Cisco 2950G 24 Software Configuration Guide - Page 561
Configuring the PAgP Learn Method and Priority, Displaying EtherChannel and PAgP Status
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Chapter 27 Configuring EtherChannels Displaying EtherChannel and PAgP Status Step 4 Step 5 Command show etherchannel load-balance copy running-config startup-config Purpose Verify your entries. (Optional) Save your entries in the configuration file. 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 Table 27-3 to display EtherChannel and PAgP status information: Table 27-3 Commands for Displaying EtherChannel and PAgP Status Command Description show etherchannel [channel-group-number] {brief | Displays EtherChannel information in a brief, detailed, and detail | load-balance | port | port-channel | summary} one-line summary form. Also displays the load-balance or frame-distribution scheme, port, and port-channel information. show pagp [channel-group-number] {counters | internal | neighbor}1 Displays PAgP information such as traffic information, the internal PAgP configuration, and neighbor information. 1. You can clear PAgP channel-group information and traffic filters by using the clear pagp {channel-group-number [counters] | counters} privileged EXEC command. For detailed information about the fields in the displays, refer to the command reference for this release. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 27-11