Multicast
IPv6 Multicast Configuration
Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4 279
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MLD VLAN Settings
To configure MLD on a specific VLAN: 
STEP 1 Click Multicast > IPv6 Multicast Configuration > MLD VLAN Settings.
The following fields are displayed for each VLAN on which MLD is enabled:
• Interface Name—VLAN for which MLD information is being displayed.
• Router MLD Version—Version of MLD router.
• Query Robustness—Enter the number of expected packet losses on a link 
• Query Interval (sec)—Interval between the General Queries to be used if this device 
is the elected querier. 
• Query Max Response Interval (sec)—Delay used to calculate the Maximum 
Response Code inserted into the periodic General Queries.
• Last Member Query Interval (msec)—Enter the Maximum Response Delay to be 
used if the device cannot read Max Response Time value from group-specific queries 
sent by the elected querier.
• Multicast TTL Threshold—Enter the Time-to-Live (TTL) threshold of packets being 
forwarded on an interface. 
Multicast packets with a TTL value less than the threshold are not forwarded on the 
interface.
The default value of 0 means all Multicast packets are forwarded on the interface.
A value of 256 means that no Multicast packets are forwarded on the interface.
Configure the TTL threshold only on border routers. Conversely, routers on which you 
configure a TTL threshold value automatically become border routers.
STEP  2 To configure a VLAN, select it and click Edit. Enter the fields described above.
STEP  3 Click Apply. The Running Configuration file is updated.