MQC QoS - C3650 - DSCP Trust

Hi,
We are migrating from 3750's to 3650's and I need to move the QoS over. In my policy map I would normally trust DSCP, but on the 3650's, there doesnt seem to be a trust DSCP command. Below is my policy map config:
policy-map vvc-map
class voice
trust dscp
class video
trust dscp
class control
trust dscp
class control-VoIP
trust dscp
Does anyone have any ideas on what has replaced the trust DSCP command in the policy map or is there a different way of doing it now?
Thanks,
Mark

Hi Mark
In IOS XE (3650/3850) no trust dscp option on policy map config.
Here is a doc on how trust works on those switches.
http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/qoscampuscat3x50aag.html#wp1052949
HTH
Regards
Carlo

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QoS - can u trust dscp and cos?

Hello,
is it possible to trust DSCP and COS at the same time?
If so, which one wins?

G'day,
It does not really make sense to trust both DSCP and CoS at the same time. You configure your switch to trust one or none of these.
As an example, if you did have the capability to trust both DSCP and CoS, imagine what would happen if you received a frame with DSCP EF and CoS 0 ? You would be faced with a conflicting situation ... if you trusted CoS, you would give a potentially high-priority packet lesser service. Whereas if you trusted DSCP, you could end up giving a potentially low-priority packet voice-like service... So the option of trusting both is not allowed.
Hope that helps - pls rate the post if it does.
Paresh

Nexus 5020/2248: Best Practice for DSCP-trust, verses DSCP-don't trust

We have several Nexus 5020/2248's for our server access to the network (approximately 1000 ports). On about 20 of these ports we want to trust the DSCP markings, since they are from out Cisco Unified Comm appliances (these are access ports). However, on all other ports (mostly access, so DSCP, but ~ 100 trunks so some are COS also) we want to "not trust" or essentially zero out any non-zero DSCP value.
Does anyone have suggestions on easiest/best method for setting the trust boundaries for Nexus 5020/2248s?
Note: vers 5.0(3) NS(1)
Thanks!
Mike.

Hi
Before any other think I would like you to upgrade your WLC image to 7.6.130.0 & FUS to 1.9.0.0. FUS upgrade will require 30-40min downtime to your wireless.
http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/fus_rn_OL-31390-01.html
http://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn76mr03.html
It tells me to disable 802.11a and 802.11b. If I go into each radio on 'Network' tab and disable these - NOTHING can connect to any SSID. So unless I've misunderstood something - this is a contradiction in the best-practice link I posted above,
This simply says, you have to disable radio band before changing QoS profile values. Once you change those value you can re-enable the radio band. :)
If I enable FT-PSK and PSK - for devices that support FT-PSK (which i'm under the impression is 802.11r) will these devices use that and for devices that don't they'll use 'regular' PSK? How do I know if my client is connecting using PSK or FT-PSK as both are enabled on the same WLAN.
Read these 802.11r post & you will understand how 802.11r works. There are certain client devices does not like PSK & FT-PSK capability advertise on the same SSID & may have connectivity issues. But most of the clients like iPhone, iPads,etc will connect without any problems.
http://mrncciew.com/2014/09/06/cwsp-802-11r-ft-association/
http://mrncciew.com/2014/09/07/cwsp-802-11r-over-the-air-ft/
http://mrncciew.com/2014/09/08/cwsp-802-11r-over-the-ds-ft/
"show client detail <mac_address>" should indicate if client connected over FT-PSK or PSK.
HTH
Rasika
**** Pls rate all useful responses ****

Question about 3750 mls qos map dscp-output-q and cos-output-q

1. If a egress packet has both Cos and Dscp setting, which map should this packet used to put into queue?
2. The 3750 is doing ip route. After the packet is routed, will the packet keep the DSCP and COS? Or it will just keep the DSCP and using the dscp-cos map to create a new COS.

