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| LOCLADDR parameter |
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| sanvij |
 Posted: Mon Apr 05, 2004 5:37 pm Post subject: LOCLADDR parameter |
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Novice
Joined: 21 Mar 2003
Posts: 24
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Mqver is 5.3 with CSD05
Let me first explain the scenario:
1) We have 2 Sun solaris servers both having repos qmgr
2) We want to migrate the qmgr`s to a Sun cluster (HA).
3) We successfully migrated the 1 repos qmgr to a HA m/c and the MQ Cluster is fully functional
4) Let us consired the IP addresses as: Primary IP is 1, Seconday IP is 2, and Logical IP is 3
Objective:
1) We want the clussndr to have the IP of the logical m/c (in our case IP should be 3) as the local communication address for the channel .
Problem:
Although we defined the LOCLADDR parameter(a new feature in MQ5.3) to have IP 3 we dont see the parameter taking into effect .(The clussndr still treates the local IP (IP 1) as the communication IP. this was found by doing netstat -an)
IBM`s suggestion:
Opened a call with IBM they suggest to drop the clussndr channel and recreate it. But the IBM doc does not suggest so and please see the below NOTE
NOTE: The LOCLADDR parameter works perfectly fine when used on a sender channel from the same qmgr communicating to the qmgr outside the cluster
Now my questions:
1) Any one has faced similar problems?
2) Even after the restart of the qmgr the parameter did not take effect. When the qmgr can recognize on a sender channel why does not recoginze it on a clussndr channel? Is it do the cache on the cluster repos?
_________________
Sanvij
IBM Certified MQSeries Specialist
IBM Certified WebSphere MQ Solution Designer |
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| JasonE |
| Posted: Tue Apr 06, 2004 4:12 am Post subject: |
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Grand Master
Joined: 03 Nov 2003
Posts: 1220
Location: Hursley
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http://www-1.ibm.com/support/docview.wss?rs=0&q1=IY49334&uid=swg1IY49334&loc=en_GB&cs=utf-8&lang=
Or similar text documented internally
| Quote: |
The channel attribute LOCLADDR has been introduced at v5.3 in order to enable an outbound (TCP) channel to use a particular IP Address, port or port range. This is useful if the customer has more than one network card and wants a channel to use a specific one for outbound communications.
Customers need to be aware that if they add a value to the LOCLADDR field of a manually defined CLUSSDR channel, that this value will be over-written with the values in the repositories CLUSRCVR channel once communication has been established with the repository queue manager.
If a cluster wants to use LOCLADDR to get their outbound communication channels to bind to a specific IP Address, they will need to write a Channel Auto-Definition Exit in order to force the LOCLADDR value into any of their automatically defined CLUSSDR channels, as well as specifying it in the manually defined CLUSSDR channel.
It should be noted that putting an IP Address in the LOCLADDR field of a CLUSRCVR channel is not a valid thing to do unless all the queue managers reside on the same machine. This is because ANY queue manager that attempts to connect to a queue manager with an IP Address in the LOCLADDR field of its CLUSRCVR will have these values propagated to their auto-defined CLUSSDR channels.
It would however be valid to put a port number or port range in the LOCLADDR of a CLUSRCVR channel, if you wanted all the queue managers in a cluster to use a specific port or range of ports for all their outbound communications.
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I make no guarantees to its accuracy though  |
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| sanvij |
| Posted: Tue Apr 06, 2004 2:40 pm Post subject: |
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Novice
Joined: 21 Mar 2003
Posts: 24
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Jason,
Thanks for the reply.
So even recreating the CLUSSDR channel will not help and the only work around is using a Channel Auto-Definition Exit.
The link you provided mentions about a sample exit :568.prbnb. Is it available for reference?
_________________
Sanvij
IBM Certified MQSeries Specialist
IBM Certified WebSphere MQ Solution Designer |
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| JasonE |
| Posted: Mon Apr 26, 2004 4:03 am Post subject: |
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Grand Master
Joined: 03 Nov 2003
Posts: 1220
Location: Hursley
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Sorry for the delayed response... Been out for 3 weeks on holiday
Sorry - the prb link is the database holding these articles, so is internal only. Drop me a pm with your email addr and I'll send you the bits you are after. |
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