3Com Router 3031, Command Reference Manual

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698 C
HAPTER
7: M
ULTICAST
C
OMMON
C
ONFIGURATION
C
OMMANDS
Example
Enable all IGMP debugging functions
<3Com> debugging igmp all
display igmp group Syntax
display igmp group [ group-address | interface interface-type interface-number |
local ]
View
Any view
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
Using the display igmp group command, you can 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.
For the related command, see 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 1 Description of Output Information of Display IP IGRMP Group Command
display igmp interface Syntax
display igmp interface [ interface-type interface-number ]
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)