User`s manual

228
DWS-1008 User’s Manual
D-Link Systems, Inc.
Conguring and Managing IGMP Snooping
DWS-1008 User’s Manual
Conguring Static Multicast Ports
A DWS-1008 switch learns about multicast routers and receivers from multicast trafc it
receives from those devices. When the switch receives trafc from a multicast router or
receiver, the switch adds the port that received the trafc as a multicast router or receiver
port. The switch forwards trafc to multicast routers only on the multicast router ports and
forwards trafc to multicast receivers only on the multicast receiver ports.
The router and receiver ports that the switch learns based on multicast trafc age out if they
are unused. You can add network ports as static multicast router ports or multicast receiver
ports. Ports you add do not age out.
Note. You cannot add access ports or wired authentication ports as static multicast ports.
However, MSS can dynamically add these port types to the list of multicast ports based on
multicast trafc.
Adding or Removing a Static Multicast Router Port
To add or remove a static multicast router port, use the following command:
set igmp mrouter port port-list enable | disable
Adding or Removing a Static Multicast Receiver Port
To add a static multicast receiver port, use the following command:
set igmp receiver port port-list enable | disable
Displaying Multicast Information
You can use the CLI to display the following IGMP snooping information:
• Multicast conguration information and statistics
• Multicast queriers
• Multicast routers
• Multicast receivers
Displaying Multicast Conguration Information and Statistics
To display multicast conguration information and statistics, use the following command:
show igmp [vlan vlan-id]
The show igmp command displays the IGMP snooping state, the settings of all multicast
parameters you can congure, and multicast statistics.