09-05-2006 01:06 AM - edited 03-13-2019 02:51 PM
Hi All,
Sorry if this is posted in the wrong place but can anyone shed any light on the meaning of the five columns given in the output for the following command on a 3750 ?
Show Mls Qos Interface <interface id> Statistics
Many Thanks
Shaun
09-05-2006 08:15 AM
it tells you how many packets for each DSCP and COS class inbound as well as outbound. It is especially good for troubleshooting.
09-05-2006 09:42 AM
i have problem interpreting it as well in the beginning.
If u look at it carefully, at the left most column, it has some thing like..
0-4 a b c d e
5-9
etc..
the value of
a = counter for packets with dscp=0
b = counter for packets with dscp=1
..
e = counter for packets with dscp =4
the same thing applies..
rate this post if it helps..
09-06-2006 12:30 AM
Thanks Guys,
I can see that it counts the number of ingress and egress packets for each DSCP and COS value, but what does each column mean ?
In the output they are untitled, so i have no idea if, for example, the first four relate to queues ? or not. I would imagine that drops would be in there somewhere, but in its 'show' output state, and without a knowledge of the meaning of the columns this output is next to useless. I cant find anything on Cisco web site either, the information is just too general.
Idealy what i am hoping for is to findout that column 1 shows X, column 2 shows Y and so on.
Many thanks for any further help.
Cheers
Shaun
12-18-2011 01:50 AM
I think that this is my first post, so I hope it will be useful ;-)
It's indeed very strange, I faced the same problem before, so I tried to check older switches, and I was able to find what these values are, for example, if You check the link :
Understanding QoS Policing and Marking on the Catalyst 3550
http://www.cisco.com/en/US/products/hw/switches/ps646/products_tech_note09186a00800feff5.shtml
You will find that these five fields mean:
incoming no_change classified policed dropped (in pkts)
This is a description of the fields in the example:
Incoming—shows how many packets arrive from each direction
NO_change—shows how many packets were trusted (such as QoS level not changed)
Classified—shows how many packets have been assigned this internal DSCP after classification
Policed—shows how many packets were marked down by policing; DSCP shown before markdown.
Dropped—shows how many packets were dropped by policing
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