Multicast
IPv4 Multicast Configuration
Cisco 500 Series Managed Switch Administration Guide 326
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STEP 6 Click Apply. The Running Configuration file is updated.
NOTE Changes in IGMP Snooping timers configuration, such as: Query Robustness,
Query Interval etc. do not take effect on timers which were already created.
IGMP Interface Settings
NOTE This page is only found on SG500X/SG500XG devices.
An interface that is defined as a Multicast router port receives all IGMP packets
(reports and queries) as well as all Multicast data.
To define IGMP on an interface:
STEP 1 Click Multicast > IPv4 Multicast Configuration > IGMP Interface Settings.
The following fields are displayed for each interface on which IGMP is enabled:
• Interface Name—Interface on which IGMP snooping is defined.
• Router IGMP Version—IGMP version.
• 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.
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