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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter31 Configuring EtherChannels Configuring EtherChannels
Configuring EtherChannels
These sections contain this configuration information:
•Default EtherChannel Configuration, page 31-9
•EtherChannel Configuration Guidelines, page 31-10
•Configuring Layer 2 EtherChannels, page 31-11 (required)
•Configuring Layer 3 EtherChannels, page 31-13 (required)
•Configuring EtherChannel Load Balancing, page 31-16 (optional)
•Configuring the PAgP Learn Method and Priority, page 31-17 (optional)
•Configuring LACP Hot-Standby Ports, page 31-18 (optional)
Note Make sure that the ports are correctly configured. For more information, see the “EtherChannel
Configuration Guidelines” section on page 31-10.
Note After you configure an EtherChannel, configuration chan ges appli ed to th e por t-ch anne l int erf ace ap pl y
to all the physical ports assigned to the port-channel interface, and configuration changes applied to the
physical port affect only the port to which you apply the configuration.

Default EtherChannel Configuration

Table31-3 shows the de fault Et herCh an nel co nfigurat ion .
Table31-3 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 NNIs.
PAgP priority 128 on all NNIs.
LACP mode No default.
LACP learn method Aggregate-port learning on all NNIs.
LACP port priority 32768 on all NNIs.
LACP system priority 32768.
LACP system ID LACP system priority and the switch MAC address.
Load balancing Load distribution on the switch is based on the
source-MAC address of the incoming packet.