H3C Technologies H3C S10500 Series Switches - Manual (Page 53)

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To do... Use the command... Remarks
Display information about IGMP
snooping groups (in IRF mode)
display igmp-snooping group [ vlan vlan-id ]
[ chassis chassis-number slot slot-number ]
[ verbose ] [ | { begin | exclude | include }
regular-expression ]
Available in
any view
Display information about the hosts
tracked by IGMP snooping (in
standalone mode)
display igmp-snooping host vlan vlan-id group
group-address [ source source-address ] [ slot
slot-number ] [ | { begin | exclude | include }
regular-expression ]
Available in
any view
Display information about the hosts
tracked by IGMP snooping (in IRF
mode)
display igmp-snooping host vlan vlan-id group
group-address [ source source-address ] [ chassis
chassis-number slot slot-number ] [ | { begin |
exclude | include } regular-expression ]
Available in
any view
Display static multicast MAC address
entries
display mac-address [ mac-address [ vlan
vlan-id ] | [ multicast ] [ vlan vlan-id ] [ count ] ] [ |
{ begin | exclude | include } regular-expression ]
Available in
any view
Display the statistics information of
IGMP messages learned by IGMP
snooping
display igmp-snooping statistics [ | { begin |
exclude | include } regular-expression ] Available in
any view
Remove all the dynamic group entries of
a specified IGMP snooping group or all
IGMP snooping groups
reset igmp-snooping group { group-address |
all } [ vlan vlan-id ] Available in
user view
Clear the statistics information of all
kinds of IGMP messages learned by
IGMP snooping
reset igmp-snooping statistics
Available in
user view
NOTE:
•
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 remove the static group entries of IGMP snooping
groups.
IGMP snooping configuration examples
Group policy and simulated joining configuration example
Network requirements
• As shown in Figure 14 , Router A connects to the multicast source through GigabitEthernet 1/0/2
and to Switch A through GigabitEthernet 1/0/1.
• IGMPv2 runs on Router A, IGMPv2 snooping runs on Switch A, and Router A acts as the IGMP
querier on the subnet.
• The receivers, Host A and Host B, can receive multicast traffic addressed to multicast group 224.1.1.1
only.
• Multicast data for group 224.1.1.1 can be forwarded through GigabitEthernet 1/0/3 and
GigabitEthernet 1/0/4 of Switch A even if Host A and Host B accidentally, temporarily stop