Can Logic Monitor Pull Routing tables

Been a while since I did this but I've had this need in the past & the easiest way is via Config Source indeed. I've done a config source in the past that was working properly with Palo Alto, Cisco ASA, Cisco IOS & NX-OS devices. Not sure what's your requirement, however, I'm leaving my code (might be outdated as it's old) just for you to use it if needed.

import com.santaba.agent.groovyapi.expect.Expect;
import com.santaba.agent.groovyapi.snmp.Snmp;
import com.santaba.agent.groovyapi.http.*;
import com.santaba.agent.groovyapi.jmx.*;
import org.xbill.DNS.*;
//added manually
import java.text.SimpleDateFormat;
import java.io.*;

//retrieve required properties
hostname = hostProps.get("system.displayname"); //Device Hostname
host = hostProps.get("system.hostname"); //Device IP
user = hostProps.get("ssh.user"); //SSH user
pass = hostProps.get("ssh.pass"); //SSH password
enable = hostProps.get("ssh.enable.pass"); //SSH password
systeminfo = hostProps.get("system.sysinfo"); //get the OS running on the box
foundDevice = false; //declaring variable

//login into  device (SSH) and wait for the prompt
cli = Expect.open(host, user, pass);

//check device type (to decide which commands will input
if (systeminfo.contains("Cisco Adaptive Security")){ //if it's an ASA
	if (enable != null){
		//make sure we're connected (in case the expected prompt = true)
		cli.expect(">"); //expected prompt (using RegEx due to the special characters)
		// enter enable mode
		cli.send("enable\n");
		cli.expect(":");
		cli.send(pass + "\n")
		cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
	}else{
		//make sure we're connected (in case the expected prompt = true)
		cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
	}

	//ensure the page-by-page view isn't active (same as 'terminal length 0')
	cli.send("terminal pager 0\n");
	cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
	//trigger the config backup
	cli.send("sh route\n");
	cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
	//retrieve file content
	output = cli.before();
	//logout from the device
	cli.send("exit\n");
	//close the ssh connection handle then print the config
	cli.expectClose();
	//end connection to the device

	deviceRecon=true
	foundDevice=true //this will lock the deviceRecon == True
}else{deviceRecon=false}

if (foundDevice==false){//only do this if the device type wasn't matched previously
	if (systeminfo.contains("Cisco IOS") || systeminfo.contains("Cisco NX-OS") || systeminfo.contains("Cisco Internetwork Operating System")){//if it's a regular IOS/NX-OS
		if (enable != null){
			//make sure we're connected (in case the expected prompt = true)
			cli.expect(">"); //expected prompt (using RegEx due to the special characters)
			// enter enable mode
			cli.send("enable\n");
			cli.expect(":");
			cli.send(pass + "\n")
			cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
		}else{
			//make sure we're connected (in case the expected prompt = true)
			cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
		}		

		//ensure the page-by-page view isn't active (same as 'terminal length 0')
		cli.send("terminal length 0\n");
		cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
		//trigger the config backup
		cli.send("sh ip route\n");
		cli.expect(/\#/); //expected prompt (using RegEx due to the special characters)
		//retrieve file content
		output = cli.before();
		//logout from the device
		cli.send("exit\n");
		//close the ssh connection handle then print the config
		cli.expectClose();
		//end connection to the device

		deviceRecon=true
		foundDevice=true
	}else{deviceRecon=false}
}

if (foundDevice==false){//only do this if the device type wasn't matched previously
	if (systeminfo.contains("Palo Alto")){ //if it's a regular IOS/NX-OS
		def prompt = '[>#$]'

		//make sure we're connected (in case the expected prompt = true)
		cli.expect(prompt); //expected prompt (using RegEx due to the special characters)
		cli.send("\n")
		cli.expect(prompt)

		prompt = "\\Q${cli.before().readLines().last().trim()}\\E${prompt}"

		//set terminal paging off
		cli.send('set cli pager off\n')
		cli.expect("${prompt} set cli pager off")

		cli.send("show routing route\n")
		cli.expect("${prompt} show routing route")
		cli.expect(prompt)

		//retrieve file content
		output = cli.before();

		//set the terminal paging on
		cli.send('set cli pager on\n')
		cli.expect("${prompt} set cli pager on")

		//close the ssh connection handle then print the config
		cli.expectClose();
		//end connection to the device
		deviceRecon=true
		foundDevice=true
	}else{deviceRecon=false}
}

//only handle the output if the device was recognized
if (deviceRecon==true){
	//check which delimeter line needs to be used
	if (systeminfo.contains("Cisco NX-OS")){ //NX-OS needs to use a different delimeter line
		delimeter_line="0.0.0.0/0"
	}else{
		delimeter_line="Gateway of last"
	}

	if (systeminfo.contains("Palo Alto")){ //Palo Alto needs to use a different delimeter line
		delimeter_line="===="
	}else{
		delimeter_line="Gateway of last"
	}

	printfromhere=false //set this var to false (controls from where it starts the output (of the prev. command)

	output.eachLine
	{ line ->
		if (line.contains(delimeter_line)){
			printfromhere=true //set to true (means we reached the point to start the output
		}

		if (printfromhere==true){
			/*filtering unwanted line(s)
			- Gateway itself
			- Empty lines
			- Prompt line (containing the actual device hostname (unwanted)*/
			if (line.contains("Gateway of last") || line.contains(/^\s*$/) || line.contains(hostname)){
				//DoNothing
			}else{
				//removing the route time (within the routing table) since that timer is constantly changing (what triggers differences)
				// ', ' using the string previously in order to split the line in 2 part (then choosing the first one)
				lineOutput= line.minus(line + ",").split(", ")[0]

				println lineOutput //output the line
			}
		}
	}
}else{
	println "Device OS didnt supported by this script yet!"
}