All things related to multicast

[Marshall Eubanks <>]

Simon Leinen wrote:

> >>>>> "me" == Marshall Eubanks 
> >>>>> <>
> >>>>>  writes:
> > Simon Leinen wrote:
> >> >>>>> "me" == Marshall Eubanks 
> >> >>>>> <>
> >> >>>>>  writes:
> >> > BTW, they now show 97 MSDP RP's and we show 86 RP's, so they can see
> >> > more of the multicast enabled Internet than we can.
> >>
> >> Interesting.  I don't know where this information comes from, but it
> >> might point to a problem.
>
> > Actually, that is a good question. I have to withdraw my estimate -
> > it is actually a count of the RP's with active SA's. I do not know
> > how they count RP's, but I wonder if they are doing something
> > similar. Our mbgp tables show routes to 321 Autonomous Systems -
> > shouldn't basically all of those have RP's ?
>
> If the counts are indeed of RPs with active SAs (which makes sense
> because I don't see how you can even learn about a remote RP which
> doesn't advertise any sources using MSDP), then the difference may
> just be due to different filters.
>
> TEN-155 doesn't currently filter MSDP announcements for the Norton
> Ghost discovery group, for instance, while you do (do you?).  So
> probably your router doesn't count those RPs which only announce North
> Ghost sources, which could explain the difference.
> --
> Simon.

Simon;

  Actually, we do NOT filter the Norton Ghost. If I remember correctly,
we originally thought it was the source of the MSDP storms in the period
after the storms started but before we realised they were due to RAMEN.
So, I am not sure that the Ghost actually caused the problems seen.

Does anyone care to comment on this ? Should one of us call up
Norton and complain, or was this a red herring ?
--
                                    Marshall

T.M. Eubanks
Multicast Technologies, Inc
10301 Democracy Lane, Suite 410
Fairfax, Virginia 22030
Phone : 703-293-9624
Fax     : 703-293-9609
e-mail : 

     


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