Internet Assigned Numbers Authority Path Computation Element Protocol (PCEP) Numbers Created 2008-12-19 Last Updated 2024-09-10 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registries included below • PCEP Messages • PCEP Objects • PCEP Message Common Header Flag Field • Open Object Flag Field • RP Object Flag Field • NO-PATH Object NI Field • NO-PATH Object Flag Field • METRIC Object T Field • METRIC Object Flag Field • LSPA Object Flag Field • IRO Subobjects • SVEC Object Flag Field • Notification Object • Notification Object Flag Field • PCEP-ERROR Object Error Types and Values • PCEP-ERROR Object Flag Field • LOAD-BALANCING Object Flag Field • CLOSE Object Reason Field • CLOSE Object Flag Field • PATH-KEY Subobjects • XRO Subobjects • XRO Flag Field • Objective Function • PCEP TLV Type Indicators • NO-PATH-VECTOR TLV Flag Field • MONITORING Object Flag Field • PROC-TIME Object Flag Field • OVERLOAD Object Flag field • BU Object Type Field • Inter-Layer Object Path Property Bits • LSP Object Flag Field • STATEFUL-PCE-CAPABILITY TLV Flag Field • LSP-ERROR-CODE TLV Error Code Field • SRP Object Flag Field • PCEP Path Setup Types • PCEP SR-ERO NAI Types • SR-ERO Flag Field • PATH-SETUP-TYPE-CAPABILITY Sub-TLV Type Indicators • SR Capability Flag Field • WA Object Flag Field • Wavelength Restriction TLV Action Values • Wavelength Allocation TLV Flag Field • S2LS Object Flag Field • H-PCE-CAPABILITY TLV Flag Field • Domain-ID TLV Domain Type • H-PCE-FLAG TLV Flag Field • ASSOCIATION Flag Field • ASSOCIATION Type Field • AUTO-BANDWIDTH-CAPABILITY TLV Flag Field • AUTO-BANDWIDTH-ATTRIBUTES Sub-TLV Types • Path Protection Association Group TLV Flag Field • Generalized Endpoint Types • GMPLS-CAPABILITY TLV Flag Field • DISJOINTNESS-CONFIGURATION TLV Flag Field • SCHED-PD-LSP-ATTRIBUTE TLV Opt Field • Schedule TLVs Flag Field • FLOWSPEC Object Flag Field • PCEP Flow Specification TLV Type Indicators • Bidirectional LSP Association Group TLV Flag Field • PCECC-CAPABILITY sub-TLV • CCI Object Flag Field for MPLS Label • TE-PATH-BINDING TLV BT Field • TE-PATH-BINDING TLV Flag Field • LSP-EXTENDED-FLAG TLV Flag Field • LSP Exclusion Subobject Flag Field • PCEP SRv6-ERO NAI Types • SRv6-ERO Flag Field • SRv6 Capability Flag Field • CCI Object Flag Field for Native-IP • BPI Object Status Code Field • BPI Object Error Code Field • BPI Object Flag Field PCEP Messages Reference [RFC5440] Available Formats [IMG] CSV Range Registration Procedures 0-251 IETF Review 252-255 Experimental Use Value Description Reference 0 Reserved [RFC5440] 1 Open [RFC5440] 2 Keepalive [RFC5440] 3 Path Computation Request [RFC5440] 4 Path Computation Reply [RFC5440] 5 Notification [RFC5440] 6 Error [RFC5440] 7 Close [RFC5440] 8 Path Computation Monitoring Request (PCMonReq) [RFC5886] 9 Path Computation Monitoring Reply (PCMonRep) [RFC5886] 10 Report [RFC8231] 11 Update [RFC8231] 12 LSP Initiate Request [RFC8281] 13 StartTLS [RFC8253] 14-251 Unassigned 252-255 Experimental Use [RFC8356] PCEP Objects Reference [RFC5440][RFC Errata 4956] Available Formats [IMG] CSV Range Registration Procedures 0-247 IETF Review 248-255 Experimental Use Object-Class Value Name Object-Type Reference 0 Reserved 0-15: Reserved [RFC5440][RFC Errata 4956] 1 OPEN 0: Reserved [RFC5440][RFC Errata 4956] 1: Open [RFC5440] 2-15: Unassigned 2 RP 0: Reserved [RFC5440][RFC Errata 4956] 1: Request Parameters [RFC5440] 2-15: Unassigned 3 NO-PATH 0: Reserved [RFC5440][RFC Errata 4956] 1: No Path [RFC5440] 2-15: Unassigned 4 END-POINTS 0: Reserved [RFC5440][RFC Errata 4956] 1: IPv4 addresses [RFC5440] 2: IPv6 addresses [RFC5440] 3: IPv4 [RFC8306] 4: IPv6 [RFC8306] 5: Generalized Endpoint [RFC8779, Section 2.5] 6-15: Unassigned 5 BANDWIDTH 0: Reserved [RFC5440][RFC Errata 4956] 1: Requested bandwidth [RFC5440] 2: Bandwidth of an existing TE LSP for which a reoptimization is [RFC5440] requested 3: Generalized bandwidth [RFC8779, Section 2.3] 4: Generalized bandwidth of an existing TE-LSP for which a [RFC8779, Section 2.3] reoptimization is requested 5-15: Unassigned 6 METRIC 0: Reserved [RFC5440][RFC Errata 4956] 1: Metric [RFC5440] 2-15: Unassigned 7 ERO 0: Reserved [RFC5440][RFC Errata 4956] 1: Explicit Route [RFC5440] 2-15: Unassigned 8 RRO 0: Reserved [RFC5440][RFC Errata 4956] 1: Recorded Route [RFC5440] 2-15: Unassigned 9 LSPA 0: Reserved [RFC5440][RFC Errata 4956] 1: LSP Attributes [RFC5440] 2-15: Unassigned 10 IRO 0: Reserved [RFC5440][RFC Errata 4956] 1: Include Route [RFC5440] 2-15: Unassigned 11 SVEC 0: Reserved [RFC5440][RFC Errata 4956] 1: Synchronization Vector [RFC5440] 2-15: Unassigned 12 NOTIFICATION 0: Reserved [RFC5440][RFC Errata 4956] 1: Notification [RFC5440] 2-15: Unassigned 13 PCEP-ERROR 0: Reserved [RFC5440][RFC Errata 4956] 1: PCEP Error [RFC5440] 2-15: Unassigned 14 LOAD-BALANCING 0: Reserved [RFC5440][RFC Errata 4956] 1: Load Balancing [RFC5440] 2: Generalized Load Balancing [RFC8779, Section 2.4] 3-15: Unassigned 15 CLOSE 0: Reserved [RFC5440][RFC Errata 4956] 1: Close [RFC5440] 2-15: Unassigned 16 PATH-KEY 0: Reserved [RFC5520][RFC Errata 4956] 1: Path Key [RFC5520] 2-15: Unassigned 17 XRO 0: Reserved [RFC5521][RFC Errata 4956] 1: Route exclusion [RFC5521] 2-15: Unassigned 18 Unassigned 0: Reserved [RFC Errata 4956] 1-15: Unassigned 19 MONITORING 0: Reserved [RFC5886][RFC Errata 4956] 1: Monitoring [RFC5886] 2-15: Unassigned 20 PCC-REQ-ID 0: Reserved [RFC5886][RFC Errata 4956] 1: IPV4 Addresses [RFC5886] 2: IPV6 Addresses [RFC5886] 3-15: Unassigned 21 OF 0: Reserved [RFC5541][RFC Errata 4956] 1: Objective Function [RFC5541] 2-15: Unassigned 22 CLASSTYPE 0: Reserved [RFC5455][RFC Errata 4956] 1: Class-Type [RFC5455] 2-15: Unassigned 23 Unassigned 0: Reserved [RFC Errata 4956] 1-15: Unassigned 24 GLOBAL-CONSTRAINTS 0: Reserved [RFC5557][RFC Errata 4956] 1: Global Constraints [RFC5557] 2-15: Unassigned 25 PCE-ID 0: Reserved [RFC5886][RFC Errata 4956] 1: IPV4 Addresses [RFC5886] 2: IPV6 Addresses [RFC5886] 3-15: Unassigned 26 PROC-TIME 0: Reserved [RFC5886][RFC Errata 4956] 1: PROC-TIME [RFC5886] 2-15: Unassigned 27 OVERLOAD 0: Reserved [RFC5886][RFC Errata 4956] 1: overload [RFC5886] 2-15: Unassigned 28 UNREACH-DESTINATION 0: Reserved [RFC8306] 1: IPv4 [RFC8306] 2: IPv6 [RFC8306] 3-15: Unassigned 29 SERO 0: Reserved [RFC8306] 1: SERO [RFC8306] 2-15: Unassigned 30 SRRO 0: Reserved [RFC8306] 1: SRRO [RFC8306] 2-15: Unassigned 31 BNC 0: Reserved [RFC8306] 1: Branch node list [RFC8306] 2: Non-branch node list [RFC8306] 3-15: Unassigned 32 LSP 0: Reserved [RFC8231] 1: LSP [RFC8231] 2-15: