On Tue, 21 Mar 2000, Arno Verhoeven wrote:
> "Jose R. Marte A." wrote:
> >
> > In datagram mode, IP packets are encapsulated in AX.25
> > (UI frames) and transmitted without any other link level mechanisms,
> > such as connections or acknowledgments.
> >
> > In vc (virtual circuit) mode, IP packets are encapsulated in AX.25
> > (I frames) and are acknowledged at the link level according to the
> > AX.25 protocol. Link level (i.e. AX.25) connections are opened as
> > necessary.
> >
>
> Isn't this the other way around?
> Datagram is the default mode, and I've never seen UI frames after the
> connection has been established. But maybe I'm mistaking.
No, Jose has it right.
> The next question that pops up is;
> If this setting determines the AX.25 connection type,
It defines how _IP_traffic_ is carried over AX.25.
> then what is the
> difference with the parameter set in
> /proc/sys/net/ax25/<portname>/connect_mode ???
This defines the type of incoming AX.25 connections allowed. Zero means no
connections are allowed (only incoming UI frames are processed), one means
connected mode is allowed to carry upper level protocol frames (like IP or
NET/ROM) and two means everything is accepted (including no-L3-protocol
frames or text mode).
--
Tomi Manninen Internet: [EMAIL PROTECTED]
OH2BNS AX.25: [EMAIL PROTECTED]
KP20ME04 Amprnet: [EMAIL PROTECTED]
