MindMap Gallery Ether Channel

Ether Channel

EtherChannel is a port link aggregation technology or port-channel architecture used primarily on Cisco switches.

Edited at 2020-10-10 06:08:28

Fiona_

Ether Channel

Fiona_

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EtherChannel

Types

Static (Manual Assignment)

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

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

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