All things related to multicast

["Lucy E. Lynch" <>]

Marshall -

Alan set a calendar listing, but I didn't get and announcement to
post - in checking just now, I found it caught by spam-assasin ???

So, listing ade the calendar but not the list. Sigh.

Lucy E. Lynch                           Academic User Services
Computing Center                        University of Oregon

                (541) 346-1774/Cell: 912-7998

On Thu, 3 Oct 2002, Marshall Eubanks wrote:

> Alan;
>
>
> Were you sending out SAP ? Did you make use of the I2 Multicast calendar
> that Lucy Lynch maintains ?
>
> Alan Crosswell wrote:
>
> > For this event we did today, we had upwards of 300 simultaneous real
> > viewers out of about 1058 unique IPs.  Of those, 708 were on my campus
> > and capable of viewing the multicast (only 65 did in fact view the
> > MPEG1 multicast).  Another 116 real viewers were on Columbia campuses
> > that *should* be multicast enabled but are not (yet).  Of the 234
> > "remote" (non-Columbia) viewers a large percentage are I2 member sites
> > that could have been using multicast followed by the usual cable modem
> > and DSL suspects who I'm sure many of are in our neighborhood.  (Does
> > anyone already have a script lying around to take a list of IPs and
> > find out what ASNs they are in?)
> >
>
>
> If you have access to a router or a looking glass, its just
>
> show ip bgp <address>
>
> I have scripts that come very close to this for cisco IOS
>
>
> > I suspect the 65 MPEG1 viewers is largely attributable to the fact
> > that we had a .sdp file link as well as a .ipt file so that Quicktime
> > 6 viewers could watch.  Very few people seem to go through the trouble
> > of installing IPTV viewer....  Looking at the http access log, it's
> > 5-to-1 .sdp vs. .ipt and also about 5-to-1 Windows vs. Mac Quicktime.
> > And, I've found the Windows quicktime playback of RTP MPEG1 to be far
> > inferior to IPTVs.
> >
>
>
>
> Which audio were you using ? Layer II or III ? I have had decent
> performance using RealPlayer if the audio is Layer II - and I
> like Layer III MPeg-1 on Quicktime on my Macs.
>
>
> > We haven't tried using Real's "scalable multicast" features.... (or
> > ASM just yet).
> >
> > /a
> >
> >
> Re: need to get the word out about multicast on your campus!
>
>
> Did you have anything specific in mind ?
>
> --
>                                   Regards
>                                   Marshall Eubanks
>
>
>
> T.M. Eubanks
> Multicast Technologies, Inc
> 10301 Democracy Lane, Suite 410
> Fairfax, Virginia 22030
> Phone : 703-293-9624       Fax     : 703-293-9609
> e-mail : 
> 
> http://www.multicasttech.com
>
> Test your network for multicast :
> http://www.multicasttech.com/mt/
>   Status of Multicast on the Web  :
>   http://www.multicasttech.com/status/index.html
>