[cisco-voip] Gatekeeper H.225 Trunk

[Jason Burns]

Steve,

Your configuration is correct, and it's the way I'd recommend doing it. With
only a single server in the CMG you lose redundancy.

If you do

show gatekeeper endpoints

you can see the port that the CCM uses to register that GK Trunk.  For each
cluster you should see three devices with three different ports. It sounds
like you see that just fine. If you send an H225 Setup to any of those ports
then the call should work (regardless of the source of the H.225 setup).

Can you try resetting the GK Trunk? Maybe disable and enable the GK. The
last resort would be to restart the CCM service on the three nodes in
question.

When you add the Trunks to CCM there should be an H225 process started on
each of the appropriate nodes that handles the inbound call. It sounds like
for some reason this isn't working on your servers. This could be broken for
a number of reasons, but the resetting and restarting  should take care of
it.

If not, then you might need to dig deeper into the traces or open a TAC
case.

-Jason

On Tue, Apr 28, 2009 at 5:14 PM, <steve.siltman at assurant.com> wrote:

>
> You've all been very helpful in the past and I'm thinking this should be
> another fun one to answer.
>
> Three clusters consisting of 8, 8 and 6 servers.  They all use the same
> pair of gatekeepers.  I created a gatekeeper device pool with a CMG
> containing 3 servers from each cluster.  I assigned this device pool to the
> gatekeeper trunk that I built to each of the gatekeepers.  This was fun and
> exciting as I saw each of the 3 servers in the CMG register to each of the
> gatekeepers.  Now I have 9 registered endpoints on each of the gatekeepers.
>
> My problem is that the calls work around 33% of the time when routing
> between clusters.  I took a few traces and found that only when a request
> hits the publisher server does it succeed in connecting.  When it hits the
> other 2 registered endpoints, the call fails(reorder tone).
>
> My questions are:
>
> Should I rethink my design and register 1 server to the gatekeepers from
> each cluster?
> What am I missing that would make the calls fail when hitting the
> subsequent nodes registered endpoints?
>
> My guess is that I'm not going to like the answer because its right in
> front of my nose. :)
>
> Thanks,
>
> Steve Siltman
> Assurant Corporate Technology
> Network Engineer - Cisco CCVP
> Work: 651-361-4752
> Cell: 651-336-5563
> steve.siltman at assurant.com
>
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