Configuring The Lacp Port Priority - Cisco Catalyst 3550 series Software Configuration Manual

Configuring EtherChannels
Command
Step 6 show running-config
or
show pagp channel-group-number internal
Step 7 copy running-config startup-config
To return the priority to its default setting, use the no pagp port-priority interface configuration
command. To return the learning method to its default setting, use the no pagp learn-method interface
configuration command.

Configuring the LACP Port Priority

You can set the priority for each port in an EtherChannel that is configured for LACP by using the
lacp port-priority privileged EXEC command. The range is from 1 to 65535. Beginning in privileged
EXEC mode, follow these steps to configure the LACP port priority:
Command
Step 1
configure terminal
Step 2
interface interface-id
Step 3 lacp port-priority priority-value
Step 4 end
Step 5
show running-config
or
show lacp channel-group-number
internal
Step 6
copy running-config startup-config
Configuring Hot Standby Ports
When enabled, LACP tries to configure the maximum number of LACP-compatible ports in a channel,
up to a maximum of 16 ports. Only eight LACP links can be active at one time. Any additional links are
put in a hot standby state. If one of the active links becomes inactive, a link that is in hot standby mode
becomes active in its place.
If more than eight links are configured for an EtherChannel group, the software determines which of the
hot standby ports to make active based on:
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•
Catalyst 3550 Multilayer Switch Software Configuration Guide
30-16
LACP port-priority
Port ID
Purpose
Verify your entries.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enter interface configuration mode, and specify the interface for
transmission.
Select the LACP port priority value.
For priority-value, the range is 1 to 65535. By default, the priority value
is 32768. The lower the range, the more likely that the interface will be
used for LACP transmission.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Chapter 30 Configuring EtherChannels
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