Provider Backbone Bridge Traffic Engineering

<p>Provider Backbone Bridge Traffic Engineering (PBB-TE) is a <a href="/facts/Computer_network/3w5RM99p">computer networking</a> technology specified in IEEE 802.1Qay, an amendment to the <a href="/facts/IEEE_802.1Q/nxc5VxI2">IEEE 802.1Q</a> standard.  PBB-TE adapts <a href="/facts/Ethernet/nMfhU8tU">Ethernet</a> to carrier class transport networks. It is based on the layered <a href="/facts/VLAN/QhdJNaWX">VLAN</a> tags and MAC-in-MAC encapsulation defined in <a href="/facts/IEEE_802.1ah/wblMUsQl">IEEE 802.1ah</a> (Provider Backbone Bridges (PBB)), but it differs from PBB in eliminating flooding, dynamically created forwarding tables, and spanning tree protocols. Compared to PBB and its predecessors, PBB-TE behaves more predictably and its behavior can be more easily controlled by the network operator, at the expense of requiring up-front connection configuration at each bridge along a forwarding path. PBB-TE <a href="/facts/OA%2526M/3nsCyyeB">Operations, Administration, and Management (OAM)</a> is usually based on <a href="/facts/IEEE_802.1ag/Ro1C2ysD">IEEE 802.1ag</a>.  It was initially based on Nortel's Provider Backbone Transport (PBT).
</p><p>PBB-TE's connection-oriented features and behaviors, as well as its OAM approach, are inspired by <a href="/facts/Synchronous_Digital_Hierarchy/G3LgtGS6">SDH</a>/<a href="/facts/SONET/G3LgtGS6">SONET</a>. PBB-TE can also provide path protection levels similar to the UPSR (Unidirectional Path Switched Ring) protection in SDH/SONET networks.
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Provider Backbone Bridge Traffic Engineering open-in-new

Provider Backbone Bridge Traffic Engineering