Cisco IOS Scripting with Tcl
Detail here: http://www.cisco.com/en/US/docs/ios/12_3t/12_3t2/feature/guide/gt_tcl.html SUMMARY STEPS 1. enable 2. configure terminal 3. scripting tcl encdir location-url 4. scripting tcl init init-url 5. exit 6. tclsh 7. Enter the required Tcl command language syntax. 8. ios_config " cmd " " cmd-option " 9. exec " exec-cmd " 10. exit Example: Router1# tclsh Router1 (tcl)# Router1 (tcl)#foreach address { +>(tcl)#172.16.1.1 +>(tcl)#172.16.3.1 +>(tcl)#} { +>(tcl)#ping $address }