From: Patrick Murphy (pjm@xxxxxxxxxxxxxxxxx)
Date: Thu Jan 25 2001 - 02:41:28 GMT-3
You need some type of encapsulation such as ISL to create sub-interfaces. It
also needs to be 100 MB.
----- Original Message -----
From: "Harbir Kohli" <harbirk@sympatico.ca>
To: "'Ccielab" <ccielab@groupstudy.com>
Sent: Wednesday, January 24, 2001 4:52 PM
Subject: subif on Ethernet
> Hello,
>
> When I try to assign an IP address to a subinterface I get the following
> error:
> R1(config-if)#int e0.1
> R1(config-subif)#ip add
> R1(config-subif)#ip address 150.10.10.1 255.255.255.0
>
> Configuring IP routing on a LAN subinterface is only allowed if that
> subinterface is already configured as part of an IEEE 802.10 or ISL
> vLAN.
>
> Why?
> I tried 11.2.17, 11.2.23, and 12.0.5, all give the same error.
>
> I know that I have created subinterfaces in the past but what version, I
> don't remember what IOS version that was under.
>
> Is there a workaround?
>
> Also to create an ISL interface do you need fast ethernet ? or can you
> do it with plain 10baseT? How do you do it?
>
> Thanks
>
> harbir
>
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