Configuring Internet Group Management Protocol (Igmp) - Cisco RV 120W Administration Manual

Configuring Networking
Configuring the Local Area Network (LAN)
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STEP 2
STEP 3
Cisco RV 120W Administration Guide
You must configure a fixed (static) IP address for the endpoint that will be
designated as the DMZ host. The DMZ host should be given an IP address in the
same subnet as the router's LAN IP address but it cannot be identical to the IP
address given to the LAN interface of this gateway.
Choose Networking > LAN > DMZ Host.
Check the Enable box to enable DMZ on the network.
Enter the IP address for the endpoint that will receive the redirected packets. This
is the DMZ host.
Click Save. You must then configure firewall rules for the zone. See
Firewall Rules, page

Configuring Internet Group Management Protocol (IGMP)

Internet Group Management Protocol (IGMP) is an exchange protocol for routers.
Hosts that want to receive multicast messages need to inform their neighboring
routers of their status. In some networks, each node in a network becomes a
member of a multicast group and receives multicast packets. In these situations,
hosts exchange information with their local routers using IGMP. Routers use IGMP
periodically to check if the known group members are active. IGMP provides a
method called dynamic membership by which a host can join or leave a multicast
group at any time.
To configure IGMP:
Choose Networking > LAN > IGMP Configuration.
Check the Enable box to allow IGMP communication between the router and other
nodes in the network.
Click Save.
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