Default Etherchannel Configuration; Etherchannel Configuration Guidelines - Cisco IE-3000-8TC Software Configuration Manual

Chapter 38 Configuring EtherChannels and Link-State Tracking
Make sure that the ports are correctly configured. For more information, see the
Note
Configuration Guidelines" section on page
After you configure an EtherChannel, configuration changes applied to the port-channel interface apply
Note
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 38-3
Table 38-3
Feature
Channel groups
Port-channel logical interface
PAgP mode
PAgP learn method
PAgP priority
LACP mode
LACP learn method
LACP port priority
LACP system priority
LACP system ID
Load balancing

EtherChannel Configuration Guidelines

If improperly configured, some EtherChannel ports are automatically disabled to avoid network loops
and other problems. Follow these guidelines to avoid configuration problems:
•
•
•
•
•
OL-13018-03
shows the default EtherChannel configuration.
Default EtherChannel Configuration
Do not try to configure more than 6 EtherChannels on the switch.
Configure a PAgP EtherChannel with up to eight Ethernet ports of the same type.
Configure a LACP EtherChannel with up to16 Ethernet ports of the same type. Up to eight ports can
be active, and up to eight ports can be in standby mode.
Configure all ports in an EtherChannel to operate at the same speeds and duplex modes.
Enable all ports in an EtherChannel. A port in an EtherChannel that is disabled by using the
shutdown interface configuration command is treated as a link failure, and its traffic is transferred
to one of the remaining ports in the EtherChannel.
38-9.
Default Setting
None assigned.
None defined.
No default.
Aggregate-port learning on all ports.
128 on all ports.
No default.
Aggregate-port learning on all ports.
32768 on all ports.
32768.
LACP system priority and the switch MAC address.
Load distribution on the switch is based on the
source-MAC address of the incoming packet.
Cisco IE 3000 Switch Software Configuration Guide
Configuring EtherChannels
"EtherChannel
38-9