Reading the material that is included with Cisco Version 4.0 0 show lens
show version
show?
The "show version" command.
#show version
show version
Cisco's version of the Firewall.
show flash
show version
Cisco has released a VPN client that is compatible with the Mac OS X operating system. You can download the compatible version on the Cisco VPN website.
As long as you get an IOS version that supports v6.
This is a command line use in Cisco devices to show neighbors which is using Cisco Discovery Protocol (CDP).