Link Aggregation Control Protocol - Cisco Catalyst 4500 series Administration Manual

Chapter 1 Product Overview
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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.
Feature guides document features that are supported on many different software releases and platforms.
Your Cisco software release or platform may not support all the features documented in a feature guide.
See the Feature Information table at the end of the feature guide for information about which features in
that guide are supported in your software release. Use Cisco Feature Navigator to find information about
platform support and Cisco software image support. To access Cisco Feature Navigator, go to
http://www.cisco.com/go/cfn. An account on Cisco.com is not required.
IEEE 802.3ad Link Aggregation (LACP)
ttp://www.cisco.com/en/US/docs/ios/cether/configuration/guide/ce_lnkbndl.html
Link Aggregation Control Protocol (LACP) (802.3ad) for Gigabit Interfaces
http://www.cisco.com/en/US/docs/ios/ios_xe/cether/configuration/guide/ce_lnkbndl_xe.html
Link Layer Discovery Protocol
To support non-Cisco devices and to allow for interoperability between other devices, the switch
supports the IEEE 802.1AB LLDP. Link Layer Discovery Protocol (LLDP) is a neighbor discovery
protocol that is used for network devices to advertise information about themselves to other devices on
the network. This protocol runs over the data-link layer, which allows two systems running different
network layer protocols to learn about each other.
LLDP supports a set of attributes that it uses to discover neighbor devices. These attributes contain type,
length, and value descriptions and are referred to as TLVs. LLDP supported devices can use TLVs to receive
and send information to their neighbors. Details such as configuration information, device capabilities,
and device identity can be advertised using this protocol.
OL-30933-01
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 8, "Configuring Interfaces."
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
Layer 2 Software Features
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