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Showing posts from July, 2015

Simple BASH programming tutorials using Fedora 22

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In Bash programming, all the user written scripts has to be run using some commands infront of the script name if the script execute permission  is not set to the user and also the path of the script should be in the $PATH global variable. There fore before executing the scripts i'm going to set these path variable and change the user permission. For this i will get the below mentioned script name as an example. To change the Permission chmod u+x oddeven To change the Path PATH=$PATH:/home/<User>/<directory path containing the script>  Now will look at some of the programs and there outputs. So the first Image will be the Script and the second will be the output of it. Script 1: Script 2: Script 3: Script 4: This is the text file which used by the Script 4 to change directories.(filelist.txt)

Dynamic Routing Demonstration Using CISCO PACKET TRACER and RIP

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Dynamic routing is all about configuring a network using dynamic routing protocols. Dynamic Routing Protocol is divided in to two main parts. 1.Interior Gateway Protocol 2.Exterior Gateway Protocol In this section will look at Interior Gateway Protocols. -this is an autonomous system and handled by only one admin. -this protocol is also divide into two parts, 1. Distant Vector Protocols(Bellman-Ford Algorithm) - distance is measured by `hop count` and use for simple networks 2. Link State Protocol(Dijkstra Algorithm) - this uses some other information like neighbour router info and this is best for complex network designs In this Scenario we are using Routing Information Protocol(RIP) as the dynamic routing protocol. So below mentioned diagram is the network plan for a small network. In this Network diagram,            192.168.10.0 , 192.168.30.0 , 192.168.20.0 , 10.0.0.0 , 11.0.0.0 are 5 different networks.            Router 1, Route