Configuring Etherchannel Load Balancing - Cisco Catalyst 3550 series Software Configuration Manual

Configuring EtherChannels
This example shows how to assign Gigabit Ethernet interfaces 0/4 and 0/5 to channel 5 with the PAgP
mode desirable:
Switch# configure terminal
Switch(config)# interface range gigabitethernet0/4 -5
Switch(config-if-range)# no ip address
Switch(config-if-range)# channel-group 5 mode desirable
Switch(config-if-range)# 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
Step 4
show etherchannel load-balance
Step 5 copy running-config startup-config
To return EtherChannel load balancing to the default configuration, use the no port-channel
load-balance global configuration command.
Catalyst 3550 Multilayer Switch Software Configuration Guide
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30-6.
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.
When src-mac is used, load distribution based on the source
and destination IP address is also enabled. For all IP traffic
being routed, the switch chooses a port for transmission
based on the source and destination IP address. Packets
between two IP hosts always use the same port for packet
transmission, but packets between any other pair of hosts
might use a different transmission port.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Chapter 30 Configuring EtherChannels
"Understanding Load Balancing
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