[nos-bbs] Remote AX25 Attach with JNOS

maiko at pcs.mb.ca maiko at pcs.mb.ca
Wed Apr 6 16:05:19 EDT 2005

> axip has the advantage that it has all the tcpip transport functions so
> you can be sure that everything that is send will get there in the end

Sorry but that is not correct. See the following :


AXIP is an IP protocol, at the same level as the other IP protocols, like
UDP, TCP, ICMP, EGP, and the list goes on.

AXIP is simply AX25 frames in IP. There are no transport functions, it's
more or less raw IP. There is no guarantee that the frames will get to the
other end.

There has been talk in past times about having a AXTCP (which would see
AX25 Frames transported over TCPIP). But I don't see the point of that.

> where axudp has no garantees

AXUDP is AX25 frames in UDP. More or less the same functionaly as AXIP,
but with the extra size of the UDP header. Functionally the same thing.

> axudp is easier to route over firewalls and routers.

Yes. AXIP is not easy or just impossible to route through alot of
the cheap home units.

> so if you can get it to work axip is better

I would say for most DSL and Cable users, that AXUDP is a better choice,
since UDP is passed by most home and consumer routers, where anything
other than UDP, TCP, or ICMP (ie AXIP) likely will not make it.

Maiko Langelaar / VE4KLM

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