Setting The Maximum Number Of Multicast Groups That A Port Can Join; Enabling Ipv6 Multicast Group Replacement - HP 6125G Configuration Manual

With the MLD report suppression function enabled, within a query interval, the Layer 2 switch forwards
only the first MLD report for the IPv6 multicast group to the Layer 3 device. It does not forward subsequent
MLD reports for the same IPv6 multicast group to the Layer 3 device. This helps reduce the number of
packets being transmitted over the network.
On an MLD snooping proxy, MLD reports for an IPv6 multicast group from downstream hosts are
suppressed if the forwarding entry for the multicast group exists on the proxy, whether the suppression
function is enabled or not.
To configure MLD report suppression:
Step
1. Enter system view.
2. Enter MLD-snooping view.
3. Enable MLD report
suppression.
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:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
3. Set the maximum number of
IPv6 multicast groups that a
port can join.

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.
Command
system-view
mld-snooping
report-aggregation
Command
system-view
interface interface-type
interface-number
mld-snooping group-limit limit
[ vlan vlan-list ]
223
Remarks
N/A
N/A
Enabled by default
Remarks
N/A
Use either command.
1000 by default.