Comtrend Corporation NexusLink 3120 User Manual page 53

Enable IGMP Snooping:
Standard Mode: In standard mode, multicast traffic will flood to all
bridge ports when no client subscribes to a multicast group
even if IGMP snooping is enabled.
Blocking Mode: In blocking mode, the multicast data traffic will be blocked and not
flood to all bridge ports when there are no client subscriptions to any
multicast group.
Enable IGMP LAN to LAN Multicast: Select Enable from the drop-down menu to
allow IGMP LAN to LAN Multicast forwarding
Enable Enhanced IGMP: Enable by ticking the checkbox . IGMP packets
between LAN ports will be blocked.
Enable LAN side firewall: Enable by ticking the checkbox .
DHCP Server: To enable DHCP, select Enable DHCP server and enter Start and
End IP addresses and the Leased Time. This setting configures the
router to automatically assign IP, default gateway and DNS server
addresses to every PC on your LAN.
Setting TFTP Server: Enable by ticking the checkbox . Then, input the TFTP
Enable Automatic Static IP Reservation: The Automatic Static IP Reservation
function supports automatically adding DHCP client IP & MAC
address to the static IP pool. When enabled, connected DHCP
clients will be added to the static IP list and always receive the
same IP address.
Static IP Lease List: A maximum of 32 entries can be configured.
To add an entry, enter MAC address and Static IP address and then click
Apply/Save.
To remove an entry, tick the corresponding checkbox  in the Remove column and
then click the Remove Entries button, as shown below.
server address or an IP address.
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