3Com Switch 4500 26-Port User Manual

IGMP Snooping Overview 155
Figure 46 Implementing IGMP Snooping
Tabl e 154 explains IGMP Snooping terminology.
Tab le 154 IGMP Snooping Terminology
Term Meaning
IGMP general query message Transmitted by the multicast router to query which multicast
group contains member. When a router port receives an
IGMP general query message, the Switch 4500 will reset the
aging timer of the port. When a port other than a router
port receives the IGMP general query message, the Switch
4500 will notify the multicast router that a port is ready to
join a multicast group and starts the aging timer for the port.
Internet
IGM P packets
A
Ethernet Switch
running IGMP Snooping
A router
running IGM P
IGMP packets
Switch 4500 running
IGMP Snooping

3Com Switch 4500 26-Port Specifications

General

Brand	3Com
Model	Switch 4500 26-Port
Category	Switch
Language	English