Upgrading switch IOS error

Bootyhunter

Whilst trying to upgrade the IOS on my switch I receive a..

%Error opening tftp://141.101.98.26/c2950-i6q4l2-mz.121-22.EA14.bin (Socket error)

message does anybody know what I'm doing wrong?

effekted

While doing some labbing I had a terrible time upgrading my IOS using TFTPD32. Initial 3 quests/attempts would time out in the application, while the 4th would start transferring bytes but in the CLI it would be !00000....... before erroring out.

I downloaded WinAgent TFTP and it too would error out on the initial packets but would work and not time out in the switch.

Talked to a few of my networking friends (CCIE's) and 1 of them uses TFTPD32 w/o issues, while the other prefers WinAgent TFTP. Make sure the box you're running the TFTP server on doesn't have firewall enabled, etc.

jmasterj206

Agreed. Most likely a firewall issue on the TFTP server.

theodoxa

I had a problem where the transfer would go well for a while and then would have a lot of periods (lost/bad packets) instead of exclamation marks (good packets). I found that even though the switch asked if I wanted to erase the flash before I started that manually erasing the flash first allowed the upgrade to work. Though, this is risky since erasing the flash will leave you without an IOS should the upgrade fail.

Bootyhunter

Thanks for your replies, I'll give it another go later...