QuestionQ8

Services Architecture

Consider an E-pipe service that is configured with SAP 1/1/1:5 and SAP 1/1/1:6.7. If SAP 1/1/1:5 accepts an ingress frame, which of the following statements is TRUE?

  • A The frame egresses 1/1/1:6.7 with an outer VLAN tag of 6 and inner tag of 7.
  • B The frame is dropped at the egress SAP 1/1/1:6.7.
  • C The frame egresses 1/1/1:6.7 with VLAN tag 5.
  • D The frame egresses 1/1/1:6.7 with VLAN tag 6
Explanation

An E-pipe service removes service-delimiting VLAN tags at a dot1q ingress SAP. A QinQ egress SAP pushes its configured SAP tags, so SAP 1/1/1:6.7 transmits the frame with outer VLAN tag 6 and inner VLAN tag 7.

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