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In this article I want to share to you on how to create and configure vlan on Linux through Cisco Catalyst Switch.

Requirements:
1. Linux installed on a PC with one or more NICs (Network Interface Card). I use Centos 5.4 using 2.6.18-164.11.1.el5PAE kernel. It should be applicable on other Linux distros such as Slackware, Ubuntu, Fedora, Debian, etc.
2. Cisco Catalyst Switch 2950
3. 2 PC/Laptop running Windows/Linux/BSD/MacOSX
4. 3 straight cables

This tutorial is based-on network diagram below:

continue reading…

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You want to set to default configuration of cisco interface switches.
If you have a running cisco switch, often you have some configuration commands on each interfaces. Basically you can disable the command using the ‘no’ negation. If there is only one line or two, its ok but if there are more than that, it would take some times to disable one by one. continue reading…

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