单项选择题
What is true about a Bypass Tunnel in MPLS Fast Reroute?（）
A. Only configured on the egress router B. Only configured on the ingress router C. Is pre-signalled to reduce packet loss D. Must intersect the primary LSP at two locations
单项选择题 Which CLI command is used to enable MPLS Fast Reroute on a ingress router?（）
多项选择题 What are two advantages to customers with L2 MPLS VPNs? （）(Choose two.)
单项选择题 How is a Martini Layer 2 MPLS VPN established?（）
