Path Computation Element Protocol (PCEP) Numbers

Created: 2008-12-19
Last Updated: 2024-12-10
Available Formats: XML
HTML
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: 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: 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 requested	[RFC5440]
		3: Generalized bandwidth	[RFC8779, Section 2.3]
		4: Generalized bandwidth of an existing TE-LSP for which a reoptimization is requested	[RFC8779, Section 2.3]
		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 2025-08-27)	[draft-ietf-pce-sr-p2mp-policy-09]
		4-15: Unassigned
45	PATH-ATTRIB (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	0: Reserved	[draft-ietf-pce-multipath-07]
		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

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

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

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

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

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

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 2025-09-13)	[draft-ietf-pce-sid-algo-12]
23	P2MP Path Min Delay Metric (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, expires 2025-09-13)	[draft-ietf-pce-sid-algo-12]
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

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

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

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

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

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

CSV

Bit	Description	Reference
0-7	Unassigned

PCEP-ERROR Object Error Types and Values

Reference: [RFC5440][RFC-ietf-pce-iana-update-03]
Available Formats: CSV

Range	Registration Procedures	Note
0-251	IETF Review	The IETF Review procedure applies to all Error-values (0-255) for Error-Types in this range.
252-255	Experimental Use	The Experimental Use policy applies to all Error-values (0-255) for Error-Types in this range.

