Internet Assigned Numbers Authority

Internet Small Computer System Interface (iSCSI) Parameters

Created
2003-04-16
Last Updated
2014-04-08
Available Formats

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Registries included below

iSCSI authentication methods

Registration Procedure(s)
IETF Review
Reference
[RFC7143]
Available Formats

CSV
Number Authentication Method Reference
0 Reserved
1 CHAP [RFC7143]
2 SRP [RFC7143]
3 KRB5 [RFC7143]
4 SPKM1 (OBSOLETE) [RFC7143]
5 SPKM2 (OBSOLETE) [RFC7143]
6-255 Reserved (Not assigned by IANA) [RFC7143]
256-65535 Unassigned

iSCSI digests

Registration Procedure(s)
IETF Review
Reference
[RFC7143]
Available Formats

CSV
Number Digest Reference
0 Reserved [RFC7143]
1 CRC32c [RFC7143]
2-255 Reserved (Not assigned by IANA) [RFC7143]
256-65535 Unassigned

SRP_GROUP key values

Registration Procedure(s)
Specification Required
Expert(s)
Unassigned
Reference
[RFC3723]
Note
When a MODP group is used with SRP, the generator (g)
value differs from the usual generator of 2.  Consult the
appropriate reference for the correct generator to use.
Available Formats

CSV
Key Value Group Description Reference
SRP-768 768 bit SRP group [RFC3723]
SRP-1024 1024 bit SRP group [RFC3723]
SRP-1280 1280 bit SRP group [RFC3723]
SRP-1536 1536 bit SRP group [RFC3723]
SRP-2048 2048 bit SRP group [RFC3723]
MODP-3072 3072 bit MODP group [RFC3723]
MODP-4096 4096 bit MODP group [RFC3723]
MODP-6144 6144 bit MODP group [RFC3723]
MODP-8192 8192 bit MODP group [RFC3723]

iSCSI Opcodes

Registration Procedure(s)
Standards Action to define the semantics of the opcode;
Expert Review to select the specific opcode(s)
Expert(s)
Unassigned
Reference
[RFC7143]
Note
Namespace details: Numerical values that can fit in
one octet with most significant two bits (bits 0 and 1)
already designated by [RFC7143], bit 0 being reserved and
bit 1 for immediate delivery. Bit 2 is designated to identify
the originator of the opcode. Bit 2 = 0 for initiator and
Bit 2 = 1 for target.
Note
Reserved to IANA:
    0x07-0x0f, 0x13-0x1b (initiator codes)
    0x27-0x2f, 0x33-0x3b (target codes)

Reserved to IANA for allocation only if no opcode pair is available:
    0x11, 0x12, 0x1f (initiator codes)
    0x30 (target codes)
Available Formats

CSV
Opcode Originator Operation Name Reference
0x00 Initiator NOP-Out [RFC7143]
0x01 Initiator SCSI Command [RFC7143]
0x02 Initiator SCSI Task Management Function Request [RFC7143]
0x03 Initiator Login Request [RFC7143]
0x04 Initiator Text Request [RFC7143]
0x05 Initiator SCSI Data-Out [RFC7143]
0x06 Initiator Logout Request [RFC7143]
0x10 Initiator SNACK Request [RFC7143]
0x1c-0x1e Initiator Vendor-specific codes [RFC7143]
0x20 Target NOP-In [RFC7143]
0x21 Target SCSI Response [RFC7143]
0x22 Target SCSI Task Management Function Response [RFC7143]
0x23 Target Login Response [RFC7143]
0x24 Target Text Response [RFC7143]
0x25 Target SCSI Data-In [RFC7143]
0x26 Target Logout Response [RFC7143]
0x31 Target Ready To Transfer (R2T) [RFC7143]
0x32 Target Asynchronous Message [RFC7143]
0x3c-0x3e Target Vendor-specific codes [RFC7143]
0x3f Target Reject [RFC7143]

iSCSI Login/Text Keys

Registration Procedure(s)
IETF Review
Reference
[RFC7145][RFC7143]
Available Formats

CSV
Key Reference
AuthMethod [RFC7143]
DataDigest [RFC7143]
DataPDUInOrder [RFC7143]
DataSequenceInOrder [RFC7143]
DefaultTime2Retain [RFC7143]
DefaultTime2Wait [RFC7143]
ErrorRecoveryLevel [RFC7143]
FirstBurstLength [RFC7143]
HeaderDigest [RFC7143]
ImmediateData [RFC7143]
InitialR2T [RFC7143]
InitiatorAlias [RFC7143]
InitiatorName [RFC7143]
InitiatorRecvDataSegmentLength [RFC7145]
iSCSIProtocolLevel [RFC7144]
iSERHelloRequired [RFC7145]
MaxAHSLength [RFC7145]
MaxBurstLength [RFC7143]
MaxConnections [RFC7143]
MaxOutstandingR2T [RFC7143]
MaxOutstandingUnexpectedPDUs [RFC7145]
MaxRecvDataSegmentLength [RFC7143]
RDMAExtensions [RFC7145]
SendTargets [RFC7143]
SessionType [RFC7143]
TaggedBufferForSolicitedDataOnly [RFC7145]
TargetAddress [RFC7143]
TargetAlias [RFC7143]
TargetName [RFC7143]
TargetPortalGroupTag [RFC7143]
TargetRecvDataSegmentLength [RFC7145]
TaskReporting [RFC7143]
X#NodeArchitecture [RFC7143]

