Specifications

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Catalyst 4500 Se ries S wit ch C is co IO S C om mand R efer ence —Re lease I OS XE 3 .3.0 XO(1 5.1 (1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
show ipv6 mld snooping querier
show ipv6 ml d snooping q uerier
To display IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping querier-related
information most recently received by the switch or the VLAN, use the show ipv6 mld s nooping
querier command.
show ipv6 mld snooping querier [vlan vlan-id]
Syntax Description
Command Modes User EXEC mo de
Usage Guidelines Use the sh ow ipv6 m ld snoo ping q uerier command to display the MLD version and IPv6 address of a
detected device that sends MLD query messages, which is also called a querier. A subnet can have
multiple multicast switches but has only one MLD querier. The querier can be a Layer 3 switch.
The show ipv6 mld snooping querier command output also shows the VLAN and interface on which
the querier was detected. If the querier is the switch, the output shows the Port field as Router. If the
querier is a router, the output shows the port number on which the querier is learned in the Port field.
The output of the show ipv6 mld snoop querie r vlan command displays the information received in
response to a query message from an exter nal or internal querie r. It does not display user-config ured
VLAN values, such as the snooping robu stness variable on the partic ular VLAN. This querie r
information is used only on the MASQ message that is sent by the switch. It does not override the
user-configured robustness varia ble that is used for aging ou t a member that does not respond to query
messages.
VLAN numbers 1002 through 1005 are reserve d for Token Ring and FDDI VLANs and cannot be used
in MLD snooping.
Examples This is an example of output from the s how ipv6 m ld snoo ping q uerier command:
Switch> show ipv6 mld snooping querier
Vlan IP Address MLD Version Port
-------------------------------------------------------------
2 FE80::201:C9FF:FE40:6000 v1 Gi3/0/1
This is an example of output from the s how ipv6 mld sn ooping querier vlan command:
Switch> show ipv6 mld snooping querier vlan 2
IP address : FE80::201:C9FF:FE40:6000
MLD version : v1
Port : Gi3/0/1
Max response time : 1000s
Related Commands
vlan vlan-id (Optional) Specifiesa VLAN; the range is 1 to 1001 and 1006 to 4094.