Unassigned 33 SRP 0: Reserved [RFC8231] 1: SRP [RFC8231] 2-15: Unassigned 34 VENDOR-INFORMATION 0: Reserved [RFC7470][RFC Errata 4956] 1: Vendor-Specific Constraints [RFC7470] 2-15: Unassigned 35 BU 0: Reserved [RFC8233][RFC Errata 4956] 1: BU [RFC8233] 2-15: Unassigned 36 INTER-LAYER 0: Reserved [RFC8282] 1: Inter-layer [RFC8282] 2-15: Unassigned 37 SWITCH-LAYER 0: Reserved [RFC8282] 1: Switch-layer [RFC8282] 2-15: Unassigned 38 REQ-ADAP-CAP 0: Reserved [RFC8282] 1: Req-Adap-Cap [RFC8282] 2-15: Unassigned 39 SERVER-INDICATION 0: Reserved [RFC8282] 1: Server-indication [RFC8282] 2-15: Unassigned 40 ASSOCIATION 0: Reserved [RFC8697] 1: IPv4 [RFC8697] 2: IPv6 [RFC8697] 3-15: Unassigned 41 S2LS 0: Reserved [RFC8623] 1: S2LS [RFC8623] 2-15: Unassigned 42 WA 0: Reserved [RFC8780] 1: Wavelength Assignment [RFC8780] 2-15: Unassigned 43 FLOWSPEC 0: Reserved [RFC9168] 1: Flow Specification [RFC9168] 2-15: Unassigned 44 CCI Object-Type 0: Reserved [RFC9050] 1: MPLS Label [RFC9050] 2: Native IP [RFC-ietf-pce-pcep-extension-native-ip-39] 3: SR P2MP Policy (TEMPORARY - registered 2024-08-27, expires [draft-ietf-pce-sr-p2mp-policy-09] 2025-08-27) 4-15: Unassigned PATH-ATTRIB (TEMPORARY - registered 2022-05-09, 45 extension registered 2024-04-25, expires 0: Reserved [draft-ietf-pce-multipath-07] 2025-05-09) 1: PATH-ATTRIB [draft-ietf-pce-multipath-07] 2-15: Unassigned 46 BGP Peer Info Object-Type 0: Reserved [RFC-ietf-pce-pcep-extension-native-ip-39] 1: IPv4 address [RFC-ietf-pce-pcep-extension-native-ip-39] 2: IPv6 address [RFC-ietf-pce-pcep-extension-native-ip-39] 3-15: Unassigned 47 Explicit Peer Route Object-Type 0: Reserved [RFC-ietf-pce-pcep-extension-native-ip-39] 1: IPv4 address [RFC-ietf-pce-pcep-extension-native-ip-39] 2: IPv6 address [RFC-ietf-pce-pcep-extension-native-ip-39] 3-15: Unassigned 48 Peer Prefix Advertisement Object-Type 0: Reserved [RFC-ietf-pce-pcep-extension-native-ip-39] 1: IPv4 address [RFC-ietf-pce-pcep-extension-native-ip-39] 2: IPv6 address [RFC-ietf-pce-pcep-extension-native-ip-39] 3-15: Unassigned 49-247 Unassigned 0: Reserved [RFC Errata 4956] 1-15: Unassigned 248-255 Experimental Use 0-15: Experimental Use [RFC8356] PCEP Message Common Header Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-4 Unassigned Open Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-4 Unassigned RP Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-14 Unassigned 15-16 Routing Granularity (RG) [RFC8779, Section 2.2] 17 Core-tree computation (C-bit) [RFC7334] 18 Fragmentation (F-bit) [RFC8306] 19 P2MP (N-bit) [RFC8306] 20 ERO-compression (E-bit) [RFC8306] 21 Make-before-break (M-bit) [RFC5557] 22 Report the request order (D-bit) [RFC5557] 23 Path Key (P-bit) [RFC5520] 24 Supply OF on response [RFC5541] 25 VSPT [RFC5441] 26 Strict/Loose [RFC5440] 27 Bi-directional [RFC5440] 28 Reoptimization [RFC5440] 29-31 Priority [RFC5440] NO-PATH Object NI Field Registration Procedure(s) IETF Review Reference [RFC5440] Available Formats [IMG] CSV Value Description Reference 0 No path satisfying the set of constraints could be found [RFC5440] 1 PCE chain broken [RFC5440] 2-255 Unassigned NO-PATH Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0 Unsatisfied constrained indicated [RFC5440] 1-15 Unassigned METRIC Object T Field Registration Procedure(s) IETF Review Reference [RFC5440] Available Formats [IMG] CSV Value Description Reference 0 Reserved [RFC5440] 1 IGP metric [RFC5440] 2 TE metric [RFC5440] 3 Hop Counts [RFC5440] 4 Aggregate bandwidth consumption [RFC5541] 5 Load of the most loaded link [RFC5541] 6 Cumulative IGP cost [RFC5541] 7 Cumulative TE cost [RFC5541] 8 P2MP IGP metric [RFC8306] 9 P2MP TE metric [RFC8306] 10 P2MP hop count metric [RFC8306] 11 Segment-ID (SID) Depth. [RFC8664] 12 Path Delay metric [RFC8233] 13 Path Delay Variation metric [RFC8233] 14 Path Loss metric [RFC8233] 15 P2MP Path Delay metric [RFC8233] 16 P2MP Path Delay variation metric [RFC8233] 17 P2MP Path Loss metric [RFC8233] 18 Number of adaptations on a path [RFC8282] 19 Number of layers on a path [RFC8282] 20 Domain Count metric [RFC8685] 21 Border Node Count metric [RFC8685] 22 Path Min Delay Metric (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, expires [draft-ietf-pce-sid-algo-12] 2025-09-13) 23 P2MP Path Min Delay Metric (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, expires [draft-ietf-pce-sid-algo-12] 2025-09-13) 24 Path Bandwidth Metric (TEMPORARY - registered 2024-07-30, expires 2025-07-30) [draft-ietf-pce-sid-algo-12] 25 P2MP Path Bandwidth Metric (TEMPORARY - registered 2024-07-30, expires 2025-07-30) [draft-ietf-pce-sid-algo-12] 26-127 Unassigned 128-255 User Defined Metric (TEMPORARY - registered 2024-07-30, expires 2025-07-30) [draft-ietf-pce-sid-algo-12] METRIC Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-5 Unassigned 6 Computed metric [RFC5440] 7 Bound [RFC5440] LSPA Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-5 Unassigned 6 Protection Enforcement [RFC9488] 7 Local Protection Desired [RFC5440] IRO Subobjects Registration Procedure(s) IETF Review Reference [RFC5521] Available Formats [IMG] CSV Value Description Reference 1 IPv4 prefix [RFC3209] 2 IPv6 prefix [RFC3209] 3 Unassigned 4 Unnumbered Interface ID [RFC3477] 5 4-byte AS number [RFC7897][RFC7898] 6 OSPF Area ID [RFC7897][RFC7898] 7 IS-IS Area ID [RFC7897][RFC7898] 8 Optical Interface Class List [RFC8780] 9 Client Signal Information [RFC8780] 10 Label [RFC8779] 11-31 Unassigned 32 Autonomous system number [RFC3209] 33 Explicit Exclusion Route subobject (EXRS) [RFC4874] 34-127 Unassigned SVEC Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-17 Unassigned 18 Domain Diverse O-bit [RFC8685] 19 Partial Path Diverse [RFC8306] 20 Link Direction Diverse [RFC8306] 21 SRLG Diverse [RFC5440] 22 Node Diverse [RFC5440] 23 Link Diverse [RFC5440] Notification Object Registration Procedure(s) IETF Review Reference [RFC5440] Available Formats [IMG] CSV Notification-type Name Notification-value Reference 0 Reserved 1-255: Reserved [RFC5440] 1 Pending Request cancelled 1: PCC cancels a set of pending requests [RFC5440] 2: PCE cancels a set of pending requests [RFC5440] 3-255: Unassigned 2 PCE Congestion 1: PCE in congested state [RFC5440] 2: PCE no longer in congested state [RFC5440] 3-255: Unassigned 3 Unassigned 1-255: Unassigned 4 Stateful PCE resource limit exceeded 0: Unassigned 1: Entering resource limit exceeded state [RFC8231] 2: Deprecated [RFC8231] 3-255: Unassigned 5 Auto-Bandwidth Overwhelm State 0: Unassigned 1: Entering Auto-Bandwidth Overwhelm State [RFC8733] 2: Clearing Auto-Bandwidth Overwhelm State [RFC8733] 3-255: Unassigned 6-255 Unassigned 1-255: Unassigned Notification Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-7 Unassigned PCEP-ERROR Object Error Types and Values Registration Procedure(s) IETF Review Reference [RFC5440] Available Formats [IMG] CSV Error-Type Meaning Error-value Reference 0 Reserved 0-255: Reserved [RFC5440] 1 PCEP session establishment 0: Unassigned [RFC5440] failure 1: reception of an invalid Open message or a non Open [RFC5440] message. 