C2960XR to C9200L MLS Configuration

[tweep9141983]

Hello,

Not a QoS expert here but I am really trying to study and understand at the moment.  We have added a new C9200L to our office and I am stuck with configuring the MLS part..

Below is the existing config in the C2960XR

!

mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 4 5
mls qos srr-queue output cos-map queue 2 threshold 1 2
mls qos srr-queue output cos-map queue 2 threshold 2 3
mls qos srr-queue output cos-map queue 2 threshold 3 6 7
mls qos srr-queue output cos-map queue 3 threshold 3 0
mls qos srr-queue output cos-map queue 4 threshold 3 1
mls qos srr-queue output dscp-map queue 1 threshold 3 32 33 40 41 42 43 44 45
mls qos srr-queue output dscp-map queue 1 threshold 3 46 47
mls qos srr-queue output dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23
mls qos srr-queue output dscp-map queue 2 threshold 1 26 27 28 29 30 31 34 35
mls qos srr-queue output dscp-map queue 2 threshold 1 36 37 38 39
mls qos srr-queue output dscp-map queue 2 threshold 2 24
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 0 1 2 3 4 5 6 7
mls qos srr-queue output dscp-map queue 4 threshold 1 8 9 11 13 15
mls qos srr-queue output dscp-map queue 4 threshold 2 10 12 14
mls qos queue-set output 1 threshold 1 100 100 50 200
mls qos queue-set output 1 threshold 2 125 125 100 400
mls qos queue-set output 1 threshold 3 100 100 100 400
mls qos queue-set output 1 threshold 4 60 150 50 200
mls qos queue-set output 1 buffers 15 25 40 20
mls qos
!
*****sample interface*****
!
interface GigabitEthernet1/0/3
switchport access vlan 200
switchport mode access
switchport voice vlan 201
srr-queue bandwidth share 1 30 35 5
queue-set 2
priority-queue out
mls qos trust dscp
no cdp enable
spanning-tree portfast
!

And I just want it to convert to be used in our new C9200L.  I've read a couple of articles including this one.. https://edennington.wordpress.com/2013/08/09/simplified-qos-on-3850-with-mqc/

However, I am still stuck at the moment.

I am hoping someone also had this experience and would be kind enough to share how they were able to convert this MLS to the new MQC in C9200L.

Atb,

Stressed Helpdesk

[balaji.bandi]

have you used cisco converter :

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3850-series-switches/118629-technote-qos-00.html

what is the issue after deploying in to Cat 9200 ?

[Mark Malone · Accepted solution]

Your using standard MLS there so just use standard Auto Qos on the 9200

i have it deployed it works fine , run this under your access and uplink ports

auto qos trust dscp

It will then generate this in global config , which covers most standards , you could then if you wanted alter it too

