[c-nsp] 3850 and output drops

[Adrian Minta]

The 3750 do not report output drops due to buffers on "show interface", 
but they show up on "show interfaces summary".
The new models, cat3650  and cat3850 have the output drops shown on 
"show interface".

Both 3650 and 3850 seems to have 'mls qos' always on an no way to turn 
it off.
This url http://tinyurl.com/gr3p7q3 may help you.

On 09/06/2016 08:15 PM, Saku Ytti wrote:
> On 6 September 2016 at 19:58, Gert Doering <gert at greenie.muc.de> wrote:
>> Maybe "the 3750 has reasonable buffers, while the 3850 is from the
>> new regime of 'make it cheap, make small buffers' switches"...
> http://www.cisco.com/assets/global/DK/pdfs/cisco_virtual_update_-_unified_access_c3850.pdf
> https://people.ucsc.edu/~warner/buffer.html
>
> Seem to support that 3750 has about half the buffers compared to 3850,
> but double the queues.
>
> Even in 3750 enabling 'mls qos' makes things far worse for bursty
> packets, because you have less buffer for any specific queue, however
> correctly configured QoS and 3750 outperforms with 'mls qos' compared
> to without it.
> I assume 3850 configuration needs some thought too, to best cope with
> bursty traffic.
>

-- 
Best regards,
Adrian Minta