I don't know where you got the table that you are referencing below... But you 
can never set threshold 3, it's 100 percent always: 
mls qos queue-set output X threshold X T1 T2 R M

T1 and T2 are self explanatory.
Then it's R for Reserved and M for Maximum. 

So to answer your question, yes you still need to move the needed CoS to T1 or 
T2, and assign 75 percent to it.

Hope this helps, 

Sent from my iPad

On 19 Feb 2012, at 20:47, Randall Crumm <rrcr...@yahoo.com> wrote:

> Looking at this closer.
> 
>                                OB queue       Queue 2                         
> T1      T2      T3      MAX
> mls qos queue-set output               2              threshold       75      
> 90      90      100 
> mls qos srr-queue output cos-map queue 1 threshold 3 (I thing the last part 
> of this may be wrong, should be a 1)
> 
> So looking at the DSG, (see above) what is confusing, is if COS 5 is already 
> in T3, from the auto qos, why move it to T1. I would say keeping it in T3 is 
> easier (see below).
> 
>                                OB queue       Queue 2                         
> T1      T2      T3 
>       MAX
> mls qos queue-set output               2              threshold       50      
> 60      75      100 
> 
> Any thoughts experts?
> 
>  
> Cheers,
> Randall
> 
> From: Randall Crumm <rrcr...@yahoo.com>
> To: Online Study <ccie_voice@onlinestudylist.com> 
> Sent: Sunday, February 19, 2012 11:15 AM
> Subject: New lab #2 - 3750 Qos
> 
> HI,
> I have a question on Qos
> 1. The question wants COS 3 i n the 2nd egress queue, 3rd threshold and COS 5 
> in the 1st egress queue 3rd threshold.
> This is done after running auto qos on the phone switchport. No question
> 
> 2. COS 5  traffic sent to SA-GW(queue set 2) should be dropped if queue is 
> 75% full.  
>       Can someone please explain the answer to me. The DSG is not clear to me.
> 
> Thanks,
> 
> 
>  
> Cheers,
> Randall
> 
> 
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