[nsp] Multicast Ghost

Tony Wasson ajwasson@inficad.com
Tue, 5 Nov 2002 14:09:57 -0700


> Hi, I'd like to see if anyone else is seeing the same problems with
> ghost multicast 7.5 that I'm seeing.
>
> We run ghost multicast to image workstations without a problem in
> sites that are served by a 2620, with a fractional T to the datacenter.

I have not seen the bugs you are describing, but I will tell you my run in
and work around for multicast Ghost on an Ethernet/IP network.
We had 100Mbps Ghost Multicasts that melted our switched network before
anyone had turned on IGMP. So we turned on IGMP and filtered the default
G.S.T. Multicast MAC address in our our WAN Edge switches. You could do this
at each edge router if your switches can't drop traffic by MAC address.


http://www.dante.net/nep/GEANT-MULTICAST/deployment-msdp.html
lists the GHOST Default IP as 229.55.150.208/32
http://www.hep.ucl.ac.uk/~ytl/multi-cast/addresstranslation_01.html
Quick (but possibly wrong) Multicast MAC should be: 00:00:5e:37:96:d0

Hope this helps,
Tony Wasson