Multicast
IPv4 Multicast Configuration
Cisco Sx350, SG350X, SG350XG, Sx550X & SG550XG Series Managed Switches, Firmware Release 2.2.5.x 250
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• Querier Source IP Address—Select the device source interface to be used in messages
sent. In MLD this address is selected automatically by the system.
NOTE If the Auto option is selected, the system takes the source IP address from the IP
address defined on the outgoing interface.
STEP 3 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 already created.
IGMP Interface Settings
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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