4A0-105: Nokia Virtual Private LAN ServicesDemo

By Nokia · Question Mode

QuestionQ161

Large scale VPLS deployments

Refer to the exhibit below.

Question Image

How many total LSPs are needed between Metro A and Metro B when 100 hierarchical VPLS services are deployed across the two metro networks?

  • A 100
  • B 200
  • C 1
  • D 2
Explanation

An MPLS LSP is unidirectional, so traffic between the two metro networks requires one transport LSP in each direction. Hierarchical VPLS service traffic can be multiplexed over those transport LSPs using service labels, so deploying 100 services does not require a separate LSP pair for every service.

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