Configuring IGMP-snooping settings
You need to configure global IGMP-snooping settings and then configure IGMP-snooping settings on a FortiSwitch unit.
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You cannot use IGMP snooping when network access control (NAC) has been enabled on a global scale with |
This section covers the following topics:
Configuring global IGMP-snooping settings
Use the following commands to configure the global IGMP-snooping settings.
Aging time is the maximum number of seconds that the system will retain a multicast snooping entry. Enter an integer value from 15 to 3600. The default value is 300.
The flood-unknown-multicast setting controls whether the system will flood unknown multicast messages within the VLAN.
config switch-controller igmp-snooping
set aging-time <15-3600>
set flood-unknown-multicast {enable | disable}
end
Configuring IGMP-snooping settings on a switch
IGMP snooping allows the FortiSwitch to passively listen to the Internet Group Management Protocol (IGMP) network traffic between hosts and routers. The switch uses this information to determine which ports are interested in receiving each multicast feed. FortiSwitch can reduce unnecessary multicast traffic on the LAN by pruning multicast traffic from links that do not contain a multicast listener.
NOTE: When an inter-switch link (ISL) is formed automatically in FortiLink mode, the igmps-flood-reports and igmps-flood-traffic options are disabled by default.
Use the following commands to configure IGMP settings on a FortiSwitch port:
config switch-controller managed-switch
edit <FortiSwitch_serial_number>
config ports
edit <port_name>
set igmps-flood-reports {enable | disable}
set igmps-flood-traffic {enable | disable}
end
end
For example:
config switch-controller managed-switch
edit S524DF4K15000024
config ports
edit port3
set igmps-flood-reports enable
set igmps-flood-traffic enable
end
end