Cisco 500 Series - Page 329

Multicast
IPv4 Multicast Configuration
327 Cisco 500 Series Managed Switch Administration Guide
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Configure the TTL threshold only on border routers. Conversely, routers on
which you configure a TTL threshold value automatically become border
routers.
STEP 2 Select an interface, and click Edit. Enter the values of the fields described above.
STEP 3 Click Apply. The Running Configuration file is updated.
IGMP VLAN Settings
To configure IGMP on a specific VLAN:
STEP 1 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.
• 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—This page is only found on SG500X/SG500XG
devices. 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.