Chapter 47 IGMP Commands

where

<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 <1,5,6~10>.

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.

Figure 179 IGMP Bandwidth Port Show Command Example

ras> switch igmpsnoop bandwidth port show 1

port

enable

bandwidth

------1

------ -----------

-

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47.6 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.

47.6.1 IGMP Count Disable Command

Syntax:

ras> switch igmpsnoop igmpcount disable <portlist>

where

<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 <1,5,6~10>.

This command turns off the IGMP count limit for the specified DSL port(s).

The following command turns off the IGMP count limit for port 4.

Figure 180 IGMP Count Disable Command Example

ras> switch igmpsnoop igmpcount disable 4

 

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IES-612-51A User’s Guide