300-515 SPVI: Implementing Cisco Service Provider VPN ServicesDemo

By Cisco · Question Mode

QuestionQ2

Layer 3 VPNs

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Refer to the exhibit. The CE router has formed a BGP peering with the PE router, and the CE will use the PE core infrastructure as a backbone carrier to support CSC. What additional task can you perform to complete the configuration?

  • A Configure static routing on the CE router.
  • B Configure the address-family ipv4 labeled-unicast command under the neighbor configuration of the CE router for the PE.
  • C Change the rd value to 65001:65001 under the VRF section of the PE router.
  • D Configure OSPF on the PE router.
Explanation

Carrier Supporting Carrier requires the CSC-CE and CSC-PE to exchange IPv4 routes together with MPLS labels through BGP. The PE neighbor already uses the IPv4 labeled-unicast address family, so the CE neighbor must also be configured for address-family ipv4 labeled-unicast to enable labeled route exchange.

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