[cisco-voip] [cisco-VoIP] Odd CUCM IP Phone Registration behavior during Migration

[Kenneth Hayes]

Have you checked to see any ITL or CTL files on the phone?
Sent from my iPhone

On Jul 27, 2013, at 7:05 PM, Mike Lydick <mike.lydick at gmail.com> wrote:

What does the phone log say? What are the phone load version's?  Also a
packet capture would help diagnostic to see if the phone is get replys from
the infrastructure (cdp dhcp sccp).
On Jul 27, 2013 7:28 PM, "Dana Tong" <Dana_Tong at bridgepoint.com.au> wrote:

>  Yes. Tried that also and it failed.
>
>  I checked the OS admin guide or the release notes late last night and it
> says - Caution. If you go to an unrestricted release you will not be able
> to go back via upgrade or a fresh install. Does this mean that there's
> something that is copied to the phone firmware that stops it from ever
> going back to a restricted release even on new hardware?
>
>
>  Regards,
> Dana Tong
>
> ----- Reply message -----
> From: "Travis L. Dennis" <tdennis at DataSourcePro.com>
> To: "Dana Tong" <Dana_Tong at bridgepoint.com.au>, "
> cisco-voip at puck.nether.net" <cisco-voip at puck.nether.net>
> Subject: [cisco-VoIP] Odd CUCM IP Phone Registration behavior during
> Migration
> Date: Sun, Jul 28, 2013 5:09 AM
>
>  Have you tried resetting one of the problematic 7940 pones to factory
> default and let it try to register?
>
>
>
> *From:* cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] *On Behalf
> Of *Dana Tong
> *Sent:* Saturday, July 27, 2013 10:37 AM
> *To:* cisco-voip at puck.nether.net (cisco-voip at puck.nether.net)
> *Subject:* [cisco-voip] Odd CUCM IP Phone Registration behaviour during
> Migration
>
>
>
> Good morning all,
>
>
>
> Weird one tonight.
>
>
>
> Customer has a CUCM version 7.1(5) with approx. 900 handsets of 7912’s,
> 7940’s etc.
>
>
>
> So I built up a new CUCM version 9.1(1) on new UCS hardware (vmware) and
> everything looks fine. I cleaned up all the data an implemented some of the
> intelligent call routing features in newer CUCM etc. Tested with some brand
> new 7942’s out of the box and all is good.
>
>
>
> Tonight I get onsite to perform the migration. I start with the first
> site. ~110 phones. Update the DHCP option 150 and reset the phones.
>
>
>
> Now about 40 of the ~110 phones come across and register to the new CUCM
> ok. This leaves some 70 phones reporting configuring IP. The DHCP is on the
> router, and the router connected to the LAN via a dot1q trunk.
>
> The registered phones are all of the 7912’s and some 7940’s.
>
>
>
> Two of the phones close by are 7940’s. One is registered and one is not.
> They both have the same firmware. They are both on the same access switch.
> The unregistered phone does not have an IP address. However the router’s
> ARP and DHCP has an IP address in its database. I cleared the ARP, and
> cleared the DHCP bindings. Restart the phone. I see the DHCP request in the
> debugs and an address get assigned but the phone still doesn’t get an IP.
>
>
>
> So I manually set an IP address on the phone. It still won’t register. I
> set a continuous ping to the phone and I get maybe 2% ping response. With
> some response times up in the 190ms range. Weird. This is all LAN based.
> Check spanning tree and that’s ok. The TAC have investigated and they are
> stumped. They ask me to log another fault for the switching guys. A PC
> behind the phone in the voice VLAN also has perfect pings to the new CUCM.
> So it seems phone related.
>
>
>
> Anyways so I do some more troubleshooting. Roll back the DHCP option 150
> and reset all the phones. They all re-register with the old cluster no
> problems.
>
>
>
> I configure a new VLAN on the switches and new sub-interface on the
> router. Configure a new DHCP scope for the new range and configure this
> phone to use that new VLAN. At this point I haven’t added the new subnet to
> BGP to this subnet cannot see the Data Centre VLANs.
>
> The phone comes up in the test VLAN and gets an IP address ok. I can ping
> the phone and have no loss.
>
> I configure the BGP routing and now the new subnet is advertised into the
> network and I can reach the CUCM.
>
> Immediately, the phone starts dropping pings and is showing the same
> sporadic response and packet loss.
>
> I remove the subnet from BGP and now the phone is 100% responsive again.
> What the???
>
>
>
> So it seems there is an issue when the phone is trying to register to the
> new CUCM. I’ve just checked the old cluster and noticed that this system is
> running 7.1(5) UNRESTRICTED. So the last upgrade which was done for this
> customer, it seems someone had installed the UNRESTRICTED version. Is this
> affecting my migration? The new cluster is a fresh build of UCM 9.1
> straight on to new UCS hardware. So it’s a standard restricted ISO.
>
> I know that once you go UNRESTRICTED you cannot go back. However this was
> not an upgrade or backup/ restore. Remember this is a fresh build.
>
>
>
> Anyways I’m stumped. Can you guys think of anything??? It seems to be
> related the 7940 series phones. We tried another site and all of the 7912’s
> migrated fine but the 7940’s didn’t. But then again there were “some”
> 7940’s in the HQ site which did work.
>
>
>
> Thanks in advance.
>
>
> Cheers
>
> Dana
>
>
>
>
>
>
>
>
>
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