Stream Control Transmission Protocol (SCTP) Parameters

Created: 2000-10
Last Updated: 2025年10月07日
Available Formats: XML
HTML
Plain text

Registries Included Below

Chunk Types
Chunk Parameter Types
Chunk Flags
Error Cause Codes
SCTP Payload Protocol Identifiers
Hashed Message Authentication Code (HMAC) Identifiers
Adaptation Code Points
Error Detection Methods

Chunk Types

Registration Procedure(s)

IETF Review

Reference

[RFC9260]

Note

A Chunk Flags sub-registry will be created for each new Chunk Type. 
The registration procedure for those sub-registries is RFC Required [RFC8126]. 
For more information, see Section 15.2 of [RFC9260].

Available Formats

CSV

ID Value	Chunk Type	Reference
0	Payload Data (DATA)	[RFC9260]
1	Initiation (INIT)	[RFC9260]
2	Initiation Acknowledgement (INIT ACK)	[RFC9260]
3	Selective Acknowledgement (SACK)	[RFC9260]
4	Heartbeat Request (HEARTBEAT)	[RFC9260]
5	Heartbeat Acknowledgement (HEARTBEAT ACK)	[RFC9260]
6	Abort (ABORT)	[RFC9260]
7	Shutdown (SHUTDOWN)	[RFC9260]
8	Shutdown Acknowledgement (SHUTDOWN ACK)	[RFC9260]
9	Operation Error (ERROR)	[RFC9260]
10	State Cookie (COOKIE ECHO)	[RFC9260]
11	Cookie Acknowledgement (COOKIE ACK)	[RFC9260]
12	Reserved for Explicit Congestion Notification Echo (ECNE)	[RFC9260]
13	Reserved for Congestion Window Reduced (CWR)	[RFC9260]
14	Shutdown Complete (SHUTDOWN COMPLETE)	[RFC9260]
15	Authentication Chunk (AUTH)	[RFC4895]
16-62	Unassigned
63	Reserved for IETF-defined Chunk Extensions	[RFC9260]
64	Payload Data supporting Interleaving (I-DATA)	[RFC8260]
65-126	Unassigned
127	Reserved for IETF-defined Chunk Extensions	[RFC9260]
128	Address Configuration Acknowledgment (ASCONF-ACK)	[RFC5061]
129	Unassigned
130	Re-configuration Chunk (RE-CONFIG)	[RFC6525]
131	Unassigned
132	Padding Chunk (PAD)	[RFC4820]
133-190	Unassigned
191	Reserved for IETF-defined Chunk Extensions	[RFC9260]
192	Forward TSN	[RFC3758]
193	Address Configuration Change Chunk (ASCONF)	[RFC5061]
194	I-FORWARD-TSN	[RFC8260]
195-254	Unassigned
255	Reserved for IETF-defined Chunk Extensions	[RFC9260]

Chunk Parameter Types

Registration Procedure(s)

IETF Review

Reference

[RFC9260]

Available Formats

CSV

ID Value	Chunk Parameter Type	Reference
1	Heartbeat Info	[RFC9260]
2-4	Unassigned
5	IPv4 Address	[RFC9260]
6	IPv6 Address	[RFC9260]
7	State Cookie	[RFC9260]
8	Unrecognized Parameter	[RFC9260]
9	Cookie Preservative	[RFC9260]
10	Unassigned
11	Host Name Address	[RFC9260]
12	Supported Address Types	[RFC9260]
13	Outgoing SSN Reset Request Parameter	[RFC6525]
14	Incoming SSN Reset Request Parameter	[RFC6525]
15	SSN/TSN Reset Request Parameter	[RFC6525]
16	Re-configuration Response Parameter	[RFC6525]
17	Add Outgoing Streams Request Parameter	[RFC6525]
18	Add Incoming Streams Request Parameter	[RFC6525]
19-32767	Unassigned
32768	Reserved for ECN Capable (0x8000)	[RFC9260]
32769	Zero Checksum Acceptable (0x8001)	[RFC9653]
32770	Random (0x8002)	[RFC4895]
32771	Chunk List (0x8003)	[RFC4895]
32772	Requested HMAC Algorithm Parameter (0x8004)	[RFC4895]
32773	Padding (0x8005)
32776	Supported Extensions (0x8008)	[RFC5061]
32777-49151	Unassigned
49152	Forward TSN supported (0xC000)	[RFC3758]
49153	Add IP Address (0xC001)	[RFC5061]
49154	Delete IP Address (0xC002)	[RFC5061]
49155	Error Cause Indication (0xC003)	[RFC5061]
49156	Set Primary Address (0xC004)	[RFC5061]
49157	Success Indication (0xC005)	[RFC5061]
49158	Adaptation Layer Indication (0xC006)	[RFC5061]
49159-65534	Unassigned
65535	Reserved for IETF-defined Chunk Extensions	[RFC9260]