2: no Open message received before the expiration of the [RFC5440] OpenWait timer 3: unacceptable and non negotiable session [RFC5440] characteristics 4: unacceptable but negotiable session characteristics [RFC5440] 5: reception of a second Open message with still [RFC5440] unacceptable session characteristics 6: reception of a PCErr message proposing unacceptable [RFC5440] session characteristics 7: No Keepalive or PCErr message received before the [RFC5440] expiration of the KeepWait timer 8: PCEP version not supported [RFC5440] 9-255: Unassigned 2 Capability not supported 0-255: Unassigned [RFC5440] 3 Unknown Object 0: Unassigned [RFC5440] 1: Unrecognized object class [RFC5440] 2: Unrecognized object Type [RFC5440] 3-255: Unassigned 4 Not supported object 0: Unassigned [RFC5440] 1: Not supported object class [RFC5440] 2: Not supported object Type [RFC5440] 3: Unassigned 4: Unsupported parameter [RFC5441] 5: Unsupported network performance constraint [RFC8233] 6: BANDWIDTH object type 3 or 4 not supported [RFC8779] 7: Unsupported endpoint type in END-POINTS Generalized [RFC8779] Endpoint object type 8: Unsupported TLV present in END-POINTS Generalized [RFC8779] Endpoint object type 9: Unsupported granularity in the RP object flags [RFC8779] 10-255: Unassigned 5 Policy violation 0: Unassigned [RFC5440] 1: C bit of the METRIC object set (request rejected) [RFC5440] 2: O bit of the RP object cleared (request rejected) [RFC5440] 3: objective function not allowed (request rejected) [RFC5541] 4: OF bit of the RP object set (request rejected) [RFC5541] 5: Global concurrent optimization not allowed [RFC5557] 6: Monitoring message supported but rejected due to [RFC5886] policy violation 7: P2MP Path computation is not allowed [RFC8306] 8: Not allowed network performance constraint [RFC8233] 9-255: Unassigned 6 Mandatory Object missing 0: Unassigned [RFC5440] 1: RP object missing [RFC5440] 2: RRO missing for a reoptimization request (R bit of [RFC5440] the RP object set) 3: END-POINTS object missing [RFC5440] 4: MONITORING object missing [RFC5886] 5-7: Unassigned 8: LSP object missing [RFC8231] 9: ERO object missing [RFC8231] 10: SRP object missing [RFC8231] 11: LSP-IDENTIFIERS TLV missing [RFC8231] 12: LSP-DB-VERSION TLV missing [RFC8232] 13: S2LS object missing [RFC8623] 14: P2MP-LSP-IDENTIFIERS TLV missing [RFC8623] 15: DISJOINTNESS-CONFIGURATION TLV missing [RFC8800] 16: Scheduled TLV missing [RFC8934] 17: CCI object missing [RFC9050] 18: VIRTUAL-NETWORK-TLV missing [RFC9358] 19: Native IP object missing [RFC-ietf-pce-pcep-extension-native-ip-39] 20: LABEL-REQUEST TLV missing [RFC9504] 21: Missing SR Policy Mandatory TLV (TEMPORARY - [draft-ietf-pce-segment-routing-policy-cp-14] registered 2024-02-13, expires 2025-02-13) 22-255: Unassigned 7 Synchronized path computation 0-255: Unassigned [RFC5440] request missing 8 Unknown request reference 0-255: Unassigned [RFC5440] 9 Attempt to establish a second 0-255: Unassigned [RFC5440] PCEP session 10 Reception of an invalid object 0: Unassigned [RFC5440] 1: Reception of an object with P flag not set although [RFC5440] the P-flag must be set according to this specification. 2: Bad label value [RFC8664] 3: Unsupported number of SR-ERO subobjects [RFC8664] 4: Bad label format [RFC8664] 5: ERO mixes SR-ERO subobjects with other subobject [RFC8664] types 6: Both SID and NAI are absent in the SR-ERO subobject [RFC8664] 7: Both SID and NAI are absent in the SR-RRO subobject [RFC8664] 8: SYMBOLIC-PATH-NAME TLV missing [RFC8281] 9: MSD exceeds the default for the PCEP session [RFC8664] 10: RRO mixes SR-RRO subobjects with other subobject [RFC8664] types 11: Malformed object [RFC8408] 12: Missing PCE-SR-CAPABILITY sub-TLV [RFC8664] 13: Unsupported NAI Type in the SR-ERO/SR-RRO subobject [RFC8664] 14: Unknown SID [RFC8664] 15: NAI cannot be resolved to a SID [RFC8664] 16: Could not find SRGB [RFC8664] 17: SID index exceeds SRGB size [RFC8664] 18: Could not find SRLB [RFC8664] 19: SID index exceeds SRLB size [RFC8664] 20: Inconsistent SIDs in SR-ERO / SR-RRO subobjects [RFC8664] 21: MSD must be nonzero [RFC8664] 22: Mismatch of O field in S2LS and LSP object [RFC8623] 23: Incompatible OF codes in H-PCE [RFC8685] 24: Bad BANDWIDTH object type 3 or 4 [RFC8779] 25: Unsupported LSP Protection Flags in [RFC8779] PROTECTION-ATTRIBUTE TLV 26: Unsupported Secondary LSP Protection Flags in [RFC8779] PROTECTION-ATTRIBUTE TLV 27: Unsupported Link Protection Type in [RFC8779] PROTECTION-ATTRIBUTE TLV 28: LABEL-SET TLV present with O bit set but without R [RFC8779] bit set in RP 29: Wrong LABEL-SET TLV present with O and L bits set [RFC8779] 30: Wrong LABEL-SET TLV present with O bit set and wrong [RFC8779] format 31: Missing GMPLS-CAPABILITY TLV [RFC8779] 32: Incompatible OF code [RFC8800] 33: Missing PCECC Capability sub-TLV [RFC9050] 34: Missing PCE-SRv6-CAPABILITY sub-TLV [RFC9603] 35: Both SID and NAI are absent in SRv6-RRO subobject [RFC9603] 36: RRO mixes SRv6-RRO subobjects with other subobject [RFC9603] types 37: Invalid SRv6 SID Structure [RFC9603] 38: Conflicting Path ID (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires [draft-ietf-pce-multipath-07] 2025-05-09) 39: PCECC NATIVE-IP-TE-CAPABILITY bit is not set [RFC-ietf-pce-pcep-extension-native-ip-39] 40: Unsupported number of SRv6-ERO subobjects [RFC9603] 41: Unsupported NAI Type in the SRv6-ERO/SRv6-RRO [RFC9603] subobject 42: Both SID and NAI are absent in the SRv6-ERO [RFC9603] subobject 43: ERO mixes SRv6-ERO subobjects with other subobject [RFC9603] types 44-255: Unassigned 11 Unrecognized EXRS subobject 0-255: Unassigned [RFC5521] 12 Diffserv-aware TE error 0: Unassigned [RFC5455] 1: Unsupported class-type [RFC5455] 2: Invalid class-type [RFC5455] 3: Class-Type and setup priority do not form a [RFC5455] configured TE-class 4-255: Unassigned 13 BRPC procedure completion 0: Unassigned [RFC5441] failure 1: BRPC procedure not supported by one or more PCEs [RFC5441] along the domain path 2-255: Unassigned 14 Unassigned 0-255: Unassigned 15 