Error-Type	Meaning	Error-value	Reference
0	Reserved	0-255: Reserved	[RFC5440]
1	PCEP session establishment failure	0: Unassigned	[RFC5440]
		1: reception of an invalid Open message or a non Open message.	[RFC5440]
		2: no Open message received before the expiration of the OpenWait timer	[RFC5440]
		3: unacceptable and non negotiable session characteristics	[RFC5440]
		4: unacceptable but negotiable session characteristics	[RFC5440]
		5: reception of a second Open message with still unacceptable session characteristics	[RFC5440]
		6: reception of a PCErr message proposing unacceptable session characteristics	[RFC5440]
		7: No Keepalive or PCErr message received before the expiration of the KeepWait timer	[RFC5440]
		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 Endpoint object type	[RFC8779]
		8: Unsupported TLV present in END-POINTS Generalized Endpoint object type	[RFC8779]
		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 policy violation	[RFC5886]
		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 the RP object set)	[RFC5440]
		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 - registered 2024-02-13, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
		22-255: Unassigned
7	Synchronized path computation request missing	0-255: Unassigned	[RFC5440]
8	Unknown request reference	0-255: Unassigned	[RFC5440]
9	Attempt to establish a second PCEP session	0-255: Unassigned	[RFC5440]
10	Reception of an invalid object	0: Unassigned	[RFC5440]
		1: Reception of an object with P flag not set although the P-flag must be set according to this specification.	[RFC5440]
		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 types	[RFC8664]
		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 types	[RFC8664]
		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 PROTECTION-ATTRIBUTE TLV	[RFC8779]
		26: Unsupported Secondary LSP Protection Flags in PROTECTION-ATTRIBUTE TLV	[RFC8779]
		27: Unsupported Link Protection Type in PROTECTION-ATTRIBUTE TLV	[RFC8779]
		28: LABEL-SET TLV present with O bit set but without R bit set in RP	[RFC8779]
		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 format	[RFC8779]
		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 types	[RFC9603]
		37: Invalid SRv6 SID Structure	[RFC9603]
		38: Conflicting Path ID (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	[draft-ietf-pce-multipath-07]
		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 subobject	[RFC9603]
		42: Both SID and NAI are absent in the SRv6-ERO subobject	[RFC9603]
		43: ERO mixes SRv6-ERO subobjects with other subobject types	[RFC9603]
		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 configured TE-class	[RFC5455]
		4-255: Unassigned
13	BRPC procedure completion failure	0: Unassigned	[RFC5441]
		1: BRPC procedure not supported by one or more PCEs along the domain path	[RFC5441]
		2-255: Unassigned
14	Unassigned	0-255: Unassigned
15	Global Concurrent Optimization Error	0: Unassigned	[RFC5557]
		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 insufficient memory	[RFC8306]
		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 END-POINTS with leaf type 2	[RFC8306]
		2: The PCE cannot satisfy the request due to no END-POINTS with leaf type 3	[RFC8306]
		3: The PCE cannot satisfy the request due to no END-POINTS with leaf type 4	[RFC8306]
		4: The PCE cannot satisfy the request due to inconsistent END-POINTS	[RFC8306]
		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 identifies the LSP.	[RFC8231]
		2: Attempted LSP Update Request if the stateful PCE capability was not advertised.	[RFC8231]
		3: Attempted LSP Update Request for an LSP identified by an unknown PLSP-ID.	[RFC8231]
		4: Unassigned
		5: Attempted LSP State Report if active stateful PCE capability was not advertised.	[RFC8231]
		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 capability for P2MP was not advertised	[RFC8623]
		12: Attempted LSP Update Request for P2MP if active stateful PCE capability for P2MP was not advertised	[RFC8623]
		13: Attempted LSP Instantiation Request for P2MP if stateful PCE instantiation capability for P2MP was not advertised	[RFC8623]
		14: Auto-Bandwidth capability was not advertised	[RFC8733]
		15: Attempted LSP scheduling while the scheduling capability was not advertised	[RFC8934]
		16: Attempted PCECC operations when PCECC capability was not advertised	[RFC9050]
		17: Stateful PCE capability was not advertised	[RFC9050]
		18: Unknown Label	[RFC9050]
		19: Attempted SRv6 when the capability was not advertised	[RFC9603]
		20: Not supported path backup (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	[draft-ietf-pce-multipath-07]
		21: Non-empty path (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	[draft-ietf-pce-multipath-07]
		22: Only one BPI, EPR or PPA object can be included in this message	[RFC-ietf-pce-pcep-extension-native-ip-39]
		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 PCE capability not advertised	[RFC9504]
		26: Attempted LSP State Report for GMPLS if stateful PCE capability not advertised	[RFC9504]
		27: Attempted LSP instantiation request for GMPLS if stateful PCE instantiation capability not advertised	[RFC9504]
		28: Use of the Generalized Endpoint object type for non-GMPLS LSPs	[RFC9504]
		29: Attempted Native-IP operations when the capability was not advertised	[RFC-ietf-pce-pcep-extension-native-ip-39]
		30: Unknown Native-IP Info	[RFC-ietf-pce-pcep-extension-native-ip-39]
		31-255: Unassigned
20	LSP State Synchronization Error	0: Unassigned	[RFC8231]
		1: A PCE indicates to a PCC that it cannot process (an otherwise valid) LSP State Report. The PCEP- ERROR object is followed by the LSP object that identifies the LSP.	[RFC8231]
		2: LSP-DB version mismatch.	[RFC8232]
		3: Attempt to trigger synchronization before PCE trigger.	[RFC8232]
		4: Attempt to trigger a synchronization when the PCE triggered synchronization capability has not been advertised.	[RFC8232]
		5: A PCC indicates to a PCE that it cannot complete the State Synchronization.	[RFC8231]
		6: Received an invalid LSP-DB Version Number.	[RFC8232]
		7: Received an invalid Speaker Entity Identifier.	[RFC8232]
		8-255: Unassigned
21	Invalid traffic engineering path setup type	0: Unassigned	[RFC8408]
		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 initiated	[RFC8281]
		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, Open, or PCErr	[RFC8253]
		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 StartTLSWait timer expiry	[RFC8253]
		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 Association	[RFC8745]
		10: Attempt to add another working/protection LSP for Path Protection Association	[RFC8745]
		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 - registered 2024-02-13, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
		21: SR Policy Candidate Path Identifier Mismatch (TEMPORARY - registered 2024-02-13, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
		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
34-251	Unassigned	0-255: Unassigned
252-255	Reserved for Experimental Use	0-255: Reserved for Experimental Use	[RFC-ietf-pce-iana-update-03]

