Questions tagged [traceroute]

traceroute is a common networking utility to determine the path a packet takes to a target IP device.

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How to see unresponsive servers in a traceroute?

When you do a traceroute and a router does not respond within a timeout then traceroute prints an asterisk, like traceroute my.domain.com ... 13 te9-2.dsr01.dllstx3.networklayer.com (70.87.253.14) ...
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How to traceroute a site behind a VPN on a Mac?

I am trying to use traceroute on MacOS 12.4 but I do not get any useful output it seems. I am trying to get the traceroute to a resource behind a VPN. The output is $ traceroute -d -I my.domain.com ...
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Running a reverse MTR report on Windows

I am using WinMTR to check my connectivity to this specific host but is there a way to get the report of a reverse mtr? I need to get the report from that host to my public IP address but WinMTR only ...
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Why do traceroutes start with the same path?

I'm curious as to why all traceroutes start with the same path. For example, if I want to do a traceroute from my current location to www.google.com and another one to www.bbc.co.uk, the first few ...
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Traceroute output : what is the correct path?

I am trying to understand and draw network path from traceroute output. An example output looks like below: Suppose I want to draw the path between 3rd and 4th hop. Is it right to assume that there ...
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pathping command columns understanding

when we run pathping command on windows we see different columns showing the detailed statistics. just want to know difference between source to here column vs node/link column in detail? when I ...
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route add command not effective for routing packets

I have a linux device with two interfaces. An eth0 interface which is assigned 192.168.0.12 and usb0 which is assigned 192.168.7.2. root@localhost:~# route -n Kernel IP routing table Destination ...
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Can't access a host IP, but can traceroute and MTR

We are having an issue with a website hosting provider. All of our sites, and other people from home alike are able to access our website, however one of our two uplinks at one site is unable to ...
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Are there any alternatives to tracert command in cmd/PowerShell that doesn't suffer the request timed out issue?

The cmd tracert <URL> command, quite often, suffers the request timed out issue if the ICMP packets/port are blocked by the routers/ISP's firewall. Now I was wondering if there is any cmd/...
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Missing hop in traceroute

I have a Ubuntu Server connected to two networks: 10.0.8.18/24 and 10.0.18.2/24. When doing traceroute from 10.0.8.x to an IP in 10.0.18.0/24 I get: traceroute to 10.0.18.1 (10.0.18.1), 30 hops max, ...
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Concerned about security due to strange tech happenings at home

I've done a little research into this but have not discovered a definitive answer that satisfies my mind with, what I would consider to be a sound reason. Can anyone shed some light on what has ...
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carrier networking strange things

My configuration is as follows: my linux laptop ---eth---> openbsd_fw ---usb---> 4g_modem ----> internet If I run MTR to 8.8.8.8 it gives me the following: Host ...
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Lower Ping/latency On Traceroute, higher ping on game?

I am having an unusual problem in Ping on Fortnite. Usually I play on middle east servers on 200ms Ping, (lowest I can get). I tried changing DNS, using a VPN but it will only increase my ping. So I ...
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Tracert access is denied in windows 7, side-by-side configuration incorrect

I use windows 7. This is my personal computer. When I tried to use tracert today in command prompt with administrative privileges, it says access denied. I have used to command in the past without any ...
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How do I get traceroute to work like tcptraceroute?

On Mac OS 11 the man page for traceroute says you can set it to TCP mode with -P TCP. When I attempt to do this I get no responses: [me@laptop ~]$ sudo traceroute -f 6 -m 10 -e -P TCP -p 443 www....
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5G modem shows no traceroutes

I have a very bad internet connection, so I had a 4G/LTE modem to access the internet. Behind it is an asus router to which all my devices are connected. But this was a bit slow recently, so I ...
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Tracert not showing IP addresses instead showing something I don't recognize

I am working on a network issue but having issues with tracert. Why is it showing those bracketed numbers instead of what would look like a traditional IP address? I ran this same tracert on a ...
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How to view resolved ip adresses in tracert command in cmd?

