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| belchman |
 Posted: Mon Aug 18, 2008 5:05 am Post subject: Version 7 Issue? |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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We recently upgraded a 64-bit Linux SUSE node from 32-bit MQ server v 6.0.2.2 to 64-bit MQ server v.7.0.
Now the firewall admins here are insinuating that MQ has the IP "do not fragment" flag turned on and as such is causing our current issue with a B2B partner over VPN.
I suspect that it is possible that IBM has a bug in which they left the "do not fragment" flag on in development code.
I believe that the B2B partner is MQ v6 for Windows.
Has anyone else encountered any issues where sender/receivers over VPN encountered issues after migrating to v7 server?
Thank You!
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| belchman |
| Posted: Mon Aug 18, 2008 5:58 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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Bueller? Bueller? Anyone!? 
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| fjb_saper |
| Posted: Mon Aug 18, 2008 1:19 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| belchman wrote: |
| Bueller? Bueller? Anyone!? |
Check out which compatibility mode MQ V7 is running in. 
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MQ & Broker admin |
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| belchman |
| Posted: Tue Aug 19, 2008 3:59 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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fjb_saper,
I searched to the end of the earth and finally found something about compatibility mode. It is in the intercommunication guide. The sender channel that is "sending over vpn" has a value of "COMPATIBILITY" for the MQPROP_COMPATIBILITY property.
Is this what you are asking?
I do not see such a property on the receiver so I assume forward compatibility is not an issue, only backward.
It sounds as if I have compatibility set properly? You agree?
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| fjb_saper |
| Posted: Tue Aug 19, 2008 5:36 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Check the V7 manuals. Especially where the RFH header is concerned with pub/sub etc..,. you need to set the compatibility mode to the right value. I would also look for it under the qmgr attributes.
Enjoy
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| ranganathan |
| Posted: Mon Aug 25, 2008 6:43 am Post subject: |
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Centurion
Joined: 03 Jul 2008
Posts: 104
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Has this anything to do with the IP version (IPv6 or IPv4) compatibility.. ??? Please clarify for newbie's like me...  |
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| belchman |
| Posted: Tue Aug 26, 2008 3:32 am Post subject: |
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Partisan
Joined: 31 Mar 2006
Posts: 386
Location: Ohio, USA
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I am quite sure that it is not IPV4 v/s IPV6 issue. We still have not determined what the issue is.
We contacted IBM via ESR and they insist it is not an MQ issue.
The network team will be opening a ticket with CISCO to see if they see an issue.
We still have not ruled an issue on the Linux SUSE virtual host.
I will post root cause here when we know what it is.
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