Global Concurrent Optimization 0: Unassigned [RFC5557] Error 1: Insufficient memory [RFC5557] 2: Global concurrent optimization not supported [RFC5557] 3-255: Unassigned 16 P2MP Capability Error 0: Unassigned [RFC8306] 1: The PCE cannot satisfy the request due to [RFC8306] insufficient memory 2: The PCE is not capable of P2MP computation [RFC8306] 3-255: Unassigned 17 P2MP END-POINTS Error 0: Unassigned [RFC8306] 1: The PCE cannot satisfy the request due to no [RFC8306] END-POINTS with leaf type 2 2: The PCE cannot satisfy the request due to no [RFC8306] END-POINTS with leaf type 3 3: The PCE cannot satisfy the request due to no [RFC8306] END-POINTS with leaf type 4 4: The PCE cannot satisfy the request due to [RFC8306] inconsistent END-POINTS 5-255: Unassigned 18 P2MP Fragmentation Error 0: Unassigned [RFC8306] 1: Fragmented request failure [RFC8306] 2: Fragmented Report failure [RFC8623] 3: Fragmented Update failure [RFC8623] 4: Fragmented Instantiation failure [RFC8623] 5-255: Unassigned 19 Invalid Operation 0: Unassigned [RFC8231] 1: Attempted LSP Update Request for a non-delegated LSP. The PCEP-ERROR object is followed by the LSP object that [RFC8231] identifies the LSP. 2: Attempted LSP Update Request if the stateful PCE [RFC8231] capability was not advertised. 3: Attempted LSP Update Request for an LSP identified by [RFC8231] an unknown PLSP-ID. 4: Unassigned 5: Attempted LSP State Report if active stateful PCE [RFC8231] capability was not advertised. 6: PCE-initiated LSP limit reached [RFC8281] 7: Delegation for PCE-initiated LSP cannot be revoked [RFC8281] 8: Non-zero PLSP-ID in LSP Initiate Request [RFC8281] 9: LSP is not PCE initiated [RFC8281] 10: PCE-initiated operation-frequency limit reached [RFC8281] 11: Attempted LSP State Report for P2MP if stateful PCE [RFC8623] capability for P2MP was not advertised 12: Attempted LSP Update Request for P2MP if active [RFC8623] stateful PCE capability for P2MP was not advertised 13: Attempted LSP Instantiation Request for P2MP if stateful PCE instantiation capability for P2MP was not [RFC8623] advertised 14: Auto-Bandwidth capability was not advertised [RFC8733] 15: Attempted LSP scheduling while the scheduling [RFC8934] capability was not advertised 16: Attempted PCECC operations when PCECC capability was [RFC9050] not advertised 17: Stateful PCE capability was not advertised [RFC9050] 18: Unknown Label [RFC9050] 19: Attempted SRv6 when the capability was not [RFC9603] advertised 20: Not supported path backup (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires [draft-ietf-pce-multipath-07] 2025-05-09) 21: Non-empty path (TEMPORARY - registered 2022-05-09, [draft-ietf-pce-multipath-07] extension registered 2024-04-25, expires 2025-05-09) 22: Only one BPI, EPR or PPA object can be included in [RFC-ietf-pce-pcep-extension-native-ip-39] this message 23: LSP state info unavailable for reoptimization [RFC9504] 24: LSP state info for route exclusion not found [RFC9504] 25: Attempted LSP update request for GMPLS if stateful [RFC9504] PCE capability not advertised 26: Attempted LSP State Report for GMPLS if stateful PCE [RFC9504] capability not advertised 27: Attempted LSP instantiation request for GMPLS if [RFC9504] stateful PCE instantiation capability not advertised 28: Use of the Generalized Endpoint object type for [RFC9504] non-GMPLS LSPs 29: Attempted Native-IP operations when the capability [RFC-ietf-pce-pcep-extension-native-ip-39] was not advertised 30: Unknown Native-IP Info [RFC-ietf-pce-pcep-extension-native-ip-39] 31-255: Unassigned 20 LSP State Synchronization 0: Unassigned [RFC8231] Error 1: A PCE indicates to a PCC that it cannot process (an otherwise valid) LSP State Report. The PCEP- ERROR [RFC8231] object is followed by the LSP object that identifies the LSP. 2: LSP-DB version mismatch. [RFC8232] 3: Attempt to trigger synchronization before PCE [RFC8232] trigger. 4: Attempt to trigger a synchronization when the PCE triggered synchronization capability has not been [RFC8232] advertised. 5: A PCC indicates to a PCE that it cannot complete the [RFC8231] State Synchronization. 6: Received an invalid LSP-DB Version Number. [RFC8232] 7: Received an invalid Speaker Entity Identifier. [RFC8232] 8-255: Unassigned 21 Invalid traffic engineering 0: Unassigned [RFC8408] path setup type 1: Unsupported path setup type [RFC8408] 2: Mismatched path setup type [RFC8408] 3-255: Unassigned 22 Unassigned 0-255: Unassigned 23 Bad parameter value 0: Unassigned [RFC8281] 1: SYMBOLIC-PATH-NAME in use [RFC8281] 2: Speaker identity included for an LSP that is not PCE [RFC8281] initiated 3-255: Unassigned 24 LSP instantiation error 0: Unassigned [RFC8281] 1: Unacceptable instantiation parameters [RFC8281] 2: Internal error [RFC8281] 3: Signaling error [RFC8281] 4-255: Unassigned 25 PCEP StartTLS failure 0: Unassigned [RFC8253] 1: Reception of StartTLS after any PCEP exchange [RFC8253] 2: Reception of any other message apart from StartTLS, [RFC8253] Open, or PCErr 3: Failure, connection without TLS is not possible [RFC8253] 4: Failure, connection without TLS is possible [RFC8253] 5: No StartTLS message (nor PCErr/Open) before [RFC8253] StartTLSWait timer expiry 6-255: Unassigned 26 Association Error 0: Unassigned [RFC8697] 1: Association Type is not supported [RFC8697] 2: Too many LSPs in the association group [RFC8697] 3: Too many association groups [RFC8697] 4: Association unknown [RFC8697] 5: Operator-configured association information mismatch [RFC8697] 6: Association information mismatch [RFC8697] 7: Cannot join the association group [RFC8697] 8: Association ID not in range [RFC8697] 9: Tunnel ID or End points mismatch for Path Protection [RFC8745] Association 10: Attempt to add another working/protection LSP for [RFC8745] Path Protection Association 11: Protection type is not supported [RFC8745] 12: Not expecting policy parameters [RFC9005] 13: Unacceptable policy parameters [RFC9005] 14: Association group mismatch [RFC9059] 15: Tunnel mismatch in the association group [RFC9059] 16: Path Setup Type not supported [RFC9059] 17: Bidirectional LSP direction mismatch [RFC9059] 18: Bidirectional LSP co-routed mismatch [RFC9059] 19: Endpoint mismatch in the association group [RFC9059] 20: SR Policy Identifers Mismatch (TEMPORARY - [draft-ietf-pce-segment-routing-policy-cp-14] registered 2024-02-13, expires 2025-02-13) 21: SR Policy Candidate Path Identifier Mismatch [draft-ietf-pce-segment-routing-policy-cp-14] (TEMPORARY - registered 2024-02-13, expires 2025-02-13) 22-255: Unassigned 27 WSON RWA error 