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<DIV><SPAN class=281311518-19042005><FONT face=Arial color=#0000ff size=2>Just
to clarify Mike's comments. When using our bridge (unicast), you are
reliant on multicast from our server (in Chicago) to the other multicast
sites. If other sites are bridging using another bridge (an NCSA AG2 venue
for instance), then the multicast would need to be stable between the two bridge
locations. We are launching an inSORS server on an Internet2
site (through the Internet2 Commons Hosted Environment Project) which will
improve multicast reliability from our bridge. More on this when we
finalize testing of the new server.</FONT></SPAN></DIV>
<DIV><SPAN class=281311518-19042005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=281311518-19042005><FONT face=Arial color=#0000ff size=2>If
everyone uses the same bridge, then it is unicast to everyone. This puts
heavy bandwidth and processing at the server site but is the most
reliable. AG2 Toolkit sites cannot use an inSORS bridge
unfortunately (for now at least). inSORS site can connect an AG2 bridge
through Manual Bridge option if you know the ip and ports for the particular
venue.</FONT></SPAN></DIV>
<DIV><SPAN class=281311518-19042005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=281311518-19042005></SPAN> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> owner-ag-tech@mcs.anl.gov
[mailto:owner-ag-tech@mcs.anl.gov]<B>On Behalf Of </B>Michael A
Gideon<BR><B>Sent:</B> Tuesday, April 19, 2005 12:25 PM<BR><B>To:</B> Joe
Barron; ag-tech@mcs.anl.gov<BR><B>Subject:</B> RE: [AG-TECH] Multicast
Issues<BR><BR></FONT></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
Joe,<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 was having similar
issues a month or so ago. inSORS told me their multicast was not stable,
and to use unicast instead. I tried it and the problems went away.
I don’t know if it was their software or some network
issues.<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">Mike<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"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<DIV class=MsoNormal style="MARGIN: 0in 0in 0pt; TEXT-ALIGN: center"
align=center><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><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">
<st1:PersonName w:st="on">owner-<st1:PersonName
w:st="on">ag-tech@mcs.anl.gov</st1:PersonName></st1:PersonName>
[mailto:<st1:PersonName w:st="on">owner-<st1:PersonName
w:st="on">ag-tech@mcs.anl.gov</st1:PersonName></st1:PersonName>] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Joe Barron<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Tuesday, April 19, 2005 7:51
AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> <st1:PersonName
w:st="on">ag-tech@mcs.anl.gov</st1:PersonName><BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> [AG-TECH] Multicast
Issues</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'">Howdy
Gang -<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'">We are
running a few inSORS boxes and appear to be having multicast issues. We
connected just fine in a conference yesterday in the Walkabout venue. This
morning, we can get and transmit audio but we are not getting and no one is
receiving video. <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'">Another
site in <st1:State w:st="on"><st1:place
w:st="on">Texas</st1:place></st1:State> has reported similar issues. Is anyone
aware of any larger I2 issues currently?<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'">Regards<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><FONT face="Comic Sans MS"
color=maroon size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'">Joe
Barron<o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><st1:place
w:st="on"><st1:PlaceName w:st="on"><FONT face="Comic Sans MS" color=maroon
size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'">Texas</SPAN></FONT></st1:PlaceName><FONT
face="Comic Sans MS" color=maroon><SPAN
style="COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'"> <st1:PlaceName
w:st="on">A&M</st1:PlaceName> <st1:PlaceType
w:st="on">University</st1:PlaceType></SPAN></FONT></st1:place><FONT
face="Comic Sans MS" color=maroon><SPAN
style="COLOR: maroon; FONT-FAMILY: 'Comic Sans MS'"><o:p></o:p></SPAN></FONT></P></DIV></DIV></BLOCKQUOTE></BODY></HTML>