Internet Assigned Numbers Authority
Path Computation Element Protocol (PCEP) Numbers
Created
2008-12-19
Last Updated
2025-07-10
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
??SR Policy Invalidation Operational Flags
??SR Policy Invalidation Configuration Flags
??SR Policy Capability TLV 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 [RFC5440]
a reoptimization is requested
3: Generalized bandwidth [RFC8779, Section 2.3]
4: Generalized bandwidth of an existing
TE-LSP for which a reoptimization is [RFC8779, Section 2.3]
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 [RFC9757]
3: SR P2MP Policy (TEMPORARY - registered
2024-08-27, extension registered 2025-07-10, [draft-ietf-pce-sr-p2mp-policy-11]
expires 2026-08-27)
4-15: Unassigned
PATH-ATTRIB (TEMPORARY - registered
45 2022-05-09, extension registered 2025-04-04, 0: Reserved [draft-ietf-pce-multipath-07]
expires 2026-05-09)
1: PATH-ATTRIB [draft-ietf-pce-multipath-07]
2-15: Unassigned
46 BGP Peer Info Object-Type 0: Reserved [RFC9757]
1: IPv4 address [RFC9757]
2: IPv6 address [RFC9757]
3-15: Unassigned
47 Explicit Peer Route Object-Type 0: Reserved [RFC9757]
1: IPv4 address [RFC9757]
2: IPv6 address [RFC9757]
3-15: Unassigned
48 Peer Prefix Advertisement Object-Type 0: Reserved [RFC9757]
1: IPv4 address [RFC9757]
2: IPv6 address [RFC9757]
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, publication requested 2025-05-22) [draft-ietf-pce-sid-algo-12]
23 P2MP Path Min Delay Metric (TEMPORARY - registered 2023-09-13, publication requested 2025-05-22) [draft-ietf-pce-sid-algo-12]
24 Path Bandwidth Metric (TEMPORARY - registered 2024-07-30, publication requested 2025-05-22) [draft-ietf-pce-sid-algo-12]
25 P2MP Path Bandwidth Metric (TEMPORARY - registered 2024-07-30, publication requested 2025-05-22) [draft-ietf-pce-sid-algo-12]
26-127 Unassigned
128-255 User Defined Metric (TEMPORARY - registered 2024-07-30, publication requested 2025-05-22) [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
Reference
[RFC5440][RFC9756]
Available Formats
[IMG]
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 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 characteristics [RFC5440]
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 policy [RFC5886]
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 the [RFC5440]
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 [RFC9757]
20: LABEL-REQUEST TLV missing [RFC9504]
21: Missing SR Policy Mandatory TLV [RFC-ietf-pce-segment-routing-policy-cp-27]
22: Missing SR Policy Association [RFC-ietf-pce-segment-routing-policy-cp-27]
23-255: 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 the [RFC5440]
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 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 [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 bit [RFC8779]
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 2025-04-04, expires [draft-ietf-pce-multipath-07]
2026-05-09)
39: PCECC NATIVE-IP-TE-CAPABILITY bit is not set [RFC9757]
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 subobject [RFC9603]
43: ERO mixes SRv6-ERO subobjects with other subobject [RFC9603]
types
44: Missing SRPOLICY-CAPABILITY [RFC-ietf-pce-segment-routing-policy-cp-27]
45-255: 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 [RFC5455]
TE-class
4-255: Unassigned
13 BRPC procedure completion 0: Unassigned [RFC5441]
failure
1: BRPC procedure not supported by one or more PCEs along [RFC5441]
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 insufficient [RFC8306]
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 END-POINTS [RFC8306]
with leaf type 2
2: The PCE cannot satisfy the request due to no END-POINTS [RFC8306]
with leaf type 3
3: The PCE cannot satisfy the request due to no END-POINTS [RFC8306]
with leaf type 4
4: The PCE cannot satisfy the request due to inconsistent [RFC8306]
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 advertised [RFC9603]
20: Not supported path backup (TEMPORARY - registered
2022-05-09, extension registered 2025-04-04, expires [draft-ietf-pce-multipath-07]
2026-05-09)
21: Non-empty path (TEMPORARY - registered 2022-05-09, [draft-ietf-pce-multipath-07]
extension registered 2025-04-04, expires 2026-05-09)
22: Only one BPI, EPR, or PPA object can be included in [RFC9757]
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 PCE [RFC9504]
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 was [RFC9757]
not advertised
30: Unknown Native IP Info [RFC9757]
31: Invalid Color [RFC-ietf-pce-pcep-color-12]
32: Inconsistent Color [RFC-ietf-pce-pcep-color-12]
33-255: 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 object [RFC8231]
is followed by the LSP object that identifies the LSP.