0: Unassigned [RFC8780] 1: Insufficient memory [RFC8780] 2: RWA computation not supported [RFC8780] 3: Syntactical encoding error [RFC8780] 4-255: Unassigned 28 H-PCE Error 0: Unassigned [RFC8685] 1: H-PCE Capability not advertised [RFC8685] 2: Parent PCE Capability cannot be provided [RFC8685] 3-255: Unassigned 29 Path computation failure 0: Unassigned [RFC8779] 1: Unacceptable request message [RFC8779] 2: Generalized bandwidth value not supported [RFC8779] 3: Label set constraint could not be met [RFC8779] 4: Label constraint could not be met [RFC8779] 5: Constraints could not be met for some intervals [RFC8934] 6-255: Unassigned 30 FlowSpec error 0: Unassigned [RFC9168] 1: Unsupported FlowSpec [RFC9168] 2: Malformed FlowSpec [RFC9168] 3: Unresolvable Conflict [RFC9168] 4: Unknown FlowSpec [RFC9168] 5: Unsupported LPM Route [RFC9168] 6-255: Unassigned 31 PCECC failure 0: Unassigned [RFC9050] 1: Label out of range [RFC9050] 2: Instruction failed [RFC9050] 3: Invalid CCI [RFC9050] 4: Unable to allocate the specified CCI [RFC9050] 5: Invalid next-hop information [RFC9050] 6-255: Unassigned 32 Binding label/SID failure 0: Unassigned [RFC9604] 1: Invalid SID [RFC9604] 2: Unable to allocate the specified binding value [RFC9604] 3: Unable to allocate a new binding label/SID [RFC9604] 4: Unable to remove the binding value [RFC9604] 5: Inconsistent binding types [RFC9604] 6-255: Unassigned 33 Native IP TE failure 0: Unassigned [RFC-ietf-pce-pcep-extension-native-ip-39] 1: Local IP is in use [RFC-ietf-pce-pcep-extension-native-ip-39] 2: Remote IP is in use [RFC-ietf-pce-pcep-extension-native-ip-39] 3: Explicit Peer Route Error [RFC-ietf-pce-pcep-extension-native-ip-39] 4: EPR/BPI Peer Info mismatch [RFC-ietf-pce-pcep-extension-native-ip-39] 5: BPI/PPA Address Family mismatch [RFC-ietf-pce-pcep-extension-native-ip-39] 6: PPA/BPI Peer Info mismatch [RFC-ietf-pce-pcep-extension-native-ip-39] 7-255: Unassigned 34-255 Unassigned 0-255: Unassigned PCEP-ERROR Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-7 Unassigned LOAD-BALANCING Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-7 Unassigned CLOSE Object Reason Field Registration Procedure(s) IETF Review Reference [RFC5440] Available Formats [IMG] CSV Value Description Reference 0 Reserved [RFC5440] 1 No explanation provided [RFC5440] 2 DeadTimer expired [RFC5440] 3 Reception of a malformed PCEP message [RFC5440] 4 Reception of an unacceptable number of unknown requests/replies [RFC5440] 5 Reception of an unacceptable number of unrecognized PCEP messages [RFC5440] 6-255 Unassigned CLOSE Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-7 Unassigned PATH-KEY Subobjects Registration Procedure(s) IETF Review Reference [RFC5520] Available Formats [IMG] CSV Value Description Reference 1-63 Unassigned 64 Path Key with 32-bit PCE ID [RFC5520] 65 Path Key with 128-bit PCE ID [RFC5520] 66-127 Unassigned XRO Subobjects Registration Procedure(s) IETF Review Reference [RFC5521] Available Formats [IMG] CSV Value Description Reference 1 IPv4 prefix [RFC3209] 2 IPv6 prefix [RFC3209] 3 Unassigned 4 Unnumbered Interface ID [RFC3477] 5 4-byte AS number [RFC7897][RFC7898] 6 OSPF Area ID [RFC7897][RFC7898] 7 IS-IS Area ID [RFC7897][RFC7898] 8 Optical Interface Class List [RFC8780] 9 Client Signal Information [RFC8780] 10 Label [RFC8779] 11 LSP [RFC9504] 12-31 Unassigned 32 Autonomous system number [RFC3209] 33 Unassigned 34 SRLG [RFC4874] 35-63 Unassigned 64 IPv4 Path Key [RFC5520] 65 IPv6 Path Key [RFC5520] 66-127 Unassigned XRO Flag Field Registration Procedure(s) IETF Review Reference [RFC5521] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-14 Unassigned 15 Fail (F-bit) [RFC5521] Objective Function Reference [RFC5541] Available Formats [IMG] CSV Range Registration Procedures 1-1023 IETF Review 1024-32767 First Come First Served 32768-65535 Reserved for Private Use Code Point Name Reference 0 Reserved [RFC5541] 1 MCP [RFC5541] 2 MLP [RFC5541] 3 MBP [RFC5541] 4 MBC [RFC5541] 5 MLL [RFC5541] 6 MCC [RFC5541] 7 SPT [RFC8306] 8 MCT [RFC8306] 9 Minimum Packet Loss Path (MPLP) [RFC8233] 10 Maximum Under-Utilized Path (MUP) [RFC8233] 11 Maximum Reserved Under-Utilized Path (MRUP) [RFC8233] 12 Minimize the number of Transit Domains (MTD) [RFC8685] 13 Minimize the number of Border Nodes (MBN) [RFC8685] 14 Minimize the number of Common Transit Domains (MCTD) [RFC8685] 15 Minimize the number of Shared Links (MSL) [RFC8800] 16 Minimize the number of Shared SRLGs (MSS) [RFC8800] 17 Minimize the number of Shared Nodes (MSN) [RFC8800] 18-32767 Unassigned 32768-65535 Reserved for Private Use [RFC5541] PCEP TLV Type Indicators Reference [RFC5440] Available Formats [IMG] CSV Range Registration Procedures 0-65503 IETF Review 65504-65535 Experimental Use Value Description Reference 0 Reserved [RFC5440] 1 NO-PATH-VECTOR TLV [RFC5440] 2 OVERLOAD-DURATION TLV [RFC5440] 3 REQ-MISSING TLV [RFC5440] 4 OF-List [RFC5541] 5 Order TLV [RFC5557] 6 P2MP capable [RFC8306] 7 VENDOR-INFORMATION-TLV [RFC7470] 8 Wavelength Selection [RFC8780] 9 Wavelength Restriction [RFC8780] 10 Wavelength Allocation [RFC8780] 11 Optical Interface Class List [RFC8780] 12 Client Signal Information [RFC8780] 13 H-PCE-CAPABILITY [RFC8685] 14 Domain-ID [RFC8685] 15 H-PCE-FLAG [RFC8685] 16 STATEFUL-PCE-CAPABILITY [RFC8231] 17 SYMBOLIC-PATH-NAME [RFC8231] 18 IPV4-LSP-IDENTIFIERS [RFC8231] 19 IPV6-LSP-IDENTIFIERS [RFC8231] 20 LSP-ERROR-CODE [RFC8231] 21 RSVP-ERROR-SPEC [RFC8231] 22 Unassigned 23 LSP-DB-VERSION [RFC8232] 24 SPEAKER-ENTITY-ID [RFC8232] 25 Unassigned 26 SR-PCE-CAPABILITY (deprecated) [RFC8664] 27 Unassigned 28 PATH-SETUP-TYPE [RFC8408] 29 Operator-configured Association Range [RFC8697] 30 Global Association Source [RFC8697] 31 Extended Association ID [RFC8697] 32 P2MP-IPV4-LSP-IDENTIFIERS [RFC8623] 33 P2MP-IPV6-LSP-IDENTIFIERS [RFC8623] 34 PATH-SETUP-TYPE-CAPABILITY [RFC8408] 35 ASSOC-Type-List [RFC8697] 36 AUTO-BANDWIDTH-CAPABILITY [RFC8733] 37 AUTO-BANDWIDTH-ATTRIBUTES [RFC8733] 38 Path Protection Association Group TLV [RFC8745] 39 IPV4-ADDRESS [RFC8779, Section 2.5.2.1] 40 IPV6-ADDRESS [RFC8779, Section 2.5.2.2] 41 UNNUMBERED-ENDPOINT [RFC8779, Section 2.5.2.3] 42 LABEL-REQUEST [RFC8779, Section 2.5.2.4] 43 LABEL-SET [RFC8779, Section 2.5.2.5] 44 PROTECTION-ATTRIBUTE [RFC8779, Section 2.8] 45 GMPLS-CAPABILITY [RFC8779, Section 2.1.2] 46 DISJOINTNESS-CONFIGURATION [RFC8800] 47 DISJOINTNESS-STATUS [RFC8800] 48 POLICY-PARAMETERS-TLV [RFC9005] 49 SCHED-LSP-ATTRIBUTE [RFC8934] 50 SCHED-PD-LSP-ATTRIBUTE [RFC8934] 51 PCE-FLOWSPEC-CAPABILITY TLV [RFC9168] 