All things related to multicast

[Pekka Savola <>]

Hello,

Thanks for getting this fixed.

There seem to be some problems with the reverse direction, but on a much 
smaller scale. I see that most if not all european beacons aren't seen by 
*.edu.au.  Is there anyone from Australia on the list or are there 
looking glasses etc. to see if our MSDP SAs are getting through?

Pekka

On Fri, 30 Oct 2009, Chris Robb wrote:
> I'm getting an I2 engineer to look into this and report their findings.
>
> -Chris
>
> On Oct 30, 2009, at 10:39 AM, Pekka Savola wrote:
>
> > Let me bring this up again.  The AG beacon is not really very useful right 
> > now, but actually quite few of the problems there are actual problems.
> >
> > Let's take for example *.edu.au sites.  Very few of them are seen by R&E 
> > sites on Internet2 and GEANT.
> >
> > If you examine source 129.78.221.17 for example, on the I2 core router 
> > proxy in SEAT gives the following MSDP SA rejects.  Ok, quite a few of 
> > these are rejects due to MSDP RPF mechanism, but there should still be at 
> > least one accept:
> >
> > show msdp sa source 129.78.221.17
> > Group address   Source address  Peer address    Originator      Flags
> > 233.4.200.18    129.78.221.17   134.55.3.6      129.78.255.8    Reject
> >                                137.164.26.141  129.78.255.8    Reject
> >                                138.18.12.237   129.78.255.8    Reject
> >                                207.231.240.2   129.78.255.8    Reject
> >                                207.231.240.21  129.78.255.8    Reject
> >                                207.231.241.149 129.78.255.8    Reject
> >                                210.7.36.193    129.78.255.8    Reject
> >                                210.7.36.194    129.78.255.8    Reject
> >
> > Maybe someone with better knowledge of AU - I2 multicast interconnection 
> > could take a look at this ?
> >
> > [1] http://routerproxy.grnoc.iu.edu/internet2/
> >
> >
> > On Thu, 6 Mar 2008, Pekka Savola wrote:
> > > Not sure if this is the best media to reach these sites, but I can't think 
> > > of a better one..
> > >
> > > The AG beacon [1] has a lot of sites which don't seem to be able to send 
> > > multicast that would be received by basically anyone else (the columns 
> > > where almost every cell is "NA").  As a result, using the AG matrix as one 
> > > way to measure whether inter-domain multicast is working is not very 
> > > useful.
> > >
> > > I guess these sites are likely to have a problem in their or their 
> > > upstreams' multicast setup (e.g. MSDP) and should be either fixed or 
> > > removed from the beacon matrix.
> > >
> > > At least the following seem to be the main offenders:
> > >
> > > beacon.its.adelaide.edu.au
> > > foxbat.services.adelaide.edu.au
> > > usq-fos.usq.edu.au
> > > darkstar.clemson.edu
> > > ndt.ilstu.edu
> > > dwarf.ua.edu
> > > darkness.nss.udel.edu
> > > transducer.nss.udel.edu
> > > beacon.net.unc.edu
> > > i2-accessgrid-6.unomaha.edu
> > > chlt-beacon.ncren.net
> > > ecu-beacon.ncren.net
> > > ws-beacon.ncren.net
> > > vv2.ap-accessgrid.org
> > > bridge.ndhu.edu.tw
> > > venue.ndhu.edu.tw
> > >
> > > If you're at these sites or close to them, maybe you a little nudge 
> > > wouldn't hurt..
> > >
> > > Thanks!
> > >
> > > [1]
> > > http://beacon.dast.nlanr.net/
>
> Chris Robb, Internet2 Manager of Operations
> O: 812.855.8604  C: 812.345.3188
> ****************
> SC09: Visit the Internet2 Booth #1355
> November 14-20, 2009
> Portland, Oregon Convention Center
> http://events.internet2.edu/2009/sc09/