Re: using ip unnumbmberred on fast ethernet interface

Hi Amin,

This can't be done on 'physical' Ethernet interfaces, however you can do it
with subinterfaces (:

First test with physical but it won't work:

TST(config-if)#interface Loopback0
TST(config-if)#ip address 10.20.30.40 255.255.255.255

TST(config-if)#int gig0/0
TST(config-if)#ip unnumbered lo0
Point-to-point (non-multi-access) interfaces only

But with subinterfaces we succeed:

TST(config)#interface GigabitEthernet0/0.11
TST(config-subif)#encapsulation dot1Q 11
TST(config-subif)#ip unnumbered Loopback0

TST(config)#do sh ip int br | ex un
Interface IP-Address OK? Method Status
 Protocol
GigabitEthernet0/0.11 10.20.30.40 YES TFTP up
 down
Loopback0 10.20.30.40 YES manual up
 up

HTH

Thanks,
Steve Di Bias- CCIE #32840

On Mon, Feb 25, 2013 at 10:46 AM, amin <amin_at_axizo.com> wrote:

> Hello dear,
>
> How I can use IP unnumbered on fast Ethernet interface?
>
>
>
> Regards,
>
> Amin
>
>
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Received on Mon Feb 25 2013 - 11:46:36 ART