52 FLOW FILTER TLV [RFC9168] 53 Unassigned 54 Bidirectional LSP Association Group TLV [RFC9059] 55 TE-PATH-BINDING [RFC9604] 56 SRPOLICY-POL-NAME (TEMPORARY - registered 2021-03-30, extension registered [draft-ietf-pce-segment-routing-policy-cp-14] 2024-02-15, expires 2025-03-30) 57 SRPOLICY-CPATH-ID (TEMPORARY - registered 2021-03-30, extension registered [draft-ietf-pce-segment-routing-policy-cp-14] 2024-02-15, expires 2025-03-30) 58 SRPOLICY-CPATH-NAME (TEMPORARY - registered 2021-03-30, extension registered [draft-ietf-pce-segment-routing-policy-cp-14] 2024-02-15, expires 2025-03-30) 59 SRPOLICY-CPATH-PREFERENCE (TEMPORARY - registered 2021-03-30, extension registered [draft-ietf-pce-segment-routing-policy-cp-14] 2024-02-15, expires 2025-03-30) 60 MULTIPATH-CAP (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, [draft-ietf-pce-multipath-07] expires 2025-05-09) 61 MULTIPATH-WEIGHT (TEMPORARY - registered 2022-05-09, extension registered [draft-ietf-pce-multipath-07] 2024-04-25, expires 2025-05-09) 62 MULTIPATH-BACKUP (TEMPORARY - registered 2022-05-09, extension registered [draft-ietf-pce-multipath-07] 2024-04-25, expires 2025-05-09) 63 MULTIPATH-OPPDIR-PATH (TEMPORARY - registered 2022-05-09, extension registered [draft-ietf-pce-multipath-07] 2024-04-25, expires 2025-05-09) 64 LSP-EXTENDED-FLAG [RFC9357] 65 VIRTUAL-NETWORK-TLV [RFC9358] 66 SR-Algorithm (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, [draft-ietf-pce-sid-algo-12] expires 2025-09-13) 67 Color (TEMPORARY - registered 2023-10-30, expires 2024-10-30) [draft-ietf-pce-pcep-color-02] 68 COMPUTATION-PRIORITY (TEMPORARY - registered 2024-02-13, expires 2025-02-13) [draft-ietf-pce-segment-routing-policy-cp-14] 69 EXPLICIT-NULL-LABEL-POLICY (TEMPORARY - registered 2024-02-13, expires 2025-02-13) [draft-ietf-pce-segment-routing-policy-cp-14] 70 INVALIDATION (TEMPORARY - registered 2024-02-13, expires 2025-02-13) [draft-ietf-pce-segment-routing-policy-cp-14] 71 SRPOLICY-CAPABILITY (TEMPORARY - registered 2024-02-13, expires 2025-02-13) [draft-ietf-pce-segment-routing-policy-cp-14] 72 PATH-RECOMPUTATION TLV (TEMPORARY - registered 2024-02-23, expires 2025-02-23) [draft-ietf-pce-circuit-style-pcep-extensions-03] 73 SR-P2MP-POLICY-CAPABILITY (TEMPORARY - registered 2024-08-27, expires 2025-08-27) [draft-ietf-pce-sr-p2mp-policy-09] 74 IPV4-SR-P2MP-INSTANCE-ID TLV (TEMPORARY - registered 2024-08-27, expires [draft-ietf-pce-sr-p2mp-policy-09] 2025-08-27) 75 IPV6-SR-P2MP-INSTANCE-ID TLV (TEMPORARY - registered 2024-08-27, expires [draft-ietf-pce-sr-p2mp-policy-09] 2025-08-27) 76-65503 Unassigned 65504-65535 Experimental Use [RFC8356] NO-PATH-VECTOR TLV Flag Field Registration Procedure(s) IETF Review Reference [RFC5440] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-9 Unassigned 10 Requested disjoint computation not supported [RFC8800] 11 Disjoint path not found [RFC8800] 12 LOAD-BALANCING could not be performed with the bandwidth constraints [RFC8779] 13 No label resource in range [RFC8779] 14 No endpoint label resource in range [RFC8779] 15 No endpoint label resource [RFC8779] 16 Granularity not supported [RFC8779] 17 No Resource [RFC8779] 18 Protection Mismatch [RFC8779] 19 Destination is not found in the indicated domain [RFC8685] 20 No available resource in one or more domains [RFC8685] 21 Unresponsive child PCE(s) [RFC8685] 22 Destination domain unknown [RFC8685] 23 No RWA constraints met [RFC8780] 24 P2MP Reachability Problem [RFC8306] 25 No GCO solution found [RFC5557] 26 No GCO migration path found [RFC5557] 27 PKS expansion failure [RFC5520] 28 BRPC Path computation chain unavailable [RFC5441] 29 Unknown Source [RFC5440] 30 Unknown Destination [RFC5440] 31 PCE currently Unavailable [RFC5440] MONITORING Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5886] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-18 Unassigned 19 Incomplete [RFC5886] 20 Overload [RFC5886] 21 Processing Time [RFC5886] 22 General [RFC5886] 23 Liveness [RFC5886] PROC-TIME Object Flag Field Registration Procedure(s) IETF Review Reference [RFC5886] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-14 Unassigned 15 Estimated [RFC5886] OVERLOAD Object Flag field Registration Procedure(s) IETF Review Reference [RFC5886] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0-7 Unassigned BU Object Type Field Registration Procedure(s) Standards Action Reference [RFC8233] Available Formats [IMG] CSV Type Name Reference 0 Reserved [RFC8233] 1 LBU (Link Bandwidth Utilization) [RFC8233] 2 LRBU (Link Residual Bandwidth Utilization) [RFC8233] 3-255 Unassigned Inter-Layer Object Path Property Bits Registration Procedure(s) IETF Review Reference [RFC8282] Available Formats [IMG] CSV Bit Flag Multi-Layer Path Property Reference 0-28 Unassigned 29 T Triggered Signaling Allowed [RFC8282] 30 M Multi-Layer Requested [RFC8282] 31 I Inter-Layer Allowed [RFC8282] LSP Object Flag Field Registration Procedure(s) Standards Action Reference [RFC8231] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Bit Description Reference 0 PCE-allocation [RFC9604] 1 ERO-compression [RFC8623] 2 Fragmentation [RFC8623] 3 P2MP [RFC8623] 4 Create [RFC8281] 5-7 Operational (3 bits) [RFC8231] 8 Administrative [RFC8231] 9 Remove [RFC8231] 10 SYNC [RFC8231] 11 Delegate [RFC8231] STATEFUL-PCE-CAPABILITY TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8231] Note Bits are numbered from bit 0 as the most significant bit. Available Formats [IMG] CSV Value Description Reference 0-17 Unassigned 18 STRICT-PATH-CAPABILITY (TEMPORARY - registered 2024-02-23, expires 2025-02-23) [draft-ietf-pce-circuit-style-pcep-extensions-03] 19 PATH-RECOMPUTATION-CAPABILITY (TEMPORARY - registered 2024-02-23, expires 2025-02-23) [draft-ietf-pce-circuit-style-pcep-extensions-03] 20 COLOR-CAPABILITY (TEMPORARY - registered 2023-10-30, expires 2024-10-30) [draft-ietf-pce-pcep-color-02] 21 PD-LSP-CAPABILITY (PD-bit) [RFC8934] 22 LSP-SCHEDULING-CAPABILITY (B-bit) [RFC8934] 23 P2MP-LSP-INSTANTIATION-CAPABILITY [RFC8623] 24 P2MP-LSP-UPDATE-CAPABILITY [RFC8623] 25 P2MP-CAPABILITY [RFC8623] 26 TRIGGERED-INITIAL-SYNC [RFC8232] 27 DELTA-LSP-SYNC-CAPABILITY [RFC8232] 28 TRIGGERED-RESYNC [RFC8232] 29 LSP-INSTANTIATION-CAPABILITY (I) [RFC8281] 30 INCLUDE-DB-VERSION [RFC8232] 31 LSP-UPDATE-CAPABILITY [RFC8231] LSP-ERROR-CODE TLV Error Code Field Registration Procedure(s) Standards Action Reference [RFC8231] Available Formats [IMG] CSV Value Meaning Reference 0 Reserved [RFC8231] 1 Unknown reason [RFC8231] 2 Limit reached for PCE-controlled LSPs [RFC8231] 3 