Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET
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Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

Catalyst 3750-E and 3560-E Switch Cisco IOS ... - DNIP . NET

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Chapter 2<strong>Catalyst</strong> <strong>3750</strong>-E <strong>and</strong> <strong>3560</strong>-E <strong>Switch</strong> <strong>Cisco</strong> <strong>IOS</strong> Comm<strong>and</strong>sipv6 mld snoopingipv6 mld snoopingUse the ipv6 mld snooping global configuration comm<strong>and</strong> on the switch stack or on a st<strong>and</strong>alone switchwithout keywords to enable IP version 6 (IPv6) Multicast Listener Discovery (MLD) snooping globallyor on the specified VLAN. Use the no form of this comm<strong>and</strong> to disable MLD snooping on the switch orswitch stack or the VLAN.ipv6 mld snooping [vlan vlan-id]no ipv6 mld snooping [vlan vlan-id]NoteThis comm<strong>and</strong> is available only if you have configured a dual IPv4 <strong>and</strong> IPv6 <strong>Switch</strong> DatabaseManagement (SDM) template on the switch.Syntax Descriptionvlan vlan-id(Optional) Enable or disable IPv6 MLD snooping on the specified VLAN.The VLAN ID range is 1 to 1001 <strong>and</strong> 1006 to 4094.DefaultsMLD snooping is globally disabled on the switch.MLD snooping is enabled on all VLANs. However, MLD snooping must be globally enabled beforeVLAN snooping will take place.Comm<strong>and</strong> ModesGlobal configurationComm<strong>and</strong> HistoryRelease12.2(35)SE2ModificationThis comm<strong>and</strong> was introduced.Usage GuidelinesTo configure the dual IPv4 <strong>and</strong> IPv6 template, enter the sdm prefer dual-ipv4-<strong>and</strong>-ipv6 {default | vlan)global configuration comm<strong>and</strong> <strong>and</strong> reload the switch.When MLD snooping is globally disabled, it is disabled on all the existing VLAN interfaces. When youglobally enable MLD snooping, it is enabled on all VLAN interfaces that are in the default state(enabled). VLAN configuration will override global configuration on interfaces on which MLDsnooping has been disabled.If MLD snooping is globally disabled, you cannot enable it on a VLAN. If MLD snooping is globallyenabled, you can disable it on individual VLANs.When the IPv6 multicast router is a <strong>Catalyst</strong> 6500 switch <strong>and</strong> you are using extended VLANs (in therange 1006 to 4094), IPv6 MLD snooping must be enabled on the extended VLAN on the <strong>Catalyst</strong> 6500switch in order for the <strong>Catalyst</strong> <strong>3750</strong>-E or <strong>Catalyst</strong> <strong>3560</strong>-E switch to receive queries on the VLAN. Fornormal-range VLANs (1 to 1005), it is not necessary to enable IPv6 MLD snooping on the VLAN on the<strong>Catalyst</strong> 6500 switch.VLAN numbers 1002 through 1005 are reserved for Token Ring <strong>and</strong> FDDI VLANs <strong>and</strong> cannot be usedin MLD snooping.OL-9776-08<strong>Catalyst</strong> <strong>3750</strong>-E <strong>and</strong> <strong>3560</strong>-E <strong>Switch</strong> Comm<strong>and</strong> Reference2-293

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