class-map match-any AutoQos-4.0-Output-Multimedia-Conf-Queue
match dscp af41 af42 af43
match cos 4
class-map match-any system-cpp-police-topology-control
description Topology control
class-map match-any system-cpp-police-sw-forward
description Sw forwarding, L2 LVX data, LOGGING
class-map match-any AutoQos-4.0-Output-Bulk-Data-Queue
match dscp af11 af12 af13
match cos 1
class-map match-any system-cpp-default
description DHCP Snooping, EWLC control, EWCL data
class-map match-any system-cpp-police-sys-data
description Learning cache ovfl, Crypto Control, Exception, EGR Exception, NFL SAMPLED DATA, RPF Failed
class-map match-any AutoQos-4.0-Output-Priority-Queue
match dscp cs4 cs5 ef
match cos 5
class-map match-any system-cpp-police-punt-webauth
description Punt Webauth
class-map match-any AutoQos-4.0-Output-Multimedia-Strm-Queue
match dscp af31 af32 af33
class-map match-any system-cpp-police-l2lvx-control
description L2 LVX control packets
class-map match-any system-cpp-police-forus
description Forus Address resolution and Forus traffic
class-map match-any system-cpp-police-multicast-end-station
description MCAST END STATION
class-map match-any system-cpp-police-multicast
description Transit Traffic and MCAST Data
class-map match-any system-cpp-police-l2-control
description L2 control
class-map match-any system-cpp-police-dot1x-auth
description DOT1X Auth
class-map match-any system-cpp-police-data
description ICMP redirect, ICMP_GEN and BROADCAST
class-map match-any system-cpp-police-stackwise-virt-control
description Stackwise Virtual
class-map match-any system-cpp-police-control-low-priority
description General punt
class-map match-any non-client-nrt-class
class-map match-any system-cpp-police-routing-control
description Routing control
class-map match-any system-cpp-police-protocol-snooping
description Protocol snooping
class-map match-any AutoQos-4.0-Output-Trans-Data-Queue
match dscp af21 af22 af23
match cos 2
class-map match-any system-cpp-police-dhcp-snooping
description DHCP snooping
class-map match-any system-cpp-police-system-critical
description System Critical and Gold
class-map match-any AutoQos-4.0-Output-Scavenger-Queue
match dscp cs1
class-map match-any AutoQos-4.0-Output-Control-Mgmt-Queue
match dscp cs2 cs3 cs6 cs7
match cos 3
!
policy-map AutoQos-4.0-Output-Policy
class AutoQos-4.0-Output-Priority-Queue
priority level 1 percent 30
class AutoQos-4.0-Output-Control-Mgmt-Queue
bandwidth remaining percent 10
queue-limit dscp cs2 percent 80
queue-limit dscp cs3 percent 90
queue-limit dscp cs6 percent 100
queue-limit dscp cs7 percent 100
queue-buffers ratio 10
class AutoQos-4.0-Output-Multimedia-Conf-Queue
bandwidth remaining percent 10
queue-buffers ratio 10
class AutoQos-4.0-Output-Trans-Data-Queue
bandwidth remaining percent 10
queue-buffers ratio 10
class AutoQos-4.0-Output-Bulk-Data-Queue
bandwidth remaining percent 4
queue-buffers ratio 10
class AutoQos-4.0-Output-Scavenger-Queue
bandwidth remaining percent 1
queue-buffers ratio 10
class AutoQos-4.0-Output-Multimedia-Strm-Queue
bandwidth remaining percent 10
queue-buffers ratio 10
class class-default
bandwidth remaining percent 25
queue-buffers ratio 25
policy-map system-cpp-policy
class system-cpp-police-control-low-priority
class system-cpp-police-dhcp-snooping
policy-map AutoQos-4.0-Trust-Dscp-Input-Policy
class class-default
set dscp dscp table AutoQos-4.0-Trust-Dscp-Table
!
!

[tweep9141983]

Thanks so much for this @Mark Malone .. now at least I'm relieved, I thought the previous IT admin made some advanced QoS stuff to the switches.

So basically.. the below sample interface on the C2960XR below..

!
interface GigabitEthernet1/0/3
switchport access vlan 200
switchport mode access
switchport voice vlan 201
srr-queue bandwidth share 1 30 35 5
queue-set 2
priority-queue out
mls qos trust dscp
no cdp enable
spanning-tree portfast
!

Will now be equivalent to the below in the new C9200L switches..

!
interface GigabitEthernet4/0/1
switchport access vlan 230
switchport mode access
switchport voice vlan 231
no cdp enable
auto qos trust dscp
spanning-tree portfast
service-policy input AutoQos-4.0-Trust-Dscp-Input-Policy
service-policy output AutoQos-4.0-Output-Policy
!

The service-policy lines automatically showed-up..

Again thanks so much for your quick response to this..

[Mark Malone]

thats it you got it , you can easily test it on wireshark to make sure your phones get EF markings etc , but auto qos tends to work well at layer 2 level

[tweep9141983]

I've tried to read this topic last night however still having problems understanding as I don't have much experience with QoS.. I think I can get it done, but would take me at least a week to read, understand and test for application.

No issues yet, I have not configured the C9200L switches yet.

Thanks so much for your update @balaji.bandi 

[balaji.bandi]

You should be ok, any issue we can tweak the config required manner.