ZyXEL Communications IES-612-51A User Manual

 Chapter 47 IGMP Commands

IES-612-51A User’s Guide

This command displays the IGMP groups a port joins. The following figure shows an example 
for port 1.

Figure 187   IGMP Port Group Statistics Command Example 

Use these commands to configure VLAN multicast settings and set multicast port members. 

Multicast VLAN allows one single multicast VLAN to be shared among different subscriber 
VLANs on the network. This improves bandwidth utilization by reducing multicast traffic in 
the subscriber VLANs and simplifies multicast group management.

Syntax:

  ras> switch igmpsnoop mvlan set <vid> <portlist>:<F<T|U>|X> 

[<portlist>:<F<T|U>|X> ...] [name]

where

This command creates a multicast VLAN and sets the allowed/blocked port member(s).

This command is similar to the command to create a regular VLAN. See 

 for examples and more information.

ras> statistics igmpsnoop port group 1

port   vid mcast_ip        source ip

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

<vid>

=

The VLAN ID [1 – 4094].

<portlist>

=

You can specify a single port: <1>, all ports: <*>, a list of 
ports: <1,3,enet1>, you can also include a range of ports: 
<1,5,6~10,enet1,enet2>.

<F<T|U>|

=

The <F> stands for a fixed registrar administration control 
flag and registers a <port #> to the static VLAN table with 
<vid>.

For a fixed port, you also have to specify <T|U>, the tag 
control flag.
<T> has the device add an IEEE 802.1Q tag to frames going 
out through this port(s).
<U> has the device send frames out through this port(s) 
without an IEEE 802.1Q tag.

|X>

=

This is the registrar administration control flag.

<X> stands for forbidden and blocks a <port #> from 
joining the static VLAN table with <vid>.

[name]

=

A name to identify the SVLAN entry.