Cisco Systems 3560 Manual De Usuario
35-9
Catalyst 3560 Switch Software Configuration Guide
OL-8553-06
Chapter 35 Configuring EtherChannels and Link-State Tracking
Configuring EtherChannels
Note
Make sure that the ports are correctly configured. For more information, see the
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.
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
shows the default EtherChannel configuration.
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:
and other problems. Follow these guidelines to avoid configuration problems:
•
Do not try to configure more than 48 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.
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.
shutdown interface configuration command is treated as a link failure, and its traffic is transferred
to one of the remaining ports in the EtherChannel.
Table 35-3
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 switch MAC address.
Load balancing
Load distribution on the switch is based on the
source-MAC address of the incoming packet.
source-MAC address of the incoming packet.