[c-nsp] Slow IOS transfers on 2811

[Kristian Larsson]

On Thu, Jun 01, 2006 at 08:38:37AM -0600, John Neiberger wrote:
> I've got a brand new 2811 under my desk running 12.4(7) and I'm trying
> to load 12.4(8) onto it. It has 64 MB of ATA compact flash. I'm
> noticing that file transfers to the router are REALLY slow, and the
> TFTP server is on the same LAN as the router. I've tried FTP and I
> also tried a different TFTP server (my own PC) and I get the same
> result: painfully slow file transfers. I'd grow a beard in the time it
> takes to transfer an IOS image this big, when it should only take a
> few moments on a LAN.
> 
> The FastEthernet interface is autonegotiating to 100/full. I have no
> reason to suspect a connectivity problem because the router and my PC
> are connected to the same little switch under my desk and my PC has no
> problems at all.
> 
> The router is running a blank config except for the IP address on the
> FastEthernet interface. The CPU is idling at 0%, of course, because it
> isn't doing anything.
> 
> I have no idea where to begin troubleshooting this. Is there something
> on a router that could potentially cause file transfers to go this
> slow? What should I be looking at?
Sounds like duplex mismatch. Sometimes cisco have
trouble negotiating duplex.
Check 'show interface FastEthernet 0/0" or
whichever interface you have connected to the
switch and look for collisions...

  Kristian.