Bit,Capability Description,Reference
0,GMPLS LSP (G),[RFC9504]
1,Bidirectional Co-routed LSP (B),[RFC9504]
2-3,Routing Granularity (RG),[RFC9504]
4,"Strict-Path Flag (O) (TEMPORARY - registered 2024-02-23, extension registered 2025-03-12, expires 2026-02-23)",[draft-ietf-pce-circuit-style-pcep-extensions-03]
5-31,Unassigned,