How can I see resolved IP addresses in the 'tracert' command in command prompt. Some guy on the internet is getting resolved names for the same command as mine(tracert 8.8.8.8). His and mine.
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ping Request Timeout causes?

My home internet has recently gone on the fritz. Running ping google.com seems to return interesting results: equest timeout for icmp_seq 2028 Request timeout for icmp_seq 2029 Request timeout for ...
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Do Linux (4.15.0-130) and Windows (10) treat ICMP differently?

While attempting to troubleshoot a Windows 10 machine with erratic network problems, I did a traceroute to a host and got somewhat different results from what I see on my Ubuntu 18.04 system with ...
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Traceroute/tracert fails to receive hops return information

I noticed that with some routers/gateways when I issue a traceroute or a tracert in a 'inner' computer the hops always fail with: request timed out can anybody clarify this? what information goes ...
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Windows ping to Any IP including 127.0.0.1 hangs, but internet works

I have weird behavior on my Windows 10 operating system. Any ping/tracert command hangs and nothing happens. I have never seen something like this before, and all i have found in the google aren't my ...
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Default gateway not responding to pings with a TTL of 1

I am attempting to create a traceroute program, but this isn't directly related to programming. I noticed that my router will not respond with a Time Exceeded to pings that have a TTL of 1, which is ...
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Why can’t I see the second hop in tracert?

giga.cube is my local router. My PC is connected to it via WiFi. After that I see a hop whose IP adress can't be seen nor pinged. Is this nominal? Be aware that the GigaCube is connected to internet ...
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`traceroute` does not work properly in the NAT mode with port forwarding in VirtualBox

I have the following setup: Adapter: NAT Port forwarding: TCP | host port 2277 | guest port 22 when I traceroute google.com, I get the following result: traceroute google.com traceroute to google.com (...
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How does my Wi-Fi router seemingly cause lag in another hop?

$ traceroute -I 203.195.123.148 traceroute to 203.195.123.148 (203.195.123.148), 64 hops max, 72 byte packets 1 192.168.0.1 (192.168.0.1) 2.249 ms 1.187 ms 1.257 ms ... 8 180.87.67.46 (180....
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Why is tracert not showing my public ip address?

Tracert does not show the IP of my WAN interface, not the gateway also. My public IP starts with 37 and it does not appear in tracert. tracert www.google.com 1 3 ms 3 ms 2 ms vodafone....
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How to find IP of Wireless AP (NOT the router, just the AP!)

My Wireless AP is a Tp Link TL-WR740N. It's continuing to broadcast its SSID and I can connect to it and use the WiFi and indeed connect to the internet (via the router) using it. However I need to ...
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How to interpret specific MTR packet loss data (are these IPs internal or external?)

I've been experiencing some pretty bad, but intermittent, packet loss and I'm not sure if I need a new cable modem or router, or whether it's the ISP. I ran MTR (well, winmtr) as soon as it started ...
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Connection suffers from "packet loss" and trace route

My internet connection has been suffering from packet loss for weeks and I'm trying to find where it is happening. It can go up to 35% packet loss, which is terrible and it's really bad when playing ...
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How do I traceroute an ipv6 address with mtr?

I'm trying to troubleshoot a connectivity issue to an IPv6 addressed host using mtr, however, despite using the -6 switch, it fails with the error: mtr -6 2001:db8:1d4f:10::1 mtr-packet: Failure to ...
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How to understand the output of traceroute?

I see some entries have multiple rows. Does anybody know why? Thanks. $ traceroute 8.8.8.8 traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets ... 8 108.170.252.129 (108.170.252.129) 36....
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Why is this international internet traffic routed so inefficiently? [closed]

Being located in the Philippines/Asia, I did a traceroute to a datacenter in the Netherlands/Europe: traceroute to www.transip.nl (37.97.254.1), 30 hops max, 60 byte packets 1 _gateway (192.168.0.1)...
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I can't access most sites using IPv6. Is it an issue with "Level 3" network?

