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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Getting Started - I

We can start off our campaign by configuring a small LAN network. We will configure a cisco switch that is connected to end user device and eventually forward traffic to a router with connects our LAN with outside network/ Internet. In our scenario, the configuration will be done on the switch, here we are going to divide the whole process into six stages: 1) Beginning: start up new switch/ wipe out existing configs. 2) Security: passwords & banner. 3) Cosmetics: name & work environment. 4) Management: IP address & gateway. 5) Interfaces: speed, duplex & description. 6) Verify & backup: CDP, TFTP, show interfaces. BEGINNING Very few of us will be born with the silver spoon to have a brand new switch to start off the proceedings, for other not so lucky comrades like me, before we can start any configuration we need to make sure that previous configuration do not effect what we are about to do. At boot up of a brand new switch, it always prompts with a qu...

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 ...

VLANs and Trunks – I

Its the first major topic of our Cisco switch world. Well to start of let me tell you one secret, if you are using a managed switch, you are using VLANs, so its not that alien of a topic. Yes its true even if you have not came across setting up VLANs while configuring your networks (using managed switches), you are using VLAN, as its default “VLAN 1” every port of a managed switch belongs to VLAN 1 by default. So what is VLAN, lets start with a brief discussion of what switches do; Well they are the Layer 2 (OSI) device and divide collision domain on per port basis i.e. each port of a switch is a separate collision domain. But by default it does not divide the broadcast domain. To have separate broadcast domains we need a layer 3 device like a router. But there is a mechanism to divide broadcast domain at layer 2, and that mechanism is referred as VLANs. VLANs logically group users by segmenting broadcast domain. As per Cisco, VLANs = Broadcast Domain = Subnet End nodes on a giv...

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