This is the first in what I hope to be a useful series on configuration/walk through videos aimed at educating up-and-coming networking professionals on some of the more fundamental concepts.
Today we’ll be looking at static routing and how to configure it in a small Cisco network. Below are the lab files (GNS3) and the videos themselves.
Download the Lab Outline
Download the GNS3 Lab used in this video
Since it’s a new Youtube channel, I’m limited to 15 minutes per clip, and therefore had to break it into two parts.
I’m pleased to announce a new feature on the site. I’m going to start publishing some articles on more fundamental concepts in networking in the form of video walk throughs / labs. I wanted to free up the main blog feed for some more advanced topics, and a lot more of an overall network design discussion, as well as the occasional fun stuff. Several people have approached me in the past about making something like this that would help beginners learn the fundamentals, and at the time I wasn’t able to, but I feel like I’m able to do them now.
This is the first in what I hope to be a useful series on configuration/walk through videos aimed at educating up-and-coming networking professionals on some of the more fundamental concepts.
Today we’ll be looking at static routing and how to configure it in a small Cisco network. Below are the lab files (GNS3) and the videos themselves.
Download the Lab Outline
Download the GNS3 Lab used in this video
Since it’s a new Youtube channel, I’m limited to 15 minutes per clip, and therefore had to break it into two parts.
I’m pleased to announce a new feature on the site. I’m going to start publishing some articles on more fundamental concepts in networking in the form of video walk throughs / labs. I wanted to free up the main blog feed for some more advanced topics, and a lot more of an overall network design discussion, as well as the occasional fun stuff. Several people have approached me in the past about making something like this that would help beginners learn the fundamentals, and at the time I wasn’t able to, but I feel like I’m able to do them now.
The television and video game industry are just absolutely RIDDLED with terrible attempts at referencing technology. Typically, these scenes will try to delve into some sort of computer-like concept, often related to computer networking, to try to improve the modernity of the content.
Before you say anything, I did pull a bit of inspiration from this Cracked article, but there are a few I’ve encountered on my own. I hope you enjoy!
The television and video game industry are just absolutely RIDDLED with terrible attempts at referencing technology. Typically, these scenes will try to delve into some sort of computer-like concept, often related to computer networking, to try to improve the modernity of the content.
Before you say anything, I did pull a bit of inspiration from this Cracked article, but there are a few I’ve encountered on my own. I hope you enjoy!
Over the past few years, I’ve made some observations about the people I’ve worked and communicated with. Some of these people were colleagues, others acquaintances, and still others were simply bloggers that I look up to. I’m talking specifically of those people that are in my field of Network Engineering, and they all share a few traits in common. I’ve deemed a few of these traits to be important things to remember when trying to make yourself a better network engineer, and a better IT professional in general.
Over the past few years, I’ve made some observations about the people I’ve worked and communicated with. Some of these people were colleagues, others acquaintances, and still others were simply bloggers that I look up to. I’m talking specifically of those people that are in my field of Network Engineering, and they all share a few traits in common. I’ve deemed a few of these traits to be important things to remember when trying to make yourself a better network engineer, and a better IT professional in general.
A recent and relatively quiet IOS release allows the Catalyst 2960 platform to perform limited Layer 3 Switching (See this thread and this blog post). There are limitations - for instance, it cannot run any sort of routing protocol, so routing must be done statically. Up to 16 static routes can be entered, and routing is limited to SVI’s (maximum of 8), as the platform is not able to route to or from a physical interface, like you’re able to do with most layer 3 switches.
A recent and relatively quiet IOS release allows the Catalyst 2960 platform to perform limited Layer 3 Switching (See this thread and this blog post). There are limitations - for instance, it cannot run any sort of routing protocol, so routing must be done statically. Up to 16 static routes can be entered, and routing is limited to SVI’s (maximum of 8), as the platform is not able to route to or from a physical interface, like you’re able to do with most layer 3 switches.
Link state routing protocols maintain topology tables to determine the best candidate to place in the routing table. EIGRP is no different - it uses this topology table to build a vision of the network from the perspective of each participating router. This topology table is reviewed by the routing algorithm (in the case of EIGRP, it is DUAL) and decisions are made regarding what gets placed into the routing table.
Link state routing protocols maintain topology tables to determine the best candidate to place in the routing table. EIGRP is no different - it uses this topology table to build a vision of the network from the perspective of each participating router. This topology table is reviewed by the routing algorithm (in the case of EIGRP, it is DUAL) and decisions are made regarding what gets placed into the routing table.
One of the most important skills to have when it comes to basic networking is the ability to look at a routing table and determine exactly where a packet will be routed when it comes to a router. Sometimes a routing table is relatively simple, and this process is easy. However, many times this is not the case. In large networks, especially networks that implement a hub and spoke design where core routers are often required to know hundreds of routes or more, this can be tedious.
One of the most important skills to have when it comes to basic networking is the ability to look at a routing table and determine exactly where a packet will be routed when it comes to a router. Sometimes a routing table is relatively simple, and this process is easy. However, many times this is not the case. In large networks, especially networks that implement a hub and spoke design where core routers are often required to know hundreds of routes or more, this can be tedious.
At the end of my Senior Design sequence, a professor asked if I had time to look into IPv6 Mobility. At the time, I had to tell him no, since it was considered to be out of scope for the project. It’s a shame really - the concept of IP Mobility in general is extremely fascinating.
I’d like to point out that IP Mobility is well-documented technology - and I’d rather not spend a lot of time explaining it, since I’m sure there are articles out there that do a much better job.
At the end of my Senior Design sequence, a professor asked if I had time to look into IPv6 Mobility. At the time, I had to tell him no, since it was considered to be out of scope for the project. It’s a shame really - the concept of IP Mobility in general is extremely fascinating.
I’d like to point out that IP Mobility is well-documented technology - and I’d rather not spend a lot of time explaining it, since I’m sure there are articles out there that do a much better job.
We’ve all heard about tools like Darik’s Boot and Nuke for performing secure hard drive wipes suitable for even the most paranoid.
However, in a pinch, there’s an alternative that often goes overlooked, but is able to erase data at a level comparable to all the usual standards like DoD (or even the incredibly obnoxious 35-pass Guttmann method)
The ‘shred’ utility exists on nearly every popular Linux live CD/DVD and can be executed in a live environment to do the job when it’s all you have.
We’ve all heard about tools like Darik’s Boot and Nuke for performing secure hard drive wipes suitable for even the most paranoid.
However, in a pinch, there’s an alternative that often goes overlooked, but is able to erase data at a level comparable to all the usual standards like DoD (or even the incredibly obnoxious 35-pass Guttmann method)
The ‘shred’ utility exists on nearly every popular Linux live CD/DVD and can be executed in a live environment to do the job when it’s all you have.
Ah - I can finally breathe a sigh of relief, for I am finally done with my Senior Design sequence, as well as my undergraduate education. I’ve been feeling a little out of place, actually, since I’ve been in research mode for the last 9 months for my IPv6 project. So, after a short break, I decided to get back into things that I was just getting started with before all of that started.
Ah - I can finally breathe a sigh of relief, for I am finally done with my Senior Design sequence, as well as my undergraduate education. I’ve been feeling a little out of place, actually, since I’ve been in research mode for the last 9 months for my IPv6 project. So, after a short break, I decided to get back into things that I was just getting started with before all of that started.