> I continue to believe that running Ethernet-sized frames (1500 bytes) over
> AX.25 is a bad idea. Although the AX.25 protocol specification is widely
> violated on this score, it does provide for a maximum of 256 bytes per frame.
> Unless you have control over every AX.25 router along the path, very odd
> things can happen with excessively long frames.
Mike, I agree with you in principle. What I'm trying to do now is configure a
single IP-over-AX25 link where the path will be solid (64kbps full duplex 900
MHz radios over a 5km LOS path) and I control the endpoints. I could run
something other than AX.25 on the link, but I'm using PI cards as the drivers
and AX25 avoids having to do any code kludges. I'm just trying to figure out
the relationship between the ax25 maximum-packet-length param and the
interface MTU.
John