R2511-HP MSR Router Series IP Multicast Command Reference(V5)

383
Usage guidelines
This command also takes effect on VLANs with MLD enabled on their VLAN interfaces.
Examples
# Enable fast-leave processing globally for VLAN 2.
<Sysname> system-view
[Sysname] mld-snooping
[Sysname-mld-snooping] fast-leave vlan 2
Related commands
mld-snooping fast-leave
group-policy (MLD-snooping view)
Use group-policy to configure a global IPv6 multicast group filter to control the IPv6 multicast groups that
the hosts in a VLAN can join.
Use undo group-policy to remove the configured global IPv6 multicast group filter.
Syntax
group-policy acl6-number [ vlan vlan-list ]
undo group-policy [ vlan vlan-list ]
Default
No IPv6 multicast group filter is configured globally, and a host in any VLAN can join a valid IPv6
multicast group.
Views
MLD-snooping view
Default command level
2: System level
Parameters
acl6-number: Specifies a basic or advanced IPv6 ACL number. The value range is 2000 to 3999. A host
can join only the IPv6 multicast groups that match the permit statement in the specified ACL. The source
address or address range specified in the advanced IPv6 ACL rule matches the IPv6 multicast source
address or addresses specified in MLDv2 reports, rather than the source address in the IPv6 packets. The
system assumes that an MLDv1 report or an MLDv2 IS_EX or TO_EX report that does not carry an IPv6
multicast source address carries an IPv6 multicast source address of 0::0.
vlan vlan-list: Specifies one or multiple VLANs. You can provide up to 10 VLAN lists. For each list, you
can specify an individual VLAN in the form of vlan-id, or a VLAN range in the form of start-vlan-id to
end-vlan-id, where the end VLAN ID must be greater than the start VLAN ID. The value range of a VLAN
ID is 1 to 4094. If you do not specify any VLAN, the command applies to all VLANs. If you specify one
or multiple VLANs, the command applies to the specified VLANs only.
Usage guidelines
This command also takes effect on VLANs with MLD enabled on their VLAN interfaces.
If the specified IPv6 ACL does not exist or the ACL rule is null, all IPv6 multicast groups are filtered out.
You can configure different IPv6 ACL rules for each port in different VLANs. For a given VLAN, a newly
configured IPv6 ACL rule overrides the existing one.