Internet Small Computer System Interface (iSCSI) Parameters

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

XML
HTML
TXT

Registries Included Below

iSCSI authentication methods

Registration Procedure(s)
IETF Review
Reference
[RFC 7143]
Available Formats

CSV
Number Authentication Method Reference
0 Reserved
1 CHAP [RFC 7143]
2 SRP [RFC 7143]
3 KRB5 [RFC 7143]
4 SPKM1 (OBSOLETE) [RFC 7143]
5 SPKM2 (OBSOLETE) [RFC 7143]
6-255 Reserved (Not assigned by IANA) [RFC 7143]
256-65535 Unassigned

iSCSI digests

Registration Procedure(s)
IETF Review
Reference
[RFC 7143]
Available Formats

CSV
Number Digest Reference
0 Reserved [RFC 7143]
1 CRC32c [RFC 7143]
2-255 Reserved (Not assigned by IANA) [RFC 7143]
256-65535 Unassigned

SRP_GROUP key values

Registration Procedure(s)
Specification Required
Expert(s)
Unassigned
Reference
[RFC 3723]
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 [RFC 3723]
SRP-1024 1024 bit SRP group [RFC 3723]
SRP-1280 1280 bit SRP group [RFC 3723]
SRP-1536 1536 bit SRP group [RFC 3723]
SRP-2048 2048 bit SRP group [RFC 3723]
MODP-3072 3072 bit MODP group [RFC 3723]
MODP-4096 4096 bit MODP group [RFC 3723]
MODP-6144 6144 bit MODP group [RFC 3723]
MODP-8192 8192 bit MODP group [RFC 3723]

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
[RFC 7143]
Note
Namespace details: Numerical values that can fit in
one octet with most significant two bits (bits 0 and 1)
already designated by [RFC 7143], 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 [RFC 7143]
0x01 Initiator SCSI Command [RFC 7143]
0x02 Initiator SCSI Task Management Function Request [RFC 7143]
0x03 Initiator Login Request [RFC 7143]
0x04 Initiator Text Request [RFC 7143]
0x05 Initiator SCSI Data-Out [RFC 7143]
0x06 Initiator Logout Request [RFC 7143]
0x10 Initiator SNACK Request [RFC 7143]
0x1c-0x1e Initiator Vendor-specific codes [RFC 7143]
0x20 Target NOP-In [RFC 7143]
0x21 Target SCSI Response [RFC 7143]
0x22 Target SCSI Task Management Function Response [RFC 7143]
0x23 Target Login Response [RFC 7143]
0x24 Target Text Response [RFC 7143]
0x25 Target SCSI Data-In [RFC 7143]
0x26 Target Logout Response [RFC 7143]
0x31 Target Ready To Transfer (R2T) [RFC 7143]
0x32 Target Asynchronous Message [RFC 7143]
0x3c-0x3e Target Vendor-specific codes [RFC 7143]
0x3f Target Reject [RFC 7143]

iSCSI Login/Text Keys

Registration Procedure(s)
IETF Review
Reference
[RFC 7145][RFC 7143]
Available Formats

CSV
Key Reference
AuthMethod [RFC 7143]
DataDigest [RFC 7143]
DataPDUInOrder [RFC 7143]
DataSequenceInOrder [RFC 7143]
DefaultTime2Retain [RFC 7143]
DefaultTime2Wait [RFC 7143]
ErrorRecoveryLevel [RFC 7143]
FirstBurstLength [RFC 7143]
HeaderDigest [RFC 7143]
ImmediateData [RFC 7143]
InitialR2T [RFC 7143]
InitiatorAlias [RFC 7143]
InitiatorName [RFC 7143]
InitiatorRecvDataSegmentLength [RFC 7145]
iSCSIProtocolLevel [RFC 7144]
iSERHelloRequired [RFC 7145]
MaxAHSLength [RFC 7145]
MaxBurstLength [RFC 7143]
MaxConnections [RFC 7143]
MaxOutstandingR2T [RFC 7143]
MaxOutstandingUnexpectedPDUs [RFC 7145]
MaxRecvDataSegmentLength [RFC 7143]
RDMAExtensions [RFC 7145]
SendTargets [RFC 7143]
SessionType [RFC 7143]
TaggedBufferForSolicitedDataOnly [RFC 7145]
TargetAddress [RFC 7143]
TargetAlias [RFC 7143]
TargetName [RFC 7143]
TargetPortalGroupTag [RFC 7143]
TargetRecvDataSegmentLength [RFC 7145]
TaskReporting [RFC 7143]
X#NodeArchitecture [RFC 7143]

iSCSI Asynchronous Events

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
Event Number
(one octet)		 Description Reference
0 SCSI Async Event [RFC 7143]
1 Logout Request [RFC 7143]
2 Connection drop notification [RFC 7143]
3 Session drop notification [RFC 7143]
4 Negotiation Request [RFC 7143]
5 Task termination [RFC 7143]
6-247 Unassigned
248-254 Vendor-unique [RFC 7143]
255 Vendor-unique [RFC 7143]

