GRE Tunnel Theory and Configuration

[@SoulJah876]

I'm rewatching this years later while preparing for ENARSI and just to refresh knowledge I haven't needed to use for a while. Thank you for everything you do, Kevin.

[@khalid82atd]

well I found you like one of those teachers who explain much tougher topics with fun stories and real life examples, and it becomes so easy to get your concepts cleared. wow that animation of tunnel was great work and certainly helped. I wish you have similar animation for spanning tree,

[@pradeepkumarsb]

Such a short, sweet and simple explanation on GRE. My mind really got encapsulated with the information that I needed :-). 5 stars for this video

[@theforeverpuddle8754]

You really are one of the best teachers for getting the broad concepts. Going for my CCNA soon, yours are one of the best resources I have come across. Thank you.

[@ceser33]

Perfect illustration, perfect voice!!! Loveing it!

[@andrewchamp996]

Brilliant video. The animations give a much better understanding over static images. Well done!

[@josephjefferson6368]

Wonderfully explained and shown. Thank you, Kevin.

[@malekkassar]

Thank you for everything you do, Kevin :)

[@PierrouXProductions]

Thanks a lot Kevin ! I'm currently working on the ICND2 "VPN" chapter and I had some difficulty understanding it (I'm french so english isn't my native language). Thanks to your video this concept is already more clear ! Now you have one more follower ! Have a nice day !

[@cawaboonga85]

It was so simply, it really really helped me emulaing this in GNS3, I was starting to getting frustrated, thank you Mr. Wallace! You are an awesome teacher and inspiration!

[@KostekAKP]

Man I never saw such good video with explanation of network concept. I hope that i will find more on your profile!

[@mapleoscar8690]

You are awesome!! Ur videos helped me alot in my studies, dont stop making them please!!

[@BlesmatM]

I have only two network professors, Keith Barker and K. Wallace. guys you are awesome.

[@YogurtDrinkz]

Awesome video Kevin! Suffice to say it helps me understand GRE tunnel much better!

[@sirmontecristo2808]

Hi Kevin, thanks a lot for these videos. I'm starting the 300-101 and sure, I'll have a lot of questions. Also, can't wait for the hard cover!!!

[@kristeinsalmath1959]

Simple and directly to the point. Thanks.

[@toxicplayer8089]

Man, that's a great vid, keep it up...!

[@SUMIT-sy7qs]

Kevin Wallace always on the top :)

[@solomonmeharena4397]

WOW !!! This a fantastic kinda ART in IT presentation on GRE tunnel simple and wise .... good job can not wait to learn more !!!!!!!

[@YBOUDJ]

Thank you so much for the explanation. Very informative! Definitely recommend watching this video!

[@jorgeorozco935]

Very good video, it really helped me to understand this topic and also its configuration, thanks Mr. Wallace

[@mongeasy]

This guy's good! Great explanation and even greater animation to top it off! LIKE, LIKE, LIKE!!!

[@papichuuloo4238]

great training video

[@chiyoung8404]

Thank you for such a informative and useful video! it might be huge help for me!

[@benponderin]

outstanding content

[@deepak475]

Thanks for the great explanation!

[@resres6596]

Good job!

[@turbowhine360]

excellent video, thank you

[@Sky1]

Love how he makes it simple But I still don't understand why the loopback interface is used instead of just using the tunnel interface.

[@brandonfontaine285]

In production would the tunnel source be the local router WAN IP and tunnel destination is remote routers WAN IP?

[@khalid82atd]

The best explanation

[@khalid82atd]

You are well come sir, I request you to upload IPSEC over GRE I am a student of CCIE R&S would appreciate if you have time to upload some relevant videos. Thanks a Million

[@digitaldistancerecords736]

Hey quick question so EIGRP has to be enabled on the router?

[@vikirocks28]

Well explained

[@Hebergeniweb]

Thank you very much

[@DileepKumarMB]

Nice one. How do i confirm that, GRE tunnel is using IPsec or not?

[@Dreathan]

Cool video but i found some problems with your explanation to how to config it. imo it should be explained liek this for router 1 1) create tunel /30 - for router 2 use other ip address from same subnet 2) tunnel source 3) tunel destination !!!4)add static route to via !!! And vice a versa for router 2 config.

[@collinrobbert5060]

Nice video

[@ernestcaravalho9074]

Much appreciated.

[@rahulrahulpm2900]

@ Kevin Would you pls explain why we need to assign ip address in tunnel interface. ?? Thanx

[@boomstrap7106]

how did you configured eigrp for tunnel?

[@DillyDogSays]

Would I use GRE tunnel to communicate with VN's in SD-WAN?

[@tahir5916]

Which semulater you are using for this topology

[@tigerduaribu]

Thanks a lot for very useful tutorial..!!

[@xguidosan]

so easy! thank you so much!

[@rickynguyen1790]

Kevin, do you have a video on manipulating bandwidth on Tunnel interfaces?

[@charlesj84]

Great explained :D

[@rajibahmed9462]

Thank you

[@rajibahmed9462]

I am a CCNA and Web Developer also. I show your video and It's Very Helpful. I like this so much. Thanks to you again for this helpful work and All the Best. Thanks again

[@quila991]

THANK YOU

[@suggriv7926]

WhOw mindblowing Sir 🙏🏻

[@vahoramahamadali4915]

well, that's a great video, but I have a couple of questions. did you advertised tunnel address or loopback address in eigrp? if you then why eigrp not advertise those routes with neighbor routers? secondly, how to configure a tunnel using a static route in the tunnel itself ?? I tried to configure a tunnel with OSPF and I advertised loopback interface as well, tunnel came up, up but I couldn't able to ping remote Lan.

[@Propan77]

Hey Kevin! i want to know why you didnt specifie the tunneling mode ? does the router choose GRE automatically or what ? if yes why doesnt it choose another tunneling mode like ISATAP ?

[@ArmorKing012000]

Hi from Lima Peru.

[@Ramakrishna-qh1bm]

how to fix if the destination tunnel goes down

[@seanmcpike1503]

why is the source address the loopback

[@chaithanyakatari7896]

great bro. go a head ..

[@niteshshrestha9341]

Can anyone clear me on this, in real world would the tunnel IP would be a public IP? Thank you

[@systematicbsk]

What is the difference with Vpn ?

[@jorgeorozco935]

There is no difference is just that tend to think that VPN comes encrypted by default but different protocols makes it to be encrypted for example IP SEC, mentioned in this video

[@samonzs581]

this doesnt explain the source correctly, theres a missing section, hows it communicating through the tunnel without a ospf source or ip route ?

[@josephtillman8639]

Shouldn't your tunnel source be the internet-facing interface and the tunnel destination be the remote routers public IP address? If you use loopback address or local IP address, the routers won't know how to reach each other over the internet. This configuration doesn't make sense.

[@josephtillman8639]

Ah, totally makes sense. It is interesting that in all of my CCNA study, I only ever saw the GRE tunnel implemented as as solution to connect a branch to HQ over the internet. Not a single implementation within an organization's network like you show here. Thank you.

[@josephtillman8639]

My Tunnel is up and pingable, however traffic still goes through the other routers instead of choosing the tunnel. Using eigrp

[@josephtillman8639]

I'm sure you do, no worries. Troubleshooting is part of the learning experience!

[@konamicodesmashed1719]

Slow down

[@marquesvalentin9187]

bof

[@PornoCorner]

/head explodes Thanks for this very quick and effective tutorial on what this concept it. I just heard about it 15 minutes ago and now have a thorough understanding of what it's for. More instructional videos ought to emulate your methods. Cheers! :)