H3C S5500-EI - Setting the Maximum Number of Multicast Groups that a Port Can Join; Enabling Ipv6 Multicast Group Replacement

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Ste
p
Command Remarks
2. Enter MLD-snooping view.
mld-snooping N/A
3. Enable MLD report
suppression.
report-aggregation Enabled by default
Setting the maximum number of multicast groups that a port can
join
You can set the maximum number of IPv6 multicast groups that a port can join to regulate the traffic on
the port.
When you configure this maximum number, if the number of IPv6 multicast groups the port has joined
exceeds the configured maximum value, the system deletes all the forwarding entries for the port from the
MLD snooping forwarding table, and the hosts on this port join IPv6 multicast groups again until the
number of IPv6 multicast groups that the port joins reaches the maximum value. When the port joins an
IPv6 multicast group, if the port has been configured as a static member port, the system applies the
configurations to the port again. If you have configured simulated joining on the port, the system
establishes corresponding forwarding entry for the port after receiving a report from the simulated
member host.
To configure the maximum number of IPv6 multicast groups that a port can join:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter Layer 2 Ethernet
interface view, Layer 2
aggregate interface view,
port group view.
• Enter Layer 2 Ethernet interface
view or Layer 2 aggregate
interface view:
interface interface-type
interface-number
• Enter port group view:
port-group manual
port-group-name
Use either command.
3. Set the maximum number of
IPv6 multicast groups that a
port can join.
mld-snooping group-limit limit
[ vlan vlan-list ]
1000 by default.
Enabling IPv6 multicast group replacement
For various reasons, the number of IPv6 multicast groups that a switch or a port can join might exceed the
upper limit. In addition, in some specific applications, an IPv6 multicast group that the switch newly joins
must replace an existing IPv6 multicast group automatically. A typical example is channel switching. To
view a new TV channel, a user switches from the current IPv6 multicast group to the new one.