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 [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 Path [RFC8745]
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 [RFC-ietf-pce-segment-routing-policy-cp-27]
21: SR Policy Candidate Path Identifier Mismatch [RFC-ietf-pce-segment-routing-policy-cp-27]
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 [RFC9757]
1: Local IP is in use [RFC9757]
2: Remote IP is in use [RFC9757]
3: Explicit Peer Route Error [RFC9757]
4: EPR/BPI Peer Info mismatch [RFC9757]
5: BPI/PPA Address Family mismatch [RFC9757]
6: PPA/BPI Peer Info mismatch [RFC9757]
7-255: Unassigned
34-251 Unassigned 0-255: Unassigned
252-255 Reserved for Experimental Use 0-255: Reserved for Experimental Use [RFC9756]
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 OVERLOADED-DURATION TLV [RFC5440][RFC Errata 8344]
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 [RFC-ietf-pce-segment-routing-policy-cp-27]
57 SRPOLICY-CPATH-ID [RFC-ietf-pce-segment-routing-policy-cp-27]
58 SRPOLICY-CPATH-NAME [RFC-ietf-pce-segment-routing-policy-cp-27]
59 SRPOLICY-CPATH-PREFERENCE [RFC-ietf-pce-segment-routing-policy-cp-27]
60 MULTIPATH-CAP (TEMPORARY - registered 2022-05-09, extension registered 2025-04-04, [draft-ietf-pce-multipath-07]
expires 2026-05-09)
61 MULTIPATH-WEIGHT (TEMPORARY - registered 2022-05-09, extension registered [draft-ietf-pce-multipath-07]
2025-04-04, expires 2026-05-09)
62 MULTIPATH-BACKUP (TEMPORARY - registered 2022-05-09, extension registered [draft-ietf-pce-multipath-07]
2025-04-04, expires 2026-05-09)
63 MULTIPATH-OPPDIR-PATH (TEMPORARY - registered 2022-05-09, extension registered [draft-ietf-pce-multipath-07]
2025-04-04, expires 2026-05-09)
64 LSP-EXTENDED-FLAG [RFC9357]
65 VIRTUAL-NETWORK-TLV [RFC9358]
66 SR-Algorithm (TEMPORARY - registered 2023-09-13, publication requested 2025-05-22) [draft-ietf-pce-sid-algo-12]
67 Color [RFC-ietf-pce-pcep-color-12]
68 COMPUTATION-PRIORITY [RFC-ietf-pce-segment-routing-policy-cp-27]
69 EXPLICIT-NULL-LABEL-POLICY [RFC-ietf-pce-segment-routing-policy-cp-27]
70 INVALIDATION [RFC-ietf-pce-segment-routing-policy-cp-27]
71 SRPOLICY-CAPABILITY [RFC-ietf-pce-segment-routing-policy-cp-27]
72 PATH-RECOMPUTATION TLV (TEMPORARY - registered 2024-02-23, extension registered [draft-ietf-pce-circuit-style-pcep-extensions-03]
2025-03-12, expires 2026-02-23)
73 SR-P2MP-POLICY-CAPABILITY (TEMPORARY - registered 2024-08-27, extension registered [draft-ietf-pce-sr-p2mp-policy-11]
2025-07-10, expires 2026-08-27)
74 IPV4-SR-P2MP-INSTANCE-ID TLV (TEMPORARY - registered 2024-08-27, extension [draft-ietf-pce-sr-p2mp-policy-11]
registered 2025-07-10, expires 2026-08-27)
75 IPV6-SR-P2MP-INSTANCE-ID TLV (TEMPORARY - registered 2024-08-27, extension [draft-ietf-pce-sr-p2mp-policy-11]
registered 2025-07-10, expires 2026-08-27)
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)
IETF Review
Reference
[RFC8233][RFC9756]
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)
IETF Review
Reference
[RFC8231][RFC9756]
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)
IETF Review
Reference
[RFC8231][RFC9756]
Note
Bits are numbered from bit 0 as the most significant bit.
