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GS728TS, GS728TPS, GS752TS, and GS752TPS Gigabit Smart Switches
6. Use the Multicast Router Expiry Time field to set the value for multicast router expiry time
of MLD Snooping for the specified VLAN ID. Valid range is 0 to 3600.
7. Click Add to enable MLD Snooping on the specified VLAN.
8. Click Delete to disable MLD Snooping on the specified VLAN.
9. Click Apply to apply the new settings to the switch. Configuration changes take effect
immediately
10. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
11. Click Refresh to update the page with the latest information from the switch.
Multicast Router Configuration
In addition to building and maintaining lists of multicast group memberships, the Snooping
switch also maintains a list of multicast routers. When forwarding multicast packets, they
should be forwarded on ports that have joined using MLD/IGMP and also on ports on which
multicast routers are attached. In MLD/IGMP, there is only one active querier. This means
that all other routers on the network are suppressed and are not detectable by the switch. If a
query is not received on an interface within a specified length of time (multicast router
present expiration time), then that interface is removed from the list of interfaces with
multicast routers attached. The multicast router present expiration time is configurable via
management. The default value for the multicast router expiration time is zero, which
indicates an infinite timeout, that is, no expiration.
To access the Multicast Router Configuration page, click Switchingï€
 Multicast  MLD
Snooping
 Multicast Router Configuration.
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