We have been set the task of securing a small managed office system which is currently set up with a standard switch allowing each of the offices (containing different companies) to see each other, and in some cases, access each others documents across the network. Obviously this is a far from adequate set up and our aim is to isolate each office using VLAN's but share a common internet connection provided by the managed offices.  We have two Cisco SGE2000-G5 layer 3 switches but we are new to Cisco equipment and VLAN's so we are not quite sure on how to implement this.  DHCP would need to be provided by a Router, there is no Server.  We are open to suggestions on the Router as we have yet to purchase one. I hope someone can be of assistance. Many thanks, Jim ... View more