Jeremy, I know that you probably get one of these every day, but I can't emphasize enough the importance of the work you are doing. Your free course has fundamentally changed the lives of so many people watching these videos, and now it has changed mine. I got my CCNA yesterday, thanks to the useful information in this and other videos of yours. In many ways, there is not a more noble task than creating equitable access to information, and you have done an excellent job. Please never forget that each one of these RUclips comments is an entire human being whose life has been radically and positively altered by you and your work. I owe you a beer if I'm ever in Japan.
Hey Sean, after getting your CCNA did it help you in your career? What options are there for someone who's got a year left in college? I really dont want to go helpdesk.
After watching multiple courses and reading CCNA books I can say with confidence this is probably the best content on ipv6 (I haven't watched the rest yet). Thank you for your hard work and for making this free!
@@JeremysITLab Which command automatically generates an IPv6 address from a specified IPv6 prefix and MAC address of an interface? is it ipv6 address 2001:DB8:5:112::/64 eui-64 or ipv6 address autoconfig
The unique local section here is remarkable. The issue over the 'FC/FD' prefix is that it's so convoluted and confused everywhere I look, Jeremy, you finally make sense of it! Most other courses say the prefix should be 'FC' but sometimes 'FD'. But Boson was on another planet it seemed, very confusing to me, one of its exam questions specifies it must only be 'FD.' I'm glad you made sense of it, how you mention there's an update from FC to FD because the 8th bit must now be set to '1.' Now it finally makes sense! These little details are why I love your content!
As someone who's very well versed in copywriting, sales and marketing, let me tell you Jeremy - putting this content out there for free is a huge way of giving value, and will absolutely bring you SO MANY customers for your paid content in the future. This course is the ultimate lead magnet.
I came for a seasonal job this summer, which is the last, but after that, I will turn to networking. Fingers crossed. Almost completed day 32 is going slower when you have a job but slowly getting there. The first 5 minutes where you have to practice the IPv6 For three of those, I didn't even have to write down the addresses, and all were correct. Usually, on my days off, I mostly study; my biggest aim is the CCNA. By the start of June, I will also have BosonEx Sim. I wish good luck to everyone. Thanks Jeremy.
multicast scopes: ff01 - 1nterface 10ca1 ff02 - Link Local: (2 L's) ff05 - 5ite local ff08 - organisEIGHTion local ff0E - global: FF0mE (F0mE means hunger, a GLOBAL problem)
I always put like whenever i finish the video( that's my way of saying thank you) as I have tons of study I don't have time to write comments sorry for that .. but now that I truly know how much effort you put into making these slides , teaching us with the best way ever all for free ! i want to say thank you so much , it's really appreciated with all of my heart
You are an incredibly talented teacher Jeremy! You have a great gift in simplifying matters. I looked over explanations in other places, and none of them were as spoon-fed as yours.
Wow, that was a lot of information. I'm happy to say I did well on the quiz at the end but I will certainly be revisiting this periodically. I can't help but feel that by learning this information, that I am getting ahead of other people who don't want to put the effort in to learn the new technology. I felt that the Wikipedia diagram (the one that visually expressed Unicast, Broadcast, Multicast, Anycast) was very helpful in bringing all of the concepts together. Another solid video Jeremy, there was a lot of information to cover here and I'm glad you prepared us for that at the beginning of the video. It helped me get into the right headspace to take in the details. With that being said I had to break it up into segments and take notes as necessary so I was not overwhelmed. Maybe other people will benefit from doing this too if they read my comment. Cheers! 👋
Thanks Mezy, I appreciate the effort you put into your comments! Always glad to read them :) The Wikipedia diagram is great, isn't it? Wikipedia is actually a great study resource. Although it never goes in depth to be a complete resource for any topic, it's been very helpful as I prepare these videos. Keep it up! Sounds like you're rocking your studies.
Hi Jermey! You are the best. I have learnt many tutorial's but never understand the IPV6 before this video. You really did a hard work for such contents. Wish you all the best for CCNP full course as well.
so grateful to Jeremy great job i have already completed a course through a college that provides free certification paths .... i booked the exam completing all the requirement and have completed Measure up practice exam realised i will go through Jermey's as second resource... and i was absolutely right alot of concepts that much clearer and in simple plain logic is amazinggg i already extend my exam date and willing to complete the course i am now almost half way in 2 weeks time and willing to complete before my attempt i might extend it a week more to get Boson netsim practiced as well.....best of luck to all in pursue !!! i am in the IT Field from quite long i must say yearss just started to complete few certificates recently done Network + ISC Cyber and had few MS on my belt.....hope this will change alot....Thanks again to Jermeys great work!!!!!!
