Nortel BayStack 450 Using Manual page 77

After the switches learn which ports are requesting access to the IP Multicast
stream, all other ports not responding to the queries are blocked from receiving the
IP Multicast
Internet
S1
S2
S4
Figure 1-33. BayStack 450 Switch Filtering IP Multicast Streams (2 of 2)
The consolidated proxy report generated by the switch remains transparent to
layer 3 of the International Organization for Standardization, Open Systems
Interconnection (ISO/OSI) model. (The switch IP address and MAC address are
not part of proxy report generation.) The last reporting IGMP group member in
each VLAN represents all of the hosts in that VLAN and IGMP group.
302401-D Rev 00
(Figure 1-33).
Designated
router
BayStack 450-24T
Switch
BayStack 450-24T
Switches
BayStack 450-24T
Switch
BayStack 450 10/100/1000 Series Switches
Host
membership
query
S3
Key
Multicast stream
BS45023B
1-51