Cisco 350 Series Administration Manual page 355

Multicast
IPv4 Multicast Configuration
STEP 2
STEP 3
STEP 1
Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
• 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)—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.
Select an interface, and click Edit. Enter the values of the fields described above.
Click Apply. The Running Configuration file is updated.
IGMP VLAN Settings
To configure IGMP on a specific VLAN:
Click Multicast > IPv4 Multicast Configuration > IGMP VLAN Settings.
The following fields are displayed for each VLAN on which IGMP is enabled:
• Interface Name—VLAN on which IGMP snooping is defined.
• Router IGMP Version—Version of IGMP Snooping.
• 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.
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