Jeremy i really like ur way of explanation and i need to pass that exam as soon as possible we need more videos please, and i dont want to go anywhere else to study CCNA i hope u can find more time to make more videos !!!
14:20 for extra clarification the standard states that the first 10 bits MUST be 1111 1110 10 and the following 54 bits are all 0's, meaning the network prefix will always be FE80:0000:0000:0000:xxxx:xxxx:xxxx:xxxx This is from what I understand.
The whole idea of IP addressing as it looked to me was to use logical L3 addresses as opposite to factory burned-in L2 addresses which had no logic from networking perspective. It worked fine in IPv4. In IPv6 we turn down that idea and simply copy L2s into L3s. This means that IPv6 network planning will be much harder, won't it? and logic is no longer on our side.
Link local IPv6 start with FE8 but you said the Link local multicast uses link-local and you use the FF01 range. Thank you for you video, you explained it incredibly.
Thank you for all your great videos. I have a request when you manage your time could you please make videos about how to put all these skills in a resume or how to make a resume as a fresher
@@talalakbarlaghari Same situation here I mean I was hoping for february. I have started few weeks ago I was hoping that for the end of february I'll be able to take my ccna exam.
@5:38 regarding router generating EUI-64 address for an interface, does the router use the MAC address of the switch it's connected to? Why wouldn't the router see all MAC addresses of all devices connected to the switch?
When we learned about Local Area Networks and Subnets, the technical definition of a LAN referenced a "broadcast domain". Now in IPv6 I wonder if the definition of LAN changes.
You really need to study a lot, because it's not just theoretical, it's about understanding how the flow of information on the network is managed, who accesses it, when, where, what, there are several parameters.
Thanks, sir, for all your effort. I'm really glad I found your channel on RUclips. I was a bit confused when I looked into how 54 bits after FE80 should all be zero(ref 14:23), so I tried to break it down. I might be wrong, but here’s what I understood: From FE80::/10, the first 10 bits remain the same. Breaking down FE80 into bits, we get: 1111 1110 1000 0000. Here, the first 10 bits (1111 1110 10) are fixed. The next 6 bits (000000) plus the next 48 bits should be all zero, totaling 54 bits. So, informally, I can say after the first 16 bits (FE80), the following 48 bits are all zero, and that gives us FE80::/64. Please correct me if I'm wrong.
whoa. this is making me sweat just thinking about how im going to memorize all of this lol and Im still sticking to my idea that they made things ultra confusing on purpose lol case and point, the "inverted 7th bit".. I love how the U/L bit is reversed pertaining to eui-64, because EFF YOU thats why! lol dont mind me Jeremy, just venting :)
Thanks, Jeremy May Allah bless you for this effort and for making it possible for us to study CCNA. Can you please help to know the what is the value FFFE that is inserted into the MAC address in this vidios?
1. GNS3 is free, but you need to purchase the IOS software to use in GNS3 (you can purchase Cisco CML to get the IOS files) 2. Recently EVE-NG is more popular, but I like GNS3. I don't know which is 'best'.
on linux, you can view those addresses with cat /etc/hosts. the output will be something like this: # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters
for the eui 64 interface identifier exercise, how was 782B CBAC 0867 converted to 7"A"2B? where did the A come from if you're supposed to invert the 7th bit? I got a 1 in place of the A
Currently studying for CCNA with this course! Thank you for these awesome videos! I need a bit of help here: I am confused about why in the cli for the EUI64 of the ipv6 address displays an E. According to my calculations When inverting the 7th bit - C in this case - 1101 should be 1111 after inversion which should be F and the address then fully written would be: 2001:DB8::FF8:22FF:FE36:8500 - im sure i've missed something, but cant seem to see what.
@Jeremy What is the use of locally administered mac addresses? (except for using it for virtual machines) any other use for LAA ? If for routing and network purpose, then why can't we use the actual physical address ?
