3Com 5500-EI PWR - Removing Joined IGMP Groups from an Interface; Displaying and Maintaining IGMP

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z You must enable the PIM protocol on the interface before configuring the igmp proxy command.
Otherwise, the IGMP Proxy feature does not take effect.
z One interface cannot serve as the proxy interface for two or more interfaces.
z Generally, an interface serving as an IGMP querier cannot act as an IGMP proxy interface. If it is
necessary to configure an IGMP querier interface as an IGMP proxy interface, you must configure
the port that belongs to the proxy interface and connects to the upstream multicast device as a
static router port. For details, see
Configuring a Static Router Port.
Removing Joined IGMP Groups from an Interface
You can remove all the joined multicast groups from a particular interface or all interfaces of the switch,
or remove a particular multicast group address or group address range from a particular interface or all
interfaces.
Follow these steps to remove joined multicast groups from one or all interfaces:
To do... Use the command... Remarks
Remove the specified group or
all groups from the specified
interface or all interfaces
reset igmp group { all | interface
interface-type interface-number
{ all | group-address
[ group-mask ] } }
This command is available
in user view.
After a multicast group is removed from an interface, the multicast group can join the group again.
Displaying and Maintaining IGMP
To do... Use the command... Remarks
Display the membership
information of the IGMP
multicast group
display igmp group [ group-address |
interface interface-type
interface-number ]
Available in any
view
Display the IGMP configuration
and running information of the
interface
display igmp interface [ interface-type
interface-number ]
Available in any
view