R2511-HP MSR Router Series IP Multicast Command Reference(V5)

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Use undo mld require-router-alert to restore the default.
Syntax
mld require-router-alert
undo mld require-router-alert
Default
The device does not check the Router-Alert option. That is, it forwards all received MLD messages to the
upper layer protocol for processing.
Views
Interface view
Default command level
2: System level
Examples
# Configure Ethernet 1/1 to discard MLD messages without the Router-Alert option.
<Sysname> system-view
[Sysname] interface ethernet 1/1
[Sysname-Ethernet1/1] mld require-router-alert
Related commands
• mld send-router-alert
• require-router-alert
mld robust-count
Use mld robust-count to configure the MLD querier's robustness variable on the current interface.
Use undo mld robust-count to restore the default.
Syntax
mld robust-count robust-value
undo mld robust-count
Default
The MLD querier's robustness variable is 2.
Views
Interface view
Default command level
2: System level
Parameters
robust-value: Specifies an MLD querier's robustness variable in the range of 2 to 5.
Usage guidelines
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.