Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 2 IGMP Configuration Commands
3Com Corporation
2-2
Parameter
group-address: Multicast group address.
interface-type interface-number: Interface type and interface number of the router,
used to specify the interface.
local: Information of the local interface which receives and sends multicast data.
Description
Use the display igmp group command to view the member information of the IGMP
multicast group.
You can specify to view the information of a group or the member information of the
multicast group on an interface. The information displayed includes the multicast
groups joined through IGMP and those joined statically through command lines by the
downstream host.
Related command: igmp host-join.
Example
# Display the member information of the directly connected sub-network.
<3Com> display igmp group
LoopBack0 (20.20.20.20): Total 3 IGMP Groups reported:
Group Address Last Reporter Uptime Expires
225.1.1.1 20.20.20.20 00:02:04 00:01:15
225.1.1.3 20.20.20.20 00:02:04 00:01:15
225.1.1.2 20.20.20.20 00:02:04 00:01:17
Table 2-1 Description on the fields of display ip igrmp group command
Item Description
Group address Multicast group address
Last Reporter
Report the last host which becomes the
multicast group member
Uptime
The time since the multicast group is
found (hour, minute, second)
Expires
The predicted time when the record will
be removed from the IGMP group table
(hour, minute, second)
2.1.3 display igmp interface
Syntax
display igmp interface [ interface-type interface-number ]