H3C Technologies H3C S12500 Series Switches - Manual (Page 376)

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Task Command Remarks
Display the IPv6 multicast group
information created based on the
configured MLD SSM mappings.
display mld ssm-mapping group
[ ipv6-group-address | interface interface-type
interface-number ] [ verbose ] [ | { begin |
exclude | include } regular-expression ]
Available in any view.
Display information about the
hosts that join based on the MLD
SSM mappings on an interface.
display mld ssm-mapping host interface
interface-type interface-number group
ipv6-group-address source ipv6-source-address
[ | { begin | exclude | include }
regular-expression ]
Available in any view.
Remove the dynamic group
entries of an MLD group or all
MLD groups.
reset mld group { all | interface interface-type
interface-number { all | ipv6-group-address
[ prefix-length ] [ ipv6-source-address
[ prefix-length ] ] } }
Available in user
view.
This command cannot
remove dynamic MLD
group entries.
Remove the dynamic Layer 2 port
entries of an MLD group or all
MLD groups.
reset mld group port-info { all |
ipv6-group-address } [ vlan vlan-id ]
Available in user
view.
This command cannot
remove the Layer 2
port entries of MLD
groups.
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.
MLD configuration examples
IMPORTANT:
By default, Ethernet interfaces, VLAN interfaces, and aggregate interfaces are in the state of DOWN. To
configure such an interface, use the undo shutdown commands to bring it up first.
Basic MLD functions configuration example
Network requirements
As shown in Figure 97 , receivers receive VOD information in the multicast mode. Receivers of different
organizations form stub networks N1 and N2, and Host A in N1 and Host C in N2 are multicast
receivers.
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.
MLDv1 runs between Switch A and N1. MLDv1 runs 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.