Ipv6 Multicast Listen Discovery (Mld) And Multicast Listen Discovery Snooping - Cisco Catalyst 4500 Series Configuration Manual

Chapter 1 Product Overview

IPv6 Multicast Listen Discovery (MLD) and Multicast Listen Discovery snooping

Jumbo Frames
The jumbo frames feature allows the switch to forward packets as large as 9216 bytes (larger than the
IEEE Ethernet MTU), rather than declare those frames "oversize" and discard them. This feature is
typically used for large data transfers. The jumbo frames feature can be configured on a per-port basis
on Layer 2 and Layer 3 interfaces. The feature is supported only on the following hardware:
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For information on Jumbo Frames, see
Link Aggregation Control Protocol
LACP supports the automatic creation of EtherChannels by exchanging LACP packets between LAN
ports. LACP packets are exchanged only between ports in passive and active modes. The protocol
"learns" the capabilities of LAN port groups dynamically and informs the other LAN ports. After LACP
identifies correctly matched Ethernet links, it facilitates grouping the links into an EtherChannel. Then
the EtherChannel is added to the spanning tree as a single bridge port.
Cisco IOS XE IP Application Services Features in Cisco IOS XE 3.1.0SG
This section lists the IP Application Services software features that are supported in Cisco IOS XE
3.1.0SG. Links to the feature documentation are included.
Feature guides may contain information about more than one feature. To find information about a
specific feature within a feature guide, see the Feature Information table at the end of the guide.
OL-25340-01
MLD is a protocol used by IPv6 multicast devices to discover the presence of multicast listeners
(nodes that want to receive IPv6 multicast packets) on its directly attached links and to discover
which multicast packets are of interest to neighboring nodes. MLD snooping is supported in two
different versions: MLD v1 and MLD v2. Network switches use MLD snooping to limit the flood
of multicast traffic, causing IPv6 multicast data to be selectively forwarded to a list of ports that want
to receive the data, instead of being flooded to all ports in a VLAN. This lessens the load on devices
in the network, minimizing unnecessary bandwidth on links, enabling efficient distribution of IPv6
multicast data.
For information on configuring multicast services, see
WS-X4306-GB: all ports
WS-X4232-GB-RJ: ports 1-2
WS-X4418-GB: ports 1-2
WS-X4412-2GB-TX: ports 13-14
WS-4648-RJ45V-E
WS-X4648+RJ45V+E
WS-X4706-10GE linecards
supervisor engine uplink ports
Chapter 7, "Configuring Interfaces."
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
Layer 2 Software Features
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