Load Balancing Using Port Channels - Cisco AJ732A - MDS 9134 Fabric Switch Configuration Manual

Chapter 11 Configuring Port Channels
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
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Use the show port-channel compatibility-parameters command to see the full list of compatibility
checks that Cisco NX-OS uses.
You can only add interfaces configured with the channel mode set to on to static port channels. You can
also only add interfaces configured with the channel mode as active or passive to port channels that are
running LACP. (See the
modes.) You can configure these attributes on an individual member port.
When the interface joins a port channel, the following individual parameters are replaced with the values
on the port channel:
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The following interface parameters remain unaffected when the interface joins a port channel:
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Load Balancing Using Port Channels

Cisco NX-OS load balances traffic across all operational interfaces in a port channel by reducing part of
the binary pattern formed from the addresses in the frame to a numerical value that selects one of the
links in the channel. Port channels provide load balancing by default and the basic configuration uses
the following criteria to select the link:
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You can configure the switch to use one of the following methods to load balance across the port channel:
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OL-16597-01
Priority-Flow-Control
"Port-Channel Modes" section on page 11-6
Bandwidth
MAC address
Spanning Tree Protocol
Description
CDP
LACP port priority
Debounce
For a Layer 2 frame, it uses the source and destination MAC addresses.
For a Layer 3 frame, it uses the source and destination MAC addresses and the source and
destination IP addresses.
For a Layer 4 frame, it uses the source and destination MAC addresses, the source and destination
IP addresses, and the source and destination port number.
Destination MAC address
Source MAC address
Source and destination MAC address
Destination IP address
Source IP address
Source and destination IP address
Destination TCP/UDP port number
Source TCP/UDP port number
Source and destination TCP/UDP port number
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Information About Port Channels
for information on port-channel
11-3