[cisco-voip] TFTP error when phone resets

[Jonathan Charles]

Is their a lease for that device in the DHCP pool?

I ask only because it is possible it is picking up an option 150 (or 66)
from a different box that you aren't aware of (a rogue DHCP server, a switch
or router with a DHCP pool configured that is intercepting the DHCP request
and issuing an IP).

Easier than that, go to the phone and check the IP address of the DHCP
server it is using, check that scope. Also, is TFTP server 2 (and the
Alternate TFTP set to yes) enabled on the phone? If so, it may be getting an
IP address from the DHCP server and ignoring the option 150 settings with
its own overriding settings, and then failing (because the address is bogus)
and using the real option 150 address (when the manual address doesn't
respond).

Also, don't rule out the rogue DHCP server immediately. Generally, most
large networks have rogue DHCP servers (and non-rogue servers that have
rogue scopes on them). This is because Microsoft failed to integrate their
DHCP servers together so that they know about one another and can share
pools (IOW, the MS DHCP model does not prevent you from having overlapping
pools and assigning the same IP more than once... It is a feature apparently
(integrated, but only to a point, as they say).




Jonathan

On 12/18/06, Ruben Montes (Europe) <Ruben.Montes at eu.didata.com> wrote:
>
>  Hi,
>
> all the phones are DHCP configured. I've checked the DHCP scope options
> and the ip address of the TFTP server is correct (included in the CTL).
> Any idea why it tries to access a TFTP at the address 0.0.0.0?
>
> Thanks in advance,
>
> Ruben
>
> ------------------------------
> *De:* Wes Sisk [mailto:wsisk at cisco.com]
> *Enviado el:* vie 15/12/2006 20:01
> *Para:* Ruben Montes (Europe)
> *CC:* cisco-voip at puck.nether.net
> *Asunto:* Re: [cisco-voip] TFTP error when phone resets
>
> Looks like your phone obtained a CTL certificate which includes a list of
> authorized TFTP servers.  Now by either manual config or network resolution,
> the phone is being pointed to a TFTP server that is not included in the CTL
> file.
>
> /Wes
>
> Ruben Montes (Europe) wrote:
>
> Hello,
>
> I have this error every time I reset a phone:
>
>
>
> *Error: StationEventAlert - Station alert.*
>
> *TCP ProcessID: 9.100.129.1954*
>
> *Device Text: 34: Name=SEP0019E74DA3B2Load= 7.0(3.0S) TFTP NOT AUTHORIZED:
> 0.0.0.0*
>
> *Param1: 0*
>
> *Param2: 0*
>
> *App ID: Cisco CallManager*
>
> *Cluster ID: StandAloneCluster*
>
> *Node ID: MCS7825CTP01*
>
> *Explanation: Station device sent an alert to Cisco CallManager.*
>
> *Recommended Action: Ensure that the configuration for identified device
> is proper..*
>
>
>
> Anyway, the phone boots normally and we're not having any problem except
> this message...
>
> Regards,
>
>
>
> Ruben
>
> ------------------------------
>
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