4A0-105: Nokia Virtual Private LAN ServicesDemo

By Nokia · Question Mode

QuestionQ183

VPLS loop avoidance

Complete the blank in the following sentence: Flooded traffic received on any ____________ in the service is replicated to other spoke SDPs and SAPs and is not transmitted on any mesh SDPs.

  • A Spoke SDP -A. Either (a) or (b) will make this sentence true.
  • B Mesh SDP
  • D Neither (a) nor (b) will make this sentence true.
Explanation

In a VPLS service, mesh SDPs are logically treated as a single bridge port for flooded traffic. Traffic flooded from any mesh SDP is replicated to spoke SDPs and SAPs, but not to any mesh SDP, preventing mesh-to-mesh forwarding loops.

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