multicast nightmare #42 - REDUX

Wed Oct 14 16:52:08 UTC 2009

More info if this helps:

Switch Platform:
4500 SUPII+
with gig line cards

Data rate is <100Mbps

Server OS: Windows 2003 R2 (please withhold snickering).

----- Original Message ----
From: Philip Lavine <source_route at yahoo.com>
To: nanog <nanog at merit.edu>
Sent: Wed, October 14, 2009 8:19:51 AM
Subject: multicast nightmare #42

Please explain how this would be possible:

1 sender
1 mcast group
1 receiver
----------------
= no data loss

1 sender
1 mcast group
2+ receivers on same VLAN and physical segment
--------------------
= data loss