Strange status of EtherChannel!

Dear all,

SW2(config)#do sh eth summ
Flags: D - down P - in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregato
U - unsuitable for bundling
W - waiting to be aggregated
D - default port
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------

12 Po12(SU) - Fa0/19(P) Fa0/20(P) Fa0/21(P) Fa0/22(P)
                                           Fa0/23() Fa0/24(P) Fa0/25P)
Fa0/26(P)

Each interface are shown as (P), except F0/23 (),What is the status of
F0/23? I have not saw it before, please help.

Many thanks,
But Nguyen.

P/S: This is question for OEQ, which I collected from internet, do not
require posting the configuration.

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Received on Thu Aug 27 2009 - 20:28:49 ART