This script doesn't sound too difficult on the surface. You would use a watchdog timer ED to trigger every two hours. The question is, do you really want to trace to 50 addresses in parallel, or can the script trace to each in series? What do you want to do with the output?
At the simplest, this script will perform a traceroute to a host specified in the traceroute_host EEM environment variable. The output will be sent via a syslog message.
::cisco::eem::event_register_timer watchdog time 7200
if { ! [info exists traceroute_host] } {
action_syslog msg "ERROR: Cannot execute: environment variable traceroute_host has not been set"
exit 1
}
namespace import ::cisco::eem::*
namespace import ::cisco::lib::*
proc run_cli { clist } {
set rbuf ""
if {[llength $clist] < 1} {
return -code ok $rbuf
}
if {[catch {cli_open} result]} {
return -code error $result
} else {
array set cliarr $result
}
if {[catch {cli_exec $cliarr(fd) "enable"} result]} {
return -code error $result
}
if {[catch {cli_exec $cliarr(fd) "term length 0"} result]} {
return -code error $result
}
foreach cmd $clist {
if {[catch {cli_exec $cliarr(fd) $cmd} result]} {
return -code error $result
}
append rbuf $result
}
if {[catch {cli_close $cliarr(fd) $cliarr(tty_id)} result]} {
puts "WARNING: $result"
}
return -code ok $rbuf
}
set output [run_cli "traceroute $traceroute_host"]
action_syslog msg "$output"
