300-610 DCID: Designing Cisco Data Center InfrastructureDemo

By Cisco · Question Mode

QuestionQ91

Network Design

A Cisco engineer is configuring MPLS VPN BGP at a customer site connected to the provider site through more than one path. MPLS VPN BGP Local Convergence link protection is enabled. After the engineer installs the primary forwarding path and redundant backup path in BGP, they assign a unique route distinguisher to each VRF table on every PE device serving as a backup to the link.

What is a prerequisite for this local convergence to function?

  • A IP/GRE is enabled.
  • B Interautonomous system option A (back-to-back VRF) is active.
  • C BGP must support lossless switchover between operational paths.
  • D The system is performing a PE-CE link protection on both ends.
Explanation

MPLS VPN BGP Local Convergence requires both the primary and backup paths to be installed in BGP, with BGP capable of a lossless switchover between the operational paths. This preserves forwarding during the transition while BGP reconverges.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!