[cisco-voip] Upgrading firmware on 7961 remotly

Tue Aug 15 21:36:15 EDT 2006

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> <mailto: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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