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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter31 Configuring EtherChannels
Configuring EtherChannels
To return the LACP system priority to the default value, use the no lacp system-priority global
configuration command.
Configuring the LACP Port Priority
By default, all ports use the same port priority. If the local system has a lower value for the system
priority and the system ID than the remote system, you can affect which of the hot-stand by links become
active first by changing the port priority of LACP EtherChannel ports to a lower value than the default.
The hot-standby ports that have lower port numbers become active in the cha nnel first. You can use the
show etherchannel summary privileged EXEC command to see which ports are in the hot-standby
mode (denoted with an H port-state flag).
Note If LACP is not able to aggregate all the ports that are compatible (for example, the remote system might
have more restrictive hardware limitations), all the ports that cannot be actively included in the
EtherChannel are put in the hot-standby state and are use d on ly if o ne of the ch an nel ed por ts fai ls.
Beginning in privileged EXEC mode, follow these steps to configure the LACP port priority. This
procedure is optional.
To return the LACP port priority to the default value, use the no lacp port-priority interface
configuration command.
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 interface interface-id Specify the port to be configured, and enter interface configuration
mode.
Note If the interface is a UNI, you must enter the port-type nni
interface configuration command before configuring LACP.
Step3 lacp port-priority priority Configure the LACP port priority.
For priority, the range is 1 to 65535. The is 32768. The lower the value,
the more likely that the port will be used for LACP transmission.
Step4 end Return to privileged EXEC mode.
Step5 show running-config
or
show lacp [channel-group-number]
internal
Verify your entries.
Step6 copy running-config startup-config (Optional) Save your entries in the configuration file.