Hi Jeremy! Can't understand for example 30:53 quiz 1, yes, we can drop the leading 0 's but can leave them. Why C option is not correct but D is correct without 0 followed by F2A? I think both are correct. Thank you for the course!
A Great explanation from a great person ,thank you very much... please mr. When we will finish this course ? ...also ... are you planning to provide CCNP complete course?
Hell, Jeremy, thanks alot for your marvelous CCNA course, you make it very easy. I‘m from Germany and intend to take the exam next month, but I could not find the videos for Day 33 and the following Days, and I need afew topics like access lists, WAN, WLan, security, VPN,......I ould appreciate it if you could help me. Again thank alot for your help.
Is a Link local Ipv6 for a router kind of like directly connected from Ipv4? That's kind of how I just remembered it for a router and why it cannot route it(also how it knows how to send it to the next hop link local,; it's directly connected...)
Thanks so much Jeremy, but I have a question please : Global unicast addresses are public addresses so why admin will create subnet as normally we need subnet for local network not for external network could you please explain this point?
Recently discovered your channel and very impressed by the flow and commitment to creating some quality materials! Many thanks for putting this out there. But two questions: 1. Since you probably have a recording schedule put out well in advance of release dates, is there a way to gain access to your viddys as soon as they're created? Maybe as a subscriber bonus or something? 2. Would you consider doing some lecture/review on WLAN/WLC topics? I actually got steered this way by the algorithm from NetworkBruh. I know it's only mentioned on a few of the 2.0 CCNA exam objectives, but a lot of that stuff looks like Greek to us out here. Thanks for reading!
1. I usually have 4 or 5 videos made beforehand, and in fact I do release them ahead of time on Teachable. Check it out here: jeremysitlab.teachable.com/ 2. Yep, I will cover all of the CCNA exam topics!
In one of the Boson ExSim questions, it was mentioned that "The seventh binary bit is then set to 0 (hexadecimal 00) if the IPv6 address is locally unique, or set to 1 (hexadecimal 02) if the address is globally unique". I was under the impression that for EUI-64, we need to flip the 7th bit always. But this is something new. I did not find this info in any of the video courses or textbooks too. Any thoughts on this?
That explanation by Boson is a bit controversial (it's been brought up multiple times on Reddit). Boson's interpretation of RFC 2373 is different than mine.
Link local addresses are unicast addresses, they are used to send a message to a specific device. Multilcast addresses are used to send messages to multiple devices (or one device, if only one device is 'listening' to that multicast address).
hello abit confused @ 5:04 how does 782B CBFF FEAC 0867 translate to 7A2B CBFF FEAC 0867 ? doesn't the conversion happen on the 8? which is binary 1000 therefore i flip the seventh bit to zero to 1 ? kindly assist thanks
what's the difference between unique local and link-local? I just know both of them can't be routed over internet and be used internally, but what circumstances do we should use unique local or link-local?
Link local addresses are valid only on the local link, for direct communications between the connected devices. Unique local addresses are like regular IP addresses, they just can't be sent over the Internet.
@ Syarif Hidayat : Unique local IPs are like Private IPv4 addresses - not routable over internet but routable within subnet / LAN @ Jeremy: Please correct me if required.
Hi Jeremy, Using a link-local scope multicast address (ff02) how can, for example, ALL OSPF ROUTERS be reached with destination ff02::5 if link-local itsef cant leave local subnet? Thanks
come on guys please like the videos when you watch them, these videos are amazing and it free, a simple click on the like button will be awesome. Jeremy you're awesome person. we need more of you in the world.
Jeremy in your video 4:19 '1' is your 7th bit, but when i calculate the binary octets from 1-2 ( 1000 : 0100 ) i have 0 in the 7th place? what am i missing?
1000 0100 is hexadecimal 84. Hexadecimal 12 converted to binary is 0001 0010, so the 7th bit is 1. Try reviewing the binary to hex conversion process! Seems you’re mixing it up at some point in the process.
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
I'm proud to say that I am now more than halfway! to whoever else is studying, hang in there and we'll all get this through together!
We should make a support group hahaha
Trueee 😂. Now if i look back it wasn't all that difficult. Good luck you all out there
It's not difficult but it's a lot of material to study and remember
@@eugenesiyakhula5678 Aye, this is about the point where I'm feeling overwhelmed by the amount to memorize.
