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sounds like what you've got is a collapsed
core. the core being the backplane of the 5000 and the distribution being
the 5000 ports participating in vlan. You will need to use layer 3 anytime
one segment needs to communicate with another, this can be done with either a L3
sw or a router...really accomplishes the same thing.
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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