Available Formats
[IMG]
CSV
Value Description Reference
0-16 Unassigned
17 RELAX [RFC9753]
18 STRICT-PATH-CAPABILITY (TEMPORARY - registered 2024-02-23, extension registered [draft-ietf-pce-circuit-style-pcep-extensions-03]
2025-03-12, expires 2026-02-23)
19 PATH-RECOMPUTATION-CAPABILITY (TEMPORARY - registered 2024-02-23, extension registered [draft-ietf-pce-circuit-style-pcep-extensions-03]
2025-03-12, expires 2026-02-23)
20 COLOR-CAPABILITY [RFC-ietf-pce-pcep-color-12]
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][RFC9756]
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 Deprecated (Unsupported Color) [RFC-ietf-pce-pcep-color-12]
10 SID Verification fails [RFC9603]
11-65535 Unassigned
SRP Object Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC8281][RFC8786][RFC9756]
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 [RFC9757]
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)
IETF Review
Reference
[RFC8664][RFC9756]
Available Formats
[IMG]
CSV
Bit Description Reference
0-6 Unassigned
7 SR-Algorithm Flag (TEMPORARY - registered 2023-09-13, publication requested 2025-05-22) [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][RFC9756]
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)
IETF Review
Reference
[RFC8664][RFC9756]
Available Formats
[IMG]
CSV
Bit Description Reference
0-4 Unassigned
5 SR-Algorithm Capability (TEMPORARY - registered 2023-09-13, publication requested 2025-05-22) [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][RFC9756]
Available Formats
[IMG]
CSV
Bit Description Reference
0-14 Unassigned
15 Wavelength Allocation Mode [RFC8780]
Wavelength Restriction TLV Action Values
Registration Procedure(s)
IETF Review
Reference
[RFC8780][RFC9756]
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)
IETF Review
Reference
[RFC8780][RFC9756]
Available Formats
[IMG]
CSV
Bit Description Reference
0-14 Unassigned
15 Wavelength Allocation Mode [RFC8780]
S2LS Object Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC8623][RFC9756]
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)
IETF Review
Reference
[RFC8685][RFC9756]
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)
IETF Review
Reference
[RFC8685][RFC9756]
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)
IETF Review
Reference
[RFC8697][RFC9756]
Available Formats
[IMG]
CSV
Bit Description Reference
0-14 Unassigned
15 R (Removal) [RFC8697]
ASSOCIATION Type Field
Registration Procedure(s)
IETF Review
Reference
[RFC8697][RFC9756]
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 [RFC-ietf-pce-segment-routing-policy-cp-27]
7 VN Association [RFC9358]
8 Double-Sided Bidirectional with Reverse LSP Association (TEMPORARY - registered 2023-11-30, [draft-ietf-pce-sr-bidir-path-12]
extension registered 2024-11-13, expires 2025-11-30)
9 P2MP SR Policy Association (TEMPORARY - registered 2024-08-27, extension registered [draft-ietf-pce-sr-p2mp-policy-11]
2025-07-10, expires 2026-08-27)
10-65535 Unassigned
AUTO-BANDWIDTH-CAPABILITY TLV Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC8733][RFC9756]
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)
IETF Review
Reference
[RFC8745][RFC9756]
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][RFC9756]
Available Formats
[IMG]
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, extension registered [draft-ietf-pce-sr-p2mp-policy-11]
2025-07-10, expires 2026-08-27)
6-244 Unassigned
245-255 Experimental Use [RFC8779]
GMPLS-CAPABILITY TLV Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC8779][RFC9756]
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)
IETF Review
Reference
[RFC8800][RFC9756]
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)
IETF Review
Reference
[RFC8934][RFC9756]
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)
IETF Review
Reference
[RFC8934][RFC9756]
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)
IETF Review
Reference
[RFC9168][RFC9756]
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)
IETF Review
