Cisco 3550 48 Port SMI

Unanswered Question
May 22nd, 2008
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Hi guys.

I am very new to the world of Cisco CLI but not networking in general and have been in networking for many years and i am a Network Administrator. Anyway I have a switch in work that i am now playing with and going to use to learn off.

So i have a Cisco 3550 48 Port SMI switch and i have run the following command to set it back to defaults

write erase

I now need to set the routers IP Address , SubNet Mask , Default gateway so that it can been seen on my LAN.

I have been hunting around trying to find the command but no joy. I do remember doing this a couple of years ago and it was something like set ip or ip address

Can anyone help me with the commands.

Many thanks


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Martin Parry Thu, 05/22/2008 - 23:24
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Hi Craig

By default all of your interfaces will be in vlan 1, so easiest thing for you to do would be the following.

conf t

int vlan 1

ip address (Assuming you are running with a /24 subnet)

no shut



If you are planning to telnet to the switch once you have configured it with an IP, then you will need to do the following.

conf t

username craig password

enable secret


line vty 0 4

login local


line vty 5 15

login local



I would recommend you not using vlan 1 for security reasons, but this will get you up and running and allow you to get onto the switch remotely to configure it.

Hope this helps


glen.grant Fri, 05/23/2008 - 03:26
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You can make the subnet any vlan you want . First create the layer 2 vlan .

conf t

ip routing

vlan 3,enter


interface vlan 3

ip address

no shut


interface range f0/1 - 48

switchport access vlan 3

srue Fri, 05/23/2008 - 04:24
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to set the default gateway (if routing is not enabled and in use):

ip default-gateway x.x.x.x


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