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Question about VLAN Implementation


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#1 WorxSec

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Posted 27 March 2012 - 11:01 AM

Just wanted to get a few answers in regards to VLAN implementation (thinking about doing this for a large network)...VLAN's always sound good on paper, but how hard/easy are they to implement to a live and running network?

How many of you -
1.) Have successfully implemented VLAN's into a production environment (e.g. placed servers, production, printers, etc. on separate VLAN's)?
2.) How much of a pain is it to do this? If you are on a 192.168.1.x subnet, do you have to re-IP all of your printers, switches, etc. This sounds like a lot of work – especially since re-IP’ing domain controllers is a royal pain.
3.) Have you seen much of a performance increase when implementing VLAN’s (i.e. chatty protocols and broadcasts?)
4.) Any other Cisco VLAN advice would be useful

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#2 cryptodan

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Posted 27 March 2012 - 11:31 AM

First question is this the following: 192.168.1.0/24 gives you 253 useable IP's, and you want to set up vlans. You need to determine how many VLANS will encompass your network, and take the appropriate steps. You need a router with routing tables set up to accommodate the required VLANs so that each VLAN Can communicate with each other.

You will need to adjust your gateways on the VLAN connected devices.




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