Note: I'm not a network expert, and I don't have deep knowledge about IPv6. Recently, IPv6 connectivity seems not to be working here. (Tested through Firefox) The funny thing are, when doing a ...
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Route given by traceroute and ping does not match routing table

I have a network of over 100 hosts running CentOs 7 With Quagga installed on all of them. Between certain hosts, the route given by traceroute (and incrementing ttl flag with ping) does not match the ...
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Why does traceroute time out when I try it on certain hosts?

I have a large LAN set up with over 100 hosts. Most of the time traceroute works fine, but in certain cases between two particular hosts, it times out. I have tried the default traceroute as well ...
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Is there a way to configure traceroute such that the -T or -I flags do not require root privs to perform?

I am using Centos 7. Basically I just want any user to be able to do a ICMP or TCP traceroute. Is there a way to configure traceroute such that the -T or -I flags do not require root privilegess to ...
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Getting firewalld to allow traceroute for centos 7

We have a server running CentOS 7. There is a weird situation where I can ping to the server from my firewall but was not able to perform a traceroute. The server is a directly connecting to the ...
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Traceroute: destination IP-address returned for all but first hop. (Debian 9.11)

At some point in the past year, Traceroute behavior changed. Was working correctly prior. (Debian v9.11 Traceroute 1:2.1.0-2) Now, first traceroute result, my gateway, is correct, but all the ...
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How can ping/ tracepath derive the path MTU info? [closed]

How exactly do ping and tracepath manage to obtain info on MTU?
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Tracert throws up an error with -R option

When I use tracert without any options, it runs fine. As in: tracert google.com But when I run it with -R: tracert -R google.com It throws up the error "Unable to resolve target system name ...
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Interpret the output of these traceroute commands

I've been getting unusually high ping (~180ms) to the League of Legends OCE server (Australia) when playing from NZ, and so I've done a traceroute for the IP of the server. Is anyone able to give ...
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Tracert tracing to different ip than the one returning from who is [closed]

I am trying to figure out why I cannot access a specific website from my office network. If I visit this site from another ip then there is no problem. I can visit also other websites hosted in the ...
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Double Nat Detection

I am trying to figure out if I have double NAT so I ran some traceroute. First I set my router in NAT mode and ran traceroute 8.8.8.8 Here the result traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 ...
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How to use Traceroute --mtu on Mac

I am trying to do the following Traceroute --mtu google.com however I get a usage: traceroute [-M first_ttl] etc giving me all the command lines. How can I use --mtu with traceroute on mac? I am ...
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mtr output: last entry is repeated on all hops

Whenever I run mtr, it briefly shows a single hop per line, then upon reaching the last hop it shows up as a duplicate entry on all other hops: My traceroute [v0.92] [local ...
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pathping shows PC hop twice with 100% packet loss

The pathping to 185.60.112.157 (game server) shows my PC hop twice, the second time with 100% packet loss back from the router.  Is this an issue? Since "Lost/Sent" after this hop are all 100% packet ...
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Why our website is not reachable from our office (static IP) but works fine on other ISP?

From our office, we can't reach our website anymore. But from home (or other ISP network, ever from cellphone), it is reachable!  I performed a traceroute from office and the data stop at 116.251.117....
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Can't ping to VM on another computer, even with route table entry

I have 2 computers. Computer A is running a VM, which is behind a NAT. Computer B just wants to PING that VM. I know that VM behind NAT is intended to be inaccessible from the outside, that's why NAT ...
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Find the average RTT with the asterisks

These two pictures present the results after running a tracerout I want to find the AVG RTT for each line but dont know the value of the asterisks should I put a zero and then find the avg of all of ...
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