A much needed Intro

Hi all,
am just one of those million computer geeks out there that do happen to blog randomly about Cisco and Linux world. I started of this blog to brush up my knowledge and also thought it might be a bit of help for some stranded surfer who do eventually happen to end up reading this blog.
I've taken of most of my previous posts in an urge to revamp this blog and give it a new structure.
I will try to coverup some of the basics of networking or rather Cisco network ing with the perspective for CCNA.

Location:Winter Ave,Stratford,United Kingdom

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What is this mystical network!

There is a lot written about networks but most of the times when it comes to Basic questions like "What is a network?"(in regards to information technology), most of us will end up saying "A group of different devices that can intercommunicate in an intelligent manner (of-course you may find some that can only give you a shrug,like me)". When I asked myself all I got were random images of pcs and boxes connected via lines, bolts and clouds. Actually what we should concentrate on is what the network does instead of what the network really is? I still remember asking my high school teacher about this cloud. All I was told was that it's Internet: network of networks. Most of us will be pretty satisfied with the above definition of network but read it again, it tells us about what network is made of, and not what network exactly is. Let's take an example from the latest movie I watched, Shrek: the far away kingdom, where King stamps a letter and give ...

Cisco: Resetting Forgotten Password

I was actually made to write this blog after I end up buying a password protected Cisco 2500 router from Ebay. My room mate collected it and straight away tried to connect it to HyperTerminal as he wanted to test his newly learnt skills from CCNA classes. But more to his disappointment, the router was password protected and it was not until evening when I returned home after work. If you do end up in a similar situation, before you start have your snacks, roll up your sleeves and be prepared for a good 3-4 hrs of command line drill. Alright.. my bad.. it won’t take this long, it’s actually easier than it looks and can only take a max of 2 minutes if you got all the right stuffs with you. And here is how we do it in easy steps: 1) Connect to your router via console. 2) Power reset the Router. 3) When the router boots again, Press "Ctrl + Break” or “Ctrl +Pause”(Hyper-terminal/Putty). Pause/Break is actually the same key. And make sure to do this with in within 60 sec. And if ...

Virtualization

The word "Virtualization" on its own, is too wide to discuss. But to cut it short, its a process of making one thing look like another. For our purposes we are referring to the ability of a computer to be split into multiple parts where the parts are (relatively) indistinguishable from the whole. For example, running different Linux environment on a single machine. Virtualization is often posed as a tool to over ride accustomed practice to having dedicated environments for each application, due to this one application per server deployment model, the majority of systems are grossly under-utilised like CPU utilization below 10% is normal. By virtualizing the physical hardware so that many “servers” can run simultaneously on the same physical machine we can drive utilisation much higher, to 50% or more. Hope it help!

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