@@eugenesiyakhula5678 Did you got it?
Jeremy,
I know that you probably get one of these every day, but I can't emphasize enough the importance of the work you are doing. Your free course has fundamentally changed the lives of so many people watching these videos, and now it has changed mine. I got my CCNA yesterday, thanks to the useful information in this and other videos of yours.
In many ways, there is not a more noble task than creating equitable access to information, and you have done an excellent job. Please never forget that each one of these RUclips comments is an entire human being whose life has been radically and positively altered by you and your work.
I owe you a beer if I'm ever in Japan.
Hey Sean, after getting your CCNA did it help you in your career? What options are there for someone who's got a year left in college? I really dont want to go helpdesk.
After watching multiple courses and reading CCNA books I can say with confidence this is probably the best content on ipv6 (I haven't watched the rest yet). Thank you for your hard work and for making this free!
Thanks, glad you like it!
@@JeremysITLab Which command automatically generates an IPv6 address from a specified IPv6 prefix and MAC address of an interface? is it ipv6 address 2001:DB8:5:112::/64 eui-64 or ipv6 address autoconfig
The unique local section here is remarkable. The issue over the 'FC/FD' prefix is that it's so convoluted and confused everywhere I look, Jeremy, you finally make sense of it! Most other courses say the prefix should be 'FC' but sometimes 'FD'. But Boson was on another planet it seemed, very confusing to me, one of its exam questions specifies it must only be 'FD.' I'm glad you made sense of it, how you mention there's an update from FC to FD because the 8th bit must now be set to '1.' Now it finally makes sense! These little details are why I love your content!
As someone who's very well versed in copywriting, sales and marketing, let me tell you Jeremy - putting this content out there for free is a huge way of giving value, and will absolutely bring you SO MANY customers for your paid content in the future.
This course is the ultimate lead magnet.
Thanks Billy, I hope so! Free content will always be the focus but I definitely want to expand my paid content too ;)
@@JeremysITLab great job just bought ur course !
I can say for myself that I'm definitely going to buy and use his practice exams before I go for Boson ExSim at the very least.
I came for a seasonal job this summer, which is the last, but after that, I will turn to networking. Fingers crossed.
Almost completed day 32 is going slower when you have a job but slowly getting there.
The first 5 minutes where you have to practice the IPv6 For three of those, I didn't even have to write down the addresses, and all were correct.
Usually, on my days off, I mostly study; my biggest aim is the CCNA.
By the start of June, I will also have BosonEx Sim.
I wish good luck to everyone.
Thanks Jeremy.
Hey hows it going? Have you passed the CCNA?
@scientiest12 no I haven't, I'm working on it :) thank you for asking
@@AggelosDRZ how about now?
multicast scopes:
ff01 - 1nterface 10ca1
ff02 - Link Local: (2 L's)
ff05 - 5ite local
ff08 - organisEIGHTion local
ff0E - global: FF0mE (F0mE means hunger, a GLOBAL problem)
This was fire, thank you!!!!
I always put like whenever i finish the video( that's my way of saying thank you)
as I have tons of study I don't have time to write comments sorry for that ..
but now that I truly know how much effort you put into making these slides , teaching us with the best way ever all for free !
i want to say thank you so much , it's really appreciated with all of my heart
Thanks Fatima, I appreciate the likes ;)
You are an incredibly talented teacher Jeremy! You have a great gift in simplifying matters. I looked over explanations in other places, and none of them were as spoon-fed as yours.
Wow, that was heavy (o o)'
God bless you for the flashcards!!
Wow, that was a lot of information. I'm happy to say I did well on the quiz at the end but I will certainly be revisiting this periodically. I can't help but feel that by learning this information, that I am getting ahead of other people who don't want to put the effort in to learn the new technology. I felt that the Wikipedia diagram (the one that visually expressed Unicast, Broadcast, Multicast, Anycast) was very helpful in bringing all of the concepts together.
Another solid video Jeremy, there was a lot of information to cover here and I'm glad you prepared us for that at the beginning of the video. It helped me get into the right headspace to take in the details. With that being said I had to break it up into segments and take notes as necessary so I was not overwhelmed. Maybe other people will benefit from doing this too if they read my comment.
