6-7
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 6 Configuring EtherChannel
Configuring an EtherChannel Using PAgP
PAgP Administrative Groups
Configuring an EtherChannel creates an administrative group, which is designated by an integer between
1 and 1024, to which the EtherChannel belongs. When an administrative group is created, you can assign
an administrative group number or let the next available administrative group number be assigned
automatically. Forming a channel without specifying an administrative group number creates a new
automatically numbered administrative group. An administrative group may contain a maximum of eight
ports.
Enter the show channel group command to verify that all ports in an EtherChannel belong to the same
administrative group, and enter the set port channel mod/ports admin_group command if necessary to
assign ports to the same administrative group.
PAgP EtherChannel IDs
Each EtherChannel is automatically assigned a unique EtherChannel ID. Enter the show channel group
admin_group command to display the EtherChannel ID.
Configuring an EtherChannel Using PAgP
These sections describe how to configure an EtherChannel using PAgP:
• Specifying the EtherChannel Protocol, page 6-7
• Configuring an EtherChannel, page 6-8
• Setting the EtherChannel Port Mode, page 6-8
• Setting the EtherChannel Port Path Cost, page 6-9
• Setting the EtherChannel VLAN Cost, page 6-9
• Configuring EtherChannel Load Balancing, page 6-11
• Displaying EtherChannel Traffic Utilization, page 6-11
• Displaying the Outgoing Ports for a Specified Address or Layer 4 Port Number, page 6-12
• Disabling an EtherChannel, page 6-12
Note Before you configure the EtherChannel, see the “EtherChannel Configuration Guidelines” section on
page 6-3.
Specifying the EtherChannel Protocol
Note The default protocol is PAgP.
Note You can specify only one protocol, PAgP or LACP, per module.
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