iSCSI Asynchronous Events

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
Event Number
(one octet)		 Description Reference
0 SCSI Async Event [RFC7143]
1 Logout Request [RFC7143]
2 Connection drop notification [RFC7143]
3 Session drop notification [RFC7143]
4 Negotiation Request [RFC7143]
5 Task termination [RFC7143]
6-247 Unassigned
248-254 Vendor-unique [RFC7143]
255 Vendor-unique [RFC7143]

iSCSI Task Management Function Codes

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
TMF Code
(7 bits)		 Description Reference
1 ABORT TASK [RFC7143]
2 ABORT TASK SET [RFC7143]
3 CLEAR ACA [RFC7143]
4 CLEAR TASK SET [RFC7143]
5 LOGICAL UNIT RESET [RFC7143]
6 TARGET WARM RESET [RFC7143]
7 TARGET COLD RESET [RFC7143]
8 TASK REASSIGN [RFC7143]
9 QUERY TASK [RFC7144]
10 QUERY TASK SET [RFC7144]
11 I_T NEXUS RESET [RFC7144]
12 QUERY ASYNCHRONOUS EVENT [RFC7144]
13-127 Unassigned

iSCSI Login Response Status Codes

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
Status Class
(one octet)		 Description Reference
0x00 Success [RFC7143]
0x01 Redirection [RFC7143]
0x02 Initiator Error [RFC7143]
0x03 Target Error [RFC7143]
0x04-0x0e Unassigned
0x0f Vendor-Unique [RFC7143]
0x10-0xff Unassigned

Status-Detail for Status-Class=0x00

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x00 0x00 Success [RFC7143]
0x00 0x01-0xff Unassigned

Status-Detail for Status-Class=0x01

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x01 0x01 Target moved temporarily [RFC7143]
0x01 0x02 Target moved permanently [RFC7143]
0x01 0x03-0xff Unassigned

Status-Detail for Status-Class=0x02

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x02 0x00 Initiator error [RFC7143]
0x02 0x01 Authentication failure [RFC7143]
0x02 0x02 Authorization failure [RFC7143]
0x02 0x03 Not found [RFC7143]
0x02 0x04 Target removed [RFC7143]
0x02 0x05 Unsupported version [RFC7143]
0x02 0x06 Too many connections [RFC7143]
0x02 0x07 Missing parameter [RFC7143]
0x02 0x08 Can't include in session [RFC7143]
0x02 0x09 Session type not supported [RFC7143]
0x02 0x0a Session does not exist [RFC7143]
0x02 0x0b Invalid during login [RFC7143]
0x02 0x0c-0xff Unassigned

Status-Detail for Status-Class=0x03

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x03 0x00 Target error [RFC7143]
0x03 0x01 Service unavailable [RFC7143]
0x03 0x02 Out of resources [RFC7143]
0x03 0x03-0xff Unassigned

iSCSI Reject Reason Codes

Registration Procedure(s)
Standards Action
Reference
[RFC7143]
Available Formats

CSV
Reason Code
(one octet)		 Description Reference
0x01 Reserved [RFC7143]
0x02 Data digest error [RFC7143]
0x03 SNACK Reject [RFC7143]
0x04 Protocol Error [RFC7143]
0x05 Command not supported [RFC7143]
0x06 Immediate command reject [RFC7143]
0x07 Task in progress [RFC7143]
0x08 Invalid data ack [RFC7143]
0x09 Invalid PDU field [RFC7143]
0x0a Long op reject [RFC7143]
0x0b "Deprecated reason code" [RFC7143]
0x0c Waiting for Logout [RFC7143]
0x0d-0xff Unassigned

iSER Opcodes

Registration Procedure(s)
Standards Action
Reference
[RFC7145]
Available Formats

CSV
Value Description Reference
0x1 iSCSI control-type PDU [RFC7145]
0x2 iSER Hello Message [RFC7145]
0x3 iSER HelloReply Message [RFC7145]
0x4-0xf Unassigned

iSCSI Protocol Level

Registration Procedure(s)
Expert Review and Standards Action
Expert(s)
Unassigned
Reference
[RFC7144]
Available Formats

CSV
Value Description Reference
0 No version claimed [RFC7144]
1 RFC7143 [RFC7143]
2 RFC7144 [RFC7144]
3-31 Unassigned

iSCSI Task Management Function Response Codes

Registration Procedure(s)
Standards Action
Reference
[RFC7144]
Available Formats

CSV
Value Operation Name Reference
0 Function complete [RFC7143]
1 Task does not exist [RFC7143]
2 LUN does not exist [RFC7143]
3 Task still allegiant [RFC7143]
4 Task allegiance reassignment not supported [RFC7143]
5 Task management function not supported [RFC7143]
6 Function authorization failed [RFC7143]
7 Function succeeded [RFC7144]
8-254 Unassigned
255 Function rejected [RFC7143]