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Serial Bridge
- Subject: Serial Bridge
- From: "Neil Wrightson" <neilw@xxxxxxxxxx>
- Date: Wed, 6 Jan 2010 21:53:00 +1100
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Sorry for double posting. I'm not sure who reads what?
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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<DIV><FONT size=2 face=Arial><SPAN
class=463255110-06012010>Sorry for double
posting. I'm not sure who reads what?</SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=463255110-06012010></SPAN></FONT> </DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=463255110-06012010>
<DIV><FONT size=2 face=Arial><SPAN
class=296163310-06012010>Hi
All,</SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=296163310-06012010></SPAN></FONT> </DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=296163310-06012010>Does a
serial bridge exist for xAP?</SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=296163310-06012010></SPAN></FONT> </DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=296163310-06012010>I.e.</SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=296163310-06012010>
<H2>Bridging</H2>
<P>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. </P>
<P>In some cases, the bridge may provide a configuration interface to
allow
traffic in one or both directions to be restricted. </P>
<P>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. </P>
<P>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.
</P></SPAN></FONT></DIV>
<DIV><FONT size=2 face=Arial><SPAN
class=296163310-06012010></SPAN></FONT> </DIV>
<DIV><SPAN style="FONT-FAMILY: Arial; FONT-SIZE:
10pt">Regards,</SPAN> </DIV>
<DIV class=Section1>
<P><B><SPAN style="FONT-SIZE: 13.5pt">Neil
Wrightson.</SPAN></B>
</SPAN></FONT></P></DIV></DIV>
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