoS value may be appended to the frame. Forwarding decisions within the provider domain are based, at least in part, on the frame's provider VLAN designation and provider CoS value.
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De Silva Suran S.
Finn Norman W.
Abelson Ronald
Cesari and McKenna LLP
Cisco Technology Inc.
Pham Chi
LandOfFree
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