Reference
[RFC9059][RFC9756]
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)
IETF Review
Reference
[RFC9050][RFC9756]
Available Formats
[IMG]
CSV
Bit Name Reference
0-29 Unassigned
30 Native IP [RFC9757]
31 Label [RFC9050]
CCI Object Flag Field for MPLS Label
Registration Procedure(s)
IETF Review
Reference
[RFC9050][RFC9756]
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)
IETF Review
Reference
[RFC9604][RFC9756]
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)
IETF Review
Reference
[RFC9604][RFC9756]
Available Formats
[IMG]
CSV
Bit Description Reference
0 R (Removal) [RFC9604]
1 Deprecated (Specified-BSID-only) [RFC-ietf-pce-segment-routing-policy-cp-27]
2-7 Unassigned
LSP-EXTENDED-FLAG TLV Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC9357][RFC9756]
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, extension registered 2025-03-12, [draft-ietf-pce-circuit-style-pcep-extensions-03]
expires 2026-02-23)
5-31 Unassigned
LSP Exclusion Subobject Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC9504][RFC9756]
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)
IETF Review
Reference
[RFC9603][RFC9756]
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)
IETF Review
Reference
[RFC9603][RFC9756]
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
[RFC9757]
Available Formats
[IMG]
CSV
Bit Description Reference
0-15 Unassigned
BPI Object Status Code Field
Registration Procedure(s)
IETF Review
Reference
[RFC9757]
Available Formats
[IMG]
CSV
Value Meaning Reference
0 Reserved [RFC9757]
1 BGP Session Established [RFC9757]
2 BGP Session Establishment In Progress [RFC9757]
3 BGP Session Down [RFC9757]
4-255 Unassigned
BPI Object Error Code Field
Registration Procedure(s)
IETF Review
Reference
[RFC9757]
Available Formats
[IMG]
CSV
Value Meaning Reference
0 Reserved [RFC9757]
1 ASes do not match - BGP Session Failure [RFC9757]
2 Peer IP can't be reached - BGP Session Failure [RFC9757]
3-255 Unassigned
BPI Object Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC9757]
Available Formats
[IMG]
CSV
Bit Meaning Reference
0-6 Unassigned
7 T (IP-in-IP) bit [RFC9757]
SR Policy Invalidation Operational Flags
Registration Procedure(s)
IETF Review
Reference
[RFC-ietf-pce-segment-routing-policy-cp-27]
Available Formats
[IMG]
CSV
Bit Description Reference
0-6 Unassigned
7 D: dropping - the LSP is currently attracting traffic and actively dropping it. [RFC-ietf-pce-segment-routing-policy-cp-27]
SR Policy Invalidation Configuration Flags
Registration Procedure(s)
IETF Review
Reference
[RFC-ietf-pce-segment-routing-policy-cp-27]
Available Formats
[IMG]
CSV
Bit Description Reference
0-6 Unassigned
7 D: drop enabled - the Drop-upon-invalid is enabled on the LSP. [RFC-ietf-pce-segment-routing-policy-cp-27]
SR Policy Capability TLV Flag Field
Registration Procedure(s)
IETF Review
Reference
[RFC-ietf-pce-segment-routing-policy-cp-27]
Available Formats
[IMG]
CSV
Bit Description Reference
0-26 Unassigned
27 Stateless Operation (L-Flag) [RFC-ietf-pce-segment-routing-policy-cp-27]
28 Unassigned
29 Invalidation (I-Flag) [RFC-ietf-pce-segment-routing-policy-cp-27]
30 Explicit NULL Label Policy (E-Flag) [RFC-ietf-pce-segment-routing-policy-cp-27]
31 Computation Priority (P-flag) [RFC-ietf-pce-segment-routing-policy-cp-27]
Licensing Terms
Presently we were in a very dark road, and at a point where it dropped suddenly between steep sides we halted in black shadow. A gleam of pale sand, a whisper of deep flowing waters, and a farther glimmer of more sands beyond them challenged our advance. We had come to a "grapevine ferry." The scow was on the other side, the water too shoal for the horses to swim, and the bottom, most likely, quicksand. Out of the blackness of the opposite shore came a soft, high-pitched, quavering, long-drawn, smothered moan of woe, the call of that snivelling little sinner the screech-owl. Ferry murmured to me to answer it and I sent the same faint horror-stricken tremolo back. Again it came