Re: [nsp] Inter-subnet switching on Catalyst switches

From: Aaron Monfils (amonfils@kissane.com)
Date: Fri Jan 23 1998 - 18:30:09 EST


You need a 4xxx or 7xxx with a FastEthernet or ATM interface that
understands ISL. You will need a router no matter what you do. Remember
that we route at layer 3 and switch at layer 2. IP Networks reside are at
Layer 3.

The link to the router will become an ISL trunk, carrying VLANs 200 and 204
(assuming that you use the third octet of the IP Address as a VLAN number).

At 03:54 PM 1/23/98 -0500, you wrote:
>Hi,
> this is probably a fairly basic question for some people used with
>switching but I'm having a lot of trouble on finding documentation
>answering my questions.
> Anyways here's my question. We're looking at implementing a
>Catalyst switch on our LAN and create VLANs. However, there are two
>subnets on that network we'd like to put on the switch (let's say network
>192.9.200.0 and 192.9.204.0) since we'd like to avoid readdressing. How
>can I route between these two subnets?
>Will the Catalyst be able to do that for me? Or do I have to use a
>separate router.
> If it's not available right now, when should it be?
>
>Thank you very much,
>
>Pierre-Etienne Chartier
>
>
>>+=+=+=+=+=+=+=+=+=+=+=++=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+==+=<
>> If there was an information revolution, it's over: <
>> information won. <
>> -Diana Lady Dougan <
>>--------------------------------------------------------------------<
>>Pierre-Etienne Chartier <
>>Systems Analyst, Logibro, inc. <
>>+=+=+=+=+=+=+=+=+=+=+=+=++=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+<
>
>
>
Aaron Monfils
Network Engineer
Kissane Business Systems
amonfils@kissane.com
http://www.kissane.com/



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