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Ether Channel

EtherChannel
Types
Static (Manual Assignment)
On
Dynamic (Negotiation)
LACP
(Industry Standard) Link Aggregation Control Protocol
PAgP
(Cisco Proprietary) Port Aggregation Protocol
Requirements
Layer 2
Identical Port Configurations
Speed
Duplex Mode
Trunk Mode
Native VLAN Configuration
Allowed VLAN Configuration
Port Type (Layer 2 or Layer 3)
Identical EtherChannel Configurations
PAgP
Dynamic Desirable
Dynamic Auto
LACP
Active
Passive
On
Appropriate Choice of Load-Balance Distribution Algorithm
Layer 3
Identical Port Configurations
Speed
Duplex Mode
Port Type (Layer 2 or Layer 3)
Identical EtherChannel Configurations
PAgP
Dynamic Desirable
Dynamic Auto
LACP
Active
Passive
On
Initial Port Type during Configuration
Using Layer 2 ports to create an EtherChannel with the channel-group command automatically creates a Layer 2 EtherChannel.
Appropriate Choice of Load-Balance Distribution Algorithm
Configuration
Specifies the port-channel interface to configure, and enters the interface configuration mode. The range is from 1 to 4096. Cisco NX-OS automatically creates the channel group if it does not already exist.
switch(config)# interface port-channel <channel-number>
Specifies the load-balancing algorithm for the device. The range depends on the device. The default is source-dest-mac.
switch(config)# port-channel load-balance ethernet {destination-ip | destination-mac | destination-port | source-dest-ip | source-dest-mac | source-dest-port | source-ip | source-mac | source-port}
Specifies the port mode for the link in an EtherChannel. The LACP feature must be enabled to configure a link or the entire channel as active or passive.
(If using LACP) switch(config)# feature lacp
channel-group channel-group-number mode
{auto [non-silent] | desirable [non-silent] | on} |
{active | passive}
Troubleshooting
Displays the status of port-channels as well as the status of the ports within the port channel
show etherchannel summary
Displays the EtherChannel load-balance algorithm configured on the switch
show etherchannel load-balance
69
author vip Fiona_
EtherChannel is a port link aggregation technology or port-channel architecture used primarily on Cisco switches.
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