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H35-211_V2.5 · Question #198

When PITP is enabled globally or in a VLAN service template on the OLT, and the service virtual port allows upstream packets to carry vendor tags, and user upstream packets carry vendor tag…

The correct answer is C. The OLT strips the vendor tag carried in the upstream PITP message and adds the local vendor. See the full explanation below for the reasoning.

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Question

When PITP is enabled globally or in a VLAN service template on the OLT, and the service virtual port allows upstream packets to carry vendor tags, and user upstream packets carry vendor tag information, which of the following statements about the OLT's PITP packet processing strategy is correct?

Options

  • AOLT adds the local vendor tap to the upstream PITP message
  • BOLT directly forwards the user-side PITP message without any processing
  • CThe OLT strips the vendor tag carried in the upstream PITP message and adds the local vendor
  • DThe OLT discards the upstream PITP message

How the community answered

(34 responses)
  • A
    6% (2)
  • B
    9% (3)
  • C
    82% (28)
  • D
    3% (1)

Topics

#PITP#vendor tag#upstream packet processing#OLT policy

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