Port-channel members state up/down

[sheffsix]

I'm seeing some unexpected behaviour on the CBS350 series of switches. A port-channel member interface will remain Up even when admin state is Down. With switches from other manufacturers, the shutdown option can be set independently of the Po. Is this normal for Cisco gear or do I need to report a bug? 

Thanks
James

#show running-config interface gi9
interface GigabitEthernet9
shutdown
channel-group 1 mode auto
no switchport
!

#show interfaces configuration gi9
                                            Flow    Admin Back     Mdix
Port     Type         Duplex Speed Neg      control State Pressure Mode
-------- ------------ ------ ----- -------- ------- ----- -------- ----
gi9      1G-Combo-F   Full   1000  Enabled  Off     Down  Disabled Auto

#show interfaces status gi9
                                            Flow Link        Back     Mdix
Port     Type         Duplex Speed Neg      ctrl State       Pressure Mode
-------- ------------ ------ ----- -------- ---- ----------- -------- -------
gi9      1G-Combo-F   Full   1000  Disabled Off  Up          Disabled Off

[Jitendra Kumar]

Well described by @Peter Paluch

https://community.cisco.com/t5/switching/lacp-port-channel-down-but-individual-ports-up/m-p/2501265

Putting the EtherChannel to the "on" mode will force the ports to become bundled unconditionally but the true problem, then, is truly seeing if it works. The Cisco switch will happily keep the ports bundled and will even transmit data over these ports but how do we know if Oracle is happy with that and does the same?

Personally, I would not recommend using the "on" mode precisely because of lack of any indication that things are operating just as they should, unless it can be shown without doubts that Oracle runs without LACP and uses a static EtherChannel.

[David Ruess]

Hello,

I'd have to lab this up later but best guess is that being bundled and being up are separate processed. While it can be shutdown that doesn't mean it removed it from the bundle. So the state og bundling could still be up if it is in fact in the bundle regardless if the port is shutdown or not.

-David