Methods, systems, and computer program products for...

Details Methods, systems, and computer program products for... Methods, systems, and computer program products for...

2011-08-16

2011-08-16

Moe, Aung S (Department: 2474)

Multiplex communications

Communication techniques for information carried in plural...

Adaptive

C370S395530, C725S015000, C713S001000, C713S150000

Reexamination Certificate

active

08000344

ABSTRACT:
Methods, systems, and computer program products for sending and receiving frames associated with different VLANs over a secure layer 2 broadcast transport network are disclosed. According to one method, a layer 2 frame is received at a transmit port of a layer 2 forwarding device. The layer 2 frame is to be sent over a secure layer 2 broadcast transport network. A VLAN identifier corresponding to a first VLAN is extracted from the layer 2 frame. The first VLAN identifier is mapped to a second VLAN identifier used by the secure broadcast transport layer 2 network to identify the first VLAN. A portion of the layer 2 frame including the first VLAN identifier is encrypted. The layer 2 frame is transmitted over the secure layer 2 broadcast transport network with the second VLAN identifier in a cleartext portion of the frame.

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“Virtual Bridged Local Area Networks,” IEEE 802.1Q, pp. 1-303 (2005).

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