Chapter 13 WAN
NBG-419N v2 User’s Guide
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13.6 IGMP Blocking Screen
Use this screen to enable IGMP blocking (snooping) if you have LAN users that subscribe to
multicast services.
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership
in a multicast group - it is not used to carry user data.
Click Network > WAN > IGMP Blocking. The screen appears as shown.
Figure 91 Network > WAN > IGMP Blocking
The following table describes the labels in this screen.
Table 58 Network > WAN > IGMP Blocking
LABEL DESCRIPTION
IGMP Block Setup
Enable IGMP
Block
Select this option to have the Router use IGMP blocking (snooping).
Check the LAN port/s to which IGMP snooping applies.
Apply Click Apply to save your changes back to the Router.
Reset Click Reset to begin configuring this screen afresh.
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