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New Member

3850 Switch - QOS

HI

 

We've just purchased 3850 switch part of a wireless upgrade, but we are usign 8500 wlc.

Want to use the 3580 just as a edge switch without the wlc as we didn't purchase the licences.

Using our exsiting 3750x template haing issues with the QOS settings

 

mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue input cos-map queue 2 threshold 1 3
mls qos srr-queue input dscp-map queue 2 threshold 1 24
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 1 2
mls qos srr-queue output cos-map queue 2 threshold 3 3
mls qos srr-queue output cos-map queue 3 threshold 1 1
mls qos srr-queue output cos-map queue 3 threshold 3 0
mls qos srr-queue output cos-map queue 4 threshold 3 6 7
mls qos queue-set output 2 threshold 2 3200 3200 100 3200
mls qos queue-set output 2 buffers 10 70 10 10
mls qos

any help would be apprieicated in pointing to right direction.

Have been looking for last couple of days.

 

cheers

 

Everyone's tags (1)
4 REPLIES
New Member

The settings in the 3650 and

The settings in the 3650 and 3850 follow the XE QoS design. If you do a quick search, you'll see that they now use the MQC framework.

Hithis might help (as we

Hi

this might help (as we moved from 3750 to 3850 switches, we had to rebuild qos).

 

The basic idea is something like this

Class-maps:

class-map match-any CM_VOIP

match dscp ef

class-map match-any CM_SIGNALING

match ip dscp cs3

match ip dscp af31

class-map match-any VC_VIDEO

match dscp af41

 

Policy map for the uplink:

policy-map UPLINK-OUT

class CM_VOIP

priority level 1 percent 10 (this is the high priority queue)

police cir percent 10 conform-action transmit exceed-action drop

class CM_SIGNALING

priority level 2 percent 5 (low priority queue)

police cir percent 5 conform-action transmit exceed-action drop

class VC_VIDEO

bandwidth remaining percent 10

class class-default

bandwidth remaining percent 75

Uplink config:

Interface Gi1/1/1

Service-policy output UPLINK-OUT

This way you can build your qos policies. You can tune anyway you like / configure more traffic types and/or confighure policies for access ports

 

New Member

HIthanks for this, did you

HI

thanks for this, did you have to do any changes on your distribution to get this to work?

What would be interesting if I could see your original QOS so I could better understand it, if that is OK?

 

cheers

Hi, 1. no, we have a

Hi,

 

1. no, we have a collapsed core, 6509 switches. For us no need to change anything there as far as qos is concerned compared to the 3750 config.

2. i do not have any backups of the old configs anymore. All gone. Sorry bout that.

But if you need any help with this let me know.

 

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