How do I isolate the LAN or in other words I'm running 2 DHCP server one is releasing 192.168.168.x and other one is 10.10.10.x - the users on both network log on to a one DC.What i'm trying to that no user from 10.10.10.x LAN should not be able to see the computers on LAN 192.168.168.xthanks in advance.

Vministrator, The safest way to do this is to take away the route. Even if the two networks are vconnected to the same network router, that router has to have an entry (either static or dynamic) to say that "to get to 10.10.10.x use..." or "to get to 192.168.168.x use ...". If you take this network route away, there will be no possible way for the two networks to talk. However, this will not work out well, if you have other (other than the 10.10.10.x and 192.168.168.x) networks that need to get to either of these subnets. If that is the case a router ACL stating that 10.10.10.x to 192.168.168.x is denied, and 192.168.168.x to 10.10.10.x is denied. Hope this helps. Let us know if you have any further questions. If you need extra help, you can reach us at: InitialAssist@cbfive.com See my blogs at http://www.cbfive.com/blog / Jared

Let me check with my cisco guys.

Hi,How's everything going?If you need any further assistance, please feel free to respond back.Thanks.This posting is provided "AS IS" with no warranties, and confers no rights.