UNICOM |
5-4-6-1. IGMP Snooping
The
The Internet Group Management Protocol (IGMP) is an internal protocol of the Internet Protocol (IP) suite.
IP manages multicast traffic by using switches, routers, and hosts that support IGMP. Enabling IGMP allows the ports to detect IGMP queries, report packets, and manage IP multicast traffic through the switch. IGMP has three fundamental types of message:
Message | Description | |
Query | A message sent from the querier (IGMP router or switch) asking for a | |
response from each host belonging to the multicast group. | ||
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Report | A message sent by a host to the querier to indicate that the host wants | |
to be or is a member of a given group indicated in the report message. | ||
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Leave | A message sent by a host to the querier to indicate that the host has | |
ceased to be a member of a specific multicast group. | ||
Group | ||
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5-4-6-2. Static MAC Address
When you add a static MAC address, it remains in the switch's address table, regardless of whether the device is physically connected to the switch or not. This saves the switch from having to
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