In a Layer2 network it is critical that a logical loop-free topology is established before data could be switched through the network. The first step within this process is to determine a root bridge – the root of the spanning-tree. Within a Layer2 network it becomes very important to keep the topology scalable and predictable – it… Continue reading

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I still remember, quite some time back, I used to find the concept of classless vs. classful routing, quite dificult to understand. To enable/disable classless routing, we can use the command [no] ip classless. So, ip classless – enables classless routing; no ip classless, enables classfull routing. Furthermore, classless routing is enabled by default and unless you are running an… Continue reading

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As per my current setup, illustrated here, I have since introduced a few more Powerline adapters in order to connect my rooms upstairs to the whole network. I needed to do this in order to connect the Nintendo Wii, two more TVs and the Popcorn media player. Though to my surprise, I started running into all sort of… Continue reading

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In quite a few instances I found myself in a situation where, for troubleshooting & traffic flow analysis purposes, I just wanted to get a capture of the traffic going over a specific link or between specific networks. There is few ways I could think of to achieve this: Configure SPAN (on switches, for L2… Continue reading

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