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[ax25-layer2] AX.25 over raw serial interface

Samuel A. Falvo II sam.falvo at gmail.com
Wed Jul 29 19:26:02 UTC 2009


On Wed, Jul 29, 2009 at 12:13 PM, Jay Nugent<jjn at nuge.com> wrote:
>   On a JNOS system, this would simple be known as a "slip' link.  But I
> am presuming you are not running JNOS.

I'm not familiar with JNOS, but if JNOS' slip is what I think it is,
"slip" is a different protocol from AX.25.  The Serial Line IP
protocol is a raw frame-relay protocol that wraps packets in $C0
bytes.  No source/destination addresses, control, or type fields.  No
CRCs either.  If data gets corrupted on a serial link, you're screwed.
 But, that's OK, because it's operating under the assumption that TCP
will pick up the slack.

I interpreted Can's request as the ability to pass raw AX.25 frames
between two machines.  In this case, PPP is the closest available
relative (since both AX.25 and PPP are HDLC protocols), but as this is
the AX.25 SIG list... ;D

-- 
Samuel A. Falvo II



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