4A0-105: Nokia Virtual Private LAN ServicesDemo

By Nokia · Question Mode

QuestionQ83

VPLS Features

Refer to the exhibit below.

Question Image

The service MTU on PE-A is 1514 bytes, and the service MTU on PE-C is 1518 bytes. What is the status of the mesh-sdp between PE-A and PE-C?

  • A The mesh-sdp will be up.
  • B The mesh-sdp will be down.
  • C The mesh-sdp will only be up on PE-A.
  • D The mesh-sdp will only be up on PE-C.
Explanation

On Nokia 7750 SR / SR OS, the service MTU for a VPLS instance must match on every PE participating in that service, including across mesh-SDP bindings between them; the system verifies MTU compatibility for a mesh-SDP binding and keeps it operationally down when the configured service MTUs of the two peering PEs disagree, since traffic sized for the larger MTU cannot be reliably carried across a path expecting the smaller MTU.

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