Restoring The Igmp Robustness Variable; Enabling And Disabling The Igmp Spoofing; Enabling The Igmp Spoofing - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Configuring IP Multicast Switching
Note. If the links are known to be lossy, then robustness variable can be set to a higher value (7).
You can also modify the IGMP robustness variable from 1 to 7 on the specified VLAN by entering:
-> ip multicast vlan 2 robustness 3

Restoring the IGMP Robustness Variable

You can restore the IGMP robustness variable to its default (i.e., 2) value on the system if no vlan is
specified, by entering
-> ip multicast robustness 0
Or, as an alternative, enter:
-> ip multicast robustness
To restore the IGMP robustness to its default value.
You can also restore the IGMP robustness variable to its default (i.e., 2) value on the specified VLAN, by
entering ip multicast robustness followed by the value 0 as shown below:
-> ip multicast vlan 2 robustness 0
Or, as an alternative, enter:
-> ip multicast vlan 2 robustness
To restore the IGMP robustness to its default value.

Enabling and Disabling the IGMP Spoofing

By default, IGMP spoofing (i.e., replacing a client's MAC and IP address with the system's MAC and IP
address, when proxying aggregated IGMP group membership information) is disabled on the switch. The
following subsections describe how to enable and disable spoofing by using the
command.

Enabling the IGMP Spoofing

To enable IGMP spoofing on the system if no VLAN is specified, use the
as shown below:
-> ip multicast spoofing enable
You can also enable IGMP spoofing on the specified VLAN by entering:
-> ip multicast vlan 2 spoofing enable
Disabling the IGMP Spoofing
To disable IGMP spoofing on the system if no VLAN is specified, use the
command as shown below:
-> ip multicast spoofing disable
Or, as an alternative, enter:
OmniSwitch AOS Release 6 Network Configuration Guide
ip multicast robustness followed by the value 0 as shown below:
September 2009
Modifying IPMS Parameters
ip multicast spoofing
ip multicast spoofing command
ip multicast spoofing
page 42-19