Chapter 47 IGMP Commands
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
ras> | statistics igmpsnoop port group | 1 | |
port | vid mcast_ip | source ip |
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47.8Multicast VLAN Commands
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.
47.8.1 Multicast VLAN Set Command
Syntax:
ras> switch igmpsnoop mvlan set <vid> <portlist>:<F<TU>X> [<portlist>:<F<TU>X> ...] [name]
where
<vid> | = | The VLAN ID [1 – 4094]. |
<portlist> | = | You can specify a single port: <1>, all ports: <*>, a list of |
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| ports: <1,3,enet1>, you can also include a range of ports: |
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| <1,5,6~10,enet1,enet2>. |
<F<TU> | = | The <F> stands for a fixed registrar administration control |
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| flag and registers a <port #> to the static VLAN table with |
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| <vid>. |
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| For a fixed port, you also have to specify <TU>, the tag |
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| control flag. |
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| <T> has the device add an IEEE 802.1Q tag to frames going |
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| out through this port(s). |
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| <U> has the device send frames out through this port(s) |
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| without an IEEE 802.1Q tag. |
X> | = | This is the registrar administration control flag. |
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| <X> stands for forbidden and blocks a <port #> from |
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| joining the static VLAN table with <vid>. |
[name] | = | A name to identify the SVLAN entry. |
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 Section 45.4.4 on page 301 for examples and more information.
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