Extreme Networks ExtremeWare 7.3.0, Command Reference Manual

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1494 ExtremeWare Software 7.3.0 Command Reference Guide
IP Multicast Commands
configure igmp snooping add static group
configure igmp snooping vlan <vlan name> ports <portlist> add static
group <ip address>
Description
Configures VLAN ports to receive the traffic from a multicast group, even if no IGMP joins have been
received on the port.
Syntax Description
Default
None.
Usage Guidelines
Use this command to forward a particular multicast group to VLAN ports. In effect, this command
emulates a host on the port that has joined the multicast group. As long as the port is configured with
the static entry, multicast traffic for that multicast group will be forwarded to that port.
The switch sends proxy IGMP messages in place of those generated by a real host. The proxy messages
use the VLAN IP address for source address of the messages. If the VLAN has no IP address assigned,
the proxy IGMP message will use 0.0.0.0 as the source IP address.
The multicast group should be in the class-D multicast address space, but should not be in the multicast
control subnet range (224.0.0.x/24).
If the ports also have an IGMP filter configured, the filter entries take precedence. IGMP filters are
configured using the command:
configure igmp snooping vlan <vlan name> ports <portlist> filter <access
profile>
Example
The following command configures a static IGMP entry so the multicast group 224.34.15.37 will be
forwarded to VLAN
marketing on ports 2:1-2:4:
configure igmp snooping marketing ports 2:1-2:4 add static group 224.34.15.37
History
This command was first available in ExtremeWare 7.1.0.
vlan name Specifies a VLAN name.
portlist Specifies one or more ports or slots and ports. On a modular switch, can be a
list of slots and ports. On a stand-alone switch, can be one or more port
numbers. May be in the form 1, 2, 3-5, 2:5, 2:6-2:8.
ip address Specifies the multicast group IP address.