R3721-F3210-F3171-HP High-End Firewalls Network Management Command Reference-6PW101

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The MLD querier's robustness variable defines the maximum number of attempts for transmitting MLD
general queries, multicast-address-specific queries, or multicast-address-and-source-specific queries in
case of packet loss due to network problems. A greater value of the robustness variable makes the MLD
querier "more robust", but results in a longer IPv6 multicast group timeout time.
The MLD querier's robustness variable determines the following values:
• The default number of MLD general queries the MLDv1/v2 querier sends on startup.
• The number of multicast-address-specific queries the MLDv1 querier sends after receiving an MLD
done message.
• The number of multicast-address-and-source-specific queries the MLDv2 querier sends after
receiving an MLD report that tells relation changes between IPv6 multicast groups and IPv6
multicast sources.
Related commands: display mld interface, mld last-listener-query-interval, mld startup-query-count,
mld timer other-querier-present, mld timer query, and robust-count.
Examples
# Set the MLD querier's robustness variable to 3 on GigabitEthernet 0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 0/1
[Sysname-GigabitEthernet0/1] mld robust-count 3
mld send-router-alert
Syntax
mld send-router-alert
undo mld send-router-alert
View
Interface view
Default level
2: System level
Parameters
None
Description
Use mld send-router-alert to enable insertion of the Router-Alert option into MLD messages to be sent
from the current interface.
Use undo mld send-router-alert to disable insertion of the Router-Alert option into MLD messages to be
sent from the current interface.
By default, MLD messages carry the Router-Alert option.
Related commands: mld require-router-alert and send-router-alert.
Examples
# Disable insertion of the Router-Alert option into MLD messages to be sent from GigabitEthernet 0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 0/1
[Sysname-GigabitEthernet0/1] undo mld send-router-alert