Too many pending LSP update requests [RFC8231] 4 Unacceptable parameters [RFC8231] 5 Internal error [RFC8231] 6 LSP administratively brought down [RFC8231] 7 LSP preempted [RFC8231] 8 RSVP signaling error [RFC8231] 9 Unsupported Color (TEMPORARY - registered 2023-10-30, expires 2024-10-30) [draft-ietf-pce-pcep-color-02] 10 SID Verification fails [RFC9603] 11-65535 Unassigned SRP Object Flag Field Registration Procedure(s) Standards Action Reference [RFC8281][RFC8786] Available Formats [IMG] CSV Value Description Reference 0-29 Unassigned 30 LSP Control Request [RFC8741] 31 LSP-Remove [RFC8281] PCEP Path Setup Types Registration Procedure(s) IETF Review Reference [RFC8408] Available Formats [IMG] CSV Value Description Reference 0 Path is set up using the RSVP-TE signaling protocol [RFC8408] 1 Traffic-engineering path is set up using Segment Routing. [RFC8664] 2 Traffic engineering path is set up using PCECC mode [RFC9050] 3 Traffic engineering path is set up using SRv6. [RFC9603] 4 Native IP TE Path [RFC-ietf-pce-pcep-extension-native-ip-39] 5-255 Unassigned PCEP SR-ERO NAI Types Registration Procedure(s) IETF Review Reference [RFC8664] Available Formats [IMG] CSV Value Description Reference 0 NAI is absent. [RFC8664] 1 NAI is an IPv4 node ID. [RFC8664] 2 NAI is an IPv6 node ID. [RFC8664] 3 NAI is an IPv4 adjacency. [RFC8664] 4 NAI is an IPv6 adjacency with global IPv6 addresses. [RFC8664] 5 NAI is an unnumbered adjacency with IPv4 node IDs. [RFC8664] 6 NAI is an IPv6 adjacency with link-local IPv6 addresses. [RFC8664] 7-15 Unassigned SR-ERO Flag Field Registration Procedure(s) Standards Action Reference [RFC8664] Available Formats [IMG] CSV Bit Description Reference 0-6 Unassigned 7 SR-Algorithm Flag (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, expires 2025-09-13) [draft-ietf-pce-sid-algo-12] 8 NAI is absent (F) [RFC8664] 9 SID is absent (S) [RFC8664] 10 SID specifies TC, S, and TTL in addition to an MPLS label (C) [RFC8664] 11 SID specifies an MPLS label (M) [RFC8664] PATH-SETUP-TYPE-CAPABILITY Sub-TLV Type Indicators Registration Procedure(s) Standards Action Reference [RFC8664] Available Formats [IMG] CSV Value Meaning Reference 0 Reserved [RFC8664] 1 PCECC-CAPABILITY [RFC9050] 2-25 Unassigned 26 SR-PCE-CAPABILITY [RFC8664] 27 SRv6-PCE-CAPABILITY [RFC9603] 28-65535 Unassigned SR Capability Flag Field Registration Procedure(s) Standards Action Reference [RFC8664] Available Formats [IMG] CSV Bit Description Reference 0-4 Unassigned 5 SR-Algorithm Capability (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, expires [draft-ietf-pce-sid-algo-12] 2025-09-13) 6 Node or Adjacency Identifier (NAI) is supported (N) [RFC8664] 7 Unlimited Maximum SID Depth (X) [RFC8664] WA Object Flag Field Registration Procedure(s) Standards Action Reference [RFC8780] Available Formats [IMG] CSV Bit Description Reference 0-14 Unassigned 15 Wavelength Allocation Mode [RFC8780] Wavelength Restriction TLV Action Values Registration Procedure(s) Standards Action Reference [RFC8780] Available Formats [IMG] CSV Value Meaning Reference 0 Inclusive List [RFC8780] 1 Inclusive Range [RFC8780] 2-255 Unassigned Wavelength Allocation TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8780] Available Formats [IMG] CSV Bit Description Reference 0-14 Unassigned 15 Wavelength Allocation Mode [RFC8780] S2LS Object Flag Field Registration Procedure(s) Standards Action Reference [RFC8623] Available Formats [IMG] CSV Bit Description Reference 0-28 Unassigned 29-31 Operational (3 bits) [RFC8623] H-PCE-CAPABILITY TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8685] Available Formats [IMG] CSV Bit Description Reference 0-30 Unassigned 31 P (Parent PCE Request bit) [RFC8685] Domain-ID TLV Domain Type Registration Procedure(s) IETF Review Reference [RFC8685] Available Formats [IMG] CSV Value Meaning Reference 0 Reserved [RFC8685] 1 2-byte AS number [RFC8685] 2 4-byte AS number [RFC8685] 3 4-byte OSPF area ID [RFC8685] 4 Variable-length IS-IS area ID [RFC8685] 5-255 Unassigned H-PCE-FLAG TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8685] Available Formats [IMG] CSV Bit Description Reference 0-29 Unassigned 30 D (Disallow Domain Re-entry bit) [RFC8685] 31 S (Domain Sequence bit) [RFC8685] ASSOCIATION Flag Field Registration Procedure(s) Standards Action Reference [RFC8697] Available Formats [IMG] CSV Bit Description Reference 0-14 Unassigned 15 R (Removal) [RFC8697] ASSOCIATION Type Field Registration Procedure(s) Standards Action Reference [RFC8697] Available Formats [IMG] CSV Type Name Reference 0 Reserved [RFC8697] 1 Path Protection Association [RFC8745] 2 Disjoint Association [RFC8800] 3 Policy Association [RFC9005] 4 Single-Sided Bidirectional LSP Association [RFC9059] 5 Double-Sided Bidirectional LSP Association [RFC9059] 6 SR Policy Association (TEMPORARY - registered 2021-03-30, extension registered [draft-ietf-pce-segment-routing-policy-cp-14] 2024-02-15, expires 2025-03-30) 7 VN Association [RFC9358] 8 Double-Sided Bidirectional with Reverse LSP Association (TEMPORARY - registered [draft-ietf-pce-sr-bidir-path-12] 2023-11-30, expires 2024-11-30) 9 P2MP SR Policy Association (TEMPORARY - registered 2024-08-27, expires 2025-08-27) [draft-ietf-pce-sr-p2mp-policy-09] 10-65535 Unassigned AUTO-BANDWIDTH-CAPABILITY TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8733] Available Formats [IMG] CSV Bit Description Reference 0-31 Unassigned AUTO-BANDWIDTH-ATTRIBUTES Sub-TLV Types Reference [RFC8733] Available Formats [IMG] CSV Range Registration Procedures 0-65503 IETF Review 65504-65535 Experimental Use Type Name Reference 0 Reserved [RFC8733] 1 Sample-Interval [RFC8733] 2 Adjustment-Interval [RFC8733] 3 Down-Adjustment-Interval [RFC8733] 4 Adjustment-Threshold [RFC8733] 5 Adjustment-Threshold-Percentage [RFC8733] 6 Down-Adjustment-Threshold [RFC8733] 7 Down-Adjustment-Threshold-Percentage [RFC8733] 8 Minimum-Bandwidth [RFC8733] 9 Maximum-Bandwidth [RFC8733] 10 Overflow-Threshold [RFC8733] 11 Overflow-Threshold-Percentage [RFC8733] 12 Underflow-Threshold [RFC8733] 13 Underflow-Threshold-Percentage [RFC8733] 14-65503 Unassigned 65504-65535 Experimental Use [RFC8733] Path Protection Association Group TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8745] Available Formats [IMG] CSV Bit Name Reference 31 P - PROTECTION-LSP [RFC8745] 30 S - SECONDARY-LSP [RFC8745] 6-29 Unassigned 0-5 Protection Type Flags [RFC8745] Generalized Endpoint Types Reference [RFC8779] Available Formats [IMG] CSV Range Registration Procedures 0-244 Standards Action 245-255 