A trunk formed with another switch using LACP will automatically be
◆
assigned the next available port-channel ID.
If the target switch has also enabled LACP on the connected ports, the
◆
trunk will be activated automatically.
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.
E
XAMPLE
The following shows LACP enabled on ports 1-3. Because LACP has also
been enabled on the ports at the other end of the links, the
status port-channel 1
command shows that Trunk1 has been established.
Console(config)#interface ethernet 1/1
Console(config-if)#lacp
Console(config-if)#interface ethernet 1/2
Console(config-if)#lacp
Console(config-if)#interface ethernet 1/3
Console(config-if)#lacp
Console(config-if)#end
Console#show interfaces status port-channel 1
Information of Trunk 1
Basic Information:
Port Type
MAC Address
Configuration:
Name
Port Admin
Speed-duplex
Capabilities
Broadcast Storm
Broadcast Storm Limit
Multicast Storm
Multicast Storm Limit
Unknown Unicast Storm
Unknown Unicast Storm Limit : 64 kbits/second
Flow Control
VLAN Trunking
Current status:
Created By
Link Status
Port Operation Status
Operation speed-duplex : 1000full
Up Time
Flow Control Type
Max Frame Size
MAC Learning Status
Member Ports
Active Member Ports
Console#
– 983 –
| Link Aggregation Commands
C
28
HAPTER
Dynamic Configuration Commands
: 1000BASE-T
: 70-72-CF-1C-BA-53
:
: Up
: Auto
: 10half, 10full, 100half, 100full, 1000full
: Enabled
: 64 kbits/second
: Disabled
: 64 kbits/second
: Disabled
: Disabled
: Disabled
: LACP
: Up
: Up
: 0w 0d 0h 0m 48s (48 seconds)
: None
: 1518 bytes (1522 bytes for tagged frames)
: Enabled
: Eth1/1, Eth1/2, Eth1/3,
: Eth1/1, Eth1/2, Eth1/3,
show interfaces