How does traceroute work?

[@itsAyndy]

For the past 30 mins, I've just read 5 articles, 3 other videos and only this vid helped me understand the true process of Tracert today. I never comment on KZbin. Thanks a lot!

[@louellaflores5024]

Can you help me out of this. Still I can't I understand. 😢

[@rakshithv]

@@louellaflores5024 How can I help ya?

[@Hack_O_Lantern]

This was fantastic! Well spoken and precise. By far the best description on the internet.

[@invictus9915]

honestly this is the most clear and precise video I've watched that explains how tracerout works. really well done.

[@ChristoConfido1985]

Brilliant explanation. I assumed TTL was an actual unit of time, such as a minute or second. When I realized it was just an increment/decrement operation, it made complete sense. Thank you.

[@shubhamsoni8622]

best networking lecture I have ever watched, thanks bro

[@MrModzControllers]

I second, third and fourth this statement.

[@adrianoros4083]

u are the god of traceroute, i am CCNP and i never understood the concept behind tracert well until i first met your vid and in just 6 mins i am good and makes perfect fkin sense, cisco implementation of traceroute does not use true ICMP with TTL set to 1, it uses TTL = 1 with destination UDP port= 33434 mechanism to get the feedback from routers & therefore get the ip

[@IsraelRivera84]

Thank you. This book of mine never explains Traceroute this simply and easy to understand.

[@vishal1kh]

Thanks for this great explanation, watch many videos but I finally understood how TTL works in trace route

[@TPHBLIB]

This is an absolutely gem and kudos to Geoffrey for putting this here. It is a shame that just a 1000 people have watched this. Wonderful Geoff!!! 👍

[@agbaianya2888]

Yo man you're a blessing, I have been struggling material until now 🙏

[@r0nkh0815]

This was short and well explained. Thank you!

[@FaithReport]

Subscribed..you actually understand what you are talking about in this video. Very helpful!

[@ajithkumaru]

Excellent explanation

[@MrWinfil]

Bravo man , good explanation , i got this question on job interview i didnt knew the response , but now i know Thank you

[@deathcoder]

Best explanation I've seen so far... Thank you!

[@HarshavardhanGavicherla]

You have uploaded these videos just the right time.. Thank you so much..

[@TechFreak51]

THANK YOU .... This is what I wanted to know .. right away to the point !!

[@beefcake0354]

you are very good at explaining it. thumbs up mate.

[@jaysongrace6399]

Very clear and concise explanation. Thank you.

[@SoheilG]

really easy to understand - thank you so much!

[@domenicofalco8598]

Absolutely brilliant! What an explanation!

[@alexramirez5104]

Thanks this really helps me with my Network Communications classwork

[@MrHeLLHoRZeGaming]

You my man are very good at explaining things

[@abdulhaphyz]

thanks for making a detailed simple explanation

[@cindylin5304]

Great explanation! Thanks so much for making these videos :)

[@BulletProofPT]

Really good man! Helped a lot! keep up the good work

[@ciaranflynn6291]

Superb explanation! Why don't they explain like this in University/College...

[@jhilakshisharma4971]

Great explanation on traceroute!

[@nileshnag3966]

Great explanation..Thnx for helping sir...

[@plica06]

Really well explained... thank you !

[@gykg3202]

Awesome explanation

[@possiblewhiteguy]

Great teaching! Thank you for sharing!

[@ronthedon212]

Very interesting, great explanation - Thank you!

[@eddycorona2184]

Nice Explanation !!!

[@luisatierney5863]

This is such a great explanation video! Thanks, this really helped me :)

[@enriquegabriel7708]

Wow. That's a very good video.

[@Joseph-rf7xo]

Bro you are more better on explaining this compared to my professor

[@infinitecycle2064]

Very good and succinct explanation!

[@yoshiekidaniel539]

Excellent explanation !

[@Rahul-sq6gk]

Perfect explanation!!! Thanks

[@LongVu-sm8wm]

Thanks . It's very easy to understand

[@northzider]

Great job in explaining it!

[@radhasingh3549]

This is really helpful!

[@prathameshbagekari7966]

So the number of hops depends on the latency of a router or an ap?

[@anthonyrsc]

Perfect explanation, thanks

[@pswalia2u]

Even professors don't know this type of information in detail.. :)

[@michailwise4102]

Hey I was wondering if you can run this test on an Xbox between a game server? Thanks

[@brianl8540]

THAT was helpful! Thanks!

[@estebanarayaguzman4012]

Finally got this! THanks!

[@boraboe2]

Thank you! This was very informative!

[@alanray124]

best explanation, ever!

[@jaymarsh127963]

Great explanation! Thank you!

[@MeeteshMehta]

Great Work

[@steveowen6228]

Fantastic explanation thank you so much!

[@manafro2714]

Thank you for this awesome explanation! ! ! ! :)

[@mperu99]

can you explain a bit more detail about when you see the * * * message , like you try to ping something that yo know should be there, but not able to ping now, so you use tracert and your first 5 hops you get a response, then * * * is that mean that switch is the issue?

