H3C Technologies H3C S10500 Series Switches - Manual (Page 361)

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To do… Use the command… Remarks
Clear MLD SSM mappings
reset mld ssm-mapping group { all | interface
interface-type interface-number { all | ipv6-group-address
[ prefix-length ] [ ipv6-source-address [ prefix-length ] ] } }
Available in
user view
NOTE:
•
The reset mld group command cannot remove dynamic MLD group entries.
• The reset mld group port-info command cannot remove the Layer 2 port entries of MLD groups.
• The display mld host interface command can display information about the hosts tracked by MLD on
Layer 3 interfaces other than VLAN interfaces.
• The display mld ssm-mapping host interface command can display information about the hosts that
join the group based on MLD SSM mappings on Layer 3 interfaces other than VLAN interfaces.
CAUTION:
The reset mld group command might cause an interruption of receivers’ reception of multicast data.
MLD configuration examples
Basic MLD functions configuration example
Network requirements
• As shown in Figure 89 , receivers receive VOD information in the multicast mode. Receivers of
different organizations form stub networks N1 and N2, and Host A and Host C are multicast
receivers in N1 and N2 respectively.
• Switch A in the IPv6 PIM network connects to N1, and Switch B and Switch C connect to N2.
• Switch A connects to N1 through VLAN-interface 100, and to other devices in the IPv6 PIM network
through VLAN-interface 101.
• Switch B and Switch C connects to N2 through their own VLAN-interface 200, and to other devices
in the IPv6 PIM network through VLAN-interface 201 and VLAN-interface 202 respectively.
• MLDv1 is required between Switch A and N1. MLDv1 is also required between the other two
switches (Switch B and Switch C) and N2. Switch B acts as the MLD querier because it has a lower
IPv6 address.
• The hosts in N1 can join only IPv6 multicast group FF1E::101, and the hosts in N2 can join any IPv6
multicast groups.