Refer to the exhibit. What must be done on router RTA to ensure that EIGRP works
effectively in a Frame Relay multipoint environment?

A.
Issue the command bandwidth 56on each subinterface.

B.
Issue the command bandwidth 224on each subinterface.

C.
Issue the command bandwidth 56on the physical interface.

D.
Issue the command bandwidth 224on the physical interface.

Explanation:
In Frame Relay, all neighbors share the same bandwidth, regardless of the actual CIR of
each individual PVC. In this case the CIR of each PVC is the same so we can find the
bandwidth of the main interface (multipoint connection interface) by 56 x 4 = 224.
Notice that if the bandwidth on each PVC is not equal then we get the lowest bandwidth to
multiply.