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

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

CSV

Bit	Description	Reference
0-7	Unassigned

CLOSE Object Reason Field

Registration Procedure(s)

IETF Review

Reference

[RFC5440]

Available Formats

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

CSV

Bit	Description	Reference
0-7	Unassigned

PATH-KEY Subobjects

Registration Procedure(s)

IETF Review

Reference

[RFC5520]

Available Formats

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

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

CSV

Bit	Description	Reference
0-14	Unassigned
15	Fail (F-bit)	[RFC5521]

Objective Function

Reference: [RFC5541]
Available Formats: 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: 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 2024-02-15, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
57	SRPOLICY-CPATH-ID (TEMPORARY - registered 2021-03-30, extension registered 2024-02-15, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
58	SRPOLICY-CPATH-NAME (TEMPORARY - registered 2021-03-30, extension registered 2024-02-15, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
59	SRPOLICY-CPATH-PREFERENCE (TEMPORARY - registered 2021-03-30, extension registered 2024-02-15, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
60	MULTIPATH-CAP (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	[draft-ietf-pce-multipath-07]
61	MULTIPATH-WEIGHT (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	[draft-ietf-pce-multipath-07]
62	MULTIPATH-BACKUP (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	[draft-ietf-pce-multipath-07]
63	MULTIPATH-OPPDIR-PATH (TEMPORARY - registered 2022-05-09, extension registered 2024-04-25, expires 2025-05-09)	[draft-ietf-pce-multipath-07]
64	LSP-EXTENDED-FLAG	[RFC9357]
65	VIRTUAL-NETWORK-TLV	[RFC9358]
66	SR-Algorithm (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, expires 2025-09-13)	[draft-ietf-pce-sid-algo-12]
67	Color (TEMPORARY - registered 2023-10-30, extension registered 2024-11-13, publication requested 2024-11-25)	[draft-ietf-pce-pcep-color-02]
68	COMPUTATION-PRIORITY (TEMPORARY - registered 2024-02-13, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
69	EXPLICIT-NULL-LABEL-POLICY (TEMPORARY - registered 2024-02-13, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
70	INVALIDATION (TEMPORARY - registered 2024-02-13, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
71	SRPOLICY-CAPABILITY (TEMPORARY - registered 2024-02-13, publication requested 2024-07-05)	[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 2025-08-27)	[draft-ietf-pce-sr-p2mp-policy-09]
75	IPV6-SR-P2MP-INSTANCE-ID TLV (TEMPORARY - registered 2024-08-27, expires 2025-08-27)	[draft-ietf-pce-sr-p2mp-policy-09]
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

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

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

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

CSV

Bit	Description	Reference
0-7	Unassigned

BU Object Type Field

Registration Procedure(s)

IETF Review

Reference

[RFC8233][RFC-ietf-pce-iana-update-03]

Available Formats

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

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)

IETF Review

Reference

[RFC8231][RFC-ietf-pce-iana-update-03]

Note

Bits are numbered from bit 0 as the most significant bit.

Available Formats

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)

IETF Review

Reference

[RFC8231][RFC-ietf-pce-iana-update-03]

Note

Bits are numbered from bit 0 as the most significant bit.

Available Formats

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, extension registered 2024-11-13, publication requested 2024-11-25)	[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)

IETF Review

Reference

[RFC8231][RFC-ietf-pce-iana-update-03]

Available Formats

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, extension registered 2024-11-13, publication requested 2024-11-25)	[draft-ietf-pce-pcep-color-02]
10	SID Verification fails	[RFC9603]
11-65535	Unassigned

SRP Object Flag Field

Registration Procedure(s)

IETF Review

Reference

[RFC8281][RFC8786][RFC-ietf-pce-iana-update-03]

Available Formats

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

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

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)

IETF Review

Reference

[RFC8664][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC8664][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC8664][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0-4	Unassigned
5	SR-Algorithm Capability (TEMPORARY - registered 2023-09-13, extension registered 2024-07-23, expires 2025-09-13)	[draft-ietf-pce-sid-algo-12]
6	Node or Adjacency Identifier (NAI) is supported (N)	[RFC8664]
7	Unlimited Maximum SID Depth (X)	[RFC8664]

