Taking an advanced undergraduate course in networking and you basically covered everything 1000x more clearly than the prof in 1/1000 of the time. Thank you so much!
This video is better than the ccna course definition of it they define in the frame "special multicast addresses" now i know why computers don't have to "read" the frame that's because of the ff02::1 all-node multicast group addresses. Thanks a lot
Good explanation about neighbor discovery protocol that consist of two major things: getting IPv6 address for itself and getting neighbor MAC address to ensure it is still available, from multicast group. Also, some interesting thing about packet type that is determined by number.
my doubt is, in all that neighbor advertisemnt and discovery what is the role of the switch since switches are layer 2. or do we need special layer 3 switches?
Amazing video sir. Bit confused with the node solicited multicast addresses in the NS portion. Node A FF02::1:FF23:B578 and node B FF02::1:FECD:34EE, where node solicited multicast address prefix FF02::1:FF00:0000/104. Thank you
because layer 2 is local communications and NDP is a method to find your neighbors, which are sitting in your neighborhood. It is local. You don't look for your neighbor over the Internet which is layer 3.
Thanks for the greta video! Your explanation is easy to understand. But, it will be more interesting if you upload the tutorial of this ND implementation on real device. Do you have any plan to do that? I'm really looking forward for your reply ;)
Hi Sunny very informative stuff... I have one question in the neighbor solicitation when Host-A sends a request for MAC Address to Host-B why does it not use the global unicast or link-local address of the Host-B. Why does it use solicit node multicast of B, any specific reason? Please explain. Thank You.
I’m just learning IPV6 as well, so maybe I’m wrong about this, but here’s the reason: Computer A and B are in the same local network, but they are not just connected directly to each other, they are connected through a switch. The ICMPV6 packages will be sent out as a level 2 (for example ethernet) broadcast, so they get sent to every computer on the local network. Because we are trying to find out the MAC address of computer B we cannot yet send a package directly to computer Bs MAC address. Likewise in the case that the 2 computers are connected by a level 3 switch, the message much be sent as a level 3 broadcast otherwise the level 3 switch will be forced to send the packet to all the local computers. That’s why it must use the node multicast address, so ensure that the packet gets sent to all local computers.
So I really am trying to follow this, PLEASE HELP ME. I have found IPv6 Ethernet connections an f8oe or something random devices connecting to my WiFi and using ALOT of data?. I never looked before and I decided to log into my Comcast account today to see why the bill was weird. Turns out I’ve been being charged 100$ extra a month because we go over the data limit.. but idk HOW and I’m thinking.. does this basically mean one of my neighbors is a total A hole and is having me pay for data that they are secretly using? Or even worse is it possible they can go through my personal devices photos and videos and private stuff as well? Please please help and tell me HOW to stop this if that’s what’s happening. Please
Hi sir, thanks for that vidos firstly. I have a question, when a host boots up, he sends message for all router using FF02::2, ok. My question is, for the host that want know the Neighbor in Neighbor Messagens, what adress they use FF02::2 or FF02::1, how that works ? Thanks for do a great job for community with this videos.
Seriously man, best explanations on the internet about networking. What a legend.
Thanks a lot!
he is my favourite
Taking an advanced undergraduate course in networking and you basically covered everything 1000x more clearly than the prof in 1/1000 of the time. Thank you so much!
You are absolutely the best teacher of networking.
Thank you for your comments!
From last 2 years the concepts was never clear to me....now you completely made me to understand ..
Thanks alot sunny.
This is the best explanation about NDP. LOVE U SUNNY. KEEP IT UP. u r genius
Great tutoria with great graphics. Finally I have managed to understand this, and it is even easy, when Sunny explains it.
compact, easy to understand, great supporting graphics. simply excellent !
You are the bomb Sunny! Thank you for this clear explanation and great visual example.
Thanks so much for providing this. Short and sweet.
Sunny you are a giant. Awesome vid
This video is better than the ccna course definition of it they define in the frame "special multicast addresses" now i know why computers don't have to "read" the frame that's because of the ff02::1 all-node multicast group addresses. Thanks a lot
finally someone with actual helpful information, thank you !
Very very good explanation , and very well presented . Keep posting such videos it was worth the time I spent watching this
Good explanation about neighbor discovery protocol that consist of two major things: getting IPv6 address for itself and getting neighbor MAC address to ensure it is still available, from multicast group. Also, some interesting thing about packet type that is determined by number.
thanks a lot for taking time to make comments and your synopsis.
Thank you Sunny it's very clear!
you are welcome.
Good job dude, what an awesome video. It is very clear to understand
Glad it helped!
Thank you, Sunny! This explained a lot!
You are a legend Sunny!! thanks so much!!
Nicely and clearly explained. Thank you very much.
You are welcome!
Excellent, concise video. Thank you.
Thank you for your nice comment. And you are welcome.
