Cisco Cisco SG200-26P 26-port Gigabit PoE Smart Switch メンテナンスマニュアル

Configuring MLD Snooping

Cisco Small Business SF200E Series Advanced Smart Switch

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Ensure that an IGMP Mrouter interface has been configured for this VLAN (or all 
VLANs). See 

.

MLD is a protocol used by IPv6 multicast routers to discover the presence of 
multicast listeners (nodes wishing to receive IPv6 multicast packets) on its 
directly-attached links and to discover which multicast packets are of interest to 
neighboring nodes. MLD is derived from IGMP, which performs a similar function 
for IPv4 multicast traffic (see 

When MLD snooping is enabled, the switch selectively forwards IPv6 multicast 
packets to a list of ports that want to receive the data instead of flooding the 
packets to all ports in the VLAN. This list is constructed by snooping IPv6 multicast 
control packets.

The switch supports MLD snooping of MLD version 1 and version 2 packets. The 
switch can be configured to perform MLD snooping and IGMP snooping 
simultaneously.

MLD snooping can be enabled or disabled separately on each VLAN. Although 
MLD is based on IPv6 addresses, the switch performs the actual multicast 
forwarding based on the equivalent MAC addresses. 

To enable and configure MLD snooping:

Click Multicast > MLD Snooping in the navigation window.

The MLD Snooping Table lists each VLAN on which this feature is enabled.

Select Enable for the MLD Snooping Status.

Click Add in the MLD Snooping Table.