Cheers! 👋
Thanks Mezy, I appreciate the effort you put into your comments! Always glad to read them :)
The Wikipedia diagram is great, isn't it? Wikipedia is actually a great study resource. Although it never goes in depth to be a complete resource for any topic, it's been very helpful as I prepare these videos.
Keep it up! Sounds like you're rocking your studies.
Thank you very much, this is Day 32 and I still keep going further, without your miracle course, It could never have been possible. Thank you.
Jeremy, I swear ur voice somehow can fully make me concentred and I am really learning knowledge of it. Thank u so much.
Hi Jermey! You are the best. I have learnt many tutorial's but never understand the IPV6 before this video. You really did a hard work for such contents. Wish you all the best for CCNP full course as well.
so grateful to Jeremy great job i have already completed a course through a college that provides free certification paths .... i booked the exam completing all the requirement and have completed Measure up practice exam realised i will go through Jermey's as second resource... and i was absolutely right alot of concepts that much clearer and in simple plain logic is amazinggg i already extend my exam date and willing to complete the course i am now almost half way in 2 weeks time and willing to complete before my attempt i might extend it a week more to get Boson netsim practiced as well.....best of luck to all in pursue !!! i am in the IT Field from quite long i must say yearss just started to complete few certificates recently done Network + ISC Cyber and had few MS on my belt.....hope this will change alot....Thanks again to Jermeys great work!!!!!!
Jeremy i really like ur way of explanation and i need to pass that exam as soon as possible we need more videos please, and i dont want to go anywhere else to study CCNA i hope u can find more time to make more videos !!!
Thank you Mohamad!
tnx mr jeremy keep the work man you changing people live by sharing these video for real man more than any tipe of content on youtube.
Thank you :)
The best teacher on RUclips millions of thanks mister Jeremy
Thanks Zakaria :)
14:20 for extra clarification the standard states that the first 10 bits MUST be 1111 1110 10 and the following 54 bits are all 0's, meaning the network prefix will always be FE80:0000:0000:0000:xxxx:xxxx:xxxx:xxxx
This is from what I understand.
when something starts clicking, it gets me super excited. Thank you Jeremy!!!!!
Thank you Jeremy for your immense dedication to complete the course, you really have heart of gold
Thank you Pahuldeep :)
Thanks for explaining why it's necessary to convert the 7th bit !! :D
this is youtube in its best form. So good content, thx for making it free.
May Allah bless you Jeremy .
You are making this journey a piece of cake .
Thank you Muhaned, I'm glad my videos are helpful :)
You made all IPv6 types very easy to understand for me within less than 30 minutes. Thank you so much
Thanks, I'm glad to hear that :)
Voy por la mitad del curso y me ha parecido fantástico, muchas gracias por tu dedicación. ENHORABUENA!
Thank you! :)
This is so good, like listening to Sir David Attenborough expaining the law of natural, half way there, lets go!!!
Thanks Jimmy! :)
the best CCNA course online.
Thank you :)
Sir Jeremy your videos are amazing. Now my lot of ipv6 concepts have been super cleared. Thanks for your efforts.
Eagerly waiting for the newly added content in CCNA 200-301 ,
thanks a lot jeremy hope you will upload those soon.
I will upload a new video every week!
30:44 I believe both B and D are correct for quiz 1 because we don't know the mac address and the 7th bit could be flipped to create C2A from E2A
The MAC address is 0D2A.4FA3.00B1
Just joined JCNP. So glad i found your course. CCNA booked in for late February!
I could feel my brain frying like an egg while watching this. But if any course is going to make ipv6 make sense, so far I'd say yours will.
Take it slow and feel free to google around if there are some points you don't understand!
Thanks Jeremy. You are fantastic in teaching. Superb. God bless you and your family.
Thank you Sanjay :)
thank you very much. learning with your videos make it so much easier. you are a great teacher. i have being recommending your videos to every one .
Great lecture, but I have one question. Why invert the 7th bit?
many thanks to Jeremy for your wonderful work, it does make ipv6 much easier
We must atleast like and subscriber to thank Jeremy for the intelligent and hardwork he has done
Amazing videos...lot of love to the trainer...
Nice explanation Jeremy, you cover all details for CCNA, thanks again.
