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6 MLD Snooping
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6.1 Basic
Configuration
A network node that acts as a source of IPv6 multicast traffic is only an indirect
participant in MLD snooping. It provides multicast traffic and MLD doesn’t interact
with it. Please note that in an application, like desktop conferencing, a network node
may act as both a source and an MLD host. However, MLD interacts with that node
only in its role as an MLD host.
A source node creates multicast traffic by sending packets to a multicast address. In
IPv6, addresses with the first eight bits set (e.g. “FF” as the first two characters of
the address) are multicast addresses, and any node that listens to such an address
will receive the traffic sent to that address. Application software running on the
source and destination systems cooperates to determine what multicast address to
use. This is a function of the application software, not of MLD.
When MLD snooping is enabled on a VLAN, the switch acts to minimize unnecessary
multicast traffic. If the switch receives multicast traffic destined for a given multicast
address, it forwards that traffic to ports on the VLAN that have MLD hosts for that
address. It drops traffic for ports on the VLAN that have no MLD hosts.
The section helps you configure the MLD Snooping basic configuration and the
parameters.
Web Interface
To configure the MLD Snooping Configuration in the web interface:
1.
Click Configuration, MLD Snooping, Basic Configuration.
2.
Evoke to enable or disable the Global configuration parameters. Evoke the
port to join Router Port and Fast Leave.
3.
Scroll to select the Throttling mode with unlimited or 1 to 10.
4.
Click “Save” to save the setting.
5.
If you want to cancel the setting, click the reset button to revert back to
previously saved values.