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| dotaneli |
 Posted: Wed Mar 11, 2009 11:59 pm Post subject: TCP Error |
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Voyager
Joined: 19 Oct 2005
Posts: 99
Location: Israel
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Hey guys.
OS=Win
MQ=6.0.0.3
Got clients connecting via explorer or MQMon (m071 s.p.) and connections are being reset, exactly every 10 mins.
Got the Hearbit set to 300.
Error code is:
AMQ9208
TCP/IP Ret. code - 10054(X'2746'). What could be the cause of that?
10x in advance. |
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| Mr Butcher |
| Posted: Thu Mar 12, 2009 12:05 am Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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what have you tried to find out what 10054 means? did you notice that search button on the right top of this page?
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Regards, Butcher |
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| exerk |
| Posted: Thu Mar 12, 2009 12:13 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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I'm in a generous mood...LOOK HERE...then look further.
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It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| dotaneli |
| Posted: Tue Mar 17, 2009 11:51 pm Post subject: |
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Voyager
Joined: 19 Oct 2005
Posts: 99
Location: Israel
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Ofcourse i know what it means. It doesn't help me much. I need a method of doing root-cause analysis.
Any one ever encountered an MQClient, connected only for use of MQExplorer, got this RC? |
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| exerk |
| Posted: Wed Mar 18, 2009 12:00 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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The point I was making was, as this happens exactly every 10 minutes, you should concentrate less on WMQ Client/MQExplorer and more on the infrastructure, e.g. server settings and/or firewall.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| dotaneli |
| Posted: Wed Mar 18, 2009 12:12 am Post subject: |
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Voyager
Joined: 19 Oct 2005
Posts: 99
Location: Israel
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Yeah well, my thoughts exactly.
However, timing is perfect.
It's not aprox. 10 mins. It's exactly 10 mins.
So - as a first step i'll try and connect from within the segment itself and/or localhost.
The second step, should the first one fail, will be to swap the network card.
But - what can possibly send a TCP REST every 10 mins exactly? |
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| exerk |
| Posted: Wed Mar 18, 2009 12:22 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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Speak with your network guys as they may probably give you an answer almost immediately. If you have a dodgy NIC I would expect the resets to be intermittent rather than perfectly spaced in time.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| dotaneli |
| Posted: Wed Mar 18, 2009 12:59 am Post subject: |
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Voyager
Joined: 19 Oct 2005
Posts: 99
Location: Israel
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It's so wierd... they have no firewall between the client and the server.
Any chance it's a router's problem?
The NIC is probarlly fine, as you said already.
Anything regarding MQ can cause it? HBIT or anything like that? |
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| exerk |
| Posted: Wed Mar 18, 2009 1:14 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| dotaneli wrote: |
| ...Any chance it's a router's problem?... |
Again, ask your network guys! Ask your server Sys Admins; are they doing anything squirrely on the servers?
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| mqjeff |
| Posted: Wed Mar 18, 2009 1:21 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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Also, have you considered reviewing all of the bugs that are fixed between version 6.0.0.3 of MQ and the most recent 6.0.2.6 version?
Or simply updating to the current v7 release? |
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| dotaneli |
| Posted: Wed Mar 18, 2009 1:32 am Post subject: |
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Voyager
Joined: 19 Oct 2005
Posts: 99
Location: Israel
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Hey.
I was wrong, the MQServer ver. is 6.0.1.0
I can't (client policy) upgrade the mqver right now.... It's a machine-swap procedure, which means that we re-install everything exactly the same on a new machine and make it PROD.
Phase 2 (a month from now) would be to upgrade versions.
However, i encountered something interesting.
Another client joined the fiesco. Meaning, another MQExplorer pc disconnects exactly every 10 mins. Not only that, but after the first time the second machine has disconnected, it started to disconnect in sync with the first machine. That is - every 10 mins exactly, on the exact same second - for both machines (both on the 57th second).
And - both machines come from the same segment which is not the server's segment. |
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| dotaneli |
| Posted: Wed Mar 18, 2009 2:42 am Post subject: |
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Voyager
Joined: 19 Oct 2005
Posts: 99
Location: Israel
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Okay, un update.
I installed a wireshark on the client's machine as well.
Started the MQEXplorer, defined autoreconnect.
Every 2 mins (on the second) i can actuall see the RST packet the disconnects the client.
It's always:
Server->Client: INQUIRE_CLUSTER_Q_MGR
Client->Server: Ack
Server->Client: RST, ACK
Another thing that happens: on the client's side, lots and lots of packets have bad checksum, TCP wise...
Any furthur ideas on how to continue? |
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| dotaneli |
| Posted: Wed Mar 18, 2009 3:34 am Post subject: |
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Voyager
Joined: 19 Oct 2005
Posts: 99
Location: Israel
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Okay fellows - problem is solved.
As os is Win2003R2, there is parameter reegarding TCP stacks...
It was enabled, but with that specific NIC, should have been disabled.
Params to change are:
EnableTCPChimney (was 1. After change: 0)
EnableRSS (was 1. After change: 0)
EnableTCPA (was 1. After change: 0)
Then - a reboot.
Works great, no errors.
Problematic NIC was
Hewlett-Packard NC373i Multifunction Gigabit Server Adapter
and could also be
Broadcom NetXtreme II
So - Microsoft's post:
http://support.microsoft.com/kb/942861/en-us
For future use...
Thanks alot for your help.
Eli. |
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