Chunk Flags

Registration Procedure(s)

RFC Required

Reference

[RFC9260]

DATA Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	E bit	[RFC9260]
0x02	B bit	[RFC9260]
0x04	U bit	[RFC9260]
0x08	I bit	[RFC9260]
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

INIT Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

INIT ACK Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

SACK Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

HEARTBEAT Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

HEARTBEAT ACK Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

ABORT Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	T bit	[RFC9260]
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

SHUTDOWN Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

SHUTDOWN ACK Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

ERROR Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

COOKIE ECHO Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

COOKIE ACK Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

ECNE Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

CWR Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

SHUTDOWN COMPLETE Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	T bit	[RFC9260]
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

AUTH Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

I-DATA Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	E bit	[RFC8260]
0x02	B bit	[RFC8260]
0x04	U bit	[RFC8260]
0x08	I bit	[RFC8260]
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

ASCONF-ACK Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

RE-CONFIG Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

PAD Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

FORWARD TSN Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

ASCONF Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

I-FORWARD-TSN Chunk Flags

Available Formats: CSV

Chunk Flag Value	Chunk Flag Name	Reference
0x01	Unassigned
0x02	Unassigned
0x04	Unassigned
0x08	Unassigned
0x10	Unassigned
0x20	Unassigned
0x40	Unassigned
0x80	Unassigned

Error Cause Codes

Registration Procedure(s)

Specification Required

Expert(s)

Michael Tuexen, Randall Stewart

Reference

[RFC9260]

Available Formats

CSV

Value	Cause Code	Reference
1	Invalid Stream Identifier	[RFC9260]
2	Missing Mandatory Parameter	[RFC9260]
3	Stale Cookie	[RFC9260]
4	Out of Resource	[RFC9260]
5	Unresolvable Address	[RFC9260]
6	Unrecognized Chunk Type	[RFC9260]
7	Invalid Mandatory Parameter	[RFC9260]
8	Unrecognized Parameters	[RFC9260]
9	No User Data	[RFC9260]
10	Cookie Received While Shutting Down	[RFC9260]
11	Restart of an Association with New Addresses	[RFC9260]
12	User-Initiated Abort	[RFC9260]
13	Protocol Violation	[RFC9260]
14-159	Unassigned
160	Request to Delete Last Remaining IP Address	[RFC5061]
161	Operation Refused Due to Resource Shortage	[RFC5061]
162	Request to Delete Source IP Address	[RFC5061]
163	Association Aborted due to illegal ASCONF-ACK	[RFC5061]
164	Request refused - no authorization	[RFC5061]
165-260	Unassigned
261	Unsupported HMAC Identifier	[RFC4895]
262-65535	Unassigned

SCTP Payload Protocol Identifiers

Registration Procedure(s)

First Come First Served

Reference

[RFC9260]

