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Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter Software Configuration Guide
OL-12189-01
Chapter 24 Configuring IPv6 MLD Snooping
Configuring IPv6 MLD Snooping
This example shows how to set the MLD snooping global robustness variable to 3:
Switch# configure terminal
Switch(config)# ipv6 mld snooping robustness-variable 3
Switch(config)# exit
This example shows how to set the MLD snooping last-listener query count for a VLAN to 3:
Switch# configure terminal
Switch(config)# ipv6 mld snooping vlan 200 last-listener-query-count 3
Switch(config)# exit
This example shows how to set the MLD snooping last-listener query interval (maximum response time)
to 2000 (2 seconds):
Switch# configure terminal
Switch(config)# ipv6 mld snooping last-listener-query-interval 2000
Switch(config)# exit
Disabling MLD Listener Message Suppression
MLD snooping listener message suppression is enabled by default. When it is enabled, the switch
forwards only one MLD report per multicast router query. When message suppression is disabled,
multiple MLD reports could be forwarded to the multicast routers.
Beginning in privileged EXEC mode, follow these steps to disable MLD listener message suppression:
Step 8
ipv6 mld snooping tcn query solicit (Optional) Enable topology change notification (TCN) solicitation,
which means that VLANs flood all IPv6 multicast traffic for the
configured number of queries before sending multicast data to only
those ports requesting to receive it. The default is for TCN to be
disabled.
Step 9
ipv6 mld snooping tcn flood query count
count
(Optional) When TCN is enabled, specify the number of TCN queries
to be sent. The range is from 1 to 10; the default is 2.
Step 10
end Return to privileged EXEC mode.
Step 11
show ipv6 mld snooping querier [vlan
vlan-id]
(Optional) Verify that the MLD snooping querier information for the
switch or for the VLAN.
Step 12
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
no ipv6 mld snooping
listener-message-suppression
Disable MLD message suppression.
Step 3
end Return to privileged EXEC mode.
Step 4
show ipv6 mld snooping Verify that IPv6 MLD snooping report suppression is
disabled.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.