[cisco-voip] Jabber Bulk Provisioning and CSCur73925

[Anthony Holloway]

Wow!  I had no idea.  Thanks for sharing.

I'm not sure I would have hit this myself for two reasons:

1) I typically don't see a lot of mobile device adoption in my customer base
2) I typically don't see people stressing the limits of their CUCM device
limits.  I deal with a lot of BE6K size deployments, but with endpoints in
the low hundreds.



On Wed, May 27, 2020 at 7:17 AM Pawlowski, Adam <ajp26 at buffalo.edu> wrote:

> Hey all,
>
>
>
> I ran into this one late last night so I wanted to share.
>
>
>
> https://bst.cloudapps.cisco.com/bugsearch/bug/CSCur73925
>
>
>
> This bug says : “ All jabber mobile devices(BOT/TCT) are created
> statically at the time of system start up, so they are counted toward Max
> Registered Device limit. Same as gateway configuration.
>
> This is confusing to customers because it does not line up with what they
> see as registered devices. “
>
>
>
> Notable here is “System Startup”. I changed cert chains for the AddTrust
> root expiry and restarted the CM service which triggered this. CM nodes
> with 5000 max registrations suddenly had 0 devices registered per RTMT, no
> alarm, and nothing would register. Jabber log shows a 503 Service
> Unavailable to the REGISTER with:
>
>
>
> Server: Cisco-CUCM11.5
>
> Retry-After: 35
>
> Date: Wed, 27 May 2020 02:50:10 GMT
>
> Warning: 399 sub1234 "Max Configured Devices Registered"
>
>
>
> I had to increase the max registrations to get anything to register and
> come on board. I don’t know if this is in the documentation, and the bug
> shows a couple dozen cases so I’m not the first to hit this.
>
>
>
> The trick is, I bulk provision via AXL for my users, and had recently done
> this to get BOT/TCT up for COVID-19 prep. I wedged 5053 mobile devices in
> each pool that went to these subs which was just over the limit, but,
> nothing happened until CM was restarted. If the server had restarted the
> same thing would happen I would imagine. Since the AXL insert doesn’t
> trigger this, and I believe quick user/phone add also uses AXL, there’s a
> chance you could have this waiting to bite you as well.
>
>
>
> Happy ….. Wednesday?
>
>
>
> Regards
>
>
>
> Adam Pawlowski
>
> SUNY Buffalo
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