This is a ping script with 10 seconds intervals between ICMP requests.
Create a file with .slax extention with the following contents:
/*
* op script for ICMP keepalive with 10 seconds intervals which runs 5 times (or for 50 seconds), then stops unless called repeatedly once every 60 seconds
* script location: /var/db/scripts/op/icmp_keepalive.slax
* Called once every 60 seconds by event-options:
*
* set system scripts op file icmp_keepalive.slax command icmp_keepalive
* set event-options generate-event ICMP_DST_PING time-interval 60
* set event-options policy ICMP_KEEPALIVE events ICMP_DST_PING
* set event-options policy ICMP_KEEPALIVE then execute-commands commands "op icmp_keepalive"
*/
version 1.0;
ns junos = "http://xml.juniper.net/junos/*/junos";
ns xnm = "http://xml.juniper.net/xnm/1.1/xnm";
ns jcs = "http://xml.juniper.net/junos/commit-scripts/1.0";
import "../import/junos.xsl";
match / {
<op-script-output> {
for $i(1 ... 5){
/* ================
* --- PING INSTANCE #1 ---
* ================ */
var $ping-rpc = {
<ping> {
<host> "10.50.50.50";
<count> "1";
<rapid>;
<interface> "reth1.10";
}
}
var $results = jcs:invoke($ping-rpc);
/* ================
* --- PING INSTANCE #2 ---
* ================ */
var $ping-rpc2 = {
<ping> {
<host> "10.20.20.25";
<count> "1";
<rapid>;
<interface> "reth1.20";
}
}
var $results2 = jcs:invoke($ping-rpc2);
/* ================
* --- PING INSTANCE #3 ---
* ================ */
var $ping-rpc3 = {
<ping> {
<host> "10.30.30.40";
<count> "1";
<rapid>;
<interface> "reth1.30";
}
}
var $results3 = jcs:invoke($ping-rpc3);
/* Uncomment below to see ping results:
*
* for-each($results/*){
* <output> name() _ ": " _ . ;} */
/* =======================
* --- Set PING Interval - 10 seconds ---
* =======================*/
expr jcs:sleep(10);
}
}
}
Copy SLAX script onto SRX firewall to the following location: /var/db/scripts/op/icmp_keepalive.slax. This is the default location where JunosOS looks for scripts when you call them.
Automate calling the script once every 60 seconds by event-options:
set system scripts op file icmp_keepalive.slax command icmp_keepalive
set event-options generate-event ICMP_DST_PING time-interval 60
set event-options policy ICMP_KEEPALIVE events ICMP_DST_PING
set event-options policy ICMP_KEEPALIVE then execute-commands commands "op icmp_keepalive"
