ZyXEL Communications AAM1212-51, Руководство пользователя, Страница: 155 / 435

AAM1212-51/53 Series User’s Guide
Chapter 17 IGMP 155
The following table describes the labels in this screen.
17.6 IGMP Filter Setup Screen
To open this screen, click Advanced Application , IGMP , Filter Setup . This screen is
discussed in Section 14.8 on page 129 .
17.7 IGMP Count Screen
Use this screen to limit the number of IGMP groups a subscriber on a port can join. This
allows you to control the distribution of multicast services (such as content information
distribution) based on service plans and types of subscription.
IGMP count is useful for ensuring the service quality of high bandwidth services like video or
Internet Protocol television (IPTV). IGMP count can limit how many channels (IGMP groups)
the subscriber connected to a DSL port can use at a time. If each channel requires 4~5 Mbps of
download bandwidth, and the subscriber’s connection supports 11 Mbps, you can use IGMP
count to limit the subscriber to using just 2 channels at a time. This also effectively limits the
subscriber to using only two IPTVs with the DSL connection.
To open this screen, click Advanced Application , IGMP , Count Setup .
Table 38 IGMP Setup
LABEL DESCRIPTION
IGMP Status Click IGMP Status to open the IGMP Setup screen where you can view current
IGMP information (see Section 17.3 on page 150 ).
Filter Setup Click Filter Setup to open the IGMP Filter Profile screen where you can
configure IGMP multicast filter profiles (see Section 17.6 on page 155 ).
IGMP Mode Select Proxy to have the device use IGMP proxy.
Select Snooping to have the device passively learn multicast groups.
Select Disable to have the device not use either IGMP proxy or snooping.
Apply Click Apply to save your IGMP mode settings.
Clicking Apply saves your changes to the AAM1212’s volatile memory. The
AAM1212 loses these changes if it is turned off or loses power, so use the
Config Save link on the navigation panel to save your changes to the non-
volatile memory when you are done configuring.