Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
ipv6 mld snooping last-listener-query-count
ipv6 mld snooping last-listener-query-count
To configure IP version 6 (IPv6) Multicast Listener Discovery Mulitcast Address Specific Queries
(MASQs) that will be sent before aging out a client, use the ipv6 mld snooping
last-listener-query-count command. To reset the query count to the default settings, use the no form of
this command.
ipv6 mld snooping [vlan vlan-id] last-listener-query-count integer_value
no ipv6 mld snooping [vlan vlan-id] last-listener-query-count
Syntax Description
Command Default The default global count is 2.
The default VLAN count is 0 (the global count is used).
Command Modes Global configuration mode
Command History
Usage Guidelines In MLD snooping, the IPv6 multicast switch periodically sends out queries to hosts belonging to the
multicast group. If a host wants to leave a multicast group, it can silently leave or it can respond to the
query with a Multicast Listener Done message (equivalent to an IGMP Leave message). When
Immediate Leave is not configured (it should not be configured if multiple clients for a group exist on
the same port), the configured last-listener query count determines the number of MASQs that are sent
before an MLD client is aged out.
When the last-listener query count is set for a VLAN, this count overrides the value configured globally.
When the VLAN count is not configured (set to the default of 0), the global count is used.
VLAN numbers 1002 through 1005 are reserved for Token Ring and FDDI VLANs and cannot be used
in MLD snooping.
vlan vlan-id (Optional) Configures last-listener query count on the specified VLAN. The
VLAN ID range is 1 to 1001 and 1006 to 4094.
integer_value The integer range is 1 to 7.
Release Modification
12.2(40)SG This command was introduced on the Catalyst 4500.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E