System does not allow certain IP addresses to be set.
Hardware tested:
Model: Digi Connect ME (from the device web page)
MAC 00:40:9D:71:F6:27 (from the device web page)
The same MAC value is also on the label
P/N: DC-ME-0T-S (From the P/O)
Label: PN(1P): 50000878-01
Default IP: 169.254.147.216 (factory default)
Tested with an Ethernet crossover cable directly to a PC running Win XP. No hub or other network connections.
IP address changing experiments:
All following tests use Digi Device Discovery, then connect via the web interface to the device.
Always disable DHCP, force the use of a fixed IP.
(Change only the last 2 octants)
Change the IP to 169.254.132.120 - this WORKS
(Change the last 3 octants)
Change the IP to 169.96.132.20 - this FAILS. Digi
Device Discovery cannot find the device.
Restore to factory defaults. this WORKS. Digi Device
Discovery finds the device at 169.254.147.216
(Change only the 2nd octant)
Change the IP to 169.96.147.216 this FAILS. Digi Device Discovery cannot find the device.
Restore to factory defaults. this WORKS. Digi Device
Discovery finds the device at 169.254.147.216
This mess started when we tried to change the entire IP address to a private value. All 4 octants were changed. At that point Digi Device discovery failed to find the device. The device was restored to factory defaults and so recovered. These experiments seem to suggest that the first 2 octants cannot be changed from 169.254 to any other values.
We do not understand this limitation and there does not seem to be anything in the docs which explains this or identifies it as a restriction. Please advise.