3Com 7750 Series Command Reference Manual page 538

3Com Switch 7750 Series
Command Reference Guide – Multicast
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Parameter
vlan vlan-id: Displays the VLAN where the multicast group information lies. If this
keyword is not specified, the command displays the multicast group information in all
VLANs.
ip-address: IP address of the multicast group to be displayed.
Description
Use the display mpm group command to display the information about the IP
multicast groups and MAC multicast groups in the specified VLAN or all the VLANs on
the switch.
The displayed information includes:
VLAN identifier
Router port
Address of the IP multicast group
Member ports in the IP multicast group
MAC multicast group
Address of the MAC multicast group
Member ports in the MAC multicast group
Caution:
The fields of this command are similar to those of the display igmp group
command, except that the information of the specific ports is added.
The fields of this command are the same as those of the display igmp-snooping
group command except that the displayed VLANs are of different attributes.
The display igmp-snooping group command displays the information about ports
joining in layer-2 multicast groups in IGMP-snooping-enabled VLANs, while the
display mpm group command displays the information about ports joining in
layer-3 multicast groups in IGMP-enabled VLANs.
Example
# Display the information about multicast groups in VLAN 2.
<3Com> display mpm group vlan 1200
Chapter 2 Common IP Multicast Configuration Commands
2-3