Provider Link State Bridging

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Provider Link State Bridging is a proposal brought by Nortel to the IEEE 802.1aq Shortest Path Bridging Working Group. It combines IEEE 802.1ah MACinMAC, the IS-IS routing protocol, and the techniques of filtering database population specified by IEEE 802.1Qay Provider Backbone Bridge Traffic Engineering to produce a link state based spanning tree replacement for 802.1ah based upon shortest path trees and reverse path forwarding for multicast. It is complementary to 802.1Qay in that PLSB forwarding delivers virtualized broadcast LAN segments, while 802.1Qay provides complete route freedom for point-to-point connections, and both may co-exist on a single platform.