Ya the 857 is a good one too. I enjoyed mine as well.
Ya after QualComm bought up Ubi, it's been different.
What are the devices that need reservations? For some devices, the use of Static can be used that's outside of the routers default DHCP IP address pool. Devices like printers, NAS, controllers, APs and devices that don't need much internet access or router management, use static IP addresses.
I'll have a look at my 880L.
Thanks for the link.