Nortel Networks manual BayStack 450 Switch Filtering IP Multicast Streams 1

Using the BayStack 450 10/100/1000 Series Switch

One client, connected to S2, responds with a host membership report. Switch S2 intercepts the report from that port, and generates a proxy report to its upstream neighbor, S1. Also, two clients connected to S4 respond with host membership reports, causing S4 to intercept the reports and to generate a consolidated proxy report to its upstream neighbor, S1.

Internet

S1

Designated

router

Consolidated	Host
report	membership
	query
BayStack 450-24T
Switch

Proxy

Proxy S2

BayStack 450-24T

Switches

S3

Host	BayStack 450-24T
	Switch
membership
	Host
report
	membership
S4
	report

BS45022B

Figure 1-32. BayStack 450 Switch Filtering IP Multicast Streams (1 of 2)

Switch S1 treats the consolidated proxy reports from S2 and S4 as if they were reports from any client connected to its ports, and generates a consolidated proxy report to the designated router. In this way, the router receives a single consolidated report from that entire subnet.

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