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ADSL2+ Modem Router DM111PSPv2 User Manual
Advanced Configuration 4-7
v1.0, December 2008
• WAN Interface. Forward packets to a WAN interface by selecting one from the drop-
down list.
6. Click Apply to save your changes and to add the static route to the routing table in the Static
Routes screen. To delete a static route from the routing table, click the trashbin icon in the
Delete column next to the static route that you want to delete.
IGMP Proxy
The Internet Group Management Protocol (IGMP) is an Internet protocol that provides a way for
an Internet computer to report its multicast group membership to adjacent routers. The hosts
interact with the system through the exchange of IGMP messages. When you configure IGMP
proxy, the router interacts with other routers through the exchange of IGMP messages. However,
when acting as the proxy, the router performs the host portion of the IGMP task as follows:
• When queried, the router sends membership reports to the group.
• When one of the hosts joins a multicast address group that none of other hosts belongs to, the
router sends unsolicited membership reports to that group.
• When the last host in a particular multicast group leaves the group, the router sends a leave
group membership report to that router’s group.
In the Advanced section of the main menu, select IGMP Proxy. The following screen displays:
To disable the IGMP proxy, deselect the check box.
Figure 4-4