UMN:CLI
User Manual
V8102
550
11.1.6.4
MLD Last Member Query Count and Interval
When a host is not interested in receiving the multicast traffic for a particular group any
more, it can explicitly leave the group by sending leave group messages.
Upon receiving a done message, a querier then sends out a Multicast-address-specific
(MLDv1) or Multicast-address-source-specific query (MLDv2) message to determine if
there is still any host interested in receiving the traffic. If there is no reply, the querier
stops forwarding the multicast traffic. However, MLD messages may get lost for various
reasons, so you can specify the number of sending query messages and its interval.
To specify the number of sending Multicast-address-specific or Multicast-address-source-
specific query messages, use the following command.
Command
Mode
Description
ipv6 mld last-member-query-
count
<2-7>
Interface
[VLAN]
Specifies a last member query count.
2-7: last member query count value (default: 2)
no ipv6 mld last-member-query-
count
Deletes a specified last member query count.
To specify the interval to send group-specific or group-source-specific query messages,
use the following command.
Command
Mode
Description
ipv6 mld last-member-query-
interval
<1000-25500>
Interface
[VLAN]
Specifies a last member query interval.
1000-25500: last member query interval
(default: 1000 milliseconds)
no ipv6 mld last-member-query-
interval
Deletes a specified last member query interval.
11.1.6.5
MLD Immediate Leave
Normally, a querier sends a Multicast-address-specific or Multicast-address-source-
specific query message upon receipt of a done message from a host. If you want to set a
leave latency as 0 (zero), you can omit the querying procedure. When the querying pro-
cedure is omitted, the router immediately removes the interface from the MLD cache for
that group, and informs the multicast routing protocols.
To enable the MLD immediate leave feature on a current interface, use the following
command.
Command
Mode
Description
ipv6
mld
immediate-leave
group-list
WORD
Interface
[VLAN]
Enables the MLD immediate leave.
1-99: IP standard access list
1300-1999: IP standard access list (extended range)
WORD: IPv6 access list name
no ipv6 mld immediate-leave
Disables the IGMP immediate leave.