- IEEE 802.1ad-2005
IEEE 802.1ad (Provider Bridges) is an amendment to
IEEE standardIEEE 802.1Q -1998 (aka QinQ or Stacked VLANs), intended to develop an architecture and bridge protocols to provide separate instances of the MAC services to multiple independent users of a Bridged Local Area Network in a manner that does not require cooperation among the users, and requires a minimum of cooperation between the users and the provider of the MAC service. Standard approved 8 December 2005 and published May 26 2006.The idea is to provide f.ex. customers possibility to run their own VLAN's inside service provider's provided VLAN. This way the service provider can just configure one VLAN for the customer and customer can then treat that VLAN as if it was a trunk.
External links
* http://www.ieee802.org/1/pages/802.1ad.html
* [http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_guide09186a00801f0f4a.html IEEE 802.1Q-in-Q VLAN Tag Termination (Cisco)]
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