[cisco-voip] Upgrading firmware on 7961 remotly

[Wes Sisk]

In 4.x you could use the alternate TFTP path so that TFTP will write  
out configuration files to an arbitrary SMB/CIFS file path.

In later versions of CM there is also centralized TFTP where all TFTP  
files are now available via http as well so a remote server can  
download the files - point your web browser (not IE though) to http:// 
<CM_TFTP_SERVER:6970/XMLDefault.cnf.xml

/Wes

On Aug 15, 2006, at 10:06 PM, Lelio Fulgenzi wrote:

While we are talking about TFTP, is there an easy way to use an  
external TFTP server? We have a campus DNS/DHCP appliance that is  
fully redundant and we'd like to offload some of this from the voice  
servers.

Is there a way to ensure that CallManager updates the config files on  
an external TFTP server?

----- Original Message -----
From: Jason Aarons (US)
To: cisco-voip at puck.nether.net
Sent: Tuesday, August 15, 2006 9:36 PM
Subject: Re: [cisco-voip] Upgrading firmware on 7961 remotly

I have this feature in computers now, one PC downloads a virus/worm  
from the net and passes it among friends.  Isn’t this how Cyberdyne  
from Rise of the Machines got started?  Are we building Skynet?  
Selsius? Skynet? Both started with a S…. <grin>



http://en.wikipedia.org/wiki/Cyberdyne_Systems_Corporation





From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip- 
bounces at puck.nether.net] On Behalf Of Matt Slaga (US)
Sent: Tuesday, August 15, 2006 4:13 PM
To: Wes Sisk; Craig M Staffin
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Upgrading firmware on 7961 remotly



In regards to your comment, “You will greatly benefit from an  
upcoming phone feature where 1 remote site phone downloads from TFTP  
server, then the phones pass the load among themselves.” ,,,where,  
when, how?  Any details?



Thanks!

Matt



From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip- 
bounces at puck.nether.net] On Behalf Of Wes Sisk
Sent: Tuesday, August 15, 2006 3:28 PM
To: Craig M Staffin
Cc: cisco-voip-bounces at puck.nether.net; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Upgrading firmware on 7961 remotly



Craig,

No nerd knobs that I am aware of.  If you are getting all the ACKs  
back then it sounds like the packet is getting corrupted in transit.   
I do not believe the phones validate the checksum on every packet,  
but only verifies the whole file reassembled.  Can you send me a  
packet capture of a phone at the remote location attempting to  
upgrade?  Or can you access a PC at the remote location and attempt  
to TFTP download the phone load from the TFTP server?  Check the  
md5sum of the downloaded file against the md5sum (http:// 
www.etree.org) of the original file.  If you are using a PIX at the  
remote site you can use the packet capture feature of it to remotely  
perform the packet capture.  I can reconstruct the payload from the  
packet capture and verify if it is corrupt in transit.

You will greatly benefit from an upcoming phone feature where 1  
remote site phone downloads from TFTP server, then the phones pass  
the load among themselves.

/Wes

Craig M Staffin wrote:


Router is definatly an option as I am part of the network group.   
However again this would mean that I or someone from my team would  
need to manage 350 different TFTP servers.  One across each site.  So  
not real scalable.

Wes maybe you know did cisco monkey with the  TFTP times on the  
phones.  The default for TFTP timeout is 1000ms however I have seen  
some people change this down to 200 or 300ms.

Craig



Robert Kulagowski <bob at smalltime.com>
Sent by: cisco-voip-bounces at puck.nether.net

08/14/2006 09:56 PM

To

cisco-voip at puck.nether.net

cc



Subject

Re: [cisco-voip] Upgrading firmware on 7961 remotly











 > Would love to however by the time we are done with our rollout we  
will
 > have about 350 sites across the globe so if we have to setup seperate
 > TFTP servers at each location that is  HUGE administration nightmare.

Well, you can always use the router as a tftp server; is that an option?
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