SPOTLIGHT: Innovation of the Week: PBT interest growing

What: Provider backbone transport (PBT) technology, also known as provider backbone bridging-traffic engineering (PBB-TE)
Why you should care: PBT is a Layer 2 switching scheme that makes Carrier Ethernet cheaper by removing Spanning Tree, media access control address-flooding and other features more pertinent to enterprise Ethernet than Carrier Ethernet. The result also simplifies point-to-point connections.
Who's using it? BT has been the carrier most vocally supportive of PBT, and Nortel Networks was perhaps the earliest vendor behind the technology. Together, they proposed PBB-TE standardization at the IEEE, which is ongoing. Several other vendors also now support the technology, and many carriers are interested.
Primary challenge it faces: Carrier Ethernet already has become a success using Layer 3 transport-multiprotocol label switching (T-MPLS). PBT may need to displace T-MPLS to fully succeed, though some people in the industry believe PBT and T-MPLS both will be used often in the same networks.
This story from Network World last June highlights points in the PBT vs. T-MPLS debate.

Suggested Articles

On Tuesday, the Communications Workers of America (CWA) announced it has reached an early agreement with CenturyLink.

In the age of the cloud, containers and Kubernetes, developers are increasingly becoming the key decision makers for enterprises.

AT&T's partnership with Microsoft last month was the telco's coming out party for its "public cloud first" strategy, which includes…