User`s guide

Vigor130 Series User’s Guide
108
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.
Available settings are explained as follows:
Item Description
Enable IGMP Proxy
Check this box to enable this function. The application of
multicast will be executed through WAN port. In addition,
such function is available in NAT mode.
Refresh
Click this link to renew the working multicast group status.
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.
P1
It indicates the LAN port used for the multicast group.