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routing on a switch

How do I make my switch a router, do I just enable ip routing, then apply an ip address to an interface, and use the no switchport command to make the interface layer 3, Also can I use routing protocols on the switch like rip. eigrp etc ?

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Re: routing on a switch

Hi Carl,

It all depends on which switch you are having , it should be a layer 3 switch. For example if you have 3550 switch then you just need to enable "ip routing" and the create logical interfaces for vlans like interface vlan 2 and so on and assign an ip address to them and once you connect the devices to these vlans like workstation these logical interfaces which are layer 3 interfaces will come up and it will start routing between different vlans.

Also if you want any physical port to work as layer 3 port you can give a command "no switchport" and assign an ip address to it.

You can run routing protocols on layer 3 switches depending upon the switches like 3550 SMI version only supports rip and igrp but 3550 EMI version supports all routing protocol like rip, eigrp , ospf and BGP as well.

Remember switches like 2950,1900,2900xl and 3500xl are layer 2 switches and cannot be used as layer 3 switches.

HTH

Ankur

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