ZyXEL Communications SAM1316-22, User Manual

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Chapter 52 IGMP Commands
SAM1316-22 User’s Guide
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where
This command displays the multicast bandwidth setting on the specified port(s)
and whether or not this setting is active. The following example displays the
bandwidth budget for port 1.
52.6 IGMP Count Limit Commands
Use these commands 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.
52.6.1 IGMP Count Disable Command
Syntax:
ras> switch igmpsnoop igmpcount disable <portlist>
where
This command turns off the IGMP count limit for the specified DSL port(s).
<portlist> =
You can specify a single DSL port <1>, all DSL ports
<*> or a list of DSL ports <1,3,5>. You can also include
a range of ports <1,5,6~8>.
Figure 181 IGMP Bandwidth Port Show Command Example
ras> switch igmpsnoop bandwidth port show 1
port enable bandwidth
------ ------ -----------
1 - 4096
<portlist> =
You can specify a single DSL port <1>, all DSL ports
<*> or a list of DSL ports <1,3,5>. You can also include
a range of ports <1,5,6~8>.