Figure4-15 IGMP Snooping
Internet Group Management Protocol (IGMP) is an internal protocol of IP
station. By supporting IGMP’s switch, router and PC, IP manages
multicasting. When IGMP is started up, the port can check the query packets
and reports packets, and manage IP multicast flow by switch. There are three
types of info for IGMP: Query, the message from IGMP router or switch, this
message request each PC OF multicast group to send a response; Report, the
message PC send to query-maker for indicating the member the PC wants or
the message marks; Leave group, the message PC send to query-maker for
indicating the PC has left the relevant multicast group.
4.4.6.2
Static MAC Address
Click “Static MAC Address”:
Figure4-16 Static MAC Address
When a static MAC address is added, it will stay in the switch’s address table
for either connection or disconnection between switch and physical devices.
When power supply or connection is restart, the switch does not need to study
the MAC address. To add as below:
１
.
Types a MAC address whose flow the port will always forward in the
address table.
２
.
Typing port number.