SUPER AWESOME EXPLANATION! SUPER SUNNY!
Thank you! 😃
Thanks for the video!
It was pretty helpful!
Sunny you are the best !!!
thanks, Rogelio!
great explanation and very simple
very clear and organized. thank you
my doubt is, in all that neighbor advertisemnt and discovery what is the role of the switch since switches are layer 2. or do we need special layer 3 switches?
very helpful. thank you so much
Thanks for the vid!
When you talk about link are you referring you data link layer or network? I thought NDP operates at the Network Layer.
thank you for your video !
You are welcome!
best explanations
Thank you. Its clearly understandable, have a small doubt, while A sending NS message to B how A already knows B`s solicited-node multicast
Amazing video sir. Bit confused with the node solicited multicast addresses in the NS portion. Node A FF02::1:FF23:B578 and node B FF02::1:FECD:34EE, where node solicited multicast address prefix FF02::1:FF00:0000/104. Thank you
Great, thanks! Can you also explain how ND is better than ARP?
Thanks sunny for clear explanation..
You are welcome!
It's the best video.... Amazing 👌
Thank you for your time!
What is the dest mac for Neigbour Solicitation. is it same as brodcast?
Excellent video, great explanation, only one doubt
You say ICMP works at link-layer, but I think it does at Internet layer, isn't it?
You are correct! I said it wrong if I really meant is layer 3.
@@sunnyclassroom24 I thought ICMP works at layer 4 and above
NDP is over icmpv6 ,why it is at link layer of OSI model ?
because layer 2 is local communications and NDP is a method to find your neighbors, which are sitting in your neighborhood. It is local. You don't look for your neighbor over the Internet which is layer 3.
@@sunnyclassroom24 if it is ipv4 ,the statement is correct,however in IPV6 the HW address resolving happens at layer 3 only,right ?
@@owenyang9543 Just like ARP, ARP use IPv4 to find MAC address (layer 2). Local communications occur at the data link layer.
Good video
thanks.
Sunny, can you post a video on IGMP.
I put it on my to do list. Thanks a lot for your encouragement.
Thanks for the greta video! Your explanation is easy to understand. But, it will be more interesting if you upload the tutorial of this ND implementation on real device. Do you have any plan to do that? I'm really looking forward for your reply ;)
How does host A knows the host b SNMA address??
Ikr?!!! That's what i don't understand as well.
do you know the answer?
thank you
Great information Thank you
Hi Sunny very informative stuff...
I have one question in the neighbor solicitation when Host-A sends a request for MAC Address to Host-B why does it not use the global unicast or link-local address of the Host-B. Why does it use solicit node multicast of B, any specific reason? Please explain.
Thank You.
I’m just learning IPV6 as well, so maybe I’m wrong about this, but here’s the reason:
Computer A and B are in the same local network, but they are not just connected directly to each other, they are connected through a switch. The ICMPV6 packages will be sent out as a level 2 (for example ethernet) broadcast, so they get sent to every computer on the local network. Because we are trying to find out the MAC address of computer B we cannot yet send a package directly to computer Bs MAC address. Likewise in the case that the 2 computers are connected by a level 3 switch, the message much be sent as a level 3 broadcast otherwise the level 3 switch will be forced to send the packet to all the local computers. That’s why it must use the node multicast address, so ensure that the packet gets sent to all local computers.
@@martinstent5339 all correct EXCEPT that multicast and not broadcast is the L2 transport.....IPv6 never uses L2 broadcast
So I really am trying to follow this, PLEASE HELP ME. I have found IPv6 Ethernet connections an f8oe or something random devices connecting to my WiFi and using ALOT of data?. I never looked before and I decided to log into my Comcast account today to see why the bill was weird. Turns out I’ve been being charged 100$ extra a month because we go over the data limit.. but idk HOW and I’m thinking.. does this basically mean one of my neighbors is a total A hole and is having me pay for data that they are secretly using? Or even worse is it possible they can go through my personal devices photos and videos and private stuff as well? Please please help and tell me HOW to stop this if that’s what’s happening. Please
So is NDP can be used to discover neighbours WiFi networks that you otherwise may not have access to?
lol no. By neighbor it means other ipv6 address the computer can see on the LOCAL network.
Great
Hi sir, thanks for that vidos
firstly. I have a question, when a host boots up, he sends message for all router using FF02::2, ok. My question is, for the host that want know the Neighbor in Neighbor Messagens, what adress they use FF02::2 or FF02::1, how that works ? Thanks for do a great job for
community with this videos.
IPv6 multicast addresses - FF02::1 is multcast to all nodes and FF02::2 to all routers on a network.
thanks
The best..
Thanks!
😍❤️
zenk yu for ze wiedeo our strom lehro uses your kanal every hour to explein
i just noticed that ur videos are really great but u need to get new microphone
Working on it!
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