Tell me more ×
IT Security Stack Exchange is a question and answer site for IT security professionals. It's 100% free, no registration required.
up vote 0 down vote favorite

I am designing my network to improve security and want to implement Vlans. My problem is that we already have a network 192.168.16.0/24 and have a lot of devices on this network already. From theory, I read that each Vlan has to be a different subnet and then I need to configure virtual interfaces on my Cisco router to cater for inter vlan routing.

1)How can I segment this network with minimum down time on the devices already on the network?

2)Can I just create Vlans and leave all these Vlans in the same laye 3 network so that they can go out of the network (I am not not concerned about Vlan routing) or I have to create subnets which means reconfiguring the existing devices (something I do not want)

share|improve this question

closed as off topic by Terry Chia, Polynomial, Jeff Ferland♦ Sep 20 '12 at 15:59

Questions on IT Security Stack Exchange are expected to relate to IT security within the scope defined in the FAQ. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about closed questions here.

Browse other questions tagged or ask your own question.