Igmp Snooping Configuration Examples - 3Com Switch 4800G 24-Port Configuration Manual

570 C 42: IGMP S
HAPTER
IGMP Snooping
Configuration
Examples
Configuring Simulated
Joining
C
NOOPING ONFIGURATION
To do...
View the statistics information of
IGMP messages learned by IGMP
Snooping
Clear IGMP Snooping multicast
group information
Clear the statistics information of
all kinds of IGMP messages
learned by IGMP Snooping
n
The reset igmp-snooping group command works only on an IGMP
■
Snooping-enabled VLAN, but not on a VLAN with IGMP enabled on its VLAN
interface.
The reset igmp-snooping group command cannot clear IGMP Snooping
■
forwarding table entries for static joins.
Network requirements
As shown in Figure 172, Router A connects to the multicast source through
■
GigabitEthernet 1/0/2 and to Switch A through GigabitEthernet 1/0/1. Router
A is the IGMP querier on the subnet.
IGMP is required on Router A, IGMP Snooping is required on Switch A, and
■
Router A will act as the IGMP querier on the subnet.
Perform the following configuration so that multicast data can be forwarded
■
through GigabitEthernet 1/0/3 and GigabitEthernet 1/0/4 even if Host A and
Host B temporarily stop receiving multicast data for some unexpected reasons.
Network diagram
Figure 172 Network diagram for simulated joining configuration
Source
GE1/0/2
1 .1.1.2/24
1.1.1.1/24
Use the command...
display igmp-snooping statistics
reset igmp-snooping group
{ group-address | all } [ vlan vlan-id ]
reset igmp-snooping statistics
Vlan100
GE 1/0/1
10 .1 .1.1/24 GE1 /0/1
Router A Switch A
IGMP querier
Receiver
Host A
Receiver
GE1/0/4
GE 1/0/3
Host B
GE1/0/2
Host C
Remarks
Available in
any view
Available in
user view
Available in
user view