SRv6 Instruction Naming Conventions
SRv6 (Segment Routing over IPv6)uses segment identifiers (SIDs) with specific functions, indicated byinstruction keywords:
✅A. T: Searches a specified routing table to forward packets.
T (Table Lookup)→ Performsa lookup in a specified routing tableand forwards packets accordingly.
❌B. M: Searches a Layer 2 forwarding table for unicast forwarding.
Incorrect!SRv6 does not use M for Layer 2 unicast forwarding.
✅C. V: Searches a VPN instance routing table to forward packets.
V (VPN Routing Table Lookup)→Performs a lookup in a VPN instance (VRF) tablefor forwarding.
✅D. X: Forwards packets through one or a group of specified Layer 3 interfaces.
X (Cross-connect forwarding)→Forwards packets via a specified Layer 3 interface or group of interfaces.
Reference from Huawei HCIE-Datacom Documentation:
Huawei SRv6 Configuration Guide – SRv6 SID Naming and Instruction Set
HCIE-Datacom Study Material – Segment Routing over IPv6 (SRv6) Functionality
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