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RE: Serial bridge availability
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As in IP ->> Serial link ->> IP
Well I guess you could implement PPP on the serial link and the packet
would
just broadcast as per usual, if is on the same subnet.
Failing that writing a bridge wouldn't be too difficult.
What are you trying to do?
Brett
From: xAP_developer@xxxxxxx [mailto:xAP_developer@xxxxxxx]
On Behalf Of Neil Wrightson
Sent: 06 January 2010 10:51
To: xAP_developer@xxxxxxx
Subject: [xAP_developer] Serial bridge availability
Hi All,
Does a serial bridge exist for xAP?
I.e.
Bridging
xAP is, so far is as practicable, network agnostic. Where two networks are
to be joined, so that xAP messages can be passed between then, a software
bridge is used. The bridge understands the implementation details of the
xAP
protocol on each physical network, and performs the necessary protocol
conversions to pass the message from one network to another.
In some cases, the bridge may provide a configuration interface to allow
traffic in one or both directions to be restricted.
A proposal has been made to permit messages to be flagged
"non-routable" in
the xAP-Header, and for bridges to never pass these messages. Currently
this
item is still open.
Messages passed over the bridge always have the xAP-header hop count
increased. A bridge may be configured to discard messages with hop-count
> n
to prevent looping/broadcast storms.
Regards,
Neil Wrightson.
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<p class=MsoNormal><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>As in IP ->> Serial link ->>
IP <o:p></o:p></span></p>
<p class=MsoNormal><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Well I guess you could implement PPP on the serial link
and the
packet would just broadcast as per usual, if is on the same
subnet.<o:p></o:p></span></p>
<p class=MsoNormal><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Failing that writing a bridge wouldn't be too
difficult.<o:p></o:p></span></p>
<p class=MsoNormal><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>What are you trying to
do?<o:p></o:p></span></p>
<p class=MsoNormal><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Brett<o:p></o:p></span></p>
<p class=MsoNormal><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US
style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span
lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>
xAP_developer@xxxxxxx
[mailto:xAP_developer@xxxxxxx]
<b>On Behalf Of </b>Neil Wrightson<br>
<b>Sent:</b> 06 January 2010 10:51<br>
<b>To:</b> xAP_developer@xxxxxxx<br>
<b>Subject:</b> [xAP_developer] Serial bridge
availability<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hi
All,</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Does
a serial bridge exist for
xAP?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I.e.</span><o:p></o:p></p>
</div>
<div>
<h2><span
style='font-family:"Arial","sans-serif"'>Bridging<o:p></o:p></span></h2>
<p><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>xAP
is, so
far is as practicable, network agnostic. Where two networks are to be
joined,
so that xAP messages can be passed between then, a software bridge is used.
The
bridge understands the implementation details of the xAP protocol on each
physical network, and performs the necessary protocol conversions to pass
the
message from one network to another.
<o:p></o:p></span></p>
<p><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>In
some
cases, the bridge may provide a configuration interface to allow traffic in
one
or both directions to be restricted.
<o:p></o:p></span></p>
<p><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>A
proposal
has been made to permit messages to be flagged
"non-routable" in the
xAP-Header, and for bridges to never pass these messages. Currently this
item
is still open. <o:p></o:p></span></p>
<p><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Messages
passed over the bridge always have the xAP-header hop count increased. A
bridge
may be configured to discard messages with hop-count > n to prevent
looping/broadcast storms. <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Regards,</span>
<o:p></o:p></p>
</div>
<div>
<p><b><span style='font-size:13.5pt'>Neil
Wrightson.</span></b> <o:p></o:p></p>
</div>
</div>
<div>
<p class=MsoNormal><span
style='color:white'><o:p></o:p></span></p>
</div>
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