Displaying Igmp Snooping Multicast Forwarding Entries - HP 1920 Gigabit Ethernet Switch Series User Manual

Table 84 Configuration items
Item
Port
VLAN ID
Group Limit
Fast Leave
Displaying IGMP snooping multicast forwarding
entries
1. From the navigation tree, select Network > IGMP snooping.
2. Click Show Entries to display information about IGMP snooping multicast forwarding entries.
Figure 232 Displaying entry information
3. To display detailed information about an entry, click the
Description
Select the port on which advanced IGMP snooping features will be configured. The port
can be an GigabitEthernet port or Layer 2 aggregate interface.
After a port is selected, advanced features configured on this port are displayed at the
lower part of this page.
TIP:
The advanced IGMP snooping configurations on a Layer 2 aggregate interface do not
interfere with configurations on its member ports, nor do they participate in aggregation
calculations. The configuration on a member port of the aggregate group does not take
effect until the port leaves the aggregate group.
Specify the ID of the VLAN in which the port functions are to be configured.
The configurations made in a VLAN take effect on the ports only in this VLAN.
Configure the maximum number of multicast groups on a port.
With this feature, you can limit multicast traffic on the port.
IMPORTANT:
If the number of multicast groups on a port exceeds the limit that you are setting, the system
removes all the forwarding entries related to that port from the IGMP snooping forwarding
table. The receiver hosts attached to that port can join multicast groups again before the
number of multicast groups on the port reaches the limit.
Enable or disable fast-leave processing on the port.
When a port that is enabled with the IGMP snooping fast-leave processing feature
receives an IGMP leave message, the switch immediately removes that port from the
forwarding entry for the multicast group specified in the message. When the switch
receives IGMP group-specific queries for that multicast group, it does not forward them to
that port.
You can enable IGMP snooping fast-leave processing on ports to save bandwidth and
resources.
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icon for the entry.