[cisco-voip] Host not found on phones

[Ryan Ratliff]

If you can't figure out where the phone is getting the DNS name from  
then by configuring a DNS server you can use the queries to backtrack  
the name.

Honestly though with CUCM 6 just look at the directories URLs on the  
phone's config page.  If they don't match those in Enterprise  
Parameters (also check phone's CCMAdmin page) then reset the phone and  
see if they change.  If they don't change at that point either the  
phone's tftp config is messed up or the phone isn't getting the config.

-Ryan

On Sep 10, 2009, at 4:56 PM, voice noob wrote:

I will try that, why will I need a DNS server if I am just using IP  
address and not hostname ?

On Thu, Sep 10, 2009 at 9:07 PM, Wes Sisk <wsisk at cisco.com> wrote:
A DNS name is there somewhere.
the config file is a good place to look. use windows command line TFTP  
client to download phone config file (SEP<mac>.cnf.xml) and review.

after that get a packet capture showing the DNS attempt:
1. make sure phone is configured with DNS server
2. start packet capture from span port or back of phone
3. reset phone
4. once phone back up press services button
5. stop packet capture and look for DNS queries.

/Wes


On Thursday, September 10, 2009 3:52:50 PM , voice noob <ciscovoicenoob at googlemail.com 
 > wrote:
> Using CUCM 6.1.3 and 7941 phone also when I check the url on the  
> phone its showing the IP address
>
> On Thu, Sep 10, 2009 at 7:52 PM, Tanner Ezell  
> <tanner.ezell at gmail.com> wrote:
> Verify everywhere that you have no domain names being used (try  
> grabbing the config via tftp to check).
>
> On Thu, Sep 10, 2009 at 10:41 AM, voice noob <ciscovoicenoob at googlemail.com 
> > wrote:
> I a getting host not found on the phones when I click on Service or  
> want to look at the directory. I have removed DNS so the CUCM is  
> using IP address as the name also I have changed the enterprise  
> setting to use IP address as well so all URL are configured as IP,  
> the phones also have the URL as the IP address check I check on the  
> phone. I have have removed any domain name from the DHCP. But I am  
> still getting Host not found cant think what the problem could I am  
> sure it must be a simple fix.
>
> Thanks
>
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