Packets arrive at the VPRN SAP on PE1 with DSCP marking of af11 and Dot1p of 2. According to the QoS policies applied at routers PE1, P, and PE2, what is the dot1p value of packets egressing routerPE2? (All the SDPs are MPLS-encapsulated, and all interfaces are using their default trust states).
Packets with DSCP of af11 and Dot1p of 2 enter PE1. Based on the QoS policies, they get mapped to lsp-exp 4. As the packet travels to router P, it undergoes a remarking process. When leaving router P, the packet has lsp-exp 6. When it arrives at PE2, it gets mapped to queue 5, which has a Dot1p value of 6, due to the QoS policies applied there. Therefore, the correct Dot1p value of packets egressing from router PE2 is 6.
D is correct, due to re-marking at P network egress