Scenario: Classroom Server is serving RIS for the student positions. The RIS server is configured and working correctly. Student position consist of two Gateway 9515s running 2003, two 9315s running XpPro, one Cisco 1841(12.4, serving DHCP), one gigabit switch. The configuration information is below; RIS Server; IP address: 192.168.164.2 Subnet Mk: 255.255.255.0 Default Rt: 192.168.164.1 DNS PRI: 192.168.191.11 DNS SEC: 192.168.191.12 Student POS (There are eight of them 10-80) Router Addresses Wan: 192.168.164.10 (classroom network) Lan: 10.164.10.1 (student's network) Router DHCP Info: IP address: 10.164.10.20-10.164.10.254 Subnet Mk: 255.255.255.0 Default Rt: 10.164.10.1 DNS PRI: 10.164.10.10 DNS SEC: 192.168.191.11 Currently, to provide the student RIS we have to remove the student router from the loop. The student WAN cable gets plugged into the student switch. I need to somehow configure the cisco to supply the DHCP address but foward the boot request to the RIS server. I have tried "IP Helper Address" and "next-server", probably wrong. Has anyone gotten RIS to work through a router without using DHCP Relay? I know that this is more of a cisco issue, so if anyone knows a good cisco site to try that would also be helpful.