Configuring fa1/0 on a router - Basic!!

[JulianLeach2021]

Am doing some beginner labwork and am stumped on something that has to be really simple.....hasnt it!

I can configure ip addresses in router port f0/0 & 0/1 not a problem using the following series of commands

However when I try to do exactly the same for fa 1/0 I get this

The ‘?’ help menus at the route of the ‘int’ config are different too

Then on this interface

Why is this?   Banging my head against this for a while now

This is what my network looks like -

[paul driver]

Hello

Looks like that interface is a Layer 2 interface at present, try the following:

int fa1/0
no switchport

[Giuseppe Larosa · Accepted solution]

Hello Julian,

the fa1/0 is part of an etherswitch module and so it behaves like a L2 switch port ( note the switchport command)

You may have two options:

a)

int fas1/0

! the following command changes the port to a routed port

no switchport

ip address .......

b)  USe an SVI

interface vlan 1

ip address x.x.x.x 255.255.255.0

no shut

int fas1/0

switchport

switchport mode access

One of the two methods should work

Hope to help

Giuseppe

[JulianLeach2021]

Hi Paul

Thanks for the reply.   Though that would be it however can you comment futher?

I have completed as the solution

However i have this now as output.  I must be missing something!!!

Router>en

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#int fas 1/0

Router(config-if)#no sw

Router(config-if)#no switchport

% Incomplete command.

Router(config-if)#

Really very much appreciate your help and already happy that i know the interface can be configured!!

Cheers

Julian

[Giuseppe Larosa]

Hello Julian,

if no switchport does not work you need to use an SVI interface VLAN where you put the IP address that is option b) in my previous answer.

Be aware that Vlan 1 is default.

If you use VLAN x

then you need

inteface fas1/0

switchport

switchport mode access

switchport access vlan x

Hope to help

Giuseppe

[JulianLeach2021]

Thanks ever so much for your help. Is there a reason why the 'no
switchport' command does not work?

Thanks again

[paul driver · Accepted solution]

Hello

it may be a pure l2 interface as such you would need to create a L3 vlan SVI interface as suggest by Giuseppe and assign the vlan to that interface.