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channel switching application. Without this feature, the switch discards IGMP reports for new groups,
and the user cannot change to the new channel.
Configuration restrictions and guidelines
When you enable the multicast group replacement feature, follow these guidelines:
•
This configuration takes effect only on the multicast groups that a port joins dynamically.
•
You can enable this feature globally for all ports in IGMP-snooping view or for a port in interface
view. For a port, the port-specific configuration takes priority over the global configuration.
Configuration procedure
To enable the multicast group replacement feature globally:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter IGMP-snooping view.
igmp-snooping
N/A
3.
Enable the multicast group
replacement feature globally.
overflow-replace
[
vlan vlan-list
]
By default, the multicast group
replacement feature is disabled
globally.
To enable the multicast group replacement feature on a port:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface interface-type
interface-number
N/A
3.
Enable multicast group
replacement feature on a
port.
igmp-snooping
overflow-replace
[
vlan vlan-list
]
By default, the multicast group
replacement feature is disabled
on a port.
Displaying and maintaining IGMP snooping
Execute
display
commands in any view and
reset
commands in user view.
Task Command
Display IGMP snooping status.
display
igmp-snooping
[
global
|
vlan
vlan-id
]
Display dynamic IGMP snooping group
entries.
display igmp-snooping
group
[
group-address
|
source-address
] * [
vlan
vlan-id
] [
verbose
] [
slot
slot-number
]
Display static IGMP snooping group
entries.
display igmp-snooping
static
-
group
[
group-address
|
source-address
] * [
vlan
vlan-id
] [
verbose
] [
slot
slot-number
]
Display dynamic router port information.
display igmp-snooping
router-port
[
vlan
vlan-id
] [
slot
slot-number
]
Display static router port information.
display igmp-snooping
static-router-port
[
vlan
vlan-id
]
[
slot
slot-number
]
Display statistics for the IGMP messages
learned through IGMP snooping.
display igmp-snooping statistics
