Setup Guide

show ipv6 mld groups
Dell#show ipv6 mld groups
Total Number of Groups: 1
MLD Connected Group Membership
Group Address Interface Mode Uptime Expires Last Reporter
Ff08::12 Vlan 10 MLDv2 00:00:12 00:02:05 1::2
Displaying MLD Interfaces
Display MLD interfaces.
To display MLD interfaces, use the following command:
INTERFACE
show ipv6 mld interface vlan 20
Dell#show ipv6 mld interface vlan 20
Vlan 20 is up, line protocol is up
Inbound MLD access group is not set
Internet address is fe80::92b1:1cff:fef4:9b63/64
MLD is enabled on interface
MLD query interval is 60 seconds
MLD querier timeout is 125 seconds
MLD max query response time is 10 seconds
MLD last member query response interval is 1000 ms
MLD immediate-leave is enabled for all groups
MLD activity: 0 joins
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
configure MLD snooping in subnets that receive MLD queries from either MLD or the MLD snooping querier. MLD snooping
limits the IPv6 multicast traffic at Layer 2 by configuring Layer 2 LAN ports and dynamically forwards the IPv6 multicast traffic
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 traffic 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.
1028 Multicast Listener Discovery Protocol