Thank you :)
I am very grateful for your work, Jeremy. I reinforce each topic with your videos.
Thanks, glad to hear it :)
The whole idea of IP addressing as it looked to me was to use logical L3 addresses as opposite to factory burned-in L2 addresses which had no logic from networking perspective. It worked fine in IPv4. In IPv6 we turn down that idea and simply copy L2s into L3s. This means that IPv6 network planning will be much harder, won't it? and logic is no longer on our side.
Both you and David Bombal make this networking thing enjoyable.Thank you for an amazing learning experience! Hoping you'll make a CCNP course lol.
Thanks, CCNP is definitely coming in the future!
@@JeremysITLab i am also hoping for the ccnp course to come soom
Link local IPv6 start with FE8 but you said the Link local multicast uses link-local and you use the FF01 range.
Thank you for you video, you explained it incredibly.
Thank you for all your great videos. I have a request when you manage your time could you please make videos about how to put all these skills in a resume or how to make a resume as a fresher
Perhaps after I finish my CCNA course I'll make videos like that!
Thanks.
Excellent work Jeremy ! Any idea when you will post last video in this series.
Thanks! It will be sometime next year.
Thanks
What % of course content is covered ? As I have to look for alternative sources to complete
But I really love your videos.
@@talalakbarlaghari Same situation here I mean I was hoping for february. I have started few weeks ago I was hoping that for the end of february I'll be able to take my ccna exam.
@5:38 regarding router generating EUI-64 address for an interface, does the router use the MAC address of the switch it's connected to? Why wouldn't the router see all MAC addresses of all devices connected to the switch?
It uses the MAC address of its own interface to generate the EUI-64 address
Thanks so much jeremy! You are the best!
Thanks Youssef ;)
When we learned about Local Area Networks and Subnets, the technical definition of a LAN referenced a "broadcast domain". Now in IPv6 I wonder if the definition of LAN changes.
EUI-64 has finally clicked me in under 4 minutes thanks Jeremy
You really need to study a lot, because it's not just theoretical, it's about understanding how the flow of information on the network is managed, who accesses it, when, where, what, there are several parameters.
Thank you so much.please can you make a video about subnetting ipv6 ?
Thanks, sir, for all your effort. I'm really glad I found your channel on RUclips. I was a bit confused when I looked into how 54 bits after FE80 should all be zero(ref 14:23), so I tried to break it down. I might be wrong, but here’s what I understood:
From FE80::/10, the first 10 bits remain the same. Breaking down FE80 into bits, we get: 1111 1110 1000 0000. Here, the first 10 bits (1111 1110 10) are fixed. The next 6 bits (000000) plus the next 48 bits should be all zero, totaling 54 bits.
So, informally, I can say after the first 16 bits (FE80), the following 48 bits are all zero, and that gives us FE80::/64.
Please correct me if I'm wrong.
when he said the next 54 bits he means the next bit and so on after /10 not from FE80. I also got a bit confused at that part.
Incredible course! Been learning a lot from this series! Thank you Jeremy!
whoa. this is making me sweat just thinking about how im going to memorize all of this lol and Im still sticking to my idea that they made things ultra confusing on purpose lol case and point, the "inverted 7th bit".. I love how the U/L bit is reversed pertaining to eui-64, because EFF YOU thats why! lol dont mind me Jeremy, just venting :)
Haha, I'm sure there are reasons but they can be hard to infer sometimes!
thank you jeremy for your priceless effort
Thank you for your comment :)
Thanks, Jeremy May Allah bless you for this effort and for making it possible for us to study CCNA.
Can you please help to know the what is the value FFFE that is inserted into the MAC address in this vidios?
Are you going to be making any videos on ACLs. Awesome videos for CCNA so far!
Yep, I will cover all CCNA exam topics.
Hello Jeremy.
How many more videos are you planning to upload?
Thank you very much. Your videos are awesome and very easy to understand.
I think the course will be about 50 days in total.
@@JeremysITLab Vey nice indeed. Thanks again and keep up the fantastic work! :)
@@JeremysITLab And this whole information in 50 videos is only for passing CCNA?!?!
I think they should give American citizenship as well as the certificate for so much knowledge.
