Why can't run crypto key generate rsa

[chicagotech]

I have switch 3548-XL with version 12.0(5.3)WC. When attempting to run crypto key genearte rsa, it doesn't work. Why?

IP200#conf t

Enter configuration commands, one per line.  End with CNTL/Z.

IP200(config)#hostname IP200

IP200(config)#ip domain-name chicagotech.net

IP200(config)#crypto key generate rsa             

                       ^

% Invalid input detected at '^' marker.                 

[Reza Sharifi]

Can you post sh ver?

In order to run SSH, you need an IOS image that contains "k9" in the name.

example:

c3560e-universalk9-mz.122-55.SE.bin

HTH

[Jon Marshall · Accepted solution]

SSH is not supported on these switches as they are too old i'm afraid.

Jon

[Marvin Rhoads · Accepted solution]

The 3548 was end of sales in July 2002 (reference).

They do not support ssh (only telnet for vty access) and thus do not have the capability to generate an RSA key.

[nesrin]

I just now faced the same issue and fixed it as following: update the image on boot then reload then try crypto command again.