Tcling your IOS router

Basic TCL scripts on IOS will make your life a lot easier :)

Pre-requisites:

• Tcl scripts must be run from tclsh, which is an EXEC mode command requiring enable access.
• Cisco IOS 12.2(25) S or 12.3(2) T. Cisco IOS 12.3(7) T for the SNMP MIB access via Tcl.

Sample multiple host ping TCL

tclsh

foreach ip {

1.1.1.1
2.2.2.2
3.3.3.3

} {ping $ip}

Reference:
http://www.netcraftsmen.net/welcher/papers/iostcl01.html
http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_guide09186a00801a75a7.html