to us, from not farther than one might toss his cap, and I followed Ferry down to the water's edge. The grapevine guy swayed at our side, we heard the scow slide from the sands, and in a few moments, moved by two videttes, it touched our shore. Soon we were across, the two videttes riding with us, and beyond a sharp rise, in an old opening made by the swoop of a hurricane, we entered the silent unlighted bivouac of Ferry's scouts. Ferry got down and sat on the earth talking with Quinn, while the sergeants quietly roused the sleepers to horse. Plotinus is driven by this perplexity to reconsider the whole theory of Matter.477 He takes Aristotle¡¯s doctrine as the groundwork of his investigation. According to this, all existence is divided into Matter and Form. What we know of things¡ªin other words, the sum of their differential characteristics¡ªis their Form. Take away this, and the unknowable residuum is their Matter. Again, Matter is the vague indeterminate something out of which particular Forms are developed. The two are related as Possibility to Actuality, as the more generic to the more specific substance through every grade of classification and composition. Thus there are two Matters, the one sensible and the other intelligible. The former constitutes the common substratum of bodies, the other the common element of ideas.478 The general distinction between Matter and Form was originally suggested to Aristotle by Plato¡¯s remarks on the same subject; but he differs325 from his master in two important particulars. Plato, in his Timaeus, seems to identify Matter with space.479 So far, it is a much more positive conception than the ?λη of the Metaphysics. On the other hand, he constantly opposes it to reality as something non-existent; and he at least implies that it is opposed to absolute good as a principle of absolute evil.480 Thus while the Aristotelian world is formed by the development of Power into Actuality, the Platonic world is composed by the union of Being and not-Being, of the Same and the Different, of the One and the Many, of the Limit and the Unlimited, of Good and Evil, in varying proportions with each other. The Lawton woman had heard of an officer's family at Grant, which was in need of a cook, and had gone there. [See larger version] On the 8th of July an extraordinary Privy Council was summoned. All the members, of whatever party, were desired to attend, and many were the speculations as to the object of their meeting. The general notion was that it involved the continuing or the ending of the war. It turned out to be for the announcement of the king's intended marriage. The lady selected was Charlotte, the second sister of the Duke of Mecklenburg-Strelitz. Apart from the narrowness of her education, the young princess had a considerable amount of amiability, good sense, and domestic taste. These she shared with her intended husband, and whilst they made the royal couple always retiring, at the same time they caused them to give, during their lives, a moral air to their court. On the 8th of September Charlotte arrived at St. James's, and that afternoon the marriage took place, the ceremony being performed by the Archbishop of Canterbury. On the 22nd the coronation took place with the greatest splendour. Mother and girls were inconsolable, for each had something that they were sure "Si would like," and would "do him good," but they knew Josiah Klegg, Sr., well enough to understand what was the condition when he had once made up his mind. CHAPTER V. THE YOUNG RECRUITS Si proceeded to deftly construct a litter out of the two guns, with some sticks that he cut with a knife, and bound with pawpaw strips. His voice had sunk very low, almost to sweetness. A soft flurry of pink went over her face, and her eyelids drooped. Then suddenly she braced herself, pulled herself taut, grew combative again, though her voice shook. HoME²Ô¾®Ïè̫ʲôÐÇ×ù
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