Enabling Multicast Group Replacement; Enabling Host Tracking - HP FlexFabric 5950 series Configuration Manual

Enabling multicast group replacement

This feature enables the device to replace an existing group with a newly joined group when the
number of groups exceeds the upper limit. This feature is typically used in the channel switching
application. Without this feature, the device discards IGMP reports for new groups, and the user
cannot change to the new channel.
Configuration restrictions and guidelines
When you enable multicast group replacement, follow these restrictions and 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.
Enabling multicast group replacement globally
Step
1. Enter system view.
2. Enter IGMP-snooping view.
3. Enable multicast group
replacement globally.
Enabling multicast group replacement on a port
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
3. Enable multicast group
replacement on a port.

Enabling host tracking

This feature enables the device to record information about member hosts that are receiving
multicast data. The information includes IP addresses of the hosts, length of time elapsed since the
hosts joined multicast groups, and remaining timeout time for the hosts. This feature facilitates
monitoring and managing member hosts.
Enabling host tracking globally
Step
1. Enter system view.
2. Enter IGMP-snooping view.
3. Enable host tracking
globally.
Enabling host tracking in a VLAN
Step
1. Enter system view.
Command
system-view
igmp-snooping
overflow-replace [ vlan vlan-list ]
Command
system-view
interface interface-type interface-
number
igmp-snooping
overflow-replace [ vlan vlan-list ]
Command
system-view
igmp-snooping
host-tracking
Command
system-view
33
Remarks
N/A
N/A
By default, multicast group
replacement is disabled globally.
Remarks
N/A
N/A
By default, multicast group
replacement is disabled on a port.
Remarks
N/A
N/A
By default, host tracking is
disabled.
Remarks
N/A