[@MrZaytova]

Great explanation. Thank you

[@ICDDD]

And what happens when I lead the traffic from the target server to another server? Is this hop included into the traceroute?

[@Yauboyy]

Thanks a bunch, really useful video.

[@Asterisk-]

Great instruction!

[@leegaines2391]

great explanation. thanks!

[@benjenkincpa]

Excellent video

[@nepaliketo1900]

WOW, it makes sense! Thanks dude

[@hasan_shans]

So, when I send a request to google.com it goes through routers. Are they the ordinary routers of people at home or only organizations or service providers?

[@sniffikins649]

did you ever learn the answer to this? because I'm curious, too.

[@aaryagawhane5168]

That was smooth!

[@kicsiqki]

Neat explanation. My question is what happens when I run a traceroute, I get to the target address in 9 hops. So I have ten addresses on my scree, address 1 is the first gateway between my modem/router and the target, address 10 is the target. Address 9 has 100% packet loss even when running a traceroute every 3 seconds for 10 minutes straight, but the target address still has 0% packet loss and a normal ping. If address 9 is down, how can the packets even reach the target? How can I identify address 9? All I get is "No response from host" or "Request timed out", no host name or address is given so I cant even tell what gateway needs to be looked at.

[@freebk161]

100% packet loss; so you are probably getting * instead of a numeric value. This means you are not waiting long enough to fetch the Router information. So Increase the Wait time using the option, -w and number of queries by the option -q .

[@citoxe1]

thanks, great video

[@bubblesfw]

nice explanation. thanks

[@Wes_5kyph1]

what layers of the OSI model are hit during a traceroute? can all 7 layers be hit?

[@SripsAKACypher]

Traceroute uses ICMP requests which operate in Layer 3 (Network layer). So only the Network layer and the layers below it, viz., Datalink layer & Physical layer, are covered.

[@ifm5678]

how can you find the location of a website,

[@jessekangas1065]

Nice video!

[@naveensoni8507]

Hey, I have one question, like why does traceroute or tracert gives different results on different network or sometime on same network. Could you please answer this question.

[@adventureswithdavedave]

could it be that different request go through different network segments outers based on things like load balancing and network conditions?

[@saifu62]

superb !!

[@sagar2671]

Great . Hope I was so intelligent like traceroute 😸

[@DKolha]

Why doesn't tracert show the ip of the network devices in the way? like, if you ping a host in the local network, even if there is a router, and than another router or an acess point in the way, it show it directly, 1 hop, as if it was a direct conection....

[@CharlesHayden]

If you only show 1 hop it should be because whatever device you are tracing to is the next "layer 3" device on that path. The TTL message will be reported back from layer 3 devices such as routers, layer 3 switches and firewalls ect. There could also be instances where your traffic is being tunneled through layer 3 devices where those intermediate layer devices appear to be transparent. Geoffrey also mentioned in the video that traceroute response messages could be blocked by network policies or not configured on neighboring devices. Hope that helps.

[@DKolha]

It helped a lot! ...So i guess it is because this access point and the router only work in layer 2 from PC till the printer as example.... the router is layer 3, but only when it routs outside, through the gateway....

[@CharlesHayden]

Yes, your devices will send unicast traffic to its gateway (the router) when you perform the traceroute. Other non-layer3 devices on the segment do not participate in this function.

[@mfatihcinar]

best video ever

[@trendyniro]

Thank you sir!

[@baludojad9289]

Best one, thank you

[@polisidor7414]

thx...very useful!

[@nullbeyondo]

Thank you.

[@brandonxia4561]

Thank you!!!

[@TheFlexXMLG]

Thanks!

[@olaviosa]

brainfriendly stuff! :D

[@dystopianNinja1289]

Thank you

[@kadeeraziz]

Thank you,

[@joepeeer4830]

thnk u

[@diwakarsawant_]

Thanks

[@kamalpaul2629]

Thank u sirr

[@manojkgupta]

Good ... thanks

[@maneeshreddy3825]

Awesome

[@stackray2947]

thank you !!!!

[@zubairmir8062]

how traceroute comes to know that it has hit the destination

[@adamjonrichardson7959]

There are two different types of responses. One occurs when the TTL has reached zero (en.wikipedia.org/wiki/Internet_Control_Message_Protocol#Time_exceeded), and this is what all of the intermediate routers send back. The other type of response occurs when the packet actually reaches the destination (if using UDP as the upper layer, then ICMP type 3, code 3; or if using ICMP echo requests, then ICMP echo reply)

[@SuperAnxion]

Cheers

[@sidhuzharry]

Best.

[@nisalranasingha2852]

thaks

[@hddananjaya]

subscribed :)

[@aaron6807]

Clever

[@arontesfay2520]

That's clever

[@tylertyler82]

decent explanation for newbies but was looking for more in- depth explanation of how the probes work

[@presidentbiden3707]

wtf do you mean by package