Enabling Ipv6 Multicast Group Replacement - HP A8800 Configuration Manual

been configured as a simulated member host, the system establishes corresponding forwarding entry for
the host after receiving a report from the host.
To set 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 or
enter port group 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 router or a port can join might exceed the
upper limit. In addition, in some specific applications, an IPv6 multicast group that the router 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.
To realize such requirements, you can enable the IPv6 multicast group replacement function on the router
or on a certain port. When the number of IPv6 multicast groups that the router or the port has joined
reaches the limit, one of the following occurs:
If the IPv6 multicast group replacement feature is disabled, new MLD reports are automatically
•
discarded.
• If the IPv6 multicast group replacement feature is enabled, the IPv6 multicast group that the router
or the port newly joins automatically replaces an existing IPv6 multicast group that has the lowest
IPv6 address.
IMPORTANT:
Be sure to configure the maximum number of IPv6 multicast groups that a port can join to a value other
than the default one (see
enabling IPv6 multicast group replacement. Otherwise, the IPv6 multicast group replacement function
does not take effect.
Enabling IPv6 multicast group replacement globally
Step
1. Enter system view.
2. Enter MLD snooping view.
3. Enable IPv6 multicast group
replacement.
Command
system-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
mld-snooping group-limit limit [ vlan
vlan-list ]
"Setting the maximum number of multicast groups that a port can
Command
system-view
mld-snooping
overflow-replace [ vlan vlan-list ]
304
Remarks
N/A
Use either command.
1024 by default.
join") before
Remarks
N/A
N/A
Disabled by default.