For some reason I wanted to write a trace route script in PowerShell, but decided to run it through Google first to see if it had been done. Surprisingly few results came up, and as far as I can tell, only one true PowerShell script doing Trace Route without just being a wrapper for tracert or something similar: https://snoj.us/75/traceroute-wit…

Trace-Route.ps1

function Trace-Route {
	<#
        .SYNOPSIS
            Trace the route between source computer and a target machine.
        .DESCRIPTION
            Trace the route between source computer and a target machine.
        .EXAMPLE
            Trace-Route Computer01
            Perform trace route to Computer01
        .EXAMPLE
            Trace-Route -Target www.microsoft.com -ResolveHostname
            Perform trace route to www.microsoft.com and try to resolve hostname for each hop.
            Note! This will slow down the function somewhat.
        .NOTES
            Author: Øyvind Kallstad
            Date: 28.10.2014
            Version: 1.1
	#>
	[CmdletBinding()]
	param(
        # Hostname or IP to trace to.
        [Parameter(Position = 0, ValueFromPipeline = $true)]
        [string] $Target = $env:COMPUTERNAME,

        # Set starting hop.
        [Parameter()]
        [int] $BeginHop = 1,
 
        # Set maximum number of hops.
        [Parameter()]
        [int] $MaxHops = 30,
 
        # Define timeout in milliseconds.
        [Parameter()]
        [int] $Timeout = 1000,
 
        # Try to resolve hostname for IP in each hop.
        [Parameter()]
        [switch] $ResolveHostname = $false
	)
 
	# verify that we can reach target system
    try{
        $ping = New-Object System.Net.NetworkInformation.Ping
        $pingResult = $ping.Send($Target)
 
        if(-not($pingResult.Status -eq 'Success')){
            Write-Warning "Unable to resolve target system $Target"
            exit
        }
    }
    catch{
        Write-Warning "Unable to resolve target system $Target"
        exit
    }
 
    # define some data to send
    $sendBytes = @([byte][char]'a'..[byte][char]'z')
 
    for($i = $BeginHop; $i -lt $MaxHops; $i++) {
        # define ping options; set start hop and fragmentation to true
        $pingOptions = new-object System.Net.NetworkInformation.PingOptions $i, $true
 
        # perform ping
        $pingReply = $ping.Send($Target, $Timeout, $sendBytes, $pingOptions)
 
        # get ip for current hop if possible
        if($pingReply.Address -ne $null){
            $ip = $pingReply.Address
        }
        else{
            $ip = '*'
        }
 
        # get roundtrip time
        $roundtripTime = $pingReply.RoundtripTime
 
        # get status
        $hopStatus = $pingReply.Status
 
        # resolve hostname
        if ($ResolveHostname) {
            try{
                $resolvedHostname = "[$(([System.Net.Dns]::GetHostEntry($ip)).HostName)]"
            }
            catch{
                $resolvedHostname = ''
            }
        }
 
        # create custom object and send to pipeline
        Write-Output ([PSCustomObject] [Ordered] @{
            Hop           = $i.ToString()
            IP            = "$($ip) $($resolvedHostname)"
            Status        = $hopStatus
            RoundtripTime = $roundtripTime
        })
 
        # clean up
        Remove-Variable ip, roundtripTime, hopStatus, resolvedHostname -ErrorAction 'SilentlyContinue'
 
        # stop loop if current ip matches the target ip
        if($pingReply.Address -eq $pingResult.Address){break}
    }
}

Hi!
Very nice script!

Do you know if it is possible to have a script that checks ff the tracert has a specific IP?

I would like to check if route has changed from Link1 to Link2.

Many thanks in advance!

Hi Machammarj,

Here is a way to do a specific IP address in BATCH and not in powershell as I needed to do the same thing. You will need an input file with a list of IP address on a new line.

`@echo off
setlocal enabledelayedexpansion

set OUTPUT_FILE=ips.txt
set IP_FILE=output.txt
set VIP_FILE=EXTERNAL_VIP.txt

set DC=""
set temp=""
set route_address=""

nul copy nul %IP_FILE%

for /f %%k in (%VIP_FILE%) do (
tracert.exe -4 -d -h 15 -w 300 %%k|Findstr /C:"ms" > %OUTPUT_FILE%
::setting max hops to 20 and timeout to 50
for /f "tokens=8 delims= " %%i in (%OUTPUT_FILE%) do (
set route_ip="%%i"
ECHO !route_ip! | Findstr /C:"10.1." >nul & IF ERRORLEVEL 1 ( set temp="" ) else ( set DC=AT
set route_address=!route_ip!)
ECHO !route_ip! | Findstr /C:"10.6." >nul & IF ERRORLEVEL 1 ( set temp="" ) else ( set DC=ORD
set route_address=!route_ip!)
)
echo %%k is routing from !route_address! in !DC!>>%IP_FILE%
set DC=""
set route_address=""
)

%IP_FILE%`