Hi Nate, On 27/10/18 1:11 pm, Nate Bargmann wrote: > A bit of searching turned up this link: > > ftp://ftp.ucsd.edu/hamradio/packet/tcpip/docs/netrom.ps.gz > > I scanned through it and it looks to be a rather complete description of > the Level 3 protocol.
Yes, I had seen that article, but it seemed to me more about the L4 protocol than about L3. I'll have a closer look though. :-) I note there's mention of a "mnemonic identifier", presumably this is not the SSID but some other ID of the station. I'm not sure how that is generated, so it's still a little unclear how it all fits together. It looks as though two digipeaters would be trivial, since you know if station A hears station B say it can reach D via C with quality Q; that it can use the route A→B→C→D in the AX.25 frame. Going further looks tricky though, if there were further hops between C and D, there would need to be some logic at C that can consider *its* routing table and forward further. AX.25 2.0 supports up to 8 digipeaters, so maybe the answer is that in larger networks, you'd need this IP-enabled Net/ROM stack running so it can see the incoming IP frame and consult its Net/ROM routing table to move it the next few hops. I take it there's no "traceroute" like functionality in Net/ROM? Regards, -- Stuart Longland (aka Redhatter, VK4MSL) I haven't lost my mind... ...it's backed up on a tape somewhere.
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