Administrator Guide

Multicast Listener Discovery Protocol
The Multicast Listener Discovery (MLD) protocol is used by IPv6 routers to discover multicast listeners on a directly attached link.
Similar to the Internet Group Management Protocol (IGMP), which handles multicast group memberships in IPv4 networks, MLD is used
for multicast management on IPv6 networks.
Topics:
• clear ipv6 mld groups
• debug ipv6 mld
• ipv6 mld explicit-tracking
• ipv6 mld last-member-query-interval
• ipv6 mld query-interval
• ipv6 mld query-max-resp-time
• ipv6 mld version
• show ipv6 mld groups
• show ipv6 mld interface
• MLD Snooping
clear ipv6 mld groups
Clear entries from the group cache table.
Syntax
clear ipv6 mld [vrf vrf-name] groups [interface | group-address]
Parameters
vrf vrf-name (Optional) Enter the keyword vrf followed by the name of the VRF.
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 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
specifies successive hexadecimal fields of zero.
Defaults None.
Command Modes EXEC Privilege
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.11(3.0) Introduced on the S3048–ON, S4048–ON, S4048T-ON, S6000–ON, S6010–ON,
S6100–ON, Z9100–ON, S3100, and C9010.
debug ipv6 mld
Enable debugging on IPv6 MLD packets.
Syntax
debug ipv6 mld [vrf vrf-name] {group-address | interface}
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