[cisco-voip] Phone Restart on Subscriber add

Mon Apr 27 16:07:23 EDT 2015

Despite the phone resets,  the customer’s outsourced security group panicked when they saw a couple thousand packets at the TFTP servers when a sub got added to 10.5 cluster. Guess they thought a DDOS attack was going down or something.  Who knows what a 3rd party security company with IDS sensors would think….needless to say it created a small ruckus.

From: Tommy Schlotterer [mailto:tschlotterer at netechcorp.com]
Sent: Monday, April 27, 2015 4:02 PM
To: Ryan Huff; Jason Aarons (AM); bmeade90 at vt.edu
Cc: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Phone Restart on Subscriber add

It’s not a full reboot, looks just like an apply config, just enough for users to complain.

Tommy

Tommy Schlotterer | Systems Engineer
CCNA, CCNA Voice
48325 Alpha Dr. Ste. 150
Wixom, MI 48393
p 248.468.0710
e tschlotterer at netechcorp.com<mailto:tschlotterer at netechcorp.com>
w netechcorp.com<http://netechcorp.com/>
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From: Ryan Huff [mailto:ryanhuff at outlook.com]
Sent: Monday, April 27, 2015 3:59 PM
To: Jason Aarons, (AM); bmeade90 at vt.edu<mailto:bmeade90 at vt.edu>; Tommy Schlotterer
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Phone Restart on Subscriber add

I'll have to lab this up and see what I am missing; last week I added a 9.1.x cluster node and I didnt get any phone bounces during the install.

Strange.

Thanks,

Ryan

-------- Original Message --------
From: "Jason Aarons (AM)" <jason.aarons at dimensiondata.com<mailto:jason.aarons at dimensiondata.com>>
Sent: Monday, April 27, 2015 02:54 PM
To: Brian Meade <bmeade90 at vt.edu<mailto:bmeade90 at vt.edu>>,Tommy Schlotterer <tschlotterer at netechcorp.com<mailto:tschlotterer at netechcorp.com>>
Subject: Re: [cisco-voip] Phone Restart on Subscriber add
CC: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
So building the subscriber resets all phones in cluster to download updated Trust List?

It has nothing to do with adding subscriber to the CallManager group the phone is using?

I’ve heard of this issue but wasn’t clear (or forgot) about the specifics.

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Brian Meade
Sent: Monday, April 27, 2015 3:50 PM
To: Tommy Schlotterer
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Phone Restart on Subscriber add

There's an option during the install to just check connectivity and then wait for the full install.  That's as far as you can go without resetting all the phones unfortunately.

On Mon, Apr 27, 2015 at 3:31 PM, Tommy Schlotterer <tschlotterer at netechcorp.com<mailto:tschlotterer at netechcorp.com>> wrote:
Yes, I do understand that. I just need to know when in the install, The customer doesn’t want a 4 hour maintenance window to install a new node.

Tommy

Tommy Schlotterer | Systems Engineer
CCNA, CCNA Voice
48325 Alpha Dr. Ste. 150
Wixom, MI 48393
p 248.468.0710<tel:248.468.0710>
e tschlotterer at netechcorp.com<mailto:tschlotterer at netechcorp.com>
w netechcorp.com<http://netechcorp.com/>
 [cid:DE00F175-A6C9-45A6-B3AC-D658551F1586]
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From: bmeade90 at gmail.com<mailto:bmeade90 at gmail.com> [mailto:bmeade90 at gmail.com<mailto:bmeade90 at gmail.com>] On Behalf Of Brian Meade
Sent: Monday, April 27, 2015 3:28 PM
To: Tommy Schlotterer
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Phone Restart on Subscriber add

It happens when the cluster becomes aware of the new nodes certificates.  It adds a new TVS entry to the ITL of each node and resets the phones to ensure they download the new ITL before any other ITL changes are made.  This is to prevent too many changes happening the ITLs at once making the phones not trust the new ITLs.

On Mon, Apr 27, 2015 at 3:07 PM, Tommy Schlotterer <tschlotterer at netechcorp.com<mailto:tschlotterer at netechcorp.com>> wrote:
All,

I have a customer that is very picky on when phones will reboot when adding a new subscriber to a CUCM cluster.

Does anyone know in what point the phones reboot? Right after the conntivity vierfication? Right when the new node is done installing?

Thanks
Tommy

Tommy Schlotterer | Systems Engineer
CCNA, CCNA Voice
48325 Alpha Dr. Ste. 150
Wixom, MI 48393
p 248.468.0710<tel:248.468.0710>
e tschlotterer at netechcorp.com<mailto:tschlotterer at netechcorp.com>
w netechcorp.com<http://netechcorp.com/>
 [cid:DE00F175-A6C9-45A6-B3AC-D658551F1586]
[cid:62EB95BF-20B4-4A1B-98FE-9E042594730A]<https://www.linkedin.com/company/75843?trk=tyah&trkInfo=tarId%3A1397760375508%2Ctas%3Anetech%2Cidx%3A3-1-5> [cid:47C21B6C-578D-4D72-BFF4-8A482CE7A978] <https://www.facebook.com/NetechCorporation>  [cid:A362BD4D-9EC8-47CC-96A8-8A17AF38C15C] <https://twitter.com/netechcorp>  [cid:F52A69B8-DA49-4CD7-91E9-C057917D90C2] <https://www.youtube.com/user/NetechCorporation>

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