I'm Keith Barker, a 2x CCIE (Cisco Certified Internetwork Expert).
I'm here for you if you are:
👉 New to IT and don't know where to start 👉Currently in IT, and want to learn more advanced ideas 👉 Anyone who wants to learn about the basics of technology in general
I believe that anyone can improve their situation by gaining new skills, including those in information technology.
thank you this videos really helped me , i am stuck in something i was trying to ping from my pc to the vm interface i am not able to do that can you help me in part
Hi Keith, I just wanted to express my deep appreciation for the incredible videos you put together and made freely accessible to everyone. For me, these labs are invaluable as they reveal weak spots in my skills and memory in a very practicable way. Keep up the great work. :)
With my WD SN570 it just makes contact with the thinner thermal pad. I'll see how it goes. I might add the second thin pad. The thick one is thicker than the two thin ones combined. For people with double sided NVMEs, you might find a thin pad between the drive and the PCB makes contact there too. With my single sided NVME drive, none of the pads were quite the right thickness to do that and it's not really necessary. So I'd say it's a bit fiddly, but following the Sabrent video and pictures, or this video, makes it easier than trying to do other odd things with the components. The instructions in the box though aren't great, so I can understand why some people did odd things!
Hey Keith! Great content. When I am creating a virtual disk the only write option I have is “write though” instead of “write back” on your video. Does this matter?
Why no one talks about the multicast MAC address? I had to search several sites to understand how the NDP works at layer 2. Everything sounds great at layer 3, but a normal switch will only forward frames, what is it supposed to do with an IPv6 packet destined to a solicited node multicast IPv6 address?
Hi, may I please ask why Wireshark shows the ARP request's Target MAC Address as 00:00:00:00:00:00 when we're actually broadcasting to FF:F:FF:FF:FF:FF? (Video Time - 7:30)
Great question. In the payload of the ARP request, the device sending the request doesn't yet know the target's MAC address. That is why the target is set (in the payload of the ARP request) to all 0s. The destination in the Layer 2 header is the L2 broadcast of all 1s (Hex all Fs). Hope that helps, and happy studies. :)
I whole heartedly agree Keith. I got my CCNA and my ISP not only uses Cisco but also Alcatel and Fortigate for the data center. So now I'm learning Nokia and going for the NRS1 certification. Had to put off renewing my JNCIA as we don't do Juniper at my level.
Hi Keith, thank you very much for this awesome video! In the description of your network topology at 1:36, you decide to use a fortalink but why does it require two ports on the firewall and also two ports on the switch? Couldn't you have used simply an ethernet/sfp cable to connect between the firewall and the switch? The same goes for the connections between Switch 1 and Switch 2.
My ADHD makes study for these exams at the last minute, within two weeks. I repeat the same process each year. I already did it with CCNA, three years in a row that I study in depth within the last two weeks and never complete any of the study materials I invested in. I retake the exam for the third time this week and I failed again for the third time studying consistently for a year. The time blindness hits me hard and I continue to time warp the entire year without looking at my CCNA books, labs, and practice exams. Luckily, I had free vouchers for the last three years, each year from my job. But I will have to take it for the fourth time out of my pocket. Although I did manage to pass the A+ and Network+ cramming for the last two weeks, but with CCNA it is impossible.
Just passed my CCNA on the second attempt today. If I had found your videos first I doubt I would've failed the first time! Subnet Saturdays helped me sooooo much. Your teaching style is great, thanks a lot!
I came to this video almost 2 years later and still found it useful, but I find that If I already know the DDN for a CIDR notated subnet, I minus 255 from that value - so for /28 I would do 255-240 = 15 IDK Just figured I'd share in case anyone like me still finds this video.
Can i also say it's like someone walking to their destination where they could be kidnapped, robbed, or murdered. But then you buy that person a vehicle so that they can arrive at their destination safely?
I did it also included some ip filtering with ACL and dns by name and ip helper for new computer on Vlan 20. Thank you Keith. You’re my inspiration man
Keith, so glad i have found your tutorials, you are such a cool trainer ... love your work, analogies and information. Have already had discussions with my friends and forwarded your channel to them. thanks for your efforts.
Keith, just want to say how much I appreciate you going the extra mile so we can physically see how you are performing a task. Racking a server may seem simple but many people have not done it, and like many things in IT, there's maybe 1-2 ways to do it right and about 1000 ways to do it wrong. Thanks for taking the time to teach all aspects of IT.
Jeremy's IT lab is grate I watched it before I found your channel, but there is a huge difference between the way you teach and him And that's the level of energy and joy you give away while teaching
This video should be added to the CBT Nuggets CCNP and CCNA curriculum. I've read up and watched several videos on VXLAN/Spine/Leaf and somewhat understood the topic, but five minutes into this video a light bulb went off. I do have a recommendation; when you make labs like this, please provide the command list. I like to follow along by doing rather than watching. Excellent work again Keith, thank you sir.
