[c-nsp] effect of 'mls qos'

[Mike]

On 06/01/2015 01:51 PM, Peter Rathlev wrote:
> On Mon, 2015-06-01 at 20:13 +0200, Peter Rathlev wrote:
>> You can enable QoS and adjust the defaults to get something noticeably
>> better than without "mls qos". Take a look at this template we have been
>> using for some time now:
>>
>>    http://ampere.rathlev.dk/3560-3750-QoS-basis-template.txt
> And if you just want to avoid the problems associated with small buffers
> and don't care about any actual "QoS" you can just add something like:
>
> mls qos queue-set output 1 threshold 1 3100 3100 100 3200
> mls qos queue-set output 1 threshold 2 3100 3100 100 3200
> mls qos queue-set output 1 threshold 3 3100 3100 100 3200
> mls qos queue-set output 1 threshold 4 3100 3100 100 3200
> mls qos
>
> This lets the interfaces use (almost) as much as possible from the
> common buffers on the switch.
>
> The "QoS Overview" chapter of the "Cisco Catalyst 3750 QoS Configuration
> Examples" document explains the architecture:
>
> http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91862-cat3750-qos-config.html#topic1
>

Thank you so much for sharing. And yes, in my particular setup, I don't 
care about actual QoS at this level, but having something was thought to 
be better than nothing. In general I find the QoS setups to be really 
difficult to grasp. I'm going to toy with yours however.

Thanks.


Mike-