[cisco-voip] TFTP error when phone resets

[Ruben Montes (Europe)]

Hello,
 
yes, we have the 'lease' in the official DHCP. The strange thing here is it says the address of the TFTP server is 0.0.0.0. Does it make sense? 
There is no secondary TFTP server...
 
Thanks in advance,
 
Ruben

________________________________

De: Jonathan Charles [mailto:jonvoip at gmail.com]
Enviado el: lun 18/12/2006 17:45
Para: Ruben Montes (Europe)
CC: Wes Sisk; cisco-voip at puck.nether.net
Asunto: Re: [cisco-voip] TFTP error when phone resets


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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