3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring Basic Functions of MLD 641
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■ Configurations performed in MLD view are globally effective, while
configurations performed in interface view are effective on the current
interface only.
■ If no configuration is performed in interface view, the global configurations
performed in MLD view will apply to that interface. Configurations performed
in interface view take precedence over those performed in MLD view.
Configuring Basic
Functions of MLD
Configuration
Prerequisites
Before configuring the basic functions of MLD, complete the following tasks:
■ Configure any IPv6 unicast routing protocol so that all devices in the domain
can be interoperable at the network layer.
■ Configure IPv6 PIM-DM or IPv6 PIM-SM.
Enabling MLD Enable MLD on the interface on which IPv6 multicast group memberships are to
be created and maintained.
Follow these steps to enable MLD:
c
CAUTION:
■ MLD must be enabled on the receiver-side DR before hosts can join IPv6
multicast groups. For details of a DR, refer to
“IPv6 PIM Configuration” on page
671.
■ After MLD is enabled on a VLAN interface, it is not allowed to enable MLD
Snooping in the corresponding VLAN, and vice versa.
Configuring the MLD
Version
Because MLD message types and formats vary with MLD versions, the same MLD
version should be configured for all routers on the same subnet before MLD can
work properly. At present, the Switch 8800s support only MLDv1.
Configure an MLD version globally
Follow these steps to configure the MLD version globally:
To do... Use the command... Remarks
Enter system view system-view -
Enable IPv6 multicast routing multicast ipv6
routing-enable
Required
Disable by default
Enter VLAN interface view interface interface-type
interface-number
-
Enable MLD mld enable Required
Disabled by default
To do... Use the command... Remarks
Enter system view system-view -
Enter MLD view mld -