This document describes the IP schema we use. The main point is that the DHCP server on non-Internet connected nodes assigns numbers on the ethernets from 10.A.B/24, where A and B are made by hashing the MAC number. A != 0.
Numbers are assigned to the wireless interface in the form 10.0.A.B/16.
We will assign numbers to stations from 10.0/16. The last 16 bits are the XOR of the first two octets of the MAC number, the second two octets, and the third octets, where the bytes are taken in "reading order." That is, we produce numbers 10.0.A.B from the MAC numbers. If the MAC produces A = 0, B = 0 or A = 255, B = 255, then A and B are assigned randomly. The netmask is /16.
(We compute numbers from the MAC to begin with because in the common case, a station will boot with the same A and B every time, which is useful for diagnostic purposes.)
The host networks are assigned from 10/8. We assign to each Ethernet interface, a network 10.A.B.0, where A and B are computed as above from the Ethernet MAC number. If A = 0, we re-assign it randomly. The netmask is /24.
We run OSPF in point-to-multipoint mode on each wireless interface. The wireless and wired interfaces should be configured with 'network zzzzz/x area 0' clauses under the 'router ospf' command. All other interfaces are run in passive mode (i.e., no OSPF Hellos are sent).
We will use channel 11. The SSID is 'cuw', all lower case, without the single quotes.
Missing from this design are authentication, naming, etc.
We have not solved the BSSID partitioning problem. We will have to watch out for this (perhaps Prism-based cards such as ours are not affected).
Linux implementation for Soekris board.
CD-ROM implementation of the new network design.