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Catalyst 3550 Multilayer Switch Command Reference
OL-8566-02
Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
channel-protocol
channel-protocol
Use the channel-protocol interface configuration command to configure an EtherChannel for the Port
Aggregation Protocol (PAgP) or Link Aggregation Control Protocol (LACP). Use the no form of this
command to disable PAgP or LACP on the EtherChannel.
channel-protocol {lacp | pagp}
no channel-protocol
Syntax Description
Defaults No protocol is assigned to the EtherChannel.
Command Modes Interface configuration
Command History
Usage Guidelines Use the channel-protocol command only to restrict a channel to LACP or PAgP.
You must use the channel-group interface command to configure the EtherChannel parameters. The
channel-group command can also set the EtherChannel for a channel.
Note You cannot enable both PAgP and LACP modes on an EtherChannel group.
Caution Do not enable Layer 3 addresses on the physical EtherChannel interfaces. To prevent loops, do not
assign bridge groups on the physical EtherChannel interfaces.
Examples This example shows how to set an EtherChannel into PAgP mode:
Switch(config-if)# channel-protocol pagp
This example shows how to set an EtherChannel into LACP mode:
Switch(config-if)# channel-protocol lacp
You can verify your settings by entering the show running-config privileged EXEC command.
lacp Configure an EtherChannel with the LACP protocol.
pagp Configure an EtherChannel with the PAgP protocol.
Release Modification
12.1(12c)EA1 This command was introduced.
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