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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Sorry, I misunderstood what was happening
here.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>What could be happening is that the bridge
server is listening to multicast on the network that does not have multicast
enabled. I am not sure how you would go about doing this, but you need
the unicast part of the bridge server to listen on one network card and the
multicast part to listen on the other network card. So far as I know, the
current bridge server (Quickbridge) only listens on one network card (which
this is I am uncertain). I expect that if you use the multicast card by
default, this might work. Otherwise, it will probably require a
modification of the source code of quickbridge to allow the choosing of a
different network card for the multicast and unicast sockets.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Andrew </span></font><font size=2
color=navy face=Wingdings><span style='font-size:10.0pt;font-family:Wingdings;
color:navy'>J</span></font><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<div>
<p><font size=2 color=navy face="Times New Roman"><span style='font-size:10.0pt;
color:navy'>============================================<br>
Access Grid Support Centre,<br>
RSS Group,<br>
<st1:place w:st="on"><st1:City w:st="on">Manchester</st1:City></st1:place>
Computing,<br>
<st1:place w:st="on"><st1:PlaceName w:st="on">Kilburn</st1:PlaceName> <st1:PlaceType
w:st="on">Building</st1:PlaceType></st1:place>,<br>
<st1:place w:st="on"><st1:PlaceType w:st="on">University</st1:PlaceType> of <st1:PlaceName
w:st="on">Manchester</st1:PlaceName></st1:place>,<br>
<st1:Street w:st="on"><st1:address w:st="on">Oxford Road</st1:address></st1:Street>,<br>
<st1:place w:st="on"><st1:City w:st="on">Manchester</st1:City></st1:place>,<br>
M13 9PL,<br>
<st1:place w:st="on"><st1:country-region w:st="on">UK</st1:country-region></st1:place><br>
Tel: +44(0)161-275 0685<br>
Email: Andrew.Rowley@manchester.ac.uk</span></font><o:p></o:p></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Jinshung Liu
[mailto:jsliu@nchu.edu.tw] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 23 December 2004 01:07<br>
<b><span style='font-weight:bold'>To:</span></b> Andrew Rowley<br>
<b><span style='font-weight:bold'>Cc:</span></b> ag-tech@mcs.anl.gov<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [AG-TECH] Bridge
server with 2 interface cards</span></font><font face="Times New Roman"><span
style='font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face=PMingLiU><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>Andrew,</span></font><font face="Times New Roman"><span
style='font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>Thanks very much for your help, but I have another
question, a reason that I set up 2 cards.</span></font><font
face="Times New Roman"><span style='font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>We have 2 big networks, one is multicast enabled and the
other is not, they are not interconnected. But some users could access both networks,
some users can only access the network that is not multicast enabled. So
these 2 interface cards on Bridge server were designed to help
connectting those 2 domain users.</span></font><font
face="Times New Roman"><span style='font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>Could you see any resolution ?</span></font><font
face="Times New Roman"><span style='font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>Jinshung </span></font><font face="Times New Roman"><span
style='font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<blockquote style='border:none;border-left:solid black 1.5pt;padding:0cm 0cm 0cm 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><font size=2 face=PMingLiU><span style='font-size:10.0pt'>-----
Original Message ----- <o:p></o:p></span></font></p>
</div>
<div style='font-color:black'>
<p class=MsoNormal style='background:#E4E4E4'><b><font size=2 face=PMingLiU><span
style='font-size:10.0pt;font-weight:bold'>From:</span></font></b><font size=2><span
style='font-size:10.0pt'> <a href="mailto:Andrew.Rowley@manchester.ac.uk"
title="Andrew.Rowley@manchester.ac.uk">Andrew Rowley</a> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=PMingLiU><span style='font-size:10.0pt;
font-weight:bold'>To:</span></font></b><font size=2><span style='font-size:
10.0pt'> <a href="mailto:liu@tcrc.edu.tw" title="liu@tcrc.edu.tw">'Jinshung
Liu'</a> ; <a href="mailto:ag-tech@mcs.anl.gov" title="ag-tech@mcs.anl.gov">ag-tech@mcs.anl.gov</a>
<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=PMingLiU><span style='font-size:10.0pt;
font-weight:bold'>Sent:</span></font></b><font size=2><span style='font-size:
10.0pt'> Wednesday, December 22, 2004 6:27 PM<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=PMingLiU><span style='font-size:10.0pt;
font-weight:bold'>Subject:</span></font></b><font size=2><span
style='font-size:10.0pt'> RE: [AG-TECH] Bridge server with 2 interface cards<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Often Multicast sockets are set up to
“not loopback”. This means that any traffic sent from the
local computer is not received at the local computer again. This is
typically true of bridges.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I do not think that you need to set up two
separate cards to listen in to multicast and unicast at the same time.
You can only set up one unicast socket listening on a particular port, but you
can usually set up any number of multicast sockets listening on the same port
as the unicast socket.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hope this helps,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Andrew G D Rowley </span></font><font
size=2 color=navy face=Wingdings><span style='font-size:10.0pt;font-family:
Wingdings;color:navy'>J</span></font><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<div>
<p><font size=2 color=navy face="Times New Roman"><span style='font-size:10.0pt;
color:navy'>============================================<br>
Access Grid Support Centre,<br>
RSS Group,<br>
<st1:place w:st="on"><st1:City w:st="on">Manchester</st1:City></st1:place>
Computing,<br>
<st1:place w:st="on"><st1:PlaceName w:st="on">Kilburn</st1:PlaceName> <st1:PlaceType
w:st="on">Building</st1:PlaceType></st1:place>,<br>
<st1:place w:st="on"><st1:PlaceType w:st="on">University</st1:PlaceType> of <st1:PlaceName
w:st="on">Manchester</st1:PlaceName></st1:place>,<br>
<st1:Street w:st="on"><st1:address w:st="on">Oxford Road</st1:address></st1:Street>,<br>
<st1:place w:st="on"><st1:City w:st="on">Manchester</st1:City></st1:place>,<br>
M13 9PL,<br>
<st1:place w:st="on"><st1:country-region w:st="on">UK</st1:country-region></st1:place><br>
Tel: +44(0)161-275 0685<br>
Email: Andrew.Rowley@manchester.ac.uk</span></font><o:p></o:p></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face=PMingLiU><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
owner-ag-tech@mcs.anl.gov [mailto:owner-ag-tech@mcs.anl.gov] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Jinshung Liu<br>
<b><span style='font-weight:bold'>Sent:</span></b> 22 December 2004 03:18<br>
<b><span style='font-weight:bold'>To:</span></b> ag-tech@mcs.anl.gov<br>
<b><span style='font-weight:bold'>Subject:</span></b> [AG-TECH] Bridge server
with 2 interface cards</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face=PMingLiU><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>Hi</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>We were trying to build a better AG connection
topology, so we intalled 2 network interface cards, where one sits in multicast
network domain and the other in unicast network domain. </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>But it didn't seem to work, the AG clients from multicast
domain can't join with the AG clients from unicast domain ( the clients
using bridge server). </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>Could you give any suggestion ?</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Garamond><span style='font-size:12.0pt;
font-family:Garamond'>Jinshung Liu</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt;font-family:"Times New Roman"'> </span></font><o:p></o:p></p>
</div>
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