Thank you jeremy
I have two questions
1.Using GNS3 on cisco lap is it free
2.is GNS3 the best of all
Thank you
1. GNS3 is free, but you need to purchase the IOS software to use in GNS3 (you can purchase Cisco CML to get the IOS files)
2. Recently EVE-NG is more popular, but I like GNS3. I don't know which is 'best'.
@@JeremysITLab thank you jeremy
🙏🙏🙏🙏
Hey Jeremy, for practice question one, if we were inverting the 7th bit for D(13), wouldn't it actually be C(12)? I'm lost at how you got to F(15).
0D = 0 0 0 0 1 1 0 1
Flip the seventh bit:
0 0 0 0 1 1 1 1 = 0F
on linux, you can view those addresses with cat /etc/hosts. the output will be something like this:
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
A very clear and concise presentation as always.
Minute : 4:50 first example, why did you change it to 7A2B, Shouldn't be 702B?
Thank you for your effort.
@@JeremysITLab Thank you for replying. I missed that.
Your lesson was to easy understand!
very thanks.
Thanks! I'm glad :)
Thanks a lot Jeremy your videos are really helpful!
for the eui 64 interface identifier exercise, how was 782B CBAC 0867 converted to 7"A"2B? where did the A come from if you're supposed to invert the 7th bit? I got a 1 in place of the A
78 = 0100 1000
Invert the 7th bit = 0100 1010
= 7A
@@JeremysITLab ahhhh.. I see I see. Thank you Jeremy!
Currently studying for CCNA with this course! Thank you for these awesome videos! I need a bit of help here: I am confused about why in the cli for the EUI64 of the ipv6 address displays an E. According to my calculations When inverting the 7th bit - C in this case - 1101 should be 1111 after inversion which should be F and the address then fully written would be: 2001:DB8::FF8:22FF:FE36:8500 - im sure i've missed something, but cant seem to see what.
C is 12 in decimal - 1100 in binary
@Jeremy
What is the use of locally administered mac addresses? (except for using it for virtual machines) any other use for LAA ?
If for routing and network purpose, then why can't we use the actual physical address ?
How is FF02 a link local scope that doesn't leave the subnet but is also used to multicast to other routers?
Hi Jeremy! Can't understand for example 30:53 quiz 1, yes, we can drop the leading 0 's but can leave them. Why C option is not correct but D is correct without 0 followed by F2A? I think both are correct. Thank you for the course!
In option C, 'FFFF' is inserted in the middle of the MAC address to make the interface ID. It should be 'FFFE', like in option D.
@@JeremysITLab Thank you, my bad, didnt noticed
A Great explanation from a great person ,thank you very much... please mr. When we will finish this course ? ...also ... are you planning to provide CCNP complete course?
I'll finish the course next year, and yes I plan to do CCNP after.
@@JeremysITLab Awesome!
Thank you so much for your commitment finish this course.
Thanks Omar, I'll definitely finish it ;)
@@JeremysITLab I'm sure you will do it...I hope all the best for you..
Hell, Jeremy, thanks alot for your marvelous CCNA course, you make it very easy. I‘m from Germany and intend to take the exam next month, but I could not find the videos for Day 33 and the following Days, and I need afew topics like access lists, WAN, WLan, security, VPN,......I ould appreciate it if you could help me. Again thank alot for your help.
Hello, I will continue to upload a new video every week.
Jeremy's IT Lab Thanks a lot, I’m looking forward to watch next videos, could you tell me , when will the next be.
Is a Link local Ipv6 for a router kind of like directly connected from Ipv4? That's kind of how I just remembered it for a router and why it cannot route it(also how it knows how to send it to the next hop link local,; it's directly connected...)
IPv6 link local is like...IPv4 link local! Link local addresses are in IPv4 too, they are addresses that begin with 169.254
@@JeremysITLab This is the moment I slap my hand to my forehead lolz!!!
とてもきれいなヴィデオです。
best in the game! thank you jeremy!
Thanks so much Jeremy, but I have a question please :
Global unicast addresses are public addresses so why admin will create subnet as normally we need subnet for local network not for external network
could you please explain this point?
Very good class Jeremy! Thank you
The unique local address could also be configure with EUI 64 ?
Yep, no problem!
Hi jeremy , Thank you very much for your wonderful contribution !
