IOS

[kammodo]

Does anyone know if you can upgrade a cisco routers IOS via a telnet session?

[BosonMichael]

Are you asking if you can copy the files over Telnet, or are you asking whether you can copy the files via TFTP by issuing the command over a Telnet session?

[kammodo]

Originally Posted by BosonMichael

Are you asking if you can copy the files over Telnet, or are you asking whether you can copy the files via TFTP by issuing the command over a Telnet session?

The first one. If your having to upgrade the IOS on a large network or if the routers are a pain to get to, would it be possable to telnet into each one and upgrade remotely, or would it wipe the ip address upon re-boot and end the session? I know it is best to do it manually, but still like to know if it is possable?

[BosonMichael]

Originally Posted by kammodo

The first one. If your having to upgrade the IOS on a large network or if the routers are a pain to get to, would it be possable to telnet into each one and upgrade remotely, or would it wipe the ip address upon re-boot and end the session? I know it is best to do it manually, but still like to know if it is possable?

Unless there's some way I don't know about, then no, that's not possible.

If the routers are a pain to get to, you can still Telnet into the router and then copy the image using TFTP. And... pray it comes up on a reboot.

[kammodo]

Yeah sounds too risky. Believe it or not I wasnt beig super lazy, just wanted to know if it was possible. Better start upgrading those routers now I suppose (After NCIS of course!)

Thanks for the insight

[phatboy]

you wont loose the IP or settings when you upgrade the IOS, as they are in different memory