CTC Union GSW-3420FM, Руководство пользователя

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7.9.3 IP Multicast
1. IGMP Snooping
IGMP is an acronym for Internet Group Management Protocol. It is a
communications protocol used to manage the membership of Internet Protocol
multicast groups. IGMP is used by IP hosts and adjacent multicast routers to
establish multicast group memberships. It is an integral part of the IP multicast
specification, like ICMP for unicast connections. IGMP can be used for online
video and gaming, and allows more efficient use of resources when supporting
these uses.
IGMP snooping is the process of listening to Internet Group Management
Protocol (IGMP) network traffic. The feature allows a network switch to listen in
on the IGMP conversation between hosts and routers. By listening to these
conversations the switch maintains a map of which links need which IP
multicast streams. Multicasts may be filtered from the links which do not need
them and thus controls which ports receive specific multicast traffic.
Configuration by Web :
Global Basic and Port Related Configuration :
[Configuration] -> [IPMC] -> [IGMP Snooping] -> [Basic Configuration]
Click “
?
” at this web page to get details of the settings.
IGMP Snooping VLAN Configuration :
[Configuration] -> [IPMC] -> [IGMP Snooping] -> [VLAN Configuration]
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