Disabling mld listener message suppression, Displaying mld snooping information – Dell POWEREDGE M1000E User Manual

Page 623

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25-11

Cisco Catalyst Blade Switch 3130 and 3032 for Dell Software Configuration Guide

OL-13270-03

Chapter 25 Configuring IPv6 MLD Snooping

Displaying MLD Snooping Information

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:

To re-enable MLD message suppression, use the ipv6 mld snooping listener-message-suppression
global configuration command.

Displaying MLD Snooping Information

You can display MLD snooping information for dynamically learned and statically configured router
ports and VLAN interfaces. You can also display MAC address multicast entries for a VLAN configured
for MLD snooping.

To display MLD snooping information, use one or more of the privileged EXEC commands in

Table 25-2

.

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.

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