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| sdiz |
 Posted: Thu Dec 01, 2011 12:24 am Post subject: Mixing LU62 and TCP in cluster? |
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Newbie
Joined: 17 Oct 2011
Posts: 4
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Hi,
Is it possible to mix LU62-only node and TCP-only node in the same cluster?
The FR will support both transport type .
Can they communicate with each other? |
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| bruce2359 |
| Posted: Thu Dec 01, 2011 3:51 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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What does the IBM documentation have to say about this?
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| bruce2359 |
| Posted: Thu Dec 01, 2011 5:31 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Moved to Clustering forum.
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| Vitor |
| Posted: Thu Dec 01, 2011 5:47 am Post subject: Re: Mixing LU62 and TCP in cluster? |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| sdiz wrote: |
| Can they communicate with each other? |
Queue managers communicate by using WMQ channels. They don't know what protocol the channel is using, and don't care.
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Insanity is the best defence. |
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| bruce2359 |
| Posted: Thu Dec 01, 2011 5:54 am Post subject: Re: Mixing LU62 and TCP in cluster? |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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| sdiz wrote: |
Hi,
Is it possible to mix LU62-only node and TCP-only node in the same cluster?
The FR will support both transport type .
Can they communicate with each other? |
As I re-read the OP, you are asking if a qmgr that only supports tcp/ip can establish a channel to a qmgr that does NOT support tcp/ip.
Is this your question?
The Intercommunications documentation describes channel attributes that must match at both ends of a channel for the channel to successfully start.
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| sdiz |
| Posted: Thu Dec 01, 2011 7:04 pm Post subject: |
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Newbie
Joined: 17 Oct 2011
Posts: 4
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| Just want to confirm cluster won't do message relaying with multi hop. |
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| bruce2359 |
| Posted: Thu Dec 01, 2011 8:37 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Why do believe this to be the case?
Do you understand what channels are, and what they do?
Do you understand how messages are routed across mq networks?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| Vitor |
| Posted: Fri Dec 02, 2011 5:31 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| sdiz wrote: |
| Just want to confirm cluster won't do message relaying with multi hop. |
What has this got to do with your original post? That was talking about comminucation protocols?
You link queue managers together, in a cluster or not, with channels. These channels use protocols common to both hosting machines. This ends one part of the story.
You then group these queue managers into a topology of your choosing, based on your criteria. One such topology is a cluster. This has nothing to do with the underlying communications. This is basic WMQ.
Another very basic concept is that all the members of a WMQ cluster interconnect with all others and all message tranfer is direct. The location of an FR is irrelevant to this.
Re-read the clusters documentation, carefully. If you have a need to multi-hop clustered messages because of network (for some reason) then you should be thinking about overlapping the clusters.
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| mqjeff |
| Posted: Fri Dec 02, 2011 6:50 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| I do not believe that there is anything that stops a queue manager from defining two different CLUSRCVRs that use different network protocols, provided the queue manager is running on a machine that physically supports two different network protocols. |
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| Vitor |
| Posted: Fri Dec 02, 2011 6:54 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| mqjeff wrote: |
| I do not believe that there is anything that stops a queue manager from defining two different CLUSRCVRs that use different network protocols, provided the queue manager is running on a machine that physically supports two different network protocols. |
I don't believe that anything stops that either. I was just pointing out (given the OP talked about multi hop) that the clustered equivalent of a multi-hop is an overlap.
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| mqjeff |
| Posted: Fri Dec 02, 2011 7:00 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| Vitor wrote: |
| the clustered equivalent of a multi-hop is an overlap. |
I suppose it depends on what you exactly mean by "overlap".
But, yes, a cluster multi-hop is when qmgr A sends a message to qmgr B over cluster CLUSTER1. Qmgr B is a member of both CLUSTER1 and CLUSTER2. When the message arrives at QmgrB, qmgrB discovers that the destination for the message is actually a queue on qmgrC that belongs to CLUSTER2, and sends the message to qmgr C.
EDIT: My point about the ambiguity of "overlap" is that in the above, qmgr A *only* belongs to CLUSTER1 and qmgr C *only* belongs to CLUSTER2. |
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| bruce2359 |
| Posted: Fri Dec 02, 2011 7:15 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9486
Location: US: west coast, almost. Otherwise, enroute.
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Multi-hopping (how many p's?) is possible across (through) both cluster- and non-cluster qmgrs. Still not sure why the OP believes this is not the case.
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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