[cisco-voip] might be a little OT about switches

Walenta, Phil philip.walenta at berbee.com
Tue May 31 13:35:07 EDT 2005


My preference has always been layer 3 where possible.  RSTP is a good
protocol, but IMHO routing protocols are still better. 

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Voll, Scott
Sent: Tuesday, May 31, 2005 12:33 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] might be a little OT about switches

We are moving from a PBX to Cisco IPT little by little.  Each year's
budget gets us a little closer.  This year's budget I'm hoping to
replace our current switches with PoE switches, most likely 3560's.

Currently I have a 3550 12g as my LAN Core (distribution Layer)  which
star topo's to 4 IDFs.  Since I want some redundancy I'm trying do
decide on weather to go strictly layer 2 at the IDFs or maybe a layer 3
switch at the top with layer 2 switches below.  If I don't put in Layer
3 I'm stuck with spanning tree but if I put layer 3 in, I can use OSPF
from the 3550 to the IDF and spanning tree in the closet only.

Can anyone give me some pro's and con's as to why to go one way or the
other?  Other then $$$

Thanks

Scott


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