Câu 131: 400-201: CCIE SP Written v4.1

Refer to the exhibit. MPLS P2MP TE must be enabled to deliver multicast traffic for their Layer 3 VPN customers. Assume that the operations engineer has enabled IP multicast and PIM in SSM mode on all PE routers and has also created the tunnel interface at the headend router as shown. Which two additional steps are needed to enable the service provider network to transport the customer multicast traffic over the MPLS P2MP TE tunnel? (Choose two.)

1. A. At the tailend and mid-end routers, configure a multicast static route back to the headend router
2. B. At the headend routers, enable pim sparse-mode on the core interfaces
3. C. At the headend routers, apply the ip igmp static-group command — đáp án hiện tại
4. D. Apply the ip multicast mpls traffic-eng command in all PE and P routers
5. E. Enable ip multicast and pim in the sparse mode on all IP routers
6. F. At the tailend routers, configure a multicast static route back to the headend router — đáp án hiện tại