Apologies for the confusion with the terminalogy.
The question is where you have configured the trust boundaries, do you necessarily trust the DSCP value prior to being routed across your network?
Therefore, although you have explicity trusted the DSCP value, do you still trust the value at the remote peer.
For example, you connect into an MPLS with QoS enabled, you know that the values you are trusting are correct within your network, however at the remote peer/branch they could be remarked by the provider. Therefore do you 'believe' the values, or do you simply not trust them and then reclassify on ingress.
Regards
Allan.
Hope this makes sense..

QoS - Why DSCP AF-41 for Video

Guys,
I wanted to ask the forum one question why DSCP AF-41 marking is used for Video. I know Cisco designed and recommedded it in that way, but is there any other technical reason behind it?
Cheers,
Sugata

Hi Sugata,
Firstly as you may know already, traffic marking are done to classify traffic into different classes according to the priority so that they are meted with a different behaviour. It ensures smaller and critical traffic does not get stuck behind bulkier traffic which may not need priority.
Among the real time traffic, audio is the most critical. The Cisco recommended markings are according to the priority of the traffic type. Voice has a higher priority than video. Video is further separated into two categories - Interactive (Video conferencing etc.) and Streaming (playing a unicast or multicast video). The order of priority and reason for that is below:
1) Audio - Voice traffic is very sensitive to packet loss, latency. It requires no packet loss and latency of about 150 ms.
2) Interactive Video - Sensitive but can tolerate packet loss of about 1% and latency almost same as voice
3) Streaming Video - Less sensitive - can tolerate about 4-5% packet loss and latency of about 4-5 seconds
So it’s a general guideline\standard from Cisco to mark voice with a dscp 46 or ef, Interactive video 34 or af41, Streaming video as dscp 32 or cs4. Since this is Cisco recommended best practise, Cisco's most UC apps by default mark the traffic like this.
You can change it but strongly not advised unless you have a very good reason. Another reason not to change is some of the auto templates etc. you can normally use at access level catalyst switches use these markings, which otherwise you will have to manually change the mappings etc.
Hope this clarifies - if you have any further questions please feel free to ask.
Terry

Why does mls qos trust dscp dissapear after reboot?

The command takes but after reboot, Invlaid inputs detected show up and "mls qos tust dscp" is gone from every interface.
Happens on both 2960-24PC-S / 2960-48PST-S switches.

Hi,
thanks for your reply.
mls qos
interface GigabitEthernet3/34
description *** DATA VLAN 35 - VOICE VLAN 34 ***
switchport
switchport trunk native vlan 36
switchport trunk allowed vlan 34,36
switchport mode trunk
mls qos trust dscp
no cdp enable
spanning-tree portfast trunk
If i don't include the global 'mls qos' command then the voice packets keep the dscp 46 value. If I add the mls qos command this causes the switch to set the dscp values to zero.
Thanks again
ps. there are some other mls commands on the switch... i don't know if these could interfere but they were already on there so i'm reluctant to remove them..

QoS Problem ( nt getting same DSCP marking at diff.. vpls customer sites

Hi we are having 3 locations A , B & C
we are providing l2 vpls service to customer .
customer is connected to our mpls cloud via EoSDH on my mpls switch on locations A , B & C.
customer is marking his traffic with DSCP bit XX from Location A when customer checking the traffic
at location B via packet sniffer ethereal they are not getting the same DSCP Tagging .
can anyone help me to find out the possible cause of this .
As far as i know in VPLS services there is limitation of provide multi-QoS.
But here in this case i m only trusting DSCP on the Lastmile port as well as on the trunks connected from my switches to my PEs .
so customer tagging should reach from location A to Location B .
Here we go:
CPE-A------CPE-A-SW--------SP-SW-A----PE-A======MPLS CLOUD=====PE-B------SP-SW-B-------CPE-B-SW-------CPE-B
here :CPE-A = customer router
CPE-A-SW = 4500
SP-SW-A = 4500
PE-A = 7600
PE-B = 7600
SP-SW-B = 3500
CPE-B-SW = 4500
CPE-B = customer router

