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Cant copy from TFTP

Marty Harrison
Beginner
Beginner

I have a 3650 which I am trying to upgrade from a TFTP server on the same LAN. The tftp is used to automatically back up the config using archive commands so copying from Cisco to TFTP works all the time.

 

When I try to copy from TFTP to the Cisco I get a timeout. I can see the activity on the TFTPD log but the connection drops. I have seen similar issues when the MTU is set wrong. This box has MTU 1508 and so does the TFTP server.

 

I have the "ip tftp source..." set correctly. 

 

There is no windows firewall at all and no traffic restrictions. I have tried copying the config to the TFTP server (which works) and back again (which fails). 

 

Any ideas?

2 Replies 2

Georg Pauwen
VIP Master VIP Master
VIP Master

Hello,

 

try and increase the TFTP blocksize:

 

3650(config)#ip tftp blocksize 8192

paul driver
VIP Expert VIP Expert
VIP Expert

Hello


@Marty Harrison wrote:

There is no windows firewall at all and no traffic restrictions. I have tried copying the config to the TFTP server (which works) and back again (which fails). 


Have you enable tftp server and specified the source location on the other device to be the server so it works the other way around?


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Kind Regards
Paul
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