298
View
MLD view
Default level
2: System level
Parameters
robust-value
: Specifies an MLD querier’s robustness variable, in the range of 2 to 5.
Description
Use
robust-count
to configure the MLD querier’s robustness variable globally.
Use
undo robust-count
to restore the default.
By default, the MLD querier’s robustness variable is 2.
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 because of 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 that the MLDv1/v2 querier sends on startup.
•
The number of multicast-address-specific queries that the MLDv1 querier sends after receiving an
MLD done message.
•
The number of multicast-address-and-source-specific queries that 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
,
last-listener-query-interval
,
mld robust-count
,
startup-query-count
,
timer other-querier-present
, and
timer query
.
Examples
# Set the MLD querier’s robustness variable to 3 globally.
<Sysname> system-view
[Sysname] mld
[Sysname-mld] robust-count 3
send-router-alert (MLD view)
Syntax
send-router-alert
undo send-router-alert
View
MLD view
Default level
2: System level
Parameters
None
