B
backbone area

In OSPF, an area that consists of all networks in area ID 0.0.0.0, their attached routers, and all area border routers.

backplane

On an M40 router, component of the Packet Forwarding Engine that distributes power, provides signal connectivity, manages shared memory on FPCs, and passes outgoing data cells to FPCs.

bandwidth

The range of transmission frequencies a network can use, expressed as the difference between the highest and lowest frequencies of a transmission channel. In computer networks, greater bandwidth indicates faster data-transfer rate capacity.

BERT

Bit error rate test. A test that can be run on a T3 interface to determine whether it is operating properly.

BGP

Border Gateway Protocol. Exterior gateway protocol used ...

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