I m getting blew output on the trunk interface connected to my PE on both the switches.
SP-SW-A#sh qos interface GigabitEthernet4/3
QoS is enabled globally
Port QoS is enabled
Administrative Port Trust State: 'dscp'
Operational Port Trust State: 'dscp'
Trust device: none
Default DSCP: 0 Default CoS: 0
Appliance trust: none
Tx-Queue Bandwidth ShapeRate Priority QueueSize
(bps) (bps) (packets)
1 250000000 disabled N/A 2336
2 250000000 disabled N/A 2336
3 250000000 disabled normal 2336
4 250000000 disabled N/A 2336
SP-SW-B#sh mls qos interface GigabitEthernet0/2 statistics
GigabitEthernet0/2
Ingress
dscp: incoming no_change classified policed dropped (in bytes)
Others: 0 0 0 0 0
Egress
dscp: incoming no_change classified policed dropped (in bytes)
Others: 0 n/a n/a 0 0
WRED drop counts:
qid thresh1 thresh2 FreeQ
1 : 0 0 1024
2 : 0 0 1024
3 : 0 0 1024
4 : 0 0 1024

MPLS QoS - SUP720BXL GE Port not supporting Strict Priority & Priority %

Hi Sir,
My customer have few C7609s with SUP720 3BXL and running IOS image s72033-advipservicesk9_wan-mz.122-18.SXF6.bin within the MPLS network.
What I experienced is that I can't configured the built-in GE port of the SUP720 for Strict Priority & Priority Percent QoS.
Is there anyone outside there know what is the equivalent or alternative to above mentioned two QoS features ? This is mainly to priortize the voice traffic.
Thanks in advance.
Ray.

The below has been recommended for a customer using 7600 in the
Core with GiGs as normal core facing links.
The implementation goes as below:
i) Enabling the MLS on the 7600 chassis.
mls qos
ii) Configuring Trust Boundary on all Interfaces.
interface GigabitEthernet1/1
mls qos trust
<--By default the Trust Command trusts the incoming DSCP/TOS.
When the ports are configured with the Trust Boundary as given above,
all incoming packets are mapped into Initial Internal DSCP values.
These values are used purely as a reference MAP for Internal QOS
processing on the 7600.
Internal DSCP Output COS
DSCP 0 7 COS 0
DSCP 8 15 COS 1
DSCP 16 23 COS 2
DSCP 24 31 COS 3
DSCP 32 39 COS 4
DSCP 40 47 COS 5
DSCP 48 55 COS 6
DSCP 56 63 COS 7
This deafault mapping can be modified by modifying the DSCP-COS MAP
within the MLS QOS. The the default mapping are as per standards,
and hence it is not recommended to change the mapping.
iii) Directing Traffic into the appropriate Egress Queue.
Once the incoming traffic is mapped to the Initial Internal DSCP,
and the same gets mapped to the Output COS, these values need to
be directed to the appropriate Queues for the desired QOS behavior
on the MPLS EXP packets.
interface x/x
wrr-queue cos-map
priority-queue cos-map
For Eg:
interface gigabitethernet 1/10
wrr-queue cos-map 2 threshold 2 0
wrr-queue cos-map 3 threshold 2 1 2
wrr-queue cos-map 4 threshold 2 3 4
priority-queue cos-map 1 5 6 7
iv) Defining Queue Bandwidth Limits.
After directing the COS to appropriate queues and then assigning them
to appropriate drop threshold values, it is required to define the
bandwidth allocation per queue. This can be done as below.
!<-- To Set minimum assured bandwidth to COS Queue 1,2 & 3
Use the Bandwdith Percentage command as below.
interface GigabitEthernet 1/1
wrr-queue bandwidth percent !
<--Total of Queue Weights should be =100%
To evenly distribute the available bandwidth during congestion for
all the 4 queues, it is required to set the Queue Scheduling Weights
between all the four Queues. This is done by assigning the queues
weights which are used during WRR scheduling.
!<--Set the Queue-Limit Weights of WRR Scheduling as below
interface GigabitEthernet 1/1
wrr-queue queue-limit
priority-queue queue-limit xx
!<--For Example:
interface GigabitEthernet 1/1
wrr-queue queue-limit 25 20 22
priority-queue queue-limit 33
!<-- The example above does a Queue scheduling for Queue 1 for 25% of BW,
Queue 2 for 20% and Queue 3 for 22 % and Priority Queue has 33 %.
To conclude if you want to use the conventional MQC based toggles,
you will need to use FlexWans with WAN ports or OSM's. Where you can
apply the conventional MQC based toggles.
FOr all the LAN ports in 7600 only hardware queues are supported which
can be controlled using MLS, the difference between SUP and Module based
LAN ports is withing the Scheduling alogirthms supported, the Egress and Ingress
buffers, and the number of queues and drop thresholds available.
For Reference use this link:
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/software/122sr/swcg/qos.htm
HTH-Cheers,
Swaroop
PS:
Policy Map Class Command Restrictions
PFC QoS does not support these policy map class commands:
?bandwidth
?priority
?queue-limit
?random-detect
?set qos-group
?service-policy

