Convert switchport to a L3 port similar to a router

ngthen · ‎07-10-2009

I have a 3550-24-SMI switch that I need to have specific interfaces act like interfaces on a router. Can I disable the L2 featues and turn it into an L3 only interface and assign an IP address directly to it?

Giuseppe Larosa · ‎07-10-2009

Hello Nicholas,

if you had an enterprise image EMI the answer would be yes 100%.

More modern switches with base image can support intervlan routing but miss support of advanced routing protocols.

SMI in 3550 should be able to be a multilayer switch.

try the following:

int f0/x

no switchport

ip address x.x.x.x y.y.y.y

no shut

if it accepts this and you can reach a device on the other end of the port you are fine

Hope to help

Giuseppe

Leo Laohoo · ‎07-10-2009

It's been a loooooooooooooong night but you may need the "ip routing enable" first.