Igmp - Draytek Vigor 2925 Series User Manual

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.
4 . 1 1 . 7 I G M P
4 . 1 1 . 7 I G M P
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
Enable IGMP Proxy
Enable IGMP Snooping
Refresh
Group ID
P1 to P5
After finishing all the settings here, please click OK to save the configuration.
Description
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.
Check this box to enable this function. Multicast traffic will
be forwarded to ports that have members of that group.
Disabling IGMP snooping will make multicast traffic
treated in the same manner as broadcast traffic.
Click this link to renew the working multicast group status.
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.
It indicates the LAN port used for the multicast group.
275 Vigor2925 Series User's Guide