UMN:CLI User Manual
SURPASS hiD 6615 S223/S323 R1.5
278 A50010-Y3-C150-2-7619
9 IP Multicast
Traditional IP network provided unicast transmission a host to send packets to a single
host or broadcast transmission. But multicast provides group transmission a host to send
packets to a group of all hosts. In the multicast environment, multicast packets are deliv-
ered to a group by duplicating multicast packets.
Multicasting is divided into Layer 3 multicast routing and Layer 2 IGMP snooping. The hiD
6615 S323 supports PIM-SM/SSM of multicast routing, and V1, V2 and V3 of IGMP
snooping.
Fig. 9.1 shows the example of IGMP snooping configuration network. In Layer 2 network,
the hiD 6615 S223/S323 is configured only for IGMP Snooping.
hiX 5430
Layer 2 Network
Layer 3 Network
Multicast Server
PIM-SM
Set-top Box
Set-top Box
Multicast data
IGMP Join/Leave
message
IGMP Snooping
Fig. 9.1 IGMP Snooping Configuration Network
If the hiD 6615 S323 is installed within Layer 3 network, PIM-SM should be configured.
Below the hiD 6615 S223/S323, there is a switch that performs IGMP snooping function
for subscribers.
hiX 5430
Layer 2 Network
Layer 3 Network
Multicast Server
PIM-SM
Set-top Box
Set-top Box
Multicast data
IGMP Join/Leave
message
IGMP Snooping
RP
Fig. 9.2 PIM-SM Configuration Network
You can configure IGMP Snooping with PIM-SM as
Fig. 9.3. If more than one port are on
the same interface and the hiD 6615 S323 is located in Layer 3 boundary, IGMP Snoop-
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