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-interval
ipv6 mld snooping last-listener-query-interval
To configure IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping last-listener query
interval on the switch or on a VLAN, use the ipv6 mld snooping last-listener-query-interval
command. To reset the query time to the default settings, use the no form of this command.
ipv6 mld snooping [vlan vlan-id] last-listener-query-interval integer_value
no ipv6 mld snooping [vlan vlan-id] last-listener-query-interval
Syntax Description
Command Default The default global query interval (maximum response time) is 1000 (1 second).
The default VLAN query interval (maximum response time) is 0 (the global count is used).
Command Modes Global configuration mode
Command History
Usage Guidelines The last-listener-query-interval time is the maximum time that a multicast switch waits after issuing a
Mulitcast Address Specific Query (MASQ) before deleting a port from the multicast group.
In MLD snooping, when the IPv6 multicast switch receives an MLD leave message, it sends out queries
to hosts belonging to the multicast group. If there are no responses from a port to a MASQ for a length
of time, the switch deletes the port from the membership database of the multicast address. The last
listener query interval is the maximum time that the switch waits before deleting a nonresponsive port
from the multicast group.
When a VLAN query interval is set, the global query interval is overridden. When the VLAN interval is
set at 0, the global value 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 interval on the specified VLAN.
The VLAN ID range is 1 to 1001 and 1006 to 4094.
integer_value Sets the time period (in thousandths of a second) that a multicast switch must
wait after issuing a MASQ before deleting a port from the multicast group.
The range is 100 to 32,768. The default is 1000 (1 second),
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