A perl script to assist with summarizing QoS counts on Cisco Catalyst 37xx and 35xx series switches

[Jesse McGraw <jlmcgraw () gmail com>]

https://github.com/jlmcgraw/networkUtilities/blob/master/parseMlsQosInterfaceStatistics.pl

I whipped up this perl script as part of some troubleshooting I was 
doing and I'd thought I send it out to NANOG in case anyone else might 
find it useful (Note that you may need to install some additional perl 
libraries, see the setup.sh file in that repository for installing 
them).  I've only tested this with Ubuntu flavors of Linux, your OS 
might not work out of the bag.

What it does is take the output of "show mls qos interface statistics", 
which lists COS/DSCP/Queue counters by individual interface, from a file 
and summarize all of those numbers into overall totals.

This will (theoretically) give you a more holistic view of the markings 
of traffic in/out of the switch along with which queues are dropping 
packets.  This will hopefully assist in more intelligent allocation of 
queue buffers and thresholds etc.

If you have any thoughts on improvements or bug fixes I'd love to hear them


-Jesse

Output should look something like this:

          'cos:incoming ( Tag -> Packets )' => {
                                                 '0' => '13378773318',
                                                 '6' => 1192965355,
                                                 '5' => 241414642,
                                                 '7' => 93307502,
                                                 '3' => 32812572,
                                                 '1' => 705042,
                                                 '4' => 5812
                                               },
          'cos:outgoing ( Tag -> Packets )' => {
                                                 '0' => '18309565892',
                                                 '6' => 4725226136,
                                                 '7' => 2016871236,
                                                 '5' => 1937646890,
                                                 '3' => 423068898,
                                                 '2' => 41422754,
                                                 '1' => 11665393,
                                                 '4' => 567635
                                               },
          'dscp:incoming ( Tag -> Packets )' => {
                                                  '0' => '11778685571',
                                                  '46' => 2184094729,
                                                  '26' => 394305418,
                                                  '40' => 131328936,
                                                  '48' => 84660939,
                                                  '18' => 42501678,
                                                  '24' => 32812572,
                                                  '12' => 8553900,
                                                  '56' => 6240271,
                                                  '10' => 3500510,
                                                  '44' => 502413,
                                                  '34' => 463741,
                                                  '4' => 247044,
                                                  '52' => 113496,
                                                  '32' => 103896,
                                                  '28' => 29765,
                                                  '53' => 11408,
                                                  '20' => 243,
                                                  '49' => 152,
                                                  '54' => 7,
                                                  '2' => 6,
                                                  '50' => 3
                                                },
          'dscp:outgoing ( Tag -> Packets )' => {
                                                  '0' => '16977173711',
                                                  '48' => 4360459601,
                                                  '46' => 1862171624,
                                                  '26' => 390223766,
                                                  '40' => 75123620,
                                                  '18' => 41422531,
                                                  '24' => 32812591,
                                                  '56' => 9411197,
                                                  '12' => 8258740,
                                                  '10' => 3406653,
                                                  '52' => 491103,
                                                  '34' => 463739,
                                                  '44' => 351642,
                                                  '4' => 228762,
                                                  '32' => 103896,
                                                  '53' => 47290,
                                                  '28' => 32541,
                                                  '20' => 223,
                                                  '49' => 152,
                                                  '54' => 7,
                                                  '2' => 6,
                                                  '50' => 3
                                                },
          'output queues:dropped (queue - threshold)' => {
                                                           '3-3' => 
23391191,
                                                           '2-2' => 
8571412,
                                                           '2-1' => 
1729737,
                                                           '4-3' => 103134,
                                                           '2-3' => 1948,
                                                           '3-1' => 45
                                                         },
          'output queues:enqueued (queue - threshold)' => {
                                                            '3-3' => 
'14238358295',
                                                            '2-3' => 
7146794945,
                                                            '4-3' => 
3298145116,
                                                            '1-3' => 
1862349561,
                                                            '2-2' => 
1078365695,
                                                            '2-1' => 
230568942,
                                                            '1-1' => 
75476596,
                                                            '4-1' => 
541520,
                                                            '3-1' => 32559
                                                          }

Processed 260 interfaces