ZyXEL Communications IES-1248-51A, User Manual

Page: 430 / 654

Chapter 58 IGMP Commands
IES-1248-51V User’s Guide
430
58.4.1 IGMP Bandwidth Port Show Command Example
The following example displays the bandwidth budget for port 1.
58.5 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 an xDSL 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 xDSL connection.
58.5.1 IGMP Count Disable Command Example
The following command turns off the IGMP count limit for port 4.
ras> switch igmpsnoop bandwidth port show 1
port enable bandwidth
------ ------ -----------
1 - 4096
Table 159 IGMP Count Limit Command Summary
COMMAND DESCRIPTION P
switch igmpsnoop igmpcount
disable < portlist >
Turns off the IGMP count limit for the specified xDSL
port(s). H/H
switch igmpsnoop igmpcount
enable < portlist >
Turns on the IGMP count limit for the specified xDSL
port(s). H/H
switch igmpsnoop igmpcount set
< portlist > < count >
Sets the IGMP count limit for the specified xDSL
port(s).
count
: 0~16; the maximum number of IGMP groups
subscribers on the specified port(s) can join.
H/H
switch igmpsnoop igmpcount show
[ portlist ]
Displays the IGMP count limit setting status for the
specified xDSL port(s). M/L
ras> switch igmpsnoop igmpcount disable 4