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Questions tagged [traceroute]

89 questions
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when router sends ICMP protocol error message how does it set it's own TTL?

when using (traceroute -q 1 serverAddress), we know that it starts with TTL(Time to Live) = 1. when it goes through router, the router decrements TTL by 1. If TTL becomes 0 at that router, it sends back ICMP error TTL exceeded message. Now, tell me…
David Roonie
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opened port for tcp/udp using iptables for traceroute, but it still fails, why?

Traceroute to the server fails, this is description of the problem: root@newTralev ~ # ifconfig eth0 Link encap:Ethernet HWaddr 74:d0:2b:9a:85:74 inet addr:176.9.18.37 Bcast:176.9.18.63 Mask:255.255.255.224 root@condor1796 ~ #…
Mladen Adamovic
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Why would traceroute print destination ip for each hop instead of router ip?

$ traceroute -n 8.8.8.8 traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets 1 8.8.8.8 3.158 ms 4.246 ms 5.054 ms 2 * * * 3 8.8.8.8 9.121 ms 10.245 ms 9.327 ms 4 8.8.8.8 12.134 ms 13.160 ms 13.144 ms 5 8.8.8.8 9.727 ms …
alexei
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What is blocking my mysql connection?

We run several docker images on a VM. sudo iptables -S shows a lot of docker networking. We try to connect to an external MySQL database in another net. mysql --host=mysql.example.org --user=thisuser thatdatabase We get error message: ERROR 2002…
Bodo
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Why this ip range is only showing * * *?

I've got a question. When I try to do this on GNU/Linux: traceroute -m 255 -I [the_ip] Then I get this: 192.0.0.1 (192.0.0.1) 6.788 ms 6.774 ms 6.781 ms 62.214.36.201 (62.214.36.201) 7.672 ms 7.869 ms 7.872 ms 62.214.37.202 (62.214.37.202) …
ubik
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How do I do traceroute/tracepath without any admin privileges?

Basically, I need to "trace a packet from my computer to the host" to diagnose a network issue and I do not need any fancy additional functionality. Redirect me to the right place if this is not the place for this question, but I need to do…
Sacha T Red
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Tracert high latency

I have used tracert command to check local network status, at the second hop I get random- high numbers for latency,(attached file), but when I use ping the total latency has an average of 1ms. What is the problem? I really appreciate your…
JFK1963
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Should traceroute be used to diagnose network latency issues?

I ran the traceroute command from Server A to Server B, two of the hops display a latency between 250ms to 480ms. However when running ping from Server A to Server B, the response is always within 1ms. My network admin team is of the opinion that…
Oliver
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Any protocol used by TRACEROUTE ? ICMP or UDP

Any protocol used by TRACEROUTE : ICMP or UDP or IP ? Or use them all : Encapsulation ?
Karim Michel
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Ping times change over time only to a certain server

The problem happens only to a certain server from a nearby country. When i test the ping to that server, i get 30-40 ms today, then tomorrow i'll get 240-250 ms. Sometimes, an hour later it'll be 50-60 ms and then later gets higher or maybe lower…
user313510
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What Factors that affect ping to a dynamic IP?

If i'm going to test the ping between me and my friend, will interleaved mode that applied by cabinet would affect his connection and expect an increase in the latency/ping to his machine regardless of distance?
Semphie94
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Add hop in tracert

Basically, I'm interested how to make one of my servers hop in tracert. My first server is located within DC in France My second server if located within DC in Russia I want my 1st server to be in traceroute behind my 2nd server Current path to my…
dnleiman
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Inconsistent ping to my ISP backbone

this is a traceroute from My ISP to the same ISP backbone located in another city from my country here (500miles aprox) : http://i.stack.imgur.com/BbQjm.png Does this idicate a traceroute problem? And will this affect some real-time applications…
Semphie94
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Why a traceroute to a dynamic ip is different from static ip addresses?

Sorry I can't show you an output of a traceroute atm. Anyways, i find it strange when i try pinging a dynamic ip from the same ISP and get a good route and ping times. Where if i pinged their static ip address, it would takes longer or maybe a bad…
Semphie94
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