Chapter 5: Switching Commands 535
MLD Snooping Querier Commands
In an IPv6 environment, MLD Snooping requires that one central switch or router
periodically query all end-devices on the network to announce their multicast
memberships. This central device is the MLD Querier. The MLD query
responses, known as MLD reports, keep the switch updated with the current
multicast group membership on a port-by-port basis. If the switch does not
receive updated membership information in a timely fashion, it will stop
forwarding multicasts to the port where the end device is located.
This section describes the commands you use to configure and display
information on MLD Snooping queries on the network and, separately, on
VLANs.
This note clarifies the prioritization of MGMD Snooping Configurations. Many
of the IGMP/MLD Snooping commands are available both in the Interface and
VLAN modes. Operationally the system chooses or prefers the VLAN
configured values over the Interface configured values for most configurations
when the interface participates in the VLAN.
set mld querier Use this command to enable MLD Snooping Querier on the system (Global
Config Mode) or on a VLAN. Using this command, you can specify the IP
address that the snooping querier switch should use as a source address while
generating periodic queries.
If a VLAN has MLD Snooping Querier enabled and MLD Snooping is
operationally disabled on it, MLD Snooping Querier functionality is disabled on
that VLAN. MLD Snooping functionality is re-enabled if MLD Snooping is
operational on the VLAN.
The MLD Snooping Querier sends periodic general queries on the VLAN to
solicit membership reports.
Default disabled
Format
set mld querier
[
vlan-id
]
[
address
ipv6_address
]
Mode ◆ Global Config
◆ VLAN Mode
To Next Page
Loading...
