Configuring IP Multicast Switching Modifying IPMSv6 Parameters
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 25-38
Specifying a Static Source IPv6 Address
By default, a source IPv6 address is not specified when MLD querying is enabled; the system
automatically determines the addresses to use for MLD queries. However, a static source IPv6 address can
be specified to overcome the need for an IPv6 interface. If configured, the static source IPv6 address is
then always used for querying, regardless of the IPv6 interface address or administrative state.
To configure a static source IPv6 address for the system, use the ipv6 multicast querying command with
the static-source-ip parameter. For example:
-> ipv6 multicast querying static-source-ip 10.2.2.1
To configure a static source IPv6 address for a specific VLAN, use the ipv6 multicast querying
command with the vlan and static-source-ip parameters. For example:
-> ipv6 multicast querying vlan 2 static-source-ip 10.2.2.1
To remove a static source IPv6 address for the system or a specific VLAN, use the no form of the ipv6
multicast querying command. For example:
-> no ipv6 multicast querying static-source-ip
-> no ipv6 multicast querying vlan 2 static-source-ip
Disabling the MLD Querying
You can disable the MLD querying by entering ipv6 multicast querying followed by the disable
keyword. For example, to disable the MLD querying you would enter:
-> ipv6 multicast querying disable
Or, as an alternative, enter the following command to restore the MLD querying to its default setting:
-> no ipv6 multicast querying
You can also disable the MLD querying on the specified VLAN by entering:
-> ipv6 multicast vlan 2 querying disable
Or, as an alternative, enter the following command to restore the MLD querying to its default setting:
-> no ipv6 multicast vlan 2 querying
Modifying the MLD Robustness Variable
The default value of the robustness variable (i.e., the variable that allows fine-tuning on the network,
where the expected packet loss is greater) is 2. The following subsections describe how to set the value of
the MLD robustness variable and restore it by using the ipv6 multicast robustness command.
Configuring the MLD Robustness Variable
You can modify the MLD robustness variable from 1 to 7 on the system if no VLAN or SPB service is
specified, by entering ipv6 multicast robustness, followed by the new value. For example, to set the
value of robustness to 3 you would enter:
-> ipv6 multicast robustness 3
Note. If the links are known to be lossy, then robustness can be set to a higher value (7).
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