Available Formats

CSV

Value	SCTP Payload Protocol Identifier	Reference	Date
0	Reserved by SCTP	[RFC9260]
1	IUA	[RFC4233]
2	M2UA	[RFC3331]
3	M3UA	[RFC4666]
4	SUA	[RFC3868]
5	M2PA	[RFC4165]
6	V5UA	[RFC3807]
7	H.248	[ITU-T Recommendation H.248 Annex H, "Transport over SCTP", November 2000.]
8	BICC/Q.2150.3	[ITU-T Recommendation Q.1902.1, "Bearer Independent Call Control protocol (Capability Set 2): Functional description", July 2001.][ITU-T Recommendation Q.2150.3, "Signalling Transport Converter On SCTP", to be published.]
9	TALI	[RFC3094]
10	DUA	[RFC4129]
11	ASAP	[RFC5352]
12	ENRP	[RFC5353]
13	H.323	[http://standard.pictel.com/ftp/avc-site/0206_Bru/AVD-2198.zip][H.323 over SCTP October 2002.]
14	Q.IPC/Q.2150.3	[ITU-T Recommendation Q.2631.1 "IP Connection Control Signaling Protocol - Capability Set 1", to be published.][ITU-T Recommendation Q.2150.3, "Signalling Transport Converter On SCTP", to be published.]
15	SIMCO <draft-kiesel-midcom-simco-sctp-00.txt>	[Sebastian_Kiesel]
16	DDP Segment Chunk	[RFC5043]
17	DDP Stream Session Control	[RFC5043]
18	S1 Application Protocol (S1AP)	[http://www.3gpp.org/ftp/Specs/latest/Rel-8/23_series/23401-840.zip][http://www.3gpp.org/Specification-Numbering][Rajeev_Koodli]
19	RUA	[http://www.3gpp.org/Specification-Numbering][http://www.3gpp.org/Specification-Numbering][John_Meredith]	2009年05月28日
20	HNBAP	[http://www.3gpp.org/Specification-Numbering][TS 25.469][John_Meredith]	2009年05月28日
21	ForCES-HP	[RFC5811]	2009年08月04日
22	ForCES-MP	[RFC5811]	2009年08月04日
23	ForCES-LP	[RFC5811]	2009年08月04日
24	SBc-AP	[http://www.3gpp.org/Specification-Numbering][Kimmo_Kymalainen]	2009年08月20日
25	NBAP	[http://www.3gpp.org/Specification-Numbering][Kimmo_Kymalainen]	2009年08月28日
26	Unassigned
27	X2AP	[http://www.3gpp.org/Specification-Numbering][Kimmo_Kymalainen]	2009年08月28日
28	IRCP - Inter Router Capability Protocol	[Randall_Stewart]	2010年04月13日
29	LCS-AP	[http://www.3gpp.org/Specification-Numbering][Kimmo_Kymalainen]	2010年06月03日
30	MPICH2	[Michael_Tuexen][http://www.mcs.anl.gov/research/projects/mpich2/]	2010年06月14日
31	Service Area Broadcast Protocol (SABP)	[http://www.3gpp.org/Specification-Numbering][http://www.3gpp.org/Specification-Numbering][John_Meredith]	2010年09月29日
32	Fractal Generator Protocol (FGP)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
33	Ping Pong Protocol (PPP)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
34	CalcApp Protocol (CALCAPP)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
35	Scripting Service Protocol (SSP)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
36	NetPerfMeter Protocol Control Channel (NPMP-CONTROL)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/netperfmeter/]
37	NetPerfMeter Protocol Data Channel (NPMP-DATA)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/netperfmeter/]
38	Echo (ECHO)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
39	Discard (DISCARD)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
40	Daytime (DAYTIME)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
41	Character Generator (CHARGEN)	[Thomas_Dreibholz][https://www.nntb.no/~dreibh/rserpool/]
42	3GPP RNA	[Tonesi][http://www.3gpp.org/ftp/specs/html-info/25471.htm]	2011年02月04日
43	3GPP M2AP	[Tonesi][http://www.3gpp.org/ftp/specs/html-info/36442.htm][http://www.3gpp.org/ftp/specs/html-info/36443.htm]	2011年02月04日
44	3GPP M3AP	[Tonesi][http://www.3gpp.org/ftp/specs/html-info/36442.htm][http://www.3gpp.org/ftp/specs/html-info/36444.htm]	2011年02月04日
45	SSH over SCTP	[Michael_Tuexen]	2011年03月14日
46	Diameter in a SCTP DATA chunk	[RFC6733]
47	Diameter in a DTLS/SCTP DATA chunk	[RFC6733]
48	R14P. BER Encoded ASN.1 over SCTP	[Josip_Djuricic][http://www.release14.org/wp-content/uploads/2012/07/r14p.asn]
49	Generic Data Transfer (GDT) Protocol	[Damir_Franusic][https://github.com/link-mink]	2021年08月13日
50	WebRTC DCEP	[RFC8832]	2013年09月20日
51	WebRTC String	[RFC8831]	2013年09月20日
52	WebRTC Binary Partial (deprecated)	[RFC8831]	2013年09月20日
53	WebRTC Binary	[RFC8831]	2013年09月20日
54	WebRTC String Partial (deprecated)	[RFC8831]	2013年09月20日
55	3GPP PUA	[Dario_S_Tonesi][http://www.3gpp.org/DynaReport/25470.htm][http://www.3gpp.org/DynaReport/25467.htm]	2014年01月03日
56	WebRTC String Empty	[RFC8831]	2014年08月22日
57	WebRTC Binary Empty	[RFC8831]	2014年08月22日
58	3GPP XwAP	[ 3GPP TS 36.462][KIMBA_DIT_ADAMOU_Boubacar]	2015年10月19日
59	3GPP Xw-Control Plane	[ 3GPP TS 36.462][KIMBA_DIT_ADAMOU_Boubacar]	2015年11月17日
60	3GPP NG Application Protocol (NGAP)	[ 3GPP TS 38.413][Luis_Lopes]	2017年04月20日
61	3GPP Xn Application Protocol (XnAP)	[ 3GPP TS 38.423][Luis_Lopes]	2017年04月20日
62	3GPP F1 Application Protocol (F1 AP)	[ 3GPP TS 38.473][Luis_Lopes]	2017年06月09日
63	HTTP/SCTP	[Michael_Tuexen]	2018年03月20日
64	3GPP E1 Application Protocol (E1AP)	[ 3GPP TS 38.463][Yang_Xudong]	2018年05月07日
65	ELE2 Lawful Interception	[http://ele2.io][Damir_Franusic]	2019年03月11日
66	3GPP NGAP over DTLS over SCTP	[ 3GPP TS 38.413][Yang_Xudong]	2019年05月24日
67	3GPP XnAP over DTLS over SCTP	[ 3GPP TS 38.423][Yang_Xudong]	2019年05月24日
68	3GPP F1AP over DTLS over SCTP	[ 3GPP TS 38.473][Yang_Xudong]	2019年05月24日
69	3GPP E1AP over DTLS over SCTP	[ 3GPP TS 38.463][Yang_Xudong]	2019年05月24日
70	E2-CP	[O-RAN_Alliance][Jun_Hyuk_Song]	2019年07月16日
71	O-RAN D2	[O-RAN_Alliance][Jun_Hyuk_Song]	2019年07月16日
72	E2-DU	[O-RAN_Alliance][Jun_Hyuk_Song]	2019年07月16日
73	3GPP W1AP	[3GPP TS 37.473][Lionel_Morand]	2020年06月26日
74-4241	Unassigned
4242	DTLS Chunk Key-Management Messages	[draft-westerlund-tsvwg-sctp-dtls-chunk-01]	2024年04月19日
4243-4294967295	Unassigned

Hashed Message Authentication Code (HMAC) Identifiers

Registration Procedure(s)

Specification Required

Expert(s)

Unassigned

Reference

[RFC4895]

Available Formats

CSV

HMAC Identifier	Message Digest Algorithm	Reference
0	Reserved	[RFC4895]
1	SHA-1	[RFC4895]
2	Reserved	[RFC4895]
3	SHA-256	[RFC4895]
4-65535	Unassigned

Adaptation Code Points

Registration Procedure(s)

IETF Review

Reference

[RFC5061]

Available Formats

CSV

Code Point (32-bit number)	Description	Reference
0	Unassigned	[RFC5061]
0x00000001	DDP	[RFC5043]
0x00000002-0xffffffff	Unassigned	[RFC5061]

Error Detection Methods

Registration Procedure(s)

Specification Required

Expert(s)

Michael Tuexen, Magnus Westerlund

Reference

[RFC9653]

Available Formats

CSV

ID Value	Error Detection Method	Reference
0	Reserved	[RFC9653]
1	SCTP over DTLS	[RFC9653]
2-4294967295	Unassigned

Contact Information

ID	Name	Contact URI	Last Updated
[Damir_Franusic]	Damir Franusic	mailto:damir.franusic&gmail.com	2021年08月13日
[Dario_S_Tonesi]	Dario S Tonesi	mailto:dario.tonesi&nsn.com	2014年01月03日
[John_Meredith]	John Meredith	mailto:john.meredith&etsi.org	2010年09月29日
[Josip_Djuricic]	Josip Djuricic	mailto:jd&release14.org	2012年06月08日
[Jun_Hyuk_Song]	Jun Hyuk Song	mailto:junhyuk.song&samsung.com	2019年07月16日
[KIMBA_DIT_ADAMOU_Boubacar]	KIMBA DIT ADAMOU, Boubacar	mailto:jinba&chinamobile.com	2015年11月17日
[Kimmo_Kymalainen]	Kimmo Kymalainen	mailto:kimmo.kymalainen&etsi.org	2010年06月03日
[Lionel_Morand]	Lionel Morand	mailto:lionel.morand&orange.com	2020年06月26日
[Luis_Lopes]	Luis Lopes	mailto:llopes&qti.qualcomm.com	2017年04月20日
[Michael_Tuexen]	Michael Tuexen	mailto:tuexen&fh-muenster.de	2018年03月20日
[O-RAN_Alliance]	O-RAN Alliance	https://www.o-ran.org	2019年07月16日
[Rajeev_Koodli]	Rajeev Koodli	mailto:rkoodli&starentnetworks.com	2008年12月19日
[Randall_Stewart]	Randall Stewart	mailto:rrs&lakerest.net	2010年04月13日
[Sebastian_Kiesel]	Sebastian Kiesel	mailto:kiesel&ikr.uni-stuttgart.de	2006年03月22日
[Thomas_Dreibholz]	Thomas Dreibholz	mailto:dreibh&simula.no	2025年10月07日
[Yang_Xudong]	Yang Xudong	mailto:yangxudong&huawei.com	2019年05月24日