Hi

I've just had a quirky experience configuring DHCP on a UTStarcom UT300R2U and will pass it on in case the workaround is any help.

Desired LAN setup was:
IP Address: 192.168.0.254
Subnet Mask: 255.255.255.0
Enable DHCP Server
Start IP Address: 192.168.0.100
End IP Address: 192.168.0.149
Subnet Mask: 255.255.255.0

The only way I found to configure it as above was:
  1. Disable DHCP and save
  2. Set IP Address and save
  3. Enable DHCP, enter desired DHCP settings and save
Otherwise there was an error message about the IP address having to be less than 254 for use with DHCP (sorry - did not note the actual message) and saving/rebooting would restore everything to default settings.

In case this behaviour was version-specific, here's the device info:
Board ID: 96338L-2M-8M
Software Version: 3.08.02.UB.01.14_1357_100807
Bootloader (CFE) Version: 1.0.37-10.1
Firmware Version: UT300R2U.0011.01
Hardware Version: UT300R2U 2.2
Model Name: UT300R2U