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<DIV><FONT face=Garamond>Hi, Andrew</FONT></DIV>
<DIV><FONT face=Garamond></FONT> </DIV>
<DIV><FONT face=Garamond>Thanks for your comment , you are right about the
design of bridge server. We quit testing bridge server with 2 interface
cards not only the way that bridge server behaves, but the connection between
venue server and bridge server on 2 interface cards is awkard.</FONT></DIV>
<DIV><FONT face=Garamond></FONT> </DIV>
<DIV><FONT face=Garamond>By the way, I would like to discuss another bridging
design, and be glad to share your opinion.</FONT></DIV>
<DIV><FONT face=Garamond></FONT> </DIV>
<DIV><FONT face=Garamond>We have done tests on one venue serving by a couple of
bridge servers, and won't work as expected(we would like to see if the unicast
connections could be load shared). We built a couple of bridge servers and
configured them to serve a particular venue, so once you choose unicast service,
a list of bridge server would be shown for selection, though
some users selected the different bridges, the users were directed to some
particular one. </FONT></DIV>
<DIV><FONT face=Garamond></FONT> </DIV>
<DIV><FONT face=Garamond>I know that many venues could be served by just one
bridge server, do you think that AG team member have any intention to
enchance load sharing features as I mentioned above? </FONT></DIV>
<DIV><FONT face=Garamond></FONT> </DIV>
<DIV><FONT face=Garamond>Jinshung</FONT></DIV>
<DIV><FONT face=Garamond></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt 新細明體"> ----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt 新細明體; font-color: black"><B>From:</B>
<A title=Andrew.Rowley@manchester.ac.uk
href="mailto:Andrew.Rowley@manchester.ac.uk">Andrew Rowley</A> </DIV>
<DIV style="FONT: 10pt 新細明體"><B>To:</B> <A title=jsliu@nchu.edu.tw
href="mailto:jsliu@nchu.edu.tw">'Jinshung Liu'</A> </DIV>
<DIV style="FONT: 10pt 新細明體"><B>Cc:</B> <A title=ag-tech@mcs.anl.gov
href="mailto:ag-tech@mcs.anl.gov">ag-tech@mcs.anl.gov</A> </DIV>
<DIV style="FONT: 10pt 新細明體"><B>Sent:</B> Wednesday, January 05, 2005 6:15
PM</DIV>
<DIV style="FONT: 10pt 新細明體"><B>Subject:</B> RE: [AG-TECH] Bridge server with
2 interface cards</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Hi,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Sorry, I
misunderstood what was happening here.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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 face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Andrew
</SPAN></FONT><FONT face=Wingdings color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Wingdings">J</SPAN></FONT><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT></P>
<DIV>
<P><FONT face="Times New Roman" color=navy size=2><SPAN
style="FONT-SIZE: 10pt; 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 style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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 face=PMingLiU size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; 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 face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; 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 face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; 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 face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; 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 face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; 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-RIGHT: medium none; PADDING-RIGHT: 0cm; BORDER-TOP: medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0cm; MARGIN: 5pt 0cm 5pt 3.75pt; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0cm; BORDER-BOTTOM: medium none">
<DIV>
<P class=MsoNormal><FONT face=PMingLiU size=2><SPAN
style="FONT-SIZE: 10pt">----- Original Message -----
<o:p></o:p></SPAN></FONT></P></DIV>
<DIV style="font-color: black">
<P class=MsoNormal style="BACKGROUND: #e4e4e4"><B><FONT face=PMingLiU
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt">From:</SPAN></FONT></B><FONT
size=2><SPAN style="FONT-SIZE: 10pt"> <A
title=Andrew.Rowley@manchester.ac.uk
href="mailto:Andrew.Rowley@manchester.ac.uk">Andrew Rowley</A>
<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><B><FONT face=PMingLiU size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt">To:</SPAN></FONT></B><FONT
size=2><SPAN style="FONT-SIZE: 10pt"> <A title=liu@tcrc.edu.tw
href="mailto:liu@tcrc.edu.tw">'Jinshung Liu'</A> ; <A
title=ag-tech@mcs.anl.gov
href="mailto: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 face=PMingLiU size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt">Sent:</SPAN></FONT></B><FONT
size=2><SPAN style="FONT-SIZE: 10pt"> Wednesday, December 22, 2004 6:27
PM<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><B><FONT face=PMingLiU size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt">Subject:</SPAN></FONT></B><FONT
size=2><SPAN style="FONT-SIZE: 10pt"> RE: [AG-TECH] Bridge server with 2
interface cards<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"><o:p> </o:p></SPAN></FONT></P></DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Hi,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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 face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">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 face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Hope this
helps,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Andrew G D Rowley
</SPAN></FONT><FONT face=Wingdings color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Wingdings">J</SPAN></FONT><FONT
face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT></P>
<DIV>
<P><FONT face="Times New Roman" color=navy size=2><SPAN
style="FONT-SIZE: 10pt; 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 style="TEXT-ALIGN: center" align=center><FONT
face=PMingLiU size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; 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 face=PMingLiU size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Garamond">Hi</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> </SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; 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 face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> </SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; 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 face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> </SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Garamond">Could you give any suggestion
?</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> </SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Garamond size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: Garamond">Jinshung
Liu</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> </SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> </SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'"> </SPAN></FONT><o:p></o:p></P></DIV></BLOCKQUOTE></DIV></BLOCKQUOTE></BODY></HTML>