Thank you for watching :)
Thank you for your hardwork
The best one Nd only. Thanks Mr Jeremy
Recently discovered your channel and very impressed by the flow and commitment to creating some quality materials! Many thanks for putting this out there. But two questions:
1. Since you probably have a recording schedule put out well in advance of release dates, is there a way to gain access to your viddys as soon as they're created? Maybe as a subscriber bonus or something?
2. Would you consider doing some lecture/review on WLAN/WLC topics? I actually got steered this way by the algorithm from NetworkBruh. I know it's only mentioned on a few of the 2.0 CCNA exam objectives, but a lot of that stuff looks like Greek to us out here.
Thanks for reading!
1. I usually have 4 or 5 videos made beforehand, and in fact I do release them ahead of time on Teachable. Check it out here: jeremysitlab.teachable.com/
2. Yep, I will cover all of the CCNA exam topics!
Great as usually , thank you Jeremy :)
Thanks Samir :)
Thank you Jeremy
Thanks Umair :)
Thank u Jeremy💖
Thanks for watching :)
Thanks for the video Jeremy!
Thanks for watching :)
In one of the Boson ExSim questions, it was mentioned that "The seventh binary bit is then set to 0 (hexadecimal 00) if the IPv6 address is
locally unique, or set to 1 (hexadecimal 02) if the address is globally unique".
I was under the impression that for EUI-64, we need to flip the 7th bit always. But this is something new. I did not find this info in any of the video courses or textbooks too.
Any thoughts on this?
That explanation by Boson is a bit controversial (it's been brought up multiple times on Reddit). Boson's interpretation of RFC 2373 is different than mine.
@@JeremysITLab Thanks Jeremy, So if a similar question pops up in exam,how should I answer it?
@@udayesh0709 I think you should always flip the 7th bit.
I just confused between the link local address that start by FE80 and the Multicast link local that start with FF02
Link local addresses are unicast addresses, they are used to send a message to a specific device. Multilcast addresses are used to send messages to multiple devices (or one device, if only one device is 'listening' to that multicast address).
hello abit confused @ 5:04 how does 782B CBFF FEAC 0867 translate to 7A2B CBFF FEAC 0867 ? doesn't the conversion happen on the 8? which is binary 1000 therefore i flip the seventh bit to zero to 1 ? kindly assist thanks
Exactly, I flipped the seventh bit to 1 so the 8 became A.
78 = 0111 1000
flip the seventh bit: 0111 1010 = 7A
Thank you, this was made a bit more clear for me!
Thanks, glad to hear that :)
Very informative thanks for the video time to do a lot of active recall though
what's the difference between unique local and link-local? I just know both of them can't be routed over internet and be used internally, but what circumstances do we should use unique local or link-local?
Link local addresses are valid only on the local link, for direct communications between the connected devices. Unique local addresses are like regular IP addresses, they just can't be sent over the Internet.
@ Syarif Hidayat
: Unique local IPs are like Private IPv4 addresses - not routable over internet but routable within subnet / LAN
@ Jeremy: Please correct me if required.
Hi Jeremy,
Using a link-local scope multicast address (ff02) how can, for example, ALL OSPF ROUTERS be reached with destination ff02::5 if link-local itsef cant leave local subnet? Thanks
'All OSPF routers' means all OSPF routers on the local link
come on guys please like the videos when you watch them, these videos are amazing and it free, a simple click on the like button will be awesome. Jeremy you're awesome person. we need more of you in the world.
Thank you, I appreciate it :)
Hello, does someone knows in which video where multicast addresses explained for IPv4?
Hey Jeremy, after ipv6 topic what is your next step?
ACLs
Hi Jeremy, Thank you for the great lectures. Could you please tell me if EUI-64 can be applicable for any prefix length or only for /64 ?
EUI-64 creates a 64-bit host identifier (hence the 64 in the name), so the prefix length must be 64 bits too to make a total of 128.
@@JeremysITLabThank you!!
Jeremy in your video 4:19 '1' is your 7th bit, but when i calculate the binary octets from 1-2 ( 1000 : 0100 ) i have 0 in the 7th place? what am i missing?
1000 0100 is hexadecimal 84.
Hexadecimal 12 converted to binary is 0001 0010, so the 7th bit is 1.
Try reviewing the binary to hex conversion process! Seems you’re mixing it up at some point in the process.
@@JeremysITLab THANKS!!!!