34-11
Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 34 Configuring EtherChannels and Link-State Tracking
Configuring EtherChannels
Configuring EtherChannels
These sections contain this configuration information:
•
Default EtherChannel Configuration, page 34-11
•
EtherChannel Configuration Guidelines, page 34-12
•
Configuring Layer 2 EtherChannels, page 34-13
(required)
•
Configuring Layer 3 EtherChannels, page 34-15
(required)
•
Configuring EtherChannel Load Balancing, page 34-18
(optional)
•
Configuring the PAgP Learn Method and Priority, page 34-19
(optional)
•
Configuring LACP Hot-Standby Ports, page 34-20
(optional)
Note
Make sure that the ports are correctly configured. For more information, see the
“EtherChannel
Configuration Guidelines” section on page 34-12
.
Note
After you configure an EtherChannel, configuration changes applied to the port-channel interface apply
to all the physical ports assigned to the port-channel interface, and configuration changes applied to the
physical port affect only the port where you apply the configuration.
Default EtherChannel Configuration
Table 34-3
shows the default EtherChannel configuration.
Table 34-3
Default EtherChannel Configuration
Feature
Default Setting
Channel groups
None assigned.
Port-channel logical interface
None defined.
PAgP mode
No default.
PAgP learn method
Aggregate-port learning on all ports.
PAgP priority
128 on all ports.
LACP mode
No default.
LACP learn method
Aggregate-port learning on all ports.
LACP port priority
32768 on all ports.
LACP system priority
32768.
LACP system ID
LACP system priority and the stack MAC address.
Load balancing
Load distribution on the switch is based on the
source-MAC address of the incoming packet.