iSCSI Task Management Function Codes

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
TMF Code
(7 bits)		 Description Reference
1 ABORT TASK [RFC 7143]
2 ABORT TASK SET [RFC 7143]
3 CLEAR ACA [RFC 7143]
4 CLEAR TASK SET [RFC 7143]
5 LOGICAL UNIT RESET [RFC 7143]
6 TARGET WARM RESET [RFC 7143]
7 TARGET COLD RESET [RFC 7143]
8 TASK REASSIGN [RFC 7143]
9 QUERY TASK [RFC 7144]
10 QUERY TASK SET [RFC 7144]
11 I_T NEXUS RESET [RFC 7144]
12 QUERY ASYNCHRONOUS EVENT [RFC 7144]
13-127 Unassigned

iSCSI Login Response Status Codes

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
Status Class
(one octet)		 Description Reference
0x00 Success [RFC 7143]
0x01 Redirection [RFC 7143]
0x02 Initiator Error [RFC 7143]
0x03 Target Error [RFC 7143]
0x04-0x0e Unassigned
0x0f Vendor-Unique [RFC 7143]
0x10-0xff Unassigned

Status-Detail for Status-Class=0x00

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x00 0x00 Success [RFC 7143]
0x00 0x01-0xff Unassigned

Status-Detail for Status-Class=0x01

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x01 0x01 Target moved temporarily [RFC 7143]
0x01 0x02 Target moved permanently [RFC 7143]
0x01 0x03-0xff Unassigned

Status-Detail for Status-Class=0x02

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x02 0x00 Initiator error [RFC 7143]
0x02 0x01 Authentication failure [RFC 7143]
0x02 0x02 Authorization failure [RFC 7143]
0x02 0x03 Not found [RFC 7143]
0x02 0x04 Target removed [RFC 7143]
0x02 0x05 Unsupported version [RFC 7143]
0x02 0x06 Too many connections [RFC 7143]
0x02 0x07 Missing parameter [RFC 7143]
0x02 0x08 Can't include in session [RFC 7143]
0x02 0x09 Session type not supported [RFC 7143]
0x02 0x0a Session does not exist [RFC 7143]
0x02 0x0b Invalid during login [RFC 7143]
0x02 0x0c-0xff Unassigned

Status-Detail for Status-Class=0x03

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
Status Class
(fixed)		 Status Code
(one octet)		 Description Reference
0x03 0x00 Target error [RFC 7143]
0x03 0x01 Service unavailable [RFC 7143]
0x03 0x02 Out of resources [RFC 7143]
0x03 0x03-0xff Unassigned

iSCSI Reject Reason Codes

Registration Procedure(s)
Standards Action
Reference
[RFC 7143]
Available Formats

CSV
Reason Code
(one octet)		 Description Reference
0x01 Reserved [RFC 7143]
0x02 Data digest error [RFC 7143]
0x03 SNACK Reject [RFC 7143]
0x04 Protocol Error [RFC 7143]
0x05 Command not supported [RFC 7143]
0x06 Immediate command reject [RFC 7143]
0x07 Task in progress [RFC 7143]
0x08 Invalid data ack [RFC 7143]
0x09 Invalid PDU field [RFC 7143]
0x0a Long op reject [RFC 7143]
0x0b "Deprecated reason code" [RFC 7143]
0x0c Waiting for Logout [RFC 7143]
0x0d-0xff Unassigned

iSER Opcodes

Registration Procedure(s)
Standards Action
Reference
[RFC 7145]
Available Formats

CSV
Value Description Reference
0x1 iSCSI control-type PDU [RFC 7145]
0x2 iSER Hello Message [RFC 7145]
0x3 iSER HelloReply Message [RFC 7145]
0x4-0xf Unassigned

iSCSI Protocol Level

Registration Procedure(s)
Expert Review and Standards Action
Expert(s)
Unassigned
Reference
[RFC 7144]
Available Formats

CSV
Value Description Reference
0 No version claimed [RFC 7144]
1 RFC7143 [RFC 7143]
2 RFC7144 [RFC 7144]
3-31 Unassigned

iSCSI Task Management Function Response Codes

Registration Procedure(s)
Standards Action
Reference
[RFC 7144]
Available Formats

CSV
Value Operation Name Reference
0 Function complete [RFC 7143]
1 Task does not exist [RFC 7143]
2 LUN does not exist [RFC 7143]
3 Task still allegiant [RFC 7143]
4 Task allegiance reassignment not supported [RFC 7143]
5 Task management function not supported [RFC 7143]
6 Function authorization failed [RFC 7143]
7 Function succeeded [RFC 7144]
8-254 Unassigned
255 Function rejected [RFC 7143]