Comprehensive and Detailed Explanation:

✔SRv6 (Segment Routing over IPv6) Flavorsprovide additionalprocessing behaviorsfor SRv6End instructions.

✔PSP (Penultimate Segment Popping) Flavor:

PSP enables the penultimate node to remove the SRH (Segment Routing Header)before forwarding the packet to the last segment.

This reduces the processing overheadon the final segment node.

✔Correct End Instructions for PSP:

✅(A) End.X→ Cross-connect behavior between segments.

✅(C) End.T→ Transport encapsulation in SRv6.

✅(D) End→ Basic SRv6 endpoint behavior.

❌(B) End.BM is incorrect→ This is used forBinding Segment (BSID)behavior and does not support PSP.

????Reference:Huawei HCIE Datacom – SRv6 Flavors and End Instructions