38-16
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 38 Configuring EtherChannels and Link-State Tracking
Configuring EtherChannels
Configuring EtherChannel Load Balancing
This section describes how to configure EtherChannel load balancing by using source-based or
destination-based forwarding methods. For more information, see the “Load Balancing and Forwarding
Methods” section on page 38-8.
Beginning in privileged EXEC mode, follow these steps to configure EtherChannel load balancing. This
procedure is optional.
To return EtherChannel load balancing to the default configuration, use the no port-channel
load-balance global configuration command.
Configuring the PAgP Learn Method and Priority
Network devices are classified as PAgP physical learners or aggregate-port learners. A device is a
physical learner if it learns addresses by physical ports and directs transmissions based on that
knowledge. A device is an aggregate-port learner if it learns addresses by aggregate (logical) ports. The
learn method must be configured the same at both ends of the link.
When a device and its partner are both aggregate-port learners, they learn the address on the logical
port-channel. The device sends packets to the source by using any of the ports in the EtherChannel. With
aggregate-port learning, it is not important on which physical port the packet arrives.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
port-channel load-balance {dst-ip | dst-mac |
src-dst-ip | src-dst-mac | src-ip | src-mac}
Configure an EtherChannel load-balancing method.
The default is src-mac.
Select one of these load-distribution methods:
• dst-ip—Load distribution is based on the destination-host IP
address.
• dst-mac—Load distribution is based on the destination-host
MAC address of the incoming packet.
• src-dst-ip—Load distribution is based on the
source-and-destination host-IP address.
• src-dst-mac—Load distribution is based on the
source-and-destination host-MAC address.
• src-ip—Load distribution is based on the source-host IP
address.
• src-mac—Load distribution is based on the source-MAC
address of the incoming packet.
Step 3
end Return to privileged EXEC mode.
Step 4
show etherchannel load-balance Verify your entries.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
To Next Page
Loading...
