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

DriveNets is getting a spotlight during a demonstration at next week's OCP Experience Center event. (Pixabay)

VMware has announced the general availability of its "cloud-first" orchestration solution for service providers, and a new name for the product.

Add Infinera to the—so far—short list of companies that are pulling out of OFC 2020 conference next month in San Diego. Infinera announced Thursday it