Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

unable to Upgrde IOS


I have tried to upgrade IOS of Cisco 3560 switch but it's giving error..

For upgradation what synatx I need to follow..

I am following the below syntax and getting error.

AGL-SW-06#copy tftp: flash:

Address or name of remote host []?

Source filename [c3560-ipbasek9-mz.122-25.SEE4]? c3560-ipbasek9-mz.122-25.SEE4.bin

Destination filename [c3560-ipbasek9-mz.122-25.SEE4.bin]?

Accessing tftp://

%Error opening tftp:// (Timed out)


Pleaase guide to resolve this issue..


Re: unable to Upgrde IOS

it sound there is problem in communicating with the tftp server

make sure that u have put the right link and check ur defual directoy on the tftp and check that no firewall on the pc block the traffic

New Member

Re: unable to Upgrde IOS

This problem can accoured in following situatin:

1.The tftp server is unreachable.

2.Dont run tftp server software.

3.The tftp port in the firewall is closed.

4. The tftp server configuration in transmit only and you must change to transmit and recive.

5.The Windows Firewall in on and tftp port is closed.

New Member

Re: unable to Upgrde IOS


one thing I want to share in this matter..

The problem is happening during upload only..I am not getting any error when I have taken the IOS or running-config backup.

Answer of your question...

1)TFTP server is reachable from device (pinging from switch)

2)TFTF server is running

3)Windows firewall is closed

4)Please let me know how to check the setting. I am using Cisco TFTP server (Version 1.1) and I didn't get any option to check the same.

5)Windows firewall is closed

New Member

Re: unable to Upgrde IOS


I think your file have a sub directory or you type incorrect path.