Configuring The Lacp Port Priority - Cisco Catalyst 2960-XR Configuration Manual

Configuring EtherChannels
DETAILED STEPS
Command or Action
Step 1
configure terminal
Example:
Switch# configure terminal
Step 2 lacp system-priority priority
Example:
Switch(config)# lacp system-priority 32000
Step 3 end
Example:
Switch(config)# end
Related Topics
EtherChannel Configuration Guidelines, on page 120
Default EtherChannel Configuration, on page 119
Layer 2 EtherChannel Configuration Guidelines, on page 122
Monitoring EtherChannel, PAgP, and LACP Status, on page 135

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-standby 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 channel 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).
If LACP is not able to aggregate all the ports that are compatible (for example, the remote system might
Note
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 used only if one of the channeled ports fails.
Beginning in privileged EXEC mode, follow these steps to configure the LACP port priority. This procedure
is optional.
OL-29424-01
Purpose
Enters global configuration mode.
Configures the LACP system priority.
For priority, the range is 1 to 65535. The default is 32768.
The lower the value, the higher the system priority.
Returns to privileged EXEC mode.
Catalyst 2960-XR Switch Layer 2 Configuration Guide, Cisco IOS Release 15.0(2)EX1
Configuring LACP Hot-Standby Ports
133