[cisco-voip] Upgrading firmware on 7961 remotly

Tue Aug 15 22:06:31 EDT 2006

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

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  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

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  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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