WS-X6904-40G 10G non-oversubscription mode

[Ralf Kleineisel]

Hi,

we are running a VSS-1440 (Two 6509-E) with VS-SUP2T-10G and WS-X6904-40G. The WS-X6904-40G have FourX adapters installed. They are configured in non-oversubscription mode:

#sh hw-module switch 1 slot 1 oversubscription
port-group      oversubscription-mode
1               disabled
2               disabled
#sh hw-module switch 2 slot 1 oversubscription
port-group      oversubscription-mode
1               disabled
2               disabled

As I hadn't read the documentation too carefully I had assumed that I could run interfaces Te1/1/5-12 and
Te2/1/5-12. I started to use interfaces 5, 6, 7, 8 and 9 without problems.

Then I configured Te1/1/10. No problem.

Then I tried to enable Te2/1/10 and got this error:

Current module is operating in non-oversubscription mode.
To utilise port 10 of switch 2 module 1, enable oversubscription mode.

After reading the documentation more carefully I found out that in non-oversubscription mode I have to use ports Te1/1/5-8 and Te1/1/13-16.

But why was I able to use Te1/1/9 and Te1/1/10 in the first place? Shouldn't the switch complain when I try to use port 9? Is this a bug?

[Ralf Kleineisel]

Another funny thing:

When I try to disable Port 9 the switch won't let me shut it down:

(config)#int Te1/1/9
(config-if)#shut
Current module is operating in non-oversubscription mode.
To utilise port 9 of switch 1 module 1, enable oversubscription mode.

#sh int Te1/1/9 status

Port         Name               Status       Vlan       Duplex  Speed Type
Te1/1/9                            connected    trunk        full    10G 10Gbase-LR

This is definitely a bug, isn't it?