All things related to multicast

[debbie fligor <>]

On Feb 2, 2009, at 15:17, debbie fligor wrote:

> We've been trying to track down why it wasn't working here as well.   
> we also have rpf failing for 128.194.0.40-44 and are only getting an  
> (S,G) for the 207.75.165.77 source.
>
> Our best unicast path for this is via NLR but the preferred  
> multicast path is through I2.

actually, I need to correct this.

we're getting the multicast and unicast from NLR, but the SA is coming  
from I2 and one other peer but not from our NLR MSDP peer, so the next  
hop and the SA aren't coming from the same direction, thus failing RPF.

Anyone know why NLR isn't announcing it?

> we're looking at why at the moment.
>
>
> On Feb 2, 2009, at 14:57, Laura Kristoff wrote:
>
> > On Mon, Feb 02, 2009 at 10:32:32AM -0600, Ben Fineman wrote:
> > > Hi all,
> > >
> > > We're currently sending multicast streams from Internet2/ESCC Joint
> > > Techs Workshop in College Station, TX. There are three multicast
> > > streams:
> > >
> > > HD MPEG2 (25 Mbps)
> > > 233.45.17.248:4444
> > >
> > > SD MPEG2 (6 Mbps)
> > > 233.45.17.245:4444
> > >
> > > DVTS (SD) (30 Mbps)
> > > 233.45.17.247:8000
> >
> > At Northwestern University we are not able to view it.  We seem to be
> > joining a session sourced from 207.75.165.77 but aren't getting any
> > actual data from this session.  We also have a msdp announcement
> > from one of our private peerings from a source of 128.194.0.44 ..
> > that was is being rejected because the RPF check fails.  Is the  
> > latter
> > the correct source?
> >
> > --Laura
> >
> > --
> > Laura Kristoff 
> > ()
> > IT Telecommunications and Network Services
> > 312-503-4094
>
> -----
> -debbie
> Debbie Fligor, n9dn       Network Engineer, CITES, Univ. of Il
> email:           <http://www.uiuc.edu/ph/www/ 
> fligor>
>                   "My turn."  -River Tam

-----
-debbie
Debbie Fligor, n9dn       Network Engineer, CITES, Univ. of Il
email: 

          <http://www.uiuc.edu/ph/www/fligor>
                   "My turn."  -River Tam