Certifications Unleashed » show http://www.certhacker.com All you need to certify yourself Wed, 13 Apr 2011 08:58:02 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 How To See Which Version Of IOS Is Installed http://www.certhacker.com/cisco/how-to-see-which-version-of-ios-is-installed/ http://www.certhacker.com/cisco/how-to-see-which-version-of-ios-is-installed/#comments Tue, 15 Sep 2009 04:04:04 +0000 sanix http://www.certhacker.com/2009/09/how-to-see-which-version-of-ios-is-installed/ This is a fairly easy question but if you’re a newbie in Cisco routers, then this can be a handy guide to tell you the details.

To see the version of IOS, there is one command which give a detailed overview of the software installed on the system (Cisco router or switch).Lets issue the command:

Certhacker#show version

The following sample information will be shown:

72710

Show version will provide the following information:

  • The version of the IOS
  • Configuration register
  • Hostname of the device
  • The version of the ROM bootstrap
  • The version of the boot loader
  • The last way, time and date to power off the device
  • Uptime of the device
  • RAM
  • Information about device hardware like Processor ID etc.
  • Information about the interfaces installed on the device

It also show some additional information in case of a switch:

  • The MAC addresses of all the interfaces on the switch
  • Installed features like encryption etc.
  • Time and date of configuration file modification

If you want to practice this command, you can use the router simulation in the following page:

Show Version Command Practice Simulation

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