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Re: subif on Ethernet posted 01/25/2001
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Need a fastethernet interface to do subinterface and isl.

  Kevin

At 07:52 PM 1/24/01 -0500, Harbir Kohli wrote:
>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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