Blocking subnets on Catalyst

[Paul.Lane]

I have 3 [200,201,202] subnets all plugged into a 4507 catalyst. Is it possible for me to block subnet 202 from accessing 200 and 201? The subnets are all running Microsoft software.

Any help would be appreciated.

Thanks,

Paul Lane

[owillins]

From what I understand, you do not want the clients on subnet 202 to access information from 200 and 201. You can achieve this using VLANs. The VLANs will not communicate with each other unless a L3 device is configured for InterVLAN routing.