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INE LAB 10.51 workbook 1

Going through this lab mapping the cos 1-4 , 6-7 to queue 2 doesn't match the output in the verification setting when logging at the dscp-input-q

this is from the INE workbook.

Rack1SW2#show mls qos maps dscp-input-q
Dscp-inputq-threshold map:
d1 :d2 0 1 2 3 4 5 6 7 8 9
------------------------------------------------------------
0 : 02-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 02-01 01-01
1 : 01-01 01-01 01-01 01-01 01-01 01-01 02-01 01-01 01-01 01-01
2 : 01-01 01-01 01-01 01-01 02-01 01-01 01-01 01-01 01-01 01-01
3 : 01-01 01-01 02-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01
4 : 01-01 02-01 02-01 02-01 02-01 02-01 02-01 02-01 02-01 01-01
5 : 01-01 01-01 01-01 01-01 01-01 01-01 02-01 01-01 01-01 01-01
6 : 01-01 01-01 01-01 01-01

Below is from my own person lab rack.

Rack1SW1#show mls qos maps cos-input-q
   Cos-inputq-threshold map:
              cos:  0   1   2   3   4   5   6   7 
              ------------------------------------
  queue-threshold: 2-1 2-1 2-1 2-1 2-1 1-1 2-2 2-2


Rack1SW1#show mls qos maps dscp-input-q
   Dscp-inputq-threshold map:
     d1 :d2    0     1     2     3     4     5     6     7     8     9
     ------------------------------------------------------------
      0 :    01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01
      1 :    01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01
      2 :    01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01
      3 :    01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01
      4 :    02-01 02-01 02-01 02-01 02-01 02-01 02-01 02-01 01-01 01-01
      5 :    01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01 01-01
      6 :    01-01 01-01 01-01 01-01

here my config

mls qos srr-queue input bandwidth 10 30
mls qos srr-queue input
priority-queue 1 bandwidth 15
mls qos srr-queue input cos-map queue 1
threshold 1 5
mls qos srr-queue input cos-map queue 2 threshold 1 1 2 3 4 6 7

the below out is correct, but again it doens't match what it is in the book. Is the book in error?

Rack1SW1# show mls qos maps cos-input-q
   Cos-inputq-threshold map:
              cos:  0   1   2   3   4   5   6   7 
              ------------------------------------
  queue-threshold: 2-1 2-1 2-1 2-1 2-1 1-1 2-2 2-2

book says dscp 48 and 56 which maps to cos 6 7 should be mapped to queue 2 but the output in my rack doesn't show that. Anyone else experience this?

 

 

Comments

  • Rack1SW1# show mls qos maps cos-input-q
       Cos-inputq-threshold map:
                  cos:  0   1   2   3   4   5   6   7 
                  ------------------------------------
      queue-threshold: 2-1 2-1 2-1 2-1 2-1 1-1 2-2 2-2

    book says dscp 48 and 56 which maps to cos 6 7 should be mapped to queue 2 but the output in my rack doesn't show that. Anyone else experience this?
     

     

    In MLS, there are some default configurations and it may not be seen in the output. I think 6 7 are reserved for the control plane traffic and it already defaults to the heighest queue, i.e. 2. ( Correct me if i'm wrong). 

    Also make sure that the INE lab an your home lab have same IOS Version. If these are samme & you are not getting the right output, please let us know.

    HTH

  • Been overlooking a lot of stuff in the qos section but I want to say something about this one.

     

    • Map all packets marked with CoS values of 5 to the priority queue.
    • Ensure that all other packets map to the non-priority queue.

     

    SG: 

    mls qos srr-queue input cos-map queue 1 5
    <span class="annotator-hl annotator-hl-temporary">mls qos srr-queue input </span>cos-map queue 2 1 2 3 4 6 7
    </blockquote>
    <br />

    Verification:


    Rack3SW1#sh mls qos maps cos-input-q
    Cos-inputq-threshold map:
    cos: 0 1 2 3 4 5 6 7
    ------------------------------------
    queue-threshold: 1-1 2-1 2-1 2-1 2-1 1-1 2-1 2-1
    
    
    
    
    
    
    Do you see it?
    
    
    
    
    COS 0 packets are being placed into the priority queue, violates the requirement.
    
    
    
    
    
    
    should be: 
    
    

    mls qos srr-queue input cos-map queue 2 0 1 2 3 4 6 7
    
    
    
    
    
    
    
    
    Verification:

    Cos-inputq-threshold map:
    cos: 0 1 2 3 4 5 6 7
    ------------------------------------
    queue-threshold: 2-1 2-1 2-1 2-1 2-1 1-1 2-1 2-1
    
    
    
    
    
    
    I know this whole section is going away soon, just felt like getting that off my chest is all.
    
    
    Ok, back to the rack. 
    
    
    
    
    -h
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