From: Chuck Larrieu (chuck@xxxxxxxxxxxxx)
Date: Wed Jan 24 2001 - 22:37:30 GMT-3
According to the Cisco IOS feature navigator, found at www.cisco.com/tac
(requires CCO login)
ISL is available an a slew of IOS versions dating back to 11.2(15)
11.2(15) supported ISL on the 4500,7200 and 7500 platforms
12,1(6) supports ISL on 2600 3620 3640 3660 4500 5300 5rsm 7100 7200 7500
8850 ubr7200
according to this same source.
i.e even though a 17xx router has 10/100 interfaces, it cannot do ISL VLAN.
HTH
Chuck
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Patrick Murphy
Sent: Wednesday, January 24, 2001 9:41 PM
To: Harbir Kohli; 'Ccielab
Subject: Re: subif on Ethernet
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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