Tuesday, June 15, 2010

Provider Bridges

IEEE 802.1ad
Amendment to 802.1Q, for the purpose to create an architecture and bridge protocols to provide separate instances of MAC services to multiple independent users of a Bridged Local Area Network without the cooperation of the users, and small cooperation between users and provider of the MAC service.

What this does is provides the possibility for customers to run their own VLANs inside a service provider's provided VLAN. In doing this the Service provider makes one VLAN for the customer and the customer creates the given VLAN as a trunk.

Insertion of 802.1ad DoubleTag in Ethernet-II frame


Defined in this standards document:

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