Set default dscp on ingress, while doing policer markdown

I'm using C3850, and want to set dscp AF21 for the first 100 mbps of input traffic on a L3 port ("no switchport"), and set AF11 for the remainder (any traffic >100mbps). I am not trusting DSCP of ingress packets, but generally they are dscp 0.
I see that I can use a 2-color policer, with "conform action transmit" and "exceed action set dscp table my-markdown". Within that table, it looks like I can rewrite all matching traffic (>100mbps) to AF11 ("default 10", or "from 0 to 10").
But I'm not sure how to set DSCP for the "conforming" traffic.

can "set qos-group" be used for this?
table-map set-af21
default 18
table-map set-af11
default 10
policy-map myMap
class class-default
police 100m exceed-action set-dscp-transmit dscp table set-af11
set qos-group dscp table set-af21
interface gi1/0/1
service-policy input myMap
...would that first set all traffic received using table set-af21, then let the policer markdown traffic out of profile (>100mbps) to AF11?

Convert Qos commands from CATOS to IOS

Hello,
i've some problems converting some Qos commands from CATos to IOS can anybody help me?
set qos drop-threshold 1q4t rx queue 1 50 60 80 100
set qos map 2q2t tx 1 1 cos 0
set qos map 1p1q4t rx 1 3 cos 4
set qos wrr 1p2q2t 50 255
set qos txq-ratio 1p2q2t 70 15 15
set qos wred 1p2q2t tx queue 1 70:100 70:100
set qos bridged-microflow-policing disable 1,50-54,100-121,500,700-702,1006-1011,1016
set qos policed-dscp-map 1:1
set qos policed-dscp-map excess-rate 0:0
set qos acl default-action ip dscp 0
set qos acl default-action ipx
set qos acl default-action mac
set qos policy-source local
set qos rsvp disable
set qos rsvp policy-timeout 30
set qos rsvp local-policy forward
!Module with GE interfaces
set port qos 3/1-16 cos 0
set port qos 3/1-16 trust trust-cos
set port qos 3/1-16 port-based
set port qos 3/1-16 policy-source local
set qos statistics export port 3/1 disable
set qos statistics export port 3/2 disable
set qos statistics export port 3/3 disable
set qos statistics export port 3/4 disable
set qos statistics export port 3/5 disable
set qos statistics export port 3/6 disable
set qos statistics export port 3/7 disable
set qos statistics export port 3/8 disable
set qos statistics export port 3/9 disable
set qos statistics export port 3/10 disable
set qos statistics export port 3/11 disable
set qos statistics export port 3/12 disable
set qos statistics export port 3/13 disable
set qos statistics export port 3/14 disable
set qos statistics export port 3/15 disable
set qos statistics export port 3/16 disable

This URL should help you:
http://www.cisco.com/warp/public/473/73.html

Making sure Qos is working?

