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New Member

mls qos

Hi Expert,

Any one can explain me what this is means? this is show using show running config.  thanks

 

Regards,

 

mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue input bandwidth 90 10
mls qos srr-queue input threshold 1 8 16
mls qos srr-queue input threshold 2 34 66
mls qos srr-queue input buffers 67 33
mls qos srr-queue input cos-map queue 1 threshold 2 1
mls qos srr-queue input cos-map queue 1 threshold 3 0
mls qos srr-queue input cos-map queue 2 threshold 1 2
mls qos srr-queue input cos-map queue 2 threshold 2 4 6 7
mls qos srr-queue input cos-map queue 2 threshold 3 3 5
mls qos srr-queue input dscp-map queue 1 threshold 2 9 10 11 12 13 14 15
mls qos srr-queue input dscp-map queue 1 threshold 3 0 1 2 3 4 5 6 7
mls qos srr-queue input dscp-map queue 1 threshold 3 32
mls qos srr-queue input dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23
mls qos srr-queue input dscp-map queue 2 threshold 2 33 34 35 36 37 38 39 48
mls qos srr-queue input dscp-map queue 2 threshold 2 49 50 51 52 53 54 55 56
mls qos srr-queue input dscp-map queue 2 threshold 2 57 58 59 60 61 62 63
mls qos srr-queue input dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31
mls qos srr-queue input dscp-map queue 2 threshold 3 40 41 42 43 44 45 46 47
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 2 4
mls qos srr-queue output cos-map queue 4 threshold 2 1
mls qos srr-queue output cos-map queue 4 threshold 3 0
mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45 46 47
mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29 30 31
mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55
mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63
mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37 38 39
mls qos srr-queue output dscp-map queue 4 threshold 1 8
mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15
mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7
mls qos queue-set output 1 threshold 1 138 138 92 138
mls qos queue-set output 1 threshold 2 138 138 92 400
mls qos queue-set output 1 threshold 3 36 77 100 318
mls qos queue-set output 1 threshold 4 20 50 67 400
mls qos queue-set output 2 threshold 1 149 149 100 149
mls qos queue-set output 2 threshold 2 118 118 100 235
mls qos queue-set output 2 threshold 3 41 68 100 272
mls qos queue-set output 2 threshold 4 42 72 100 242
mls qos queue-set output 1 buffers 10 10 26 54
mls qos queue-set output 2 buffers 16 6 17 61

 

crypto pki certificate chain TP-self-signed-675850496
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  4D4597CB 7AAC295E B41091DC 26D6F663 03912E56 DA33FED4 0AF6BF52 2BB530DD
  02030100 01A36930 67300F06 03551D13 0101FF04 05300301 01FF3014 0603551D
  11040D30 0B820953 57526F75 7465722E 301F0603 551D2304 18301680 14CC50DB
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  0C2C287E FCDDDCB9 41FF5106 ADBF084F 834CA88E EF5B37DD 7D1A924E 8D595474 D80D9D
  quit

 

3 REPLIES
Cisco Employee

It seems your device is

It seems your device is configured for QoS (Quality Of Service).  QoS is disabled usually by default. While QoS is disabled, all frames/packets are passed-through the switch unaltered. For example, if a frame with CoS 5 and the packet inside the frame with DSCP EF enters the switch, the CoS and DSCP labels are not changed. The traffic leaves with the same CoS and DSCP values as it enters. All the traffic, which includes voice, are delivered on the best effort basis.

Typically, networks operate on a best-effort delivery basis, which means that all traffic has equal priority and an equal chance of being delivered in a timely manner. When congestion occurs, all traffic has an equal chance of being dropped.

When you configure the QoS feature, you can select specific network traffic, prioritize it according to its relative importance, and use congestion-management and congestion-avoidance techniques to provide preferential treatment. Implementing QoS in your network makes network performance more predictable and bandwidth utilization more effective.

For more details, you should check on Configuration Guide for IOS/Platform you're using. This existing thread would also be helpful for you.

-Thanks

Vinod

-Thanks Vinod **Rating Encourages contributors, and its really free. **
New Member

thank you sir. when i

thank you sir. when i purchased the switch i never configure the QoS but its enabled. and i experienced dropping connection one my client computer. i'm using ubnt wireless bridge between two site and i suspected that some incompatible issue between ubnt and cisco switches. do i need to disable QoS since i do not use voice telephony?

Thank you.

Cisco Employee

It may be an issue when you

It may be an issue when you don't understand what is configured and which Traffic is being prioritised on the switch. You try disabling this from the switch.

To disable the QoS functionality globally, use the no mls qos command.

I would also suggest to take a backup of your configuration before making any changes.

-Thanks

Vinod

-Thanks Vinod **Rating Encourages contributors, and its really free. **
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