Questions tagged [traceroute]

For questions about trace routing where, for instance, you are troubleshooting routing issues or have problems using the traceroute command via CLI on a network device.

Filter by
Sorted by
Tagged with
0
votes
0answers
11 views

Intermittent Connection Problem between two Computers [closed]

Hey guys I have an odd problem I'm trying to troubleshoot but can't figure out what's going on Setup: Computer A is on subnet 192.168.4.0 with ip 192.168.4.145 Computer B is on subnet 192.168.19.0 ...
1
vote
2answers
73 views

Traceroute showing inter-vlan routing?

I currently have two different devices (one server and one client device) that are on separate VLANs (VLAN 5 and VLAN 10 respectively). When the client device runs a tracert to the server, the tracert ...
21
votes
7answers
6k views

Why can I traceroute to this IP address, but not ping?

I have an IP address and can traceroute to it, but I can not ping. You see, I can traceroute 43.224.226.50: dele-MBP:~ ll$ traceroute 43.224.226.50 traceroute to 43.224.226.50 (43.224.226.50), 64 ...
0
votes
2answers
52 views

How does packet tracing deterministically work?

If a packet can take any route, how can you iteratively figure out the path from you to a host? From what I can tell, packet tracing works on the basis that packet_i takes a the route: route(...
3
votes
3answers
198 views

Is it possible to perform a Layer 2 (MAC address) traceroute?

I understand the difference between layer2 & layer3 and MAC & IP. I understand address resolution protocol, etc. But is there any way to do a traceroute that will show Layer 2 information? For ...
0
votes
1answer
39 views

Is that tracrt output normal?

I have found serveral examples where the last tracert hop is shown twice but not exactly an outlput like I've got here: The network setup look like that: Between the two sophos UTM firewalls 77.77....
2
votes
1answer
653 views

If traceroute fails why does ping still work?

If I can ping a router successfully, why is it that when I do traceroute, it stops at a particular interface and says "ICMP type:3, code:3, Destination port unreachable". Doesn't that mean that it can'...
0
votes
1answer
78 views

traceroute and ping behaviour through cisco router

Trying to do a traceroute to a particular destination, the result seems that the destination is unreachable. But when i ping the destination, the destination is replying well. could anyone help to ...
0
votes
1answer
128 views

Ping and tracert command result [closed]

Here i have the response when i use commands ping and tracert for google.com Now, i am still new to networking, but i need to know how to interpret the response that i got here: 1) First off, i need ...
1
vote
2answers
431 views

Why there is only one hop in the tracert?

I use the tracert to a remote server IP address: C:\Users\lll>tracert 103.224.19.11 Track by up to 30 hops The route to f1.FF-SALE.COM [103.224.19.11]:    1 44 ms 44 ms 44 ms f1.FF-SALE.COM [103....
1
vote
3answers
77 views

Whether the traceroute command only can check “to” path, can not check “back” path?

How to detect the router path of traffic? I use the ipip.net for ICMP traffic: I want to check the out path and back path. such as I have A address 60.248.41.135 and B address 103.248.41.135. ...
1
vote
1answer
301 views

Quagga - Configure 3 routers using OSPF

Hi I'm trying to use quagga to connect 3 routers but the middle one doen't complete the path that a trace route command would do even though it knows where the target address is. It seems that ...
1
vote
1answer
28 views

how does Trace route packet work

I am fining difficulties understanding trace route command how does trace route works from source to a destination? how the routers reply to the source with their IP? thank you
1
vote
2answers
67 views

Explanation of traceroute

Can anyone help me to explain the results of this traceroute. Why on hop 2 will latency suddenly increase? and decreases at hop 3 and will rise significantly to hop to 8.
1
vote
1answer
67 views

Why there still need a parenthesis contains it again in traceroute logs?

I traceroute to 104.210.32.76: Traceroute Starting… traceroute to 104.210.32.76 (104.210.32.76), 64 hops max, 72 byte packets 1 10.10.10.1 (10.10.10.1) 25.326 ms 1.344 ms 1.135 ms 2 100.64.0....
0
votes
2answers
56 views

How does traceroute identify destinations to 'hop' to? [duplicate]

When using the traceroute command. For example: $ traceroute google.com The output I get shows hop No. | hostname (ip) | latency 1 | latency 2 | latency 3 Which for google shows the following: ...
1
vote
1answer
49 views

Are traceroute hop latency measurements relative to the previous hop or to the origin?

With traceroute output of this: traceroute to google.com (216.58.223.14), 64 hops max, 52 byte packets 1 192.168.119.1 (192.168.119.1) 1.321 ms 0.980 ms 0.936 ms 2 rtr3-c16-dc1.macrolan.co.za (...
0
votes
1answer
31 views

How frequently do request/response traceroute paths differ? [closed]

If you use the 'ping' command in a terminal, how frequently (if ever) do the network paths to/from the destination differ? What could cause such paths to differ?
5
votes
2answers
359 views

Why there are ip(ip) and domain(ip) 's difference and multi rows records in the traceroute?

In the traceroute command: $ traceroute 104.43.54.2 traceroute to 104.43.54.2 (104.43.54.2), 64 hops max, 52 byte packets 1 10.10.10.1 (10.10.10.1) 4.852 ms 4.623 ms 1.588 ms 2 100.64.0.1 (100....
1
vote
2answers
108 views

Does RTT in same network can be larger suddenly in tracert?

For the homework, I executed tracert command in the cmd to a specific site. I got the result and there was a sudden increasing point, but it was strange. I'm Korean and I used tracert to US site so ...
3
votes
2answers
65 views

Why does ip routing not take an even remotely direct route?

I ran a traceroute on a url to a server we own in New York. I'm in central Florida. Traceroute showed the request being directed to west Florida and then far south Florida before finally being ...
1
vote
1answer
185 views

Why does traceroute gives different number of hops for different protocols used?

While exploring traceroute with different protocols, it gave me the following response: For TCP: user@200411DC0:~$ sudo traceroute -T facebook.com traceroute to facebook.com (157.240.16.35), 30 hops ...
0
votes
1answer
44 views

Router - can I remotely force a router to send my packets through a specific route? (in packet/network layer) [closed]

I'm a newbie in network programming in C/C++ and I'm working on raw sockets to program a simple ping or traceroute application as they are written in common network programming books. Programs like ...
1
vote
1answer
213 views

How would you map a network at layer 2 without CDP or LLDP?

I'm on an ASA right now and can path my directly connected next hop devices via IP address, but I want to make sure there isn't a switch in between. Another related question, when I "show arp" it ...
1
vote
1answer
297 views

Tracert getting timeout on second packet consistenly

I'm on a vpn and tracing to virtualmachines that live in the VPN Server. I've been experiencing slow queries, when they should be fast. below is what the trace is returning. I'm curious as to why the ...
3
votes
1answer
2k views

difference between reverse, forwarding and return path on traceroute

As described on the title, I can't make difference between reverse, forwarding and return path, especially between reverse and return path. Also, how the RTT is affected by the reverse, forwarding ...
3
votes
1answer
83 views

Same hop appears 4 times on a traceroute [closed]

When I traceroute bbc.co.uk in my home Network the first hop appears 4 times. What could be causing this ? @Latitude-7480 ~ $ tracepath bbc.co.uk 1?: [LOCALHOST] ...
2
votes
1answer
221 views

Traceroute for http sites endless loop

I used following command - traceroute -m 255 www.bbc.com and result is an endless loop. I also tried on some other http sites, same result. I also used online traceroute service like monitis which ...
1
vote
3answers
82 views

Spoofed Tunnel Route

What does it mean when tracert always shows a single long jump? The route below is always the same except the last hop goes directly to any destination IP address that I choose. And, how does the ...
1
vote
3answers
293 views

Traceroute inside a per packet load balancing based infrastructure

Could you confirm that in an infrastructure configured with "per packet" load balancing on the Routers (same route same metric), the usage of traceroute become unusable ? In this case the ...
2
votes
2answers
217 views

Why traceroute is still Used?

currenty I'm reading an article about 'Paris traceroute' , as i understood The Classical Traceroute give inexact information about the path that a packet traverse , 'incorrect links , missed nodes '....
3
votes
1answer
2k views

Traceroute UDP port question

I know, that traceroute uses UDP, and for destination port it starts with 33434. Then, with each next hop it increments the destination port number by 1. The questions is: why does traceroute need to ...
1
vote
1answer
40 views

To what degree does the variance of the latency for the three ICMP messages sent back per hop in a traceroute matter?

