This "MSDP" page provides information about the inter-domain Multicast usage using the Multicast Source Disccovery Protocol (MSDP), in particular the location and use of groups, sources and Rendezvous Points (RP's).
NOTE : Full logging of the AmericaFree.TV MSDP SA Cache only started on Sep 27 11:49:36 EDT 2001; the information on this page commences then.
A file containing the MSDP data used in these plots is available here.
Figure 1 : Number of Internet Addresses Sourcing Multicast Traffic, and the total number of Groups involved.
Figure 1 shows the total size of the MSDP SA-Cache, and the number of ASM sources in use at any time.
There is one entry for each (S,G) pair. The number of ASM groups is also shown.
Figure 2 : An Estimate of the total Multicast Audience.
Figure 2 shows the
number of entries minus the number of groups. If each group represented a one to many broadcast, this
would equal to the number of active receivers.
Note : Figure 2 only reflects
group members that participate in either sourcing content or
sourcing RTCP like control information; a completely receive-only
group member cannot be monitored using MSDP.
Figure 3 : Average Number of ASM Sources Per Group
Figure 3 shows the ratio of the number of Multicast sources and the total
number of groups. This plot thus represents the average number of sources for each ASM group.
For the data used to make this plot, click
here
.
Figure 4 : The Number of Active Rendezvous Points / MSDP Peers versus time.
Figure 4 shows the number of MSDP Peers / Rendezvous Points (RP's) with multicast sources as a function of time.
Figure 5 : Number of Members in the Largest Active Group
Figure 5 shows the size, in terms of number of members, of the
largest SINGLE group as announced by MSDP. Again, this only reflects
group members that participate in either sourcing content or
sourcing RTCP like control information; a completely receive-only
group member cannot be monitored using MSDP.
Multicast Status Reports : For more info, click
here.
Please be advised that AmericaFree.TV makes no representation or
warranty (either express or implied) as to the accuracy or completeness of this report, and the reader
assumes all responsibility for any conclusions they may derive from the Report. Multicast
Technologies hereby expressly disclaims any and all liability relating to this report, including
without limitation any errors therein or omissions therefrom.
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Figure 2 : An Estimate of the total Multicast Audience.
Figure 3 : Average Number of ASM Sources Per Group
For the data used to make this plot, click here .
Figure 4 : The Number of Active Rendezvous Points / MSDP Peers versus time.
Figure 4 shows the number of MSDP Peers / Rendezvous Points (RP's) with multicast sources as a function of time.
Figure 5 : Number of Members in the Largest Active Group
Multicast Status Reports : For more info, click here.
Please be advised that AmericaFree.TV makes no representation or warranty (either express or implied) as to the accuracy or completeness of this report, and the reader assumes all responsibility for any conclusions they may derive from the Report. Multicast Technologies hereby expressly disclaims any and all liability relating to this report, including without limitation any errors therein or omissions therefrom.
