All things related to multicast

[Joe Loiacono <>]

At 11:15 AM 03/17/2001 -0500, Marshall Eubanks wrote:
> It sounds like you could be mixing IGMP v1 and v2, as v1 leaves the group by
> timing out after something like 3 minutes.
>
> Marshall
>
> hitesh ruparel wrote:
> >
> > hi all..
> >
> > we at umkc are connected to internet2 via isp morenet...now when we try 
> to catch multicast feeds...we get them for 3 min ...then we are 
> disconnected for 3 min and then we catch the stream for another 3 min...
> >
> > our guess is that our isp's routers are sending a prune every 3 
> min...what could be the reasons for this ?

Yes, I've seen this before. In our case, I believe we inadvertantly had 
dense-mode on an intermediate link.