WA Object Flag Field

Registration Procedure(s)

IETF Review

Reference

[RFC8780][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0-14	Unassigned
15	Wavelength Allocation Mode	[RFC8780]

Wavelength Restriction TLV Action Values

Registration Procedure(s)

IETF Review

Reference

[RFC8780][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Value	Meaning	Reference
0	Inclusive List	[RFC8780]
1	Inclusive Range	[RFC8780]
2-255	Unassigned

Wavelength Allocation TLV Flag Field

Registration Procedure(s)

IETF Review

Reference

[RFC8780][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0-14	Unassigned
15	Wavelength Allocation Mode	[RFC8780]

S2LS Object Flag Field

Registration Procedure(s)

IETF Review

Reference

[RFC8623][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0-28	Unassigned
29-31	Operational (3 bits)	[RFC8623]

H-PCE-CAPABILITY TLV Flag Field

Registration Procedure(s)

IETF Review

Reference

[RFC8685][RFC-ietf-pce-iana-update-03]

Available Formats

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

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)

IETF Review

Reference

[RFC8685][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC8697][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0-14	Unassigned
15	R (Removal)	[RFC8697]

ASSOCIATION Type Field

Registration Procedure(s)

IETF Review

Reference

[RFC8697][RFC-ietf-pce-iana-update-03]

Available Formats

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 2024-02-15, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
7	VN Association	[RFC9358]
8	Double-Sided Bidirectional with Reverse LSP Association (TEMPORARY - registered 2023-11-30, extension registered 2024-11-13, expires 2025-11-30)	[draft-ietf-pce-sr-bidir-path-12]
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)

IETF Review

Reference

[RFC8733][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0-31	Unassigned

AUTO-BANDWIDTH-ATTRIBUTES Sub-TLV Types

Reference: [RFC8733]
Available Formats: 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)

IETF Review

Reference

[RFC8745][RFC-ietf-pce-iana-update-03]

Available Formats

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][RFC-ietf-pce-iana-update-03]
Available Formats: CSV

Range	Registration Procedures
0-244	IETF Review
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)

IETF Review

Reference

[RFC8779][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC8800][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC8934][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC8934][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC9168][RFC-ietf-pce-iana-update-03]

Available Formats

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: 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 [draft-ietf-idr-flow-spec-v6-19]	[RFC9168]
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)

IETF Review

Reference

[RFC9059][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC9050][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Name	Reference
0-29	Unassigned
30	NATIVE IP (TEMPORARY - registered 2023-08-14, extension registered 2024-07-31, expires 2025-08-14)	[RFC-ietf-pce-pcep-extension-native-ip-39]
31	Label	[RFC9050]

CCI Object Flag Field for MPLS Label

Registration Procedure(s)

IETF Review

Reference

[RFC9050][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC9604][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC9604][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0	R (Removal)	[RFC9604]
1	S (Specified-BSID-only) (TEMPORARY - registered 2024-02-13, publication requested 2024-07-05)	[draft-ietf-pce-segment-routing-policy-cp-14]
2-7	Unassigned

LSP-EXTENDED-FLAG TLV Flag Field

Registration Procedure(s)

IETF Review

Reference

[RFC9357][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC9504][RFC-ietf-pce-iana-update-03]

Available Formats

CSV

Bit	Description	Reference
0-7	Unassigned

PCEP SRv6-ERO NAI Types

Registration Procedure(s)

IETF Review

Reference

[RFC9603]

Available Formats

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)

IETF Review

Reference

[RFC9603][RFC-ietf-pce-iana-update-03]

Available Formats

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)

IETF Review

Reference

[RFC9603][RFC-ietf-pce-iana-update-03]

Available Formats

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

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

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

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

CSV

Bit	Meaning	Reference
0-6	Unassigned
7	T (IPnIP) bit	[RFC-ietf-pce-pcep-extension-native-ip-39]