Draytek Vigor C410 Series User Manual page 143

II-1-12 IGMP
Internet Group Management Protocol (IGMP) is an IPv4 communication protocol for establishing
multicast group memberships.
II-1-12-1 General Setup
This page offers the general setting for configuring the IGMP function.
Available settings are explained as follows:
Item
IGMP Version
IGMP Proxy
Interface
Query Interval
IGMP encapsulation in
PPPoE
IGMP Snooping
IGMP Fast Leave
Description
Select v2 or v3 or Auto. At present, two versions (v2 and v3) are
supported by Vigor router. Choose the correct version based on the
IPTV service you subscribe.
IGMP Proxy
Switch the toggle to enable or disable the function.
The application of multicast will be executed through WAN /PVC/VLAN
port. In addition, such function is available in NAT mode.
Specify an interface for packets passing through.
Vigor router will periodically check which IP obtaining IPTV service by
sending query. It might cause inconvenience for client. Therefore, set
a suitable time (unit: second) as the query interval to limit the
frequency of query sent by Vigor router.
It depends on the specifications regulated by each ISP. If you have no
idea to enable or disable, simply contact your ISP providers.
IGMP Snooping
Select to enable IGMP Snooping so that multicast traffic will be
forwarded to IGMP clients that have joined a multicast group.
This option is shown only when IGMP Snooping is enabled. Select to
enable IGMP Fast Leave.
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