H3C Technologies H3C S7500E Series Switches - Manual (Page 339)

12-19
To do… Use the command… Remarks
Configure the MLD other querier
present interval
mld timer other-querier-present
interval
Optional
By default, the other querier
present interval is determined by
the formula: Other querier present
interval (in seconds) = [ MLD query
interval ] × [ MLD querier’s
robustness variable ] + [ maximum
response delay for MLD general
query ] /2.
z Make sure that the other querier present interval is greater than the MLD query interval; otherwise
the MLD querier may frequently change.
z Make sure that the MLD query interval is greater than the maximum response delay for MLD
general queries; otherwise, multicast group members may be wrongly removed.
Configuring MLD Fast Leave Processing
MLD fast leave processing is implemented by MLD Snooping. For details, refer to MLD Snooping
Configuration in the IP Multicast Configuration Guide.
Configuring MLD SSM Mapping
Due to some possible restrictions, some receiver hosts on an SSM network may run MLDv1. To
provide SSM service support for these receiver hosts, you need to configure the MLD SSM mapping
feature on the last hop router.
Configuration Prerequisites
Before configuring the MLD SSM mapping feature, complete the following tasks:
z Configure any IPv6 unicast routing protocol so that all devices in the domain can be interoperable
at the network layer.
z Configure MLD basic functions
Enabling MLD SSM Mapping
Follow these steps to enable the MLD SSM mapping feature:
To do… Use the command… Remarks
Enter system view system-view —