Configuring the Switch
3-116
3
CLI – This example creates trunk 2 with ports 1 and 2. Just connect these ports to
two static trunk ports on another switch to form a trunk.
Enabling LACP on Selected Ports
Command Usage
• To avoid creating a loop in the network, be sure
you enable LACP before connecting the ports,
and also disconnect the ports before disabling
LACP.
• If the target switch has also enabled LACP on the
connected ports, the trunk will be activated
automatically.
• A trunk formed with another switch using LACP
will automatically be assigned the next available
trunk ID.
• If more than eight ports attached to the same
target switch have LACP enabled, the additional ports w ill be placed in standby
mode, and will only be enabled if one of the active links fails.
• All ports on both ends of an LACP trunk must be configured for full duplex, and
auto-negotiation.
• Trunks dynamically established through LACP will also be shown in the Member
List on the Trunk Membership menu (see page 3-115).
Console(config)#interface port-channel 2 4-166
Console(config-if)#exit
Console(config)#interface ethernet 1/1 4-166
Console(config-if)#channel-group 2 4-181
Console(config-if)#exit
Console(config)#interface ethernet 1/2
Console(config-if)#channel-group 2
Console(config-if)#end
Console#show interfaces status port-channel 2 4-173
Information of Trunk 2
Basic information:
Port type: 100FX
Mac address: 00-12-CF-12-34-84
Configuration:
Name:
Port admin: Up
Speed-duplex: Auto
Capabilities: 10half, 10full, 100half, 100full
Flow control: Disabled
Port security: Disabled
Max MAC count: 0
Current status:
Created by: User
Link status: Up
Port operation status: Up
Operation speed-duplex: 100full
Flow control type: None
Member Ports: Eth1/1, Eth1/2,
Console#
active
links
}
}dynamically
enabled
configured
members
backup
link