<html>
<font size=3>an alternative that might work is<br><br>
<br>
<x-tab> </x-tab>vic
-Xmaxbw=<value> ...<br><br>
--bob<br><br>
At 02:35 PM 3/14/2002 -0500, Nolan, Kevin [NCSUS] wrote:<br><br>
<br>
</font><blockquote type=cite class=cite cite><font size=2>Actually, our
problem is with the vic in windows. We are using windows 2000
machines as capture computers. In linux the -B option works
fine.<br>
</font><font size=3><br>
</font><font size=2>According to the vic-userguide...</font><font size=3>
<br><br>
</font><font size=2>-B</font><font size=3> <br>
</font><font size=2>Set the
maximum value of the bandwidth slider to a user-specified number of
kbit/s. This value is limited to 256 kbit/s if the conference
address is a multicast address and the TTL in use is greater than 64 (ie,
the traffic will leave your multicast region).<br>
</font><font size=3><br>
</font><font size=2>So in the windows vic the above is true, but in the
linux vic this must have changed in the code. It doesn't matter
what we set the bandwidth to in windows...if the TTL is 127, it behaves
as the guide suggests above.<br>
</font><font size=3><br>
</font><font size=2>We'd like to be able to have a TTL of 127 and a
bandwidth value of much more than 256 kbit/s on our windows capture
machines.<br>
</font><font size=3><br>
</font><font size=2>-----Original Message-----</font><font size=3> <br>
</font><font size=2>From: Robert Olson
[<a href="mailto:olson@mcs.anl.gov">mailto:olson@mcs.anl.gov</a>]
</font><font size=3><br>
</font><font size=2>Sent: Thursday, March 14, 2002 1:45
PM</font><font size=3> <br>
</font><font size=2>To: Nolan, Kevin [NCSUS];
'ag-tech@mcs.anl.gov'</font><font size=3> <br>
</font><font size=2>Subject: Re: [AG-TECH] TTL -
Multicast</font><font size=3> <br><br>
</font><font size=2>At 12:01 PM 3/14/2002 -0500, Nolan, Kevin [NCSUS]
wrote:</font><font size=3> <br>
</font><font size=2>>The problem we're seeing with both VIC and Rat is
that as the TTL value </font><font size=3><br>
</font><font size=2>>gets increased, the amount of data being
transmitted is decreased as a way </font><font size=3><br>
</font><font size=2>>to alleviate network congestion. The
problem with this is that our remote </font><font size=3><br>
</font><font size=2>>sites generally connect via high-bandwidth links,
and the associated lower </font><font size=3><br>
</font><font size=2>>frame rates are unacceptable for real-time
communication between </font><font size=3><br>
</font><font size=2>>sites. Is there any way that we can change
these values, or does the </font><font size=3><br>
</font><font size=2>>source code have to be
modified?</font><font size=3> <br><br>
</font><font size=2>the AG software passes a max-bandwidth option to vic
that overrides the </font><font size=3><br>
</font><font size=2>default:</font><font size=3> <br><br>
</font><font size=2> vic
-t 127 -B 10000 ip/port</font><font size=3> <br><br>
</font><font size=2>What is rat doing with ttl? is it refusing to let you
set the higher-rate </font><font size=3><br>
</font><font size=2>encodings? I don't think I have any particular
settings to make rat work </font><font size=3><br>
</font><font size=2>properly.</font><font size=3> <br><br>
</font><font size=2>--bob</font><font size=3>
</font></blockquote></html>