Configuring Etherchannel Load Balancing - Cisco Catalyst 2950 Software Manual

Understanding the EtherChannel
If you delete the EtherChannel is by using the no interface port-channel global configuration command
without removing the physical interfaces, the physical interfaces are shutdown. If you do not want the
member physical interfaces to shut down, remove the physical interfaces before deleting the
EtherChannel.
To remove an interface from the EtherChannel group, use the no channel-group interface configuration
command.
This example shows how to assign Gigabit Ethernet interfaces 0/1 and 0/2 with PAgP mode desirable:
Switch# configure terminal
Switch(config)# interface range gigabitethernet0/1 -2
Switch(config-if)# channel-group 5 mode desirable
Switch(config-if)# end

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
and Forwarding Methods" section on page
Beginning in privileged EXEC mode, follow these steps to configure EtherChannel load balancing:
Command
Step 1 configure terminal
Step 2
port-channel load-balance {dst-mac | src-mac} Configure an EtherChannel load-balancing method.
Step 3
end
Catalyst 2950 Desktop Switch Software Configuration Guide
10-16
10-12.
Purpose
Enter global configuration mode.
The default is src-mac.
Select one of these keywords to determine the load-distribution
method:
• dst-mac—Load distribution is based on the destination-host
MAC address of the incoming packet. Packets to the same
destination are sent on the same port, but packets to different
destinations are sent on different ports in the channel.
src-mac—Load distribution is based on the source-MAC
•
address of the incoming packet. Packets from different hosts
use different ports in the channel, but packets from the same
host use the same port in the channel.
If the link partner to the switch is a physical learner, set the
load-distribution method to one of these ways:
• If the channel-group interface configuration command is
set to auto or desirable, the switch automatically uses the
load distribution method based on the source-MAC address,
regardless of the configured load-distribution method.
• If the channel-group interface configuration command is
set to on, set the load-distribution method based on the
source-MAC address by using the port-channel
load-balance src-mac global configuration command.
Return to privileged EXEC mode.
Chapter 10 Configuring the Switch Ports
"Understanding Load Balancing
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