[c-nsp] effect of 'mls qos'

[Peter Rathlev]

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

-- 
Peter