Cisco 500 Series Administration Manual page 329

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STEP 2
STEP 3
STEP 1
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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.
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.
• 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.
Cisco 500 Series Managed Switch Administration Guide
Multicast
IPv4 Multicast Configuration