Hi All,
This question has probably been asked a million times but I cannot find a solid answer. We had our routers setup by an external company and I'm not sure if they completely finished the Qos settings on the routers. How do I check?
I am new to QoS so bear with me.
Our setup can be seen in the diagram attached.
The user switches are running AutoQos on each port
interface GigabitEthernet6/0/46
description ### CISCO VOICE & DATA PORT ###
switchport access vlan 5
switchport mode access
switchport voice vlan 10
srr-queue bandwidth share 10 10 60 20
queue-set 2 <-- Not sure why this is set on some switches and not on others
priority-queue out
mls qos trust device cisco-phone
mls qos trust cos
auto qos voip cisco-phone
spanning-tree portfast
service-policy input AutoQoS-Police-CiscoPhone
There is a global QoS config set automatically by AutoQos template.
The Etherchannel-Trunk ports from the user switches to the Core switches and vice versa have the following commands set
mls qos trust dscp
priority-queue out
Q1: What Qos settings need to be added to the core switch? I have no phones are attached to it.
Currently we have the following global Qos values set
mls qos
mls qos map cos-dscp 0 8 16 24 32 46 48 56
Q2: What Qos settings need to be added to the router subinterface ports and global configs.
mls qos is not set globally but there are a bunch of policy-maps and class-maps?
Subinterface ports
interface GigabitEthernet0/0.10
description ### VOICE VLAN INTERFACE ###
encapsulation dot1Q 10
ip address 192.168.10.254 255.255.255.0
Interface 0/1 to Private network (class-maps and policy maps)
class-map match-all AllTraffic
match any
class-map match-any JTAPI
match access-group 110
class-map match-any voip-sig
match access-group name voip-signal
match ip dscp af31
match ip dscp cs3
class-map match-any voip-rtp
match ip rtp 16384 16383
match ip dscp ef
policy-map llq-voip
class voip-rtp
priority 256
class voip-sig
bandwidth 16
class JTAPI
set dscp cs3
bandwidth 20
class class-default
fair-queue
random-detect dscp-based
policy-map shape-wan
class AllTraffic
shape average 50000000
service-policy llq-voip
policy-map mark-all
class voip-rtp
set dscp ef
class voip-sig
set dscp cs3
class class-default
set dscp default
ip access-list extended voip-signal
permit tcp any any eq 1720
permit tcp any eq 1720 any
permit tcp any any eq 2000
permit tcp any eq 2000 any
permit tcp any any range 11000 11999
permit tcp any range 11000 11999 any
permit tcp any any eq 2748
permit tcp any eq 2748 any
permit tcp any any eq 8404
permit tcp any eq 8404 any
permit tcp any any eq 42027
permit tcp any eq 42027 any
permit tcp any any range 59000 59025
permit tcp any range 59000 59025 any
interface GigabitEthernet0/1
description ### Private Network ###
ip address 192.168.255.2 255.255.255.252
duplex full
speed 100
service-policy input mark-all
service-policy output shape-wan
Still looking into what all these values mean.
Regards

