H3C Technologies H3C S3100 Series Switches - Manual (Page 250)

Operation Manual – Multicast
H3C S3100-52P Ethernet Switch Chapter 2 IGMP Snooping Configuration
2-13
Note:
z
One port can belong to only one multicast VLAN.
z
The port connected to a user end can only be a hybrid port.
z
The multicast member port must be in the same VLAN with the router port.
Otherwise, the multicast member port cannot receive multicast packets.
z
When a router port is added to a multicast VLAN, the router port must be set as a
Trunk port or tagged Hybrid port. Otherwise, all the multicast member ports in this
multicast VLAN cannot receive multicast packets.
z
When the multicast VLAN is set up, all IGMP host report messages are broadcast in
the multicast VLAN only. For a multicast member port of a non-multicast VLAN, its
VLAN interface cannot establish the corresponding Layer 2 multicast entry.
Therefore, you are recommended to delete the port from the multicast VLAN.
2.3 Displaying and Maintaining IGMP Snooping
After the configuration above, you can execute the display command in any view to
verify the configuration by checking the displayed information.
You can execute the reset command in user view to clear the statistics information
about IGMP Snooping.
Table 2-13
Display information about IGMP Snooping
Operation Command Description
Display the current IGMP
Snooping configuration
display igmp-snooping
configuration
Display IGMP Snooping
message statistics
display igmp-snooping
statistics
Display IP and MAC
multicast groups in one or
all VLANs
display igmp-snooping
group
[ vlan vlanid ]
You can execute the
display
commands in any
view.
Clear IGMP Snooping
statistics
reset igmp-snooping
statistics
You can execute the
reset
command in user
view.
2.4 IGMP Snooping Configuration Example
2.4.1 Example 1
Configure IGMP Snooping on a switch.