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

By Cisco · Question Mode

QuestionQ402

Layer 3 Technologies

Into what does the PE router convert the IPv4 prefix in an MPLS VPN?

  • A eBGP path association between the PE and CE sessions
  • B prefix that combines the ASN, PE router-id, and IP prefix
  • C 48-bit route combining the IP and PE router-id
  • D VPN-IPv4 prefix combined with the 64-bit route distinguisher
Explanation

An MPLS Layer 3 VPN PE prepends a 64-bit route distinguisher to an IPv4 prefix, producing a VPN-IPv4 prefix. The route distinguisher makes otherwise identical customer IPv4 prefixes unique across VPNs.

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