300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and ServicesDemo

Question

How are MPLS Layer 3 VPN services deployed?

A The RD and RT values must match under the VRF.
B The import and export RT values under a VRF must always be the same.
C The label switch path must be available between the local and remote PE routers.
D The RD and RT values under a VRF must match on the remote PE router.

Explanation

An MPLS label-switched path must be available between the local and remote PE routers so VPN traffic can traverse the provider backbone to the egress PE. Route distinguishers provide route uniqueness, while route targets control route import and export policies; neither requires the matching constraints stated in the other choices.

Learn more

MPLS Layer 3 VPNs Configuration Guide, Cisco IOS Release 12.4T

300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and ServicesDemo

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Notes

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