Alcatel-Lucent 6850-48 网络指南

Configuring IP Multicast Switching

Modifying IPMS Parameters

OmniSwitch AOS Release 6 Network Configuration Guide

page 42-19

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

You can restore the IGMP robustness variable to its default (i.e., 2) value on the system if no vlan is 
specified, by entering 

 followed by the value 0 as shown below:

-> 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.

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.

To enable IGMP spoofing on the system if no VLAN is specified, use the 

 command 

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

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: