IGMP Snooping 171
Figure 39 Multicast packet transmission without IGMP Snooping
When IGMP Snooping operates, packets are not forwarded to all ports, see
Figure 40.
Figure 40 Multicast packet transmission when IGMP Snooping runs
IGMP Snooping Terminology
Tabl e 176 explains switching terminology relevant to IGMP Snooping.
Tab le 176 Switching Terminology relevant to IGMP Snooping
Term Meaning
Router Port The port of the switch, directly connected to the multicast
router.
Multicast member port The port connected to the multicast member. The multicast
member refers to a host that joined a multicast group.
MAC multicast group The multicast group is identified with MAC multicast address
and maintained by the Switch 5500G-EI.
Internet / Intranet
Video stream
VOD Server
Layer 2 Ethernet Switch
Video stream
Multicast group member Non-multicast
group member
Multicast router
Video stream
Video stream
Video stream
Non-multicast
group member
Switch 5500
Internet / Intranet
Video stream
VOD Server
Layer 2 Ethernet Switch
Video stream
Multicast group member Non-multicast
group member
Multicast router
Video stream
Video stream
Video stream
Non-multicast
group member
Switch 5500
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