300-510 SPRI: Implementing Cisco Service Provider Advanced Routing SolutionsDemo

By Cisco · Question Mode

QuestionQ94

MPLS and Segment Routing

Question Image

Refer to the exhibit. A connectivity problem exists between Customer-1 and Customer-2. File servers between the customers cannot transmit critical data. R3 routes are absent from the routing table on the Customer-1 router. All Customer-1 interfaces are up. Which configuration must be applied on router R2 to resolve the issue?

  • A
  • B
  • C
  • D
Explanation

R2 must allocate an MPLS label for all global IPv4 BGP routes before advertising them over its IPv4 labeled-unicast BGP sessions. allocate-label all is configured under router bgp 1 → address-family ipv4 unicast; this enables R2 to send labeled routes to its labeled-unicast peers so the remote customer routes can be installed and used across the MPLS path. Cisco documents that allocate-label allocates labels for IPv4 routes sent to neighbors configured for labeled-unicast sessions.

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