Day8 - Explanation of how Mac/IP addresses change when the packet's cross various devices

Hello Everyone,

So the topic on how our packet's encapsulate and de/re- encapsulates L2 and L3 headers always confuses me. It wasn't until the last blog post, where I asked myself that question and then asked the reddit/r/ccna community, where I actually got a really solid answer! Please be sure to watch my explanation and also check out the Micro CBT Nugget (the source of my learnings). I look forward to moving on with more labs!

And here is the video from the source!

Day7 - Short trip down memory lane

Hello Everyone!

No labs today, but just a short story. Also I have some complaints and questions when it comes to the exams. But here it is!

Day6 - ACL and NAT/PAT

Hello Everyone!

Day 6 video is all about creating an ACL to filter our NAT/PAT requests. I did try to do this a few times, and finally got NAT to work with ACL! I'm trying out some new IP scheme that's more friendly to what I'm doing. Also initially, I tried doing this lab without any study materials. However, I ended up forgetting that during NAT, you have to assign ports for inside and outside. So lesson learned! Here goes today's video!

Day 5 - Project DHCP server and DHCP relay

Hello Everyone!

Today's project revolves around a quick DHCP server setup on our router. From there, I looked into what would happen and how do I obtain DHCP IP releases if I'm not directly connected to the router with DHCP server setup. This is quiet an interesting and also common case i the real world. Please watch the video and let me know what you guys think of this quick project. Perhaps in the future, I will expand this topic to the IPv6 world.

Day4 - Ipv6 dualstacked with IPv4, Routing IPv6 with EIGRP

Hello Everyone, today is an exciting day. I am wrapping the IPv6 Dual Stacking over IPv4 Setup series. Well, I did run into a bit a trouble when I was setting up IPv6 on the routers. I guess I should of checked to make sure that the router I was using in Cisco packet tracer supports IPv6. It turns out that it did not! So what did I do? well, I had no choice but to start from a new set of routers and reconfigure them for IPv6.

It's a blessing in disguise really, because it gave me another opportunity to go over some configuration on the fly. Because I don't plan my recordings and configurations ahead of time, instead I do them on the fly, scenarios like that will occur fairly often. Also scenarios like this happens in the real world as well. Anyways. here goes the final set of videos!

Day3- Video 2: IPv6 Subnetting

Okay, this is definitely not my strong suit. Looks like I need to spend a little bit more time in trying to explain the conversions between Hex, and Deci and Binary. I'll most likely do another re-take on IPv6 subnetting in the very near future.

Day3 - Video 1 about Rip and No Auto Summary

Day 3 started awesome!

This video is about Rip v2 and a little information on No Auto Summary command. I've actually been done with this video for quiet a while.

We're moving onto IPv6 next, and the subnetting is giving me a very hard time in explanation. In fact, it's so difficult that I've re-recorded the explanation video twice. I will have the video up soon, hopefully.

For now, the conclusion of my IPv4 setup.

Day2 Video 2! This video quickly covers the topics we discussed previously, which is vlan/trunk setup. I also gone ahead and discussed the process of setting up router on a stick. Interestingly enough, I did not know that once subinterfaces are setup, the router will actually route packets between the vlans. I double checked the certification guide, and the official answer is as follows:

"Now that the router has a working interface, with IPv4 addresses configured, the router can route IPv4 packets on these subinterfaces. That is, the router treats these subinterfaces like any physical interface in term of adding connected routes, matching those routes and forwarding packets to/from those connected subnets" - Pg 442, Official Cert Guide, CCNA/CCENT ICND1 100-101

Okay, so after typing that out, it makes much more sense that once subterfaces are in, we can ping cross vlans!

Here goes Day2-1 video, Thanks for stopping by!

Day 2! I had quiet a bit of time to think over what I was doing yesterday, and I wanted to improve the quality and speed in which I'm making these videos. I think it's best if I try to talk about each small concept and practice video within 20 minute range. Leaving some room for questions/and ideas in the last 10 minutes. So hoping to keep each feature videos 30 minutes tops!

I ran into an issue in video 2 as you can see. While using the show interface trunk command, if your physical layer is down or the layer 2 is down. The command will respond with no answer. This was a bit troubling, but I guess it's one of the things to remember during the actual exam or out on the real world. I included a few minutes of me troubleshooting this issue, hopefully everyone doesn't get bored.

This was a real good reflection on troubleshooting techniques. You should always remember to look down the layers, making sure each protocol and it's supporting layers are working before examining the issue up the chain. In this case, my physical connections were no set, and my l2 protocol was offline. Which I guess IOS knew, and decided to tell me that if there are no connections, it won't form trunking. Well lesson learned!

Coming up, router on a stick, sub-interfaces quick video!

Here we go! Had some trouble using the correct recording software, and I had to do multiple takes. But hopefully this covers the basics!

Hello and welcome to my personal journal on the topics of basic networking. Through this series of journals I hope to record my learning and experimentation/practices towards the Cisco Certification ICND1, and eventually towards CCNA (which is what you get once you have completed both ICND1 and ICND2).

Let the journey begin...