[cisco-voip] phones getting IP from data VLAN

[Curt Shaffer]

Actually despite all that was mentioned I think this was it. I did a quick
show on all mac addresses, put the mac's from the servers (2 DHCP servers
for data) in the data VLAN only, rebooted the phones and all looks well.
This is very interesting seeing that I had the same config (i.e. switchport
voice VLAN 20) on all of the ports. But in any case it looks good now. And
due to information from another member I have removed trunk settings as
well. This did not cure the issue like the removal of the servers from the
switchport voice vlan but seems to make a cleaner config.

Thanks to all for your help!

Curt

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Patrick Mowry
Sent: Saturday, November 24, 2007 6:20 PM
To: cisco-voip at puck.nether.net; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] phones getting IP from data VLAN

I'm being to lazy to read the whole thread, but is your Data Vlan getting
DHCP from a Windows 2003 or later server?  I just did an install for a
school board where half way through they migrated there DHCP service to new
servers and the situation you described started.  We had to make sure the
switchport the server was attached to was access mode only and did not have
a voice vlan configured.  Initially all copper ports were configured for
phones. Not all the phones had the problem.  About 1/3rd of them worked.

----------------------------------------------------------------------

Message: 1
Date: Sat, 24 Nov 2007 15:30:41 -0500
From: "Lelio Fulgenzi" <lelio at uoguelph.ca>
Subject: Re: [cisco-voip] phones getting IP from data VLAN
To: "Curt Shaffer" <cshaffer at gmail.com>, <cisco-voip at puck.nether.net>
Message-ID: <000f01c82ed8$e247f780$6601a8c0 at pdp11>
Content-Type: text/plain; charset="iso-8859-1"

no - add the voice vlan to the port as if it were the data vlan, plug in the
phone, let it do it's thing, then you can resort back to voice/data vlan
config.

or rather than changing ports all over the switch, just bring the phones to
a depot with the right config, let the phones upgrade, then redeploy.

your choice.

  ----- Original Message ----- 
  From: Curt Shaffer 
  To: 'Lelio Fulgenzi' ; cisco-voip at puck.nether.net 
  Sent: Saturday, November 24, 2007 3:20 PM
  Subject: RE: [cisco-voip] phones getting IP from data VLAN


  Yes they are right out of the box. When you are saying put them directly
into the voice vlan you mean only adding switch port voice vlan xx on the
switch port only?

   

  From: Lelio Fulgenzi [mailto:lelio at uoguelph.ca] 
  Sent: Saturday, November 24, 2007 2:53 PM
  To: Curt Shaffer; cisco-voip at puck.nether.net
  Subject: Re: [cisco-voip] phones getting IP from data VLAN

   

  Are these newly deployed phones? There was (and still is likely) an issue
with phones out of the box that need to be put on the voice vlan directly in
order to get the ball rolling. People have said the TAC told them the same
thing.

   

  I ran into this and once the initial upgrade happened, things were fine.

   

    ----- Original Message ----- 

    From: Curt Shaffer 

    To: cisco-voip at puck.nether.net 

    Sent: Saturday, November 24, 2007 2:46 PM

    Subject: [cisco-voip] phones getting IP from data VLAN

     

    I have a series of phones on the network that seem to keep getting an IP
from the data VLAN DHCP server. All of my switch ports are configured the
same. It's just some work and some don't. I have searched docs and the web
about this and found that there are some issues with older firmware but the
thing is that I have phones that did this at first and work fine now and
some phones worked fine at first and now do this. It's really quite odd. Has
anyone seen such an issue or got any advice? I'm not onsite so I can't
easily span the port and grab a capture today. DCHP is coming from the CME
router just FYI.

     

    Here are the specs:
    Phone models:
    7940 and 7960
    Version :
   P0030301MFG2
    Switch IOS (x2):
    Cisco IOS Software, C3560 Software (C3560-IPBASE-M), Version
12.2(35)SE5, RELEASE SOFTWARE (fc1)
    Router IOS:
    Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version
12.4(15)T1,RELEASE SOFTWARE (fc2)


    Thanks

     

    Curt


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