Hi Martin, >We are migrating from Lucent QIP to MetaIP for DHCP services and so >far we have had two issues when MetaIP has been implemented for VLAN >that has an unauthorized Linksys router giving out IP addresses. If you have an IDS such as Snort configured on your network, it would be fairly straightforward to build a configuration watching for DHCP traffic on specific VLANs not originating from legitimate servers (as defined by you, The Administrator). Find a helpful article here describing such a scenario: http://security.itworld.com/4363/ITW3542/page_1.html HTH, Matt