Enable Mld Snooping; Disable Mld Snooping On A Vlan; Configure The Switch As A Querier; Disable Multicast Flooding - Dell Force10 C150 Configuration Manual

Enable MLD Snooping

MLD is automatically enabled when you enable IPv6 PIM, but MLD Snooping must be explicitly enabled.
Task
Enable MLD Snooping

Disable MLD Snooping on a VLAN

When MLD is enabled globally, it is by default enabled on all VLANs. Disable snooping on a VLAN,
using the command
configuration there is no need to configure

Configure the Switch as a Querier

Hosts that do not support unsolicited reporting wait for a general query before sending a membership
report. When the multicast source and receivers are in the same VLAN, multicast traffic is not routed, and
so there is no querier. You must configure the switch to be the querier for a VLAN so that hosts send
membership reports, and the switch can generate a forwarding table by snooping.
Configure the switch to be the querier for a Layer 2 VLAN using the command
from INTERFACE VLAN mode. You must configure an IP address for the VLAN.
The source address of the queries is 0 to distinguish these queries from router queries. If the system
receives a query with a non-zero address any VLAN interface, it stops sending queries. When a VLAN
configured with snooping querier comes up, the VLAN interface waits for querier timeout to expire before
becoming querier.

Disable Multicast Flooding

If the switch receives a multicast packet that has an IP address of a group it has not learned (unregistered
frame), the switch floods that packet out of all ports on the VLAN.
You can configure the switch to only forward unregistered packets to ports on a VLAN that are connected
to a multicast routers using the command
When flooding is disabled, if there are no such ports in the VLAN connected to a multicast router, the
switch drops the packets.

Specify a Port as Connected to a Multicast Router

All MLD control packets and IP multicast data traffic originating from hosts are forwarded out all
interfaces connected to multicast routers. These interfaces are called multicast router interfaces, or mrouter
interfaces. You can statically specify a port in a VLAN as connected to a multicast router using the
command
612 | Multicast Listener Discovery
Command Syntax
ipv6 mld snooping enable
no ipv6 mld snooping
ipv6 mld snooping mrouter interface
from INTERFACE VLAN mode. Note that under the default
ipv6 mld snooping
for any VLAN.
no ipv6 mld snooping flood
from INTERFACE VLAN mode.
Command Mode
CONFIGURATION
ipv6 mld snooping querier
from CONFIGURATION mode.