Users Guide

MLD querying router is 35::1 (this system)
MLD version is 2
MLD Snooping
MLD snooping allows the switch to examine the MLD packets and forwards the decision based on their content. You can congure MLD
snooping in subnets that receive MLD queries from either MLD or the MLD snooping querier. MLD snooping limits the IPv6 multicast trac
at Layer 2 by conguring Layer 2 LAN ports and dynamically forwards the IPv6 multicast trac to the ports that want to receive it. Hosts
join IPv6 multicast groups either by sending an unsolicited MLD report or by sending an MLD report in response to a general query from an
IPv6 multicast router (the switch forwards general queries from IPv6 multicast routers to all the ports in a VLAN). The switch snoops these
reports and in response to a snooped MLD report, the switch creates an entry in its forwarding table for the VLAN on which the report was
received. When the other hosts that are interested in this multicast trac send MLD reports, the switch snoops their report and adds them
to the existing forwarding table entry. The switch creates only one entry per VLAN in the forwarding table for each multicast group, for
which it snoops an MLD report.
clear ipv6 mld snooping groups
Clear entries from the group cache table.
Syntax
clear ipv6 mld snooping groups [interface | group-address]
Parameters
interface Enter the following keywords and slot/port or number information:
• For a 1-Gigabit Ethernet interface, enter the keyword GigabitEthernet followed
by the slot/port information.
• For a Port Channel interface, enter the keywords port-channel then a number.
•
For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then
the slot/port[/subport] information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/
port information.
• For a VLAN, enter the keyword vlan followed by a number from 1 to 4094.
group-address (OPTIONAL) Enter the group address in the following format: x:x:x:x::x. The :: notation
species successive hexadecimal elds of zero.
Defaults None.
Command Modes EXEC Privilege
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.14(0.0) Introduced on the S3048–ON, S4048–ON, S4048T-ON, S5048F-ON, S6000–ON,
S6010–ON, S6100–ON, Z9100–ON, S3100, and C9010.
debug ipv6 mld snooping
Enable debugging on IPv6 MLD snooping packets.
Syntax
debug ipv6 mld {group-address | interface}
1180 Multicast Listener Discovery Protocol