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vlan segmentation

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oddyager

Diamond Member
I have 13 cat switches on the floor (I have about 450 or so workstations with a mix of Unix and Windows split between two floors) and all of them route through a 6513 (which will handle all layer 3 routing). My current plan is to make each switch its own VLAN (40 or so user nodes with some spare ports) but some dude is telling me that's too small and ideally just make each floor its own VLAN. Data Center is going to be on its own VLAN so that isn't an issue. How do you guys break yours up?
 
Best practice is for each wiring closet to be it's own layer2 broadcast domain - vlan.

I would NOT link other wiring closets with the same vlan. You run the risk of a bridging-loop, especially if fiber is involved. The entire idea is if you do have a bridging problem/spanning-tree problem it is contained to a small section like a single wiring closet.
 
Since I have pretty low user density, I break it up by building. 100- 200 IP addresses for each building has been plenty so far. I would say breaking it up on each switch may be a bit of overkill. After all, one of the reasons to VLAN off an area is to be able to better manage it. With so many VLAN's, you might not make it easier.
 
typically each floor / section will be it's own vlan. i have some that span multiple physical locales (ie wireless and voip) but for the most part they're segmented.
 
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