I have a range of 50 addresses (100-149) in the DHCP reservation table. My HR20 is set to 120. I plan on watching the reservations as they approach 120 and confirm that the HR20 drops as it gets closer. I could just restrict the reservations to 100-119. I am also thinking I could manually reserve 120 in the table so the DHCP server doesn't attempt to reserve it. Or convert the HR20 to dynamic.
Again, thanks for your help.
Either resizing the DHCP range, using DHCP reservations, or switching over to DHCP for the HR20 should all work. You definitely do not want to keep a static IP address within the DHCP range. As for watching the assignments go up to 120, while it may seem that the DHCP server issues the IP addresses sequentially, you cannot count on that to happen either.