Configuring The Pagp Learn Method And Priority; Displaying Etherchannel And Pagp Status - Cisco 2950G 24 - Catalyst Switch Software Configuration Manual

Chapter 27 Configuring EtherChannels
Command
Step 4 show etherchannel load-balance
Step 5
copy running-config startup-config
To return EtherChannel load balancing to the default configuration, use the no port-channel
load-balance global configuration command.

Configuring the PAgP Learn Method and Priority

Network devices are classified as PAgP physical learners or aggregate-port learners. A device is a
physical learner if it learns addresses by physical ports and directs transmissions based on that
knowledge. A device is an aggregate-port learner if it learns addresses by aggregate ports.
For compatibility with Catalyst 1900 series switches, configure the Catalyst 2950 switches for
source-MAC load distribution.
The Catalyst 2950 switch supports address learning only on aggregate ports even though the
physical-port keyword is provided in the command-line interface (CLI). The pagp learn-method and
the pagp port-priority interface configuration command have no effect on the switch hardware.
Note You should not set the learn method to physical-port because the switch is an aggregate-learning device.
If the link partner to the switch is a physical learner that has the channel-group interface configuration
command set to auto or desirable, the switch automatically uses the load-distribution method based on
the source MAC address, regardless of the configured load distribution method.
If the link partner to the Catalyst 2950 switch is a physical learner that has the channel-group interface
configuration command set to on, set the load-distribution method based on the source MAC address by
using the port-channel load-balance src-mac global configuration command.

Displaying EtherChannel and PAgP Status

You can use the privileged EXEC commands described in
status information:
Table 27-3 Commands for Displaying EtherChannel and PAgP Status
Command
show etherchannel [channel-group-number] {brief |
detail | load-balance | port | port-channel | summary}
show pagp [channel-group-number] {counters |
1
internal | neighbor}
1. You can clear PAgP channel-group information and traffic filters by using the clear pagp {channel-group-number
EXEC command.
For detailed information about the fields in the displays, refer to the command reference for this release.
78-14982-01
Purpose
Verify your entries.
(Optional) Save your entries in the configuration file.
Table 27-3
Description
Displays EtherChannel information in a brief, detailed, and
one-line summary form. Also displays the load-balance or
frame-distribution scheme, port, and port-channel information.
Displays PAgP information such as traffic information, the
internal PAgP configuration, and neighbor information.
Catalyst 2950 Desktop Switch Software Configuration Guide
Displaying EtherChannel and PAgP Status
to display EtherChannel and PAgP
[
counters] | counters} privileged
27-11