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Cisco Catalyst 3750 User Manual

Cisco Catalyst 3750
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Catalyst 3750 Switch Command Reference
OL-8552-07
Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
ipv6 mld snooping
ipv6 mld snooping
Use the ipv6 mld snooping global configuration command without keywords to enable IP version 6
(IPv6) Multicast Listener Discovery (MLD) snooping globally or on the specified VLAN. Use the no
form of this command to disable MLD snooping on the switch or switch stack or the VLAN.
ipv6 mld snooping [vlan vlan-id]
no ipv6 mld snooping [vlan vlan-id]
Note This command is available only if you have configured a dual IPv4 and IPv6 Switch Database
Management (SDM) template on the switch.
Syntax Description
Defaults MLD snooping is globally disabled on the switch.
MLD snooping is enabled on all VLANs. However, MLD snooping must be globally enabled before
VLAN snooping will take place.
Command Modes Global configuration
Command History
Usage Guidelines To configure the dual IPv4 and IPv6 template, enter the sdm prefer dual-ipv4-and-ipv6 {default |
vlan} global configuration command and reload the switch.
When MLD snooping is globally disabled, it is disabled on all the existing VLAN interfaces. When you
globally 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 MLD
snooping has been disabled.
If MLD snooping is globally disabled, you cannot enable it on a VLAN. If MLD snooping is globally
enabled, you can disable it on individual VLANs.
When the IPv6 multicast router is a Catalyst 6500 switch and you are using extended VLANs (in the
range 1006 to 4094), IPv6 MLD snooping must be enabled on the extended VLAN on the Catalyst 6500
switch in order for the switch to receive queries on the VLAN. For normal-range VLANs (1 to 1005), it
is not necessary to enable IPv6 MLD snooping on the VLAN on the Catalyst 6500 switch.
VLAN numbers 1002 through 1005 are reserved for Token Ring and FDDI VLANs and cannot be used
in MLD snooping.
vlan vlan-id (Optional) Enable or disable IPv6 MLD snooping on the specified VLAN.
The VLAN ID range is 1 to 1001 and 1006 to 4094.
Release Modification
12.2(25)SED This command was introduced.

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Cisco Catalyst 3750 Specifications

General IconGeneral
Device TypeSwitch
Switching Capacity32 Gbps
Forwarding Rate38.7 Mpps
Stacking Bandwidth32 Gbps
RAM128 MB
Jumbo Frame SupportYes
Switch TypeManaged
ModelCatalyst 3750 Series
Uplink InterfacesSFP
Form FactorRack-mountable
MAC Address Table Size12, 000 entries
Routing ProtocolRIP, OSPF, EIGRP
Remote Management ProtocolSNMP, Telnet, HTTP
FeaturesLayer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)PoE
Operating Temperature-5 - 45 °C
Operating Humidity10% to 85% non-condensing

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