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MLD Snooping
Cisco Small Business 200 Series Smart Switch Administration Guide 216
15
• Last Member Query Counter—Enter the number of IGMP Group-Specific
Queries sent before the device assumes there are no more members for the
group, if the device is the elected querier.
• Operational Last Member Query Counter—Displays the operational value
of the Last Member Query Counter.
• Last Member Query Interval—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.
• Operational Last Member Query Interval—Displays the Last Member
Query Interval sent by the elected querier.
• Immediate Leave—Enable Immediate Leave to decrease the time it takes to
block a Multicast stream sent to a member port when an IGMP Group Leave
message is received on that port.
STEP 5 Click Apply. The Running Configuration file is updated.
MLD Snooping
Hosts use the MLD protocol to report their participation in Multicast sessions, and
the device uses MLD snooping to build Multicast membership lists. It uses these
lists to forward Multicast packets only to device ports where there are host nodes
that are members of the Multicast groups. The device does not support MLD
Querier.
Hosts use the MLD protocol to report their participation in Multicast sessions.
The device supports two versions of MLD snooping:
• MLDv1 snooping detects MLDv1 control packets, and sets up traffic
bridging, based on IPv6 destination Multicast addresses.
• MLDv2 snooping uses MLDv2 control packets to forward traffic based on
the source IPv6 address, and the destination IPv6 Multicast address.
The actual MLD version is selected by the Multicast router in the network.