单选题Which CLI command is used to enable MPLS Fast Reroute on a ingress router?（）A mpls fast rerouteB mpls fast-rerouteC enable mpls fast-rerouteD tunnel mpls fast-reroute
题目
单选题
Which CLI command is used to enable MPLS Fast Reroute on a ingress router?（）
A
mpls fast reroute
B
mpls fast-reroute
C
enable mpls fast-reroute
D
tunnel mpls fast-reroute