Does the variance of the latency for the three ICMP messages sent back for each hop in a traceroute help to troubleshoot issues?
0
votes
2answers
321 views

Traceroute program that does not rely on ICMP echo requests?

Is there any Traceroute program that does not rely on ICMP echo requests? The question is very straight forward, and I can't get into more details at the moment.
2
votes
2answers
821 views

Trace Route RTO in one hop but next hop works

Today when I was doing tracert, in the 6th Hop I get RTO but my next hop seems to be reachable. How come it works? 6 * * * Request Timed Out 7 58ms 58ms ...
1
vote
1answer
62 views

cisco network meanings and traceroute

I have a small network here. The connection from router 1 to router 3 is relevant. I have two questions in one. On the one hand I would be interested, why at Cisco between the routers always this red ...
0
votes
1answer
746 views

No response to ICMP (traceroute)

192.168.1.37 can ping 192.168.0.22, but can't ping 192.168.0.240 subnet masks are 255.255.255.0 on all hosts in question Switch/gateway in the middle (192.168.1.253) can ping both of these ...
3
votes
1answer
262 views

Slower hops in traceroute

What are the main reasons why some routers that appear in the traceroute output have a greater round trip time?
0
votes
1answer
442 views

Difference in number of hops calculated using ping vs traceroute

I pinged a host using the minimum TTL value that didn't elicit a 'Time to live exceeded' response to calculate the number of hops between us. When I used traceroute, that number was a little bigger. ...
1
vote
2answers
129 views

how to Prevent hosts to traceroute their G.W ?

I want to prevent all hosts from seeing the core router when they do traceroute , knowing that I'm using cisco router , any idea to do this ?
1
vote
2answers
445 views

Traceroute to another interface of a router

When I try to traceroute to a remote server, I found that most likely the first router interface where the packet arrives responds to traceroute. Is it possible to ask another interface of the router ...
1
vote
2answers
695 views

Traceroute only showing private layer3 hops and then direct end destination

I am doing a traceroute to salesforce.com, google.com and I see all the layer hops to my Firewall and then one hop to final destination- which is incorrect. I am not seeing any of the intermediate ...
0
votes
1answer
212 views

Trace route does not complete and applicatin fails to connect but website works in browser [closed]

I am trying to narrow down a problem with intermittent connectivity issues to a remote service hosted via HTTPS. The application frequently fails to establish the SSL tunnel during the CONNECT phase. ...
0
votes
1answer
59 views

Connect to the second NIC of a remote PC and remotely configure router

Thanks in advance for the time you will spend helping me. I have set up a testing environment with the following structure: __________ __________ _____________ |...
2
votes
3answers
501 views

How to differentiate between UDP traceroute packet and the normal data traffic?

I am a programmer and we can filter out the packets in the router to manipulate the IP or MPLS headers. My question is there any way to distinguish between UDP 1 byte traceroute data vs user traffic ...
1
vote
3answers
433 views

Windows implementation of traceroute (tracert)

Unlike it's Unix/Linux counterpart, the Windows tracert software doesn't seem to have flags to switch between ICMP and UDP. Does anyone know for certain which it uses? I am having trouble with two ...
2
votes
1answer
178 views

Traceroute of Router's own serial port

I got two routers on my network and I am pinging one router's serial port ip address from that router itself. by checking traceroute I found ping is going outside to neighbor router which is directly ...
2
votes
3answers
863 views

Private IP inside internet?

Firstly sorry if this question has already been asked. While playing with traceroute, I came across something really strange... traceroute to 185.75.143.25 gives: - 10.214.255.254 - 10.255.255.254 ...
1
vote
1answer
144 views

Is using traceroute with ICMP echo messages valid?

Theory says that there shouldn't be any ICMP error messages for ICMP messages. When sending ICMP echo requests in traceroute, doesn't this break this rule?
1
vote
2answers
708 views

Can we measure Round trip time between two machines without using either of them?

I have two machines with IP1 and IP2 addresses. Is it possible to measure the round trip time for the packets to travel between these two machines from a machine with a different IP address?