show policy-map interface GigabitEthernet6/0/46 (This is off the Melbourne 3750G-USER01 switch)
GigabitEthernet6/0/46
Service-policy input: AUTOQOS-SRND4-CISCOPHONE-POLICY
    Class-map: AUTOQOS_VOIP_DATA_CLASS (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: ip dscp ef (46)
    Class-map: AUTOQOS_VOIP_SIGNAL_CLASS (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: ip dscp cs3 (24)
    Class-map: AUTOQOS_DEFAULT_CLASS (match-all)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: access-group name AUTOQOS-ACL-DEFAULT
    Class-map: class-default (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
        0 packets, 0 bytes
        5 minute rate 0 bps
show policy-map int GigabitEthernet0/1 (Off the Melbourne 2800 Router )
GigabitEthernet0/1
Service-policy input: mark-all
    Class-map: voip-rtp (match-any)
      422882260 packets, 73717373837 bytes
      5 minute offered rate 117000 bps, drop rate 0 bps
      Match: ip rtp 16384 16383
        422145770 packets, 73561857794 bytes
        5 minute rate 114000 bps
      Match: ip dscp ef (46)
        736511 packets, 155520147 bytes
        5 minute rate 2000 bps
      QoS Set
        dscp ef
          Packets marked 422882281
    Class-map: voip-sig (match-any)
      400358097 packets, 44842004330 bytes
      5 minute offered rate 31000 bps, drop rate 0 bps
      Match: access-group name voip-signal
        396250102 packets, 44527028287 bytes
        5 minute rate 31000 bps
      Match: ip dscp af31 (26)
        2787234 packets, 234418763 bytes
        5 minute rate 0 bps
      Match: ip dscp cs3 (24)
        1320764 packets, 80557256 bytes
        5 minute rate 0 bps
      QoS Set
        dscp cs3
          Packets marked 400358262
    Class-map: class-default (match-any)
      18847301096 packets, 13836330525020 bytes
      5 minute offered rate 16131000 bps, drop rate 0 bps
      Match: any
      QoS Set
        dscp default
          Packets marked 18847294088
Service-policy output: shape-wan
    Class-map: AllTraffic (match-all)
      18031038728 packets, 11420761193505 bytes
      5 minute offered rate 12704000 bps, drop rate 0 bps
      Match: any
      Traffic Shaping
           Target/Average   Byte   Sustain   Excess    Interval Increment
             Rate           Limit bits/int bits/int (ms)      (bytes)
         50000000/50000000 312500 1250000   1250000   25        156250
        Adapt Queue     Packets   Bytes     Packets   Bytes     Shaping
        Active Depth                         Delayed   Delayed   Active
        -      0         850797478 4183363168 170360913 3101776193 no
      Service-policy : llq-voip
        Class-map: voip-rtp (match-any)
          341581698 packets, 27282557780 bytes
          5 minute offered rate 56000 bps, drop rate 0 bps
          Match: ip rtp 16384 16383
            341574850 packets, 27281749554 bytes
            5 minute rate 56000 bps
          Match: ip dscp ef (46)
            6851 packets, 808418 bytes
            5 minute rate 0 bps
          Queueing
            Strict Priority
            Output Queue: Conversation 264
            Bandwidth 256 (kbps) Burst 6400 (Bytes)
            (pkts matched/bytes matched) 2940781/225999928
            (total drops/bytes drops) 537/661802
        Class-map: voip-sig (match-any)
          247531259 packets, 23679757170 bytes
          5 minute offered rate 82000 bps, drop rate 0 bps
          Match: access-group name voip-signal
            247480960 packets, 23672100642 bytes
            5 minute rate 82000 bps
          Match: ip dscp af31 (26)
            49905 packets, 7602622 bytes
            5 minute rate 0 bps
          Match: ip dscp cs3 (24)
            401 packets, 54278 bytes
            5 minute rate 0 bps
          Queueing
            Output Queue: Conversation 265
            Bandwidth 16 (kbps) Max Threshold 64 (packets)
            (pkts matched/bytes matched) 779747/105298466
        (depth/total drops/no-buffer drops) 0/765/0
        Class-map: JTAPI (match-any)
          0 packets, 0 bytes
          5 minute offered rate 0 bps, drop rate 0 bps
          Match: access-group 110
            0 packets, 0 bytes
            5 minute rate 0 bps
          QoS Set
            dscp cs3
              Packets marked 0
          Queueing
            Output Queue: Conversation 266
            Bandwidth 20 (kbps) Max Threshold 64 (packets)
            (pkts matched/bytes matched) 0/0
        (depth/total drops/no-buffer drops) 0/0/0
        Class-map: class-default (match-any)
          17441925990 packets, 11369798942000 bytes
          5 minute offered rate 12554000 bps, drop rate 0 bps
          Match: any
          Queueing
            Flow Based Fair Queueing
            Maximum Number of Hashed Queues 256
        (total queued/total drops/no-buffer drops) 0/380841/0
             exponential weight: 9
   dscp    Transmitted      Random drop      Tail drop    Minimum Maximum Mark
           pkts/bytes       pkts/bytes       pkts/bytes    thresh thresh prob
   af11       0/0               0/0              0/0           32      40 1/10
   af12       0/0               0/0              0/0           28      40 1/10
   af13       0/0               0/0              0/0           24      40 1/10
   af21       0/0               0/0              0/0           32      40 1/10
   af22       0/0               0/0              0/0           28      40 1/10
   af23       0/0               0/0              0/0           24      40 1/10
   af31       0/0               0/0              0/0           32      40 1/10
   af32       0/0               0/0              0/0           28      40 1/10
   af33       0/0               0/0              0/0           24      40 1/10
   af41       0/0               0/0              0/0           32      40 1/10
   af42       0/0               0/0              0/0           28      40 1/10
   af43       0/0               0/0              0/0           24      40 1/10
    cs1 13779821/19479353285      2/2948           0/0           22      40 1/10
    cs2       0/0               0/0              0/0           24      40 1/10
    cs3       0/0               0/0              0/0           26      40 1/10
    cs4       0/0               0/0              0/0           28      40 1/10
    cs5       0/0               0/0              0/0           30      40 1/10
    cs6 1460106/221012238       0/0              0/0           32      40 1/10
    cs7       0/0               0/0              0/0           34      40 1/10
     ef       0/0               0/0              0/0           36      40 1/10
   rsvp       0/0               0/0              0/0           36      40 1/10
default 246455719/11349551197230 257261/380315020 123578/179057908   20      40 1/10
    Class-map: class-default (match-any)
      0 packets, 0 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
Hope this helps?
Do I need any class-maps policy-maps set on the Melbourne 3750X-CORE and 3750X switches.
* I am looking at basic Qos rules Voip packets take priority ... leave all other data packets untouched.
Thanks for having a look. Cheers

