Configuring Ipv6 Multicast Listener Discovery Snooping - Cisco Catalyst 4500 series Administration Manual

Configuring IPv6 Multicast Listener Discovery
Snooping
Use Multicast Listener Discovery (MLD) snooping to enable efficient distribution of IP version 6 (IPv6)
multicast data to clients and routers in a switched network on the Catalyst 4500 series switch.
This chapter includes these sections:
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For complete syntax and usage information for the switch commands used in this chapter, see the Cisco
Note
Catalyst 4500 Series Switch Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/hw/switches/ps4324/index.html
If a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the
Cisco IOS library. See the Cisco IOS Command Reference and related publications at this location:
http://www.cisco.com/en/US/products/ps6350/index.html
About MLD Snooping
In IP version 4 (IPv4), Layer 2 switches can use Internet Group Management Protocol (IGMP) snooping
to limit the flooding of multicast traffic by dynamically configuring Layer 2 interfaces so that multicast
traffic is forwarded to only those interfaces associated with IP multicast devices. In IPv6, MLD snooping
performs a similar function. With MLD snooping, IPv6 multicast data is selectively forwarded to a list
of ports that want to receive the data, instead of being flooded to all ports in a VLAN. This list is
constructed by snooping IPv6 multicast control packets.
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About MLD Snooping, page 28-1
Configuring IPv6 MLD Snooping, page 28-5
Displaying MLD Snooping Information, page 28-10
C H A P T E R
Software Configuration Guide—elease IOS XE 3.6.0E and IOS 15.2(2)E
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