All things related to multicast

[Zenon Mousmoulas <>]

Jeffry,

How much traffic are you still getting?

At my end I still see these sources but traffic seems to be down to 
reasonable levels:

Active IP Multicast Sources - sending >= 4 kbps

Group: 224.2.127.254, (sap.mcast.net)
   Source: 130.89.191.172 (iptv2-vh.vck.utwente.nl)
     Rate: 3 pps/6 kbps(1sec), 6 kbps(last 30 secs), 5 kbps(life avg)
   Source: 130.89.191.173 (iptv3-vh.vck.utwente.nl)
     Rate: 4 pps/8 kbps(1sec), 8 kbps(last 30 secs), 8 kbps(life avg)

Regards,
Z.


On 18/09/2012 7:10 μ.μ., Jeffry Handal wrote:
> Zenon,
>
> We saw traffic come in for multicast group 224.2.127.254 from all 3
> sources. I cannot tell at this time how much traffic but we are still
> getting it.
>
> Regards,
>
>
> Jeffry J.Handal
> Convergence Specialist, M.S.E.E., P.E.
> University Networking and Infrastructure - LSU
> 200 Computing Services Building
> Baton Rouge, LA 70803
> Office: (225)578-1966
> Fax:    (225)578-6400
>
> On 9/18/2012 10:58, Zenon Mousmoulas wrote:
> > Earlier today, certainly between 12:00-12:30 EEST (09:00-09:30 UTC), a
> > traffic spike was noticed here on the SAP ipv4 multicast group, just
> > like the good old times ;)
> >
> > What follows is a partial view from GRNET's border router, showing three
> > sources in University Twente in the Netherlands sending an aggregate of
> > 52 Mbps on average during this time (but probably peaking much higher
> > during shorter spikes).
> >
> > Top-talkers Src IP Addr ordered by packets:
> > 2012-09-18 11:37:02.110  3317.910 UDP      130.89.191.173       16(
> > 0.0)  249.8 M( 6.9)    6.2 G( 0.3)    75299   14.8 M    24
> > 2012-09-18 11:54:32.980  2390.780 UDP      130.89.191.172       12(
> > 0.0)  203.7 M( 5.6)   12.4 G( 0.5)    85202   41.6 M    61
> > 2012-09-18 11:54:04.860  2342.120 UDP      130.89.191.174       11(
> > 0.0)   96.4 M( 2.6)    5.1 G( 0.2)    41155   17.5 M    53
> >
> > Top-talkers Dst IP Addr ordered by packets:
> > Date first seen          Duration Proto       Dst IP Addr Flows(%)
> > Packets(%)       Bytes(%)         pps      bps   bpp
> > 2012-09-18 11:33:50.660  3633.100 UDP       224.2.127.254      194(
> > 0.0)  550.0 M(15.1)   23.7 G( 1.0)   151376   52.2 M    43
> >
> > Top-talkers Dst Port ordered by packets:
> > Date first seen Duration Proto Dst Port Flows(%) Packets(%) Bytes(%) pps
> > bps bpp
> > 2012-09-18 11:33:50.660 3633.100 UDP 9875 195( 0.0) 550.0 M(15.1) 23.7
> > G( 1.0) 151376 52.2 M 43
> >
> > I wonder if anyone else saw this -- it would just be good to know (for
> > our Ops at least).
> >
> > Kind regards,
> > Z.