Draytek VIGOR120 User's Guide Page 68

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Vigor120 Series User’s Guide
61
The UPnP function dynamically adds port mappings on behalf of some UPnP-aware
applications. When the applications terminate abnormally, these mappings may not be
removed.
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IGMP is the abbreviation of Internet Group Management Protocol. It is a communication
protocol which is mainly used for managing the membership of Internet Protocol multicast
groups.
Enable IGMP Proxy Check this box to enable this function. The application of
multicast will be executed through WAN port.
Group ID This field displays the ID port for the multicast group. The
available range for IGMP starts from 224.0.0.0 to
239.255.255.254.
Refresh Click this link to renew the working multicast group status.
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For the system setup, there are several items that you have to know the way of configuration:
Status, Administrator Password, Configuration Backup, Syslog, Time setup, Reboot System,
Firmware Upgrade.
Below shows the menu items for System Maintenance.
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