Product Description
ITIL Version 3′s (V3) service lifecycle-based practice incorporates the best of V1 and V2 and tests current best practice for ITSM. “Service Operation” introduces, explains and details delivery and control activities to achieve operational excellence on a day-to-day basis. Readers will find many of the familiar processes from the former service support and service delivery books, which have been updated where necessary.Each of the five core titles shares a consisten… More >>

Service Operation Itil, Version 3

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:

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