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Cisco WS-C3560E-24PD-E User Manual

Cisco WS-C3560E-24PD-E
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2-286
Catalyst 3560 Switch Command Reference
78-16405-05
Chapter 2 Catalyst 3560 Switch Cisco IOS Commands
pagp learn-method
pagp learn-method
Use the pagp learn-method interface configuration command to learn the source address of incoming
packets received from an EtherChannel port. Use the no form of this command to return to the default
setting.
pagp learn-method {aggregation-port | physical-port}
no pagp learn-method
Syntax Description
Defaults The default is aggregation-port (logical port channel).
Command Modes Interface configuration
Command History
Usage Guidelines The learn method must be configured the same at both ends of the link.
Note The Catalyst 3560 switch supports address learning only on aggregate ports even though the
physical-port keyword is provided in the command-line interface (CLI). The pagp learn-method and
the pagp port-priority interface configuration commands have no effect on the switch hardware, but
they are required for PAgP interoperability with devices that only support address learning by physical
ports, such as the Catalyst 1900 switch.
When the link partner to the Catalyst 3560 switch is a physical learner, we recommend that you configure
the switch as a physical-port learner by using the pagp learn-method physical-port interface
configuration command and to set the load-distribution method based on the source MAC address by
using the port-channel load-balance src-mac global configuration command. Use the pagp
learn-method interface configuration command only in this situation.
aggregation-port Specify address learning on the logical port-channel. The switch sends
packets to the source using any of the ports in the EtherChannel. This setting
is the default. With aggregate-port learning, it is not important on which
physical port the packet arrives.
physical-port Specify address learning on the physical port within the EtherChannel. The
switch sends packets to the source using the same port in the EtherChannel
from which it learned the source address. The other end of the channel uses
the same port in the channel for a particular destination MAC or IP address.
Release Modification
12.1(19)EA1 This command was introduced.

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Cisco WS-C3560E-24PD-E Specifications

General IconGeneral
BrandCisco
ModelWS-C3560E-24PD-E
CategorySwitch
LanguageEnglish

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