Your retail customer has 330 branch locations that it wishes to connect via Frame Relay. At the headquarters location there will be two DS-3 Frame Relay circuits, each connected to an ISR 3845 router. Each branch location will have a fractional T1 with a 128-kbps CIR and a PVC mapped to each of the DS-3 circuits. Which two considerations must be addressed for this design? (Choose two.)
A.
The MTU for the Frame Relay circuits should be set to 4470 to allow the LMI message to include all 330 DLCIs.
B.
Additional routers and circuits should be installed at headquarters so that no more than 200 branch locations are mapped to each ISR due to IDB limitations.
C.
The customer should not run OSPF. Since all branches are connected to the same circuit at headquarters they must be in the same OSPF area, and the number of branches exceeds the design recommendations for routers in an OSPF area.
D.
Frame Relay traffic shaping should be implemented to prevent congestion in the Frame Relay switch.
E.
The CIRs should be reduced so the DS-3 circuits are not oversubscribed.