From: Gary Bartlett (ciscokid@sympatico.ca)
Date: Wed Oct 01 2003 - 10:58:10 GMT-3
hi Group,
I have a client that has 3 switches configured as a flat network (all
ports are in vlan1), all devices are web servers & they have 5 class C
address spaces, 2 of the switches are 3550's and 1 is a 1900. They would
like to better organize there network layout & think that each server
should be put into there own VLAN... I'm well versed in routing, but I
think I'm missing something when it comes to switching... To my
understanding, if layer 3 switching is enabled on the cat 3550s, the
layer 3 switches should be able to resolve the routing locally, & not
have to forward the packets to the router to route between VLANS.
The cat1900 is connected to one of the 3550s, so if each port is put
into its own vlan, it would forward the request to the 3550 (will the
3550 tell the 1900 to route between VLANS?)
I'm also not sure if this is a very good design? The client wants to
decrease the impact of broadcast storms because of a virus they got a
while ago.
So I would have to configure a trunk between the 3 switches (No problem)
but another question lies on how traffic will be forwarded to the router
out to the internet... The router is a 2501 with an Ethernet interface
connecting to one of the switches, I'm not sure how a server connected
to one of the switches would forward its traffic to the router in
another vlan, is that done with a default route?
& if so, what about if the router is connected to switchA, and a server
on switchB needed to get to the router, I don't know how this would
work, would a default route be needed on this switch as well?
any help would be appreciated
Thanks
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