Last Friday the IOS in CIGESM in the IBM BladeCenter needs to be upgrade. CIGESM is a Cisco Intelligent Gigabit Ethernet Switch Module for IBM eServer BladeCenter (Part number: 13N2281). In Cisco web site I found a couple of the latest ISO for CIGESM. This time I wanted to try something new. I downloaded an ISO crypto tar file. A crypto ISO supports SSH connection. For a bin file, I can just copy the bin file from the tftp server to the switch. But now with a tar file, I need to do some research to see how to untar it in Cisco switch. After the research, I found that it is quite easy. Here is the fun.
“archive download” command’s usage can be found here.
It overwrote the old IOS file, and the HTML folder. The switch needs to be reloaded in order to reflect the new IOS since the old IOS has been loaded into the memory. After the reload, we need to put the domain name in it in order to generate the key for security connection.
SDC1BLAD2(config)#ip domain-name test.com
The name for the keys will be: SDC1BLAD2.test.com
SDC1BLAD2(config)#crypto key generate rsa
Choose the size of the key modulus in the range of 360 to 2048 for your General Purpose Keys. Choosing a key modulus greater than 512 may takea few minutes.
How many bits in the modulus :Generating RSA keys ...[OK]