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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 will 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