Ah, yes, another lost soul in G-L3 land.
My 2948G-L3 is, indeed, at the core. Quite a useful multilayer model
device. I like it.
You can divide your class B into those 8 subnets, assign a BVI to each, and
then attach whatever ports to that bridge-group that you need. Nice for
servers back 'at the office'. There are, of course, lots of ways to set-up
and embellish. My needs were simple, so far.
Couple of items. Don't expect ACLs. Don't think that, on the 2948 at
least, the secondary gig port runs at line speed with both interfaces
pumping to different segments. Do 'think like a switched vlan' more than
'router centric'. The docs are minimal. We/I need a 'G-L3' group.
One more tidbit. "Cisco LAN Switching" (good book, read it *before* you
need to) does address flat VLAN structure quite a bit, but, in the last
third, you will read about how much easier it is to *manage* multilayer.
Very true, in my environs.
Best, G.
-----Original Message-----
From: NetEng [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, November 01, 2000 3:47 PM
To: [EMAIL PROTECTED]
Subject: Segments, Switches, and Routers
If I have 2 segments each connecting to a Catalyst 5000 (via GBIC fiber) in
the core, do I need a router? The more I think about this, the more confused
I get. Should I put in a couple of 4908G-L3 in the core? I guess I don't
understand when I have to and when I don't have to use a router when
connecting seperate subnets through (or using) a layer 3 switch. I
understand what a layer 3 switch is, but I am confused on when I really need
to use one. If I was to subnet a class B address in to 8 subnets, would I
use a layer 3 switch, like a 4908G-L3 or a bunch of routers? I thought in a
proper Cisco design, layer3 activities should be done at the distibution
layer and not in the backbone. Thanks for thoughts and posts.
--2948G-L3-----[192.168.100.x]--------CAT5000
(core)--------[192.168.200.x]------2948G-L3--
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