Just to let you know I've done that lab again and I wasn't able to reproduce 
that issue... But I was on a different pod...

Regards,
Christophe

On 22 Nov 2011, at 17:50, marc abel wrote:

> Very interesting, what did you do to resolve it last time?
> 
> On Tue, Nov 22, 2011 at 2:15 AM, Christophe Lemaire
> <[email protected]> wrote:
>> Hi Marc,
>> 
>> Hmmm... Weird I had that exact same issue when doing that lab...
>> (excepted in my case Fa0/24 was flapping between trunk and access...)
>> 
>> I plan to do that lab again on Thursday, I let you know if it happened 
>> again...
>> 
>> Christophe
>> 
>> 
>> On Mon, Nov 21, 2011 at 12:34 AM, marc abel <[email protected]> wrote:
>>> It was Vol 3 lab 9 task 1.2
>>> 
>>> On Sun, Nov 20, 2011 at 5:15 PM, Jay McMickle <[email protected]> 
>>> wrote:
>>>> Marc- which task is it?
>>>> 
>>>> Regards,
>>>> Jay McMickle- CCNP,CCSP,CCDP
>>>> Sent from my iPhone
>>>> http://mycciepursuit.wordpress.com
>>>> 
>>>> 
>>>> On Nov 20, 2011, at 2:50 PM, Adam Booth <[email protected]> wrote:
>>>> 
>>>>> Hi Marc,
>>>>> 
>>>>> Do Fa0/23 and Fa0/24 have the same configurations?  For example is one 
>>>>> port
>>>>> switch access for instance, with the other able to negotiate a trunk using
>>>>> DTP?
>>>>> 
>>>>> Perhaps look at hard setting the interfaces to what you want
>>>>> 
>>>>> switchport trunk encapsulation dot1q
>>>>> switchport mode trunk
>>>>> switchport nonegotiate
>>>>> 
>>>>> Cheers,
>>>>> Adam
>>>>> 
>>>>> On Mon, Nov 21, 2011 at 5:54 AM, marc abel <[email protected]> wrote:
>>>>> 
>>>>>> I have two dynamic desirable trunks configured as an ether-channel and
>>>>>> one keeps un-bundling
>>>>>> 
>>>>>> Nov 20 19:49:06.347: %EC-5-CANNOT_BUNDLE2: Fa0/23 is not compatible
>>>>>> with Fa0/24 and will be suspended (trunk mode of Fa0/23 is access,
>>>>>> Fa0/24 is trunk)
>>>>>> Nov 20 19:49:07.335: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>>>>>> FastEthernet0/23, changed state to down
>>>>>> 
>>>>>> 
>>>>>> It then comes back up and everything seems fine for a bit and then it
>>>>>> happens again. Any idea what the issue could be or how to
>>>>>> troubleshoot? Obviously I could configure them as statically trunking
>>>>>> but a lab requirement prevents this.
>>>>>> 
>>>>>> Thank you,
>>>>>> 
>>>>>> Marc
>>>>>> _______________________________________________
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