All things related to multicast

[Jeff Fitzwater <>]

Does anybody know if a SAP storm occurred on June 2-3 starting around  
24:00 on the 2nd    EST?

We had a strange firewall failure on our I2 Multicast connection, and  
I am just trying to eliminate things.

Thank you;


Jeff Fitzwater
OIT Network Systems
Princeton University



On Jun 23, 2008, at 8:43 AM, Michael Fortier wrote:

> > > Zenon Mousmoulas a écrit :
> > > > [...]
> > > > Would someone from Univ. Paris 13 want to share their experience?  
> > > > Jean-Francois Florence perhaps?
> > > Jean-Francois Florence is OK but only about ipv6 unicast and  
> > > multicast , you can see the University on your dbeacon  
> > > since ....and I can see some streams( audio and video ) from GRnet  
> > > in v4 , all fine even in HD.
> > > Can you tell me if you see annoucements ( in v4 and in v6 ) from  
> > > UP13 ?
> > > Notice that  s it s nt I who founded the bug, but one guy of my  
> > > team : Michael Fortier.I said him to post on wg-multicast s list.
> > > Best Regards
> > > Florence
> >
> > Hi,
> >
> > I can see Univ-Paris13 on the ipv6 beacon: http://netmon.grnet.gr/matrix/
> > I can't see anything on any ipv4 beacon.
> > If you mean v4/v6 sap announcements, I will have to check on that  
> > later.
> >
> > I hope Michael will post to the list about his findings/experience  
> > with miniSAPserver :)
> Hi,
> Here is the message I posted Friday... but everybody didn't receive  
> it.
>
> I tested the miniSapserver 0.3.4 found here :
> http://download.videolan.org/pub/videolan/miniSAPserver/
> This version has some bugs.
> DO NOT USE IT
> Problem was in the announcement interval.
>
> I corrected and now the intervalley of dispatch is 30 seconds (fixed).
> You can find sources here : 
> http://exp-videos.univ-paris13.fr/src/minisapserver-0.3.4b.tar.gz
>
> I'm under Linux. Commands to install :
> #./configure (--prefix=...)
> # make && make install
> # ./minisapserver -d -c sap.cfg
>
> sap.cfg exemple with 2 announces :
> [global]
> sap_delay=55
> sap_ttl=255
> [program]
> name=Video SD 352x264 - 35 ans P13 - IPv4
> user=videolan
> machine=exp-videos.univ-paris13.fr
> site=http://exp-videos.univ-paris13.fr
> address=224.5.43.1
> port=1234
> playlist_group=University Paris 13
> program_ttl=255
> [program]
> name=Video SD 352x264 - 35 ans P13 - IPv6
> user=videolan
> machine=exp-videos.univ-paris13.fr
> site=http://exp-videos.univ-paris13.fr
> address=ff0e::2:beeb
> port=1234
> playlist_group=University Paris 13
> program_ttl=255
>
> I created a blog which lists all information
> I shall give you the url as soon as it will be made
> Regards
>
> Michael Fortier