Experimental Use Value Type Reference 0 Point-to-Point [RFC8779] 1 Point-to-Multipoint with leaf type 1 [RFC8779] 2 Point-to-Multipoint with leaf type 2 [RFC8779] 3 Point-to-Multipoint with leaf type 3 [RFC8779] 4 Point-to-Multipoint with leaf type 4 [RFC8779] 5 Point-to-Multipoint with leaf type 5 (TEMPORARY - registered 2024-08-27, expires 2025-08-27) [draft-ietf-pce-sr-p2mp-policy-09] 6-244 Unassigned 245-255 Experimental Use [RFC8779] GMPLS-CAPABILITY TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8779] Available Formats [IMG] CSV Bit Capability Description Reference 31 LSP-REPORT-CAPABILITY (R) [RFC9504] 30 LSP-UPDATE-CAPABILITY (U) [RFC9504] 29 LSP-INSTANTIATION-CAPABILITY (I) [RFC9504] 0-28 Unassigned DISJOINTNESS-CONFIGURATION TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC8800] Available Formats [IMG] CSV Bit Name Reference 31 L - Link Diverse [RFC8800] 30 N - Node Diverse [RFC8800] 29 S - SRLG Diverse [RFC8800] 28 P - Shortest Path [RFC8800] 27 T - Strict Disjointness [RFC8800] 0-26 Unassigned SCHED-PD-LSP-ATTRIBUTE TLV Opt Field Registration Procedure(s) Standards Action Reference [RFC8934] Available Formats [IMG] CSV Value Description Reference 0 Reserved [RFC8934] 1 REPEAT-EVERY-MONTH [RFC8934] 2 REPEAT-EVERY-YEAR [RFC8934] 3 REPEAT-EVERY-REPEAT-TIME-LENGTH [RFC8934] 4-14 Unassigned 15 Reserved [RFC8934] Schedule TLVs Flag Field Registration Procedure(s) Standards Action Reference [RFC8934] Available Formats [IMG] CSV Bit Description Reference 0-3 Unassigned 4 Relative Time (R-bit) [RFC8934] 5 PCC Responsible (C-bit) [RFC8934] 6 LSP Activated (A-bit) [RFC8934] 7 Grace Period Included (G-bit) [RFC8934] FLOWSPEC Object Flag Field Registration Procedure(s) Standards Action Reference [RFC9168] Available Formats [IMG] CSV Bit Description Reference 0-5 Unassigned 6 LPM (L bit) [RFC9168] 7 Remove (R bit) [RFC9168] PCEP Flow Specification TLV Type Indicators Reference [RFC9168] Available Formats [IMG] CSV Range Registration Procedures Note 0-255 Reserved Must not be allocated. Usage mirrors the BGP Flowspec registry. 256-64506 Specification Required 64507-65531 First Come First Served 65532-65535 Experimental Use Value Meaning Reference 0-255 Reserved. Must not be allocated. Usage mirrors the BGP FlowSpec registry [draft-ietf-idr-rfc5575bis-27] and [RFC9168] [draft-ietf-idr-flow-spec-v6-19] 256 Route Distinguisher [RFC9168] 257 IPv4 Multicast [RFC9168] 258 IPv6 Multicast [RFC9168] 259-65531 Unassigned 65532-65535 Experimental Use [RFC9168] Bidirectional LSP Association Group TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC9059] Available Formats [IMG] CSV Bit Description Reference 0-29 Unassigned 30 C - Co-routed Path [RFC9059] 31 R - Reverse LSP [RFC9059] PCECC-CAPABILITY sub-TLV Registration Procedure(s) Standards Action Reference [RFC9050] Available Formats [IMG] CSV Bit Name Reference 0-29 Unassigned 30 NATIVE IP (TEMPORARY - registered 2023-08-14, extension registered 2024-07-31, expires [RFC-ietf-pce-pcep-extension-native-ip-39] 2025-08-14) 31 Label [RFC9050] CCI Object Flag Field for MPLS Label Registration Procedure(s) Standards Action Reference [RFC9050] Available Formats [IMG] CSV Bit Description Reference 0-13 Unassigned 14 C Bit - PCC allocation [RFC9050] 15 O Bit - Specifies label is out-label [RFC9050] TE-PATH-BINDING TLV BT Field Registration Procedure(s) Standards Action Reference [RFC9604] Available Formats [IMG] CSV Value Description Reference 0 MPLS Label [RFC9604] 1 MPLS Label Stack Entry [RFC9604] 2 SRv6 SID [RFC9604] 3 SRv6 SID with Behavior and Structure [RFC9604] 4-255 Unassigned TE-PATH-BINDING TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC9604] Available Formats [IMG] CSV Bit Description Reference 0 R (Removal) [RFC9604] 1 S (Specified-BSID-only) (TEMPORARY - registered 2024-02-13, expires 2025-02-13) [draft-ietf-pce-segment-routing-policy-cp-14] 2-7 Unassigned LSP-EXTENDED-FLAG TLV Flag Field Registration Procedure(s) Standards Action Reference [RFC9357] Available Formats [IMG] CSV 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, expires 2025-02-23) [draft-ietf-pce-circuit-style-pcep-extensions-03] 5-31 Unassigned LSP Exclusion Subobject Flag Field Registration Procedure(s) Standards Action Reference [RFC9504] Available Formats [IMG] CSV Bit Description Reference 0-7 Unassigned PCEP SRv6-ERO NAI Types Registration Procedure(s) IETF Review Reference [RFC9603] Available Formats [IMG] CSV Value Description Reference 0 NAI is absent. [RFC9603] 1 Unassigned 2 NAI is an IPv6 node ID. [RFC9603] 3 Unassigned 4 NAI is an IPv6 adjacency with global IPv6 addresses. [RFC9603] 5 Unassigned 6 NAI is an IPv6 adjacency with link-local IPv6 addresses. [RFC9603] 7-15 Unassigned SRv6-ERO Flag Field Registration Procedure(s) Standards Action Reference [RFC9603] Available Formats [IMG] CSV Bit Description Reference 0-7 Unassigned 8 SID Verification (V) [RFC9603] 9 SID Structure is present (T) [RFC9603] 10 NAI is absent (F) [RFC9603] 11 SID is absent (S) [RFC9603] SRv6 Capability Flag Field Registration Procedure(s) Standards Action Reference [RFC9603] Available Formats [IMG] CSV Bit Description Reference 0-13 Unassigned 14 Node or Adjacency Identifier (NAI) is supported (N) [RFC9603] 15 Unassigned CCI Object Flag Field for Native-IP Registration Procedure(s) IETF Review Reference [RFC-ietf-pce-pcep-extension-native-ip-39] Available Formats [IMG] CSV Bit Description Reference 0-15 Unassigned BPI Object Status Code Field Registration Procedure(s) IETF Review Reference [RFC-ietf-pce-pcep-extension-native-ip-39] Available Formats [IMG] CSV Value Meaning Reference 0 Reserved [RFC-ietf-pce-pcep-extension-native-ip-39] 1 BGP Session Established [RFC-ietf-pce-pcep-extension-native-ip-39] 2 BGP Session Establishment In Progress [RFC-ietf-pce-pcep-extension-native-ip-39] 3 BGP Session Down [RFC-ietf-pce-pcep-extension-native-ip-39] 4-255 Unassigned BPI Object Error Code Field Registration Procedure(s) IETF Review Reference [RFC-ietf-pce-pcep-extension-native-ip-39] Available Formats [IMG] CSV Value Meaning Reference 0 Reserved [RFC-ietf-pce-pcep-extension-native-ip-39] 1 ASes does not match, BGP Session Failure [RFC-ietf-pce-pcep-extension-native-ip-39] 2 Peer IP can't be reached, BGP Session Failure [RFC-ietf-pce-pcep-extension-native-ip-39] 3-255 Unassigned BPI Object Flag Field Registration Procedure(s) IETF Review Reference [RFC-ietf-pce-pcep-extension-native-ip-39] Available Formats [IMG] CSV Bit Meaning Reference 0-6 Unassigned 7 T (IPnIP) bit [RFC-ietf-pce-pcep-extension-native-ip-39] Licensing Terms