[Open-FCoE] Initiator and Target setup

Mohanraj Krishnaraj Mohanraj.Krishnaraj at bladenetwork.net
Thu Jan 29 21:25:58 UTC 2009


Hi Joe,

    We are using the FCoE software that is mentioned in the
initiator/target quick start guide. We are not using any switch between
the two hosts. On both Initiator and Target, FLOGIs are going to
0x0efc00fffffe and not to 0x000efcfffffe as you have mentioned. We are
only seeing FLOGI frames (sent over FCoE packet). No LS_ACC or any other
frames. When 0x000efcfffffe was added as a capture filter, no packets
were captured.

Here are the captured packets:
FCoE Initiator:

1    0.000000    00.00.00    ff.ff.fe    FC ELS    FLOGI
2    1.999775    00.00.00    ff.ff.fe    FC ELS    FLOGI
3    3.999314    00.00.00    ff.ff.fe    FC ELS    FLOGI

0000  0e fc 00 ff ff fe 00 1b  21 24 0f fa 89 06 00 00   ........
!$......
0010  00 00 00 00 00 00 00 00  00 00 00 2e 22 ff ff fe   ........
...."...
0020  00 00 00 00 01 29 00 00  00 00 00 00 01 a7 ff ff   .....)..
........
0030  00 00 00 00 04 00 00 00  20 20 00 0a 00 00 05 ac   ........
......
0040  00 00 00 00 00 00 00 00  20 00 00 1b 21 24 0f fa   ........
...!$..
0050  10 00 00 1b 21 24 0f fa  00 00 00 00 00 00 00 00   ....!$..
........
0060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ........
........
0070  00 00 00 00 00 00 00 00  88 00 00 00 00 00 00 00   ........
........
0080  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ........
........
0090  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ........
........
00a0  00 00 00 00 00 00 00 00  aa 12 f5 d3 42 00 00 00   ........
....B...

FCoE Target:

1    0.000000    00.00.00    ff.ff.fe    FC ELS    FLOGI
2    1.999987    00.00.00    ff.ff.fe    FC ELS    FLOGI
3    3.999986    00.00.00    ff.ff.fe    FC ELS    FLOGI

0000  0e fc 00 ff ff fe 00 1b  21 24 0f fa 89 06 00 00   ........
!$......
0010  00 00 00 00 00 00 00 00  00 00 00 2e 22 ff ff fe   ........
...."...
0020  00 00 00 00 01 29 00 00  00 00 00 00 01 d9 ff ff   .....)..
........
0030  00 00 00 00 04 00 00 00  20 20 00 0a 00 00 05 ac   ........
......
0040  00 00 00 00 00 00 00 00  20 00 00 1b 21 24 0f fa   ........
...!$..
0050  10 00 00 1b 21 24 0f fa  00 00 00 00 00 00 00 00   ....!$..
........
0060  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ........
........
0070  00 00 00 00 00 00 00 00  88 00 00 00 00 00 00 00   ........
........
0080  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ........
........
0090  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ........
........
00a0  00 00 00 00 00 00 00 00  82 51 8d 86 42 00 00 00   ........
.Q..B...


Thanks,
Mohan

-----Original Message-----
From: Joe Eykholt [mailto:jre at nuovasystems.com] 
Sent: Thursday, January 29, 2009 11:58 AM
To: Mohanraj Krishnaraj
Cc: devel at open-fcoe.org; Rakesh Saha; Chetan Yaliwal
Subject: Re: [Open-FCoE] Initiator and Target setup

Mohanraj Krishnaraj wrote:
> Hi,
> 
>  
> 
>     I need help with the initiator and target setup. I have followed
the
> instructions in the FCoE Initiator Quickstart and FCoE Target
Quickstart
> guide. The documents mentions that both the devices can be connected
as
> a back-to-back. I can see both the initiator and target sending
"FLOGI"
> frames in Wireshark.  I don't see any response to the FLOGI frames. Is
> there anything else I am missing in the setup?

That should work.  They should both answer the FLOGI frames.  Wireshark
doesn't identify the response as FLOGI response because the D_ID of the
response differs from the S_ID of the FLOGI request.  It's messy to fix
in Wireshark, but one of these days it may get fixed anyway.
So, you may have the response there, but not have noticed it, perhaps.

It may be the old OUI mismatch problem.  It used to be that we sent
the FLOGIs to 0xfcfcfcfffffe.  Now they go to 0x000efcfffffe.  So that
last address should be added to the unicast receive filters.  To see if
that might be the problem, be sure that both are sending to the same
MAC address and try putting both sides in promiscuous mode to see if
that helps.

Also, avoid having any switch in between the two hosts.  It shouldn't
cause any problem here, though.

Do you see anything besides FLOGI frames?

If you post your trace, maybe someone will see something.
Just the FLOGI frames and any subsequent LS_ACC frames that you see
should
be enough.   You could post them in text or send me the binary trace
from
wireshark.

	Cheers,
	Joe



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