All things related to multicast

[Marshall Eubanks <>]

Russ Hobby wrote:

> A few months back at a CENIC TAC meeting I polled the member campuses about
> the state of multicast and found that several campus had backslid and had
> less multicast penetration then a couple of years ago.  Most of those that
> backslid indicated it was because that they installed new equipment
> (usually routers) and had not turned on multicast, either because they saw
> no demand to do so, or the new equipment was different to configure
> multicast and they had not figured it out yet (again demand would have made
> a difference).  A couple of other cases  multicast was turned off because
> people did start using it, but that broke unicast (or all networking).
>
> The latter was the case here at UC Davis.  We have an ATM Backbone running
> LANE.  Muitcast goes thorough the Broadcast Unknown Servers, a limited
> resource.  So when multicast traffic got to the point where it was swamping
> the servers, netops just turned it all off and will only turn on multicast
> on special request to specific locations.  Fortunately the ATM network is
> scheduled to be replaced in a couple of months.
>
> Russ

Uh, what _was_ that traffic ? Isn't ATM at least 155 mbps - that seems like
a lot of multicast video traffic at the present time. Or is this a NBMA issue 
?


--
                                 Regards
                                 Marshall Eubanks



T.M. Eubanks
Multicast Technologies, Inc
10301 Democracy Lane, Suite 410
Fairfax, Virginia 22030
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