You have designed and implemented MPLS-TE for fast router in your network core. Your network core consists of Cisco CRS-1 carrier routing System devices interconnected using XDM and Sonet Transport. You are using OSPF as the IGP, and MP-BGP is running on the PE devices to support Layer 3 VPN services. You are offering voice service over VPN circuits. So you want a link convergence of no greater than 100ms. Which option should you use for faster link failure detection and to improve the performance of your network?
A.
Use OSPF fast hello packets with dead-interval and hello multiplier
B.
Reduce MP-BGP hello timers between the neighbors
C.
Configure MPLS-TE tunnels with the dynamic backup option
D.
Configure MPLS-TE tunnels to autoroute announce
E.
Configure BFD on the core links with the appropriate BFD multiplier.