Setting The Maximum Number Of Ipv6 Multicast Groups On A Port; Enabling The Ipv6 Multicast Group Replacement Function - HP MSR2003 Configuration Manual

Setting the maximum number of IPv6 multicast groups on a port

You can set the maximum number of IPv6 multicast groups on a port to regulate the port traffic.
When you set the maximum number of IPv6 multicast groups on a port, follow these guidelines:
• This configuration takes effect on the IPv6 multicast groups that the port dynamically joins. If you
configure the port as a static member port for an IPv6 multicast group, this configuration does not
take effect on the multicast group.
If the number of IPv6 multicast groups on a port exceeds the limit, the system removes all the
•
forwarding entries related to that port from the MLD snooping forwarding table. In this case, the
receiver hosts attached to that port can join IPv6 multicast groups again before the number of IPv6
multicast groups on the port reaches the limit.
To set the maximum number of IPv6 multicast groups on a port:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet interface
view.
3. Set the maximum number of
IPv6 multicast groups on a
port.

Enabling the IPv6 multicast group replacement function

When the number of IPv6 multicast groups on a Layer 2 device or a port exceeds the limit:
If the IPv6 multicast group replacement is enabled, the Layer 2 device or the port replaces an
•
existing IPv6 multicast group with a newly joined IPv6 multicast group.
• If the IPv6 multicast group replacement is disabled, the Layer 2 device or the port discards MLD
reports for joining a new IPv6 multicast group.
In some specific applications, such as channel switching, a newly joined IPv6 multicast group must
automatically replace an existing IPv6 multicast group. In this case, the function of IPv6 multicast group
replacement must also be enabled so a user can switch from the current IPv6 multicast group to a new
one.
When you enable the IPv6 multicast group replacement function, follow these guidelines:
This configuration takes effect on the multicast groups that the port dynamically joins. If you
•
configure the port as a static member port for a multicast group, this configuration does not take
effect on the multicast group.
• You can enable the multicast group replacement function either for the current port in interface view
or globally for all ports in MLD-snooping view. If the configurations are made in both interface view
and MLD-snooping view, the configuration made in interface view takes priority.
To enable the IPv6 multicast group replacement function globally:
Step
1. Enter system view.
2. Enter MLD-snooping view.
Command
system-view
interface interface-type
interface-number
mld-snooping group-limit limit
[ vlan vlan-list ]
Command
system-view
mld-snooping
234
Remarks
N/A
N/A
The default setting is
4294967295.
Remarks
N/A
N/A