Ethereal-users: Re: [Ethereal-users] LUN==FFFF?

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From: ronnie sahlberg <ronniesahlberg@xxxxxxxxx>
Date: Thu, 17 Mar 2005 06:55:54 +1100
I made it print the lun as FFFF when it failed to track it for some reason.

can you send me an example capture to look at and i will fix it.



On Wed, 16 Mar 2005 09:00:55 -0500, ESQuicksall_Misc
<ESQuicksall_Misc@xxxxxxxxxxx> wrote:
> I am using 0.10.10. In the below packet, Ethereal shows the LUN to be
> 0xFFFF. But the PDU shows it to be 0. Why?
> 
> No.     Time        Source                Destination           Protocol
> Info                                                            Length Src
> port Dest port
>     23 13.465488   192.168.50.225        192.168.50.249        iSCSI
> SCSI: Test Unit Ready LUN: 0xffff                               102    1088
> 3260
> 
> Frame 23 (102 bytes on wire, 102 bytes captured)
>    Arrival Time: Mar 15, 2005 17:52:08.564982000
>    Time delta from previous packet: 1.683908000 seconds
>    Time since reference or first frame: 13.465488000 seconds
>    Frame Number: 23
>    Packet Length: 102 bytes
>    Capture Length: 102 bytes
>    Protocols in frame: eth:ip:tcp:iscsi
> Ethernet II, Src: 00:c0:9f:29:70:6f, Dst: 00:e0:02:e3:13:a6
>    Destination: 00:e0:02:e3:13:a6 (Crossroa_e3:13:a6)
>    Source: 00:c0:9f:29:70:6f (QuantaCo_29:70:6f)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 192.168.50.225 (192.168.50.225), Dst Addr:
> 192.168.50.249 (192.168.50.249)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 88
>    Identification: 0x043d (1085)
>    Flags: 0x04 (Don't Fragment)
>        0... = Reserved bit: Not set
>        .1.. = Don't fragment: Set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: TCP (0x06)
>    Header checksum: 0x0000 (incorrect, should be 0x0f38)
>    Source: 192.168.50.225 (192.168.50.225)
>    Destination: 192.168.50.249 (192.168.50.249)
> Transmission Control Protocol, Src Port: 1088 (1088), Dst Port: 3260 (3260),
> Seq: 3309122109, Ack: 2686484998, Len: 48
>    Source port: 1088 (1088)
>    Destination port: 3260 (3260)
>    Sequence number: 3309122109
>    Next sequence number: 3309122157
>    Acknowledgement number: 2686484998
>    Header length: 20 bytes
>    Flags: 0x0018 (PSH, ACK)
>        0... .... = Congestion Window Reduced (CWR): Not set
>        .0.. .... = ECN-Echo: Not set
>        ..0. .... = Urgent: Not set
>        ...1 .... = Acknowledgment: Set
>        .... 1... = Push: Set
>        .... .0.. = Reset: Not set
>        .... ..0. = Syn: Not set
>        .... ...0 = Fin: Not set
>    Window size: 64191
>    Checksum: 0xe775 (incorrect, should be 0xa036)
> iSCSI (SCSI Command)
>    Opcode: SCSI Command (0x01)
>    .0.. .... = I: Queued delivery
>    Flags: 0x80
>        1... .... = F: Final PDU in sequence
>        .0.. .... = R: No data will be read from target
>        ..0. .... = W: No data will be written to target
>        .... .000 = Attr: Untagged (0x00)
>    TotalAHSLength: 0x00
>    DataSegmentLength: 0x00000000
>    LUN: 0000000000000000
>    InitiatorTaskTag: 0x00000074
>    ExpectedDataTransferLength: 0x00000000
>    CmdSN: 0x00000074
>    ExpStatSN: 0x00000075
> SCSI CDB
>    LUN: 0xffff
>    Opcode: Test Unit Ready (0x00)
>    Vendor Unique = 0, NACA = 0, Link = 0
> 
> 0000  00 e0 02 e3 13 a6 00 c0 9f 29 70 6f 08 00 45 00   .........)po..E.
> 0010  00 58 04 3d 40 00 80 06 00 00 c0 a8 32 e1 c0 a8   [email protected]...
> 0020  32 f9 04 40 0c bc c5 3d 32 3d a0 20 82 06 50 18   2..@...=2=. ..P.
> 0030  fa bf e7 75 00 00 01 80 00 00 00 00 00 00 00 00   ...u............
> 0040  00 00 00 00 00 00 00 00 00 74 00 00 00 00 00 00   .........t......
> 0050  00 74 00 00 00 75 00 00 00 00 00 00 00 00 00 00   .t...u..........
> 0060  00 00 00 00 00 00                                 ......
> 
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