"vlan dot1q tag native" end-to-end QoS switched network

Guys,
Can I use this in my switched network design, (without using 802.1q tunneling as documentation always seems to mention this vlan in a vlan scenario???)
I have native vlans and I want to act upon the 802.1p CoS field from end-to-end in my switched network. If the packet happens to be in a native vlan, I cannot do this.
ie
pc------accessswitch--------distswitch/rtr
between access and distribution, there is a dot1q trunk, and the native vlan is the vlan what the pc is in
Choices.
run this comand vlan dot1q tag native
dont have a native vlan, ie have vlan 1 (default as native) on the dot1q up to the dist
or act only upon L3 dscp
Can anyone help?
Many thx,
Ken

Hi there,
Many thx for that. This I understand and the question was really, if I wanted to use a dot1p tag in the dot1q header, but the vlan that the PC was on was the same vlan as the native vlan on the dot1q trunk, what is the best option to ensure I can action qos.
Just trust dscp on the trunks always
tag the native,
or just dont run a native vlan
I hope this makes sense. Sorry if I was a little confusing b4.
Thx
Ken

DSCP to CoS mapping: Avaya traffic

It appears that Avaya marks its voice traffic as follows:
L2 signaling cos 6 L3 signaling dscp 34
L2 audio cod 6 L3 audio dscp 46
Has anyone interacted with theses settings and what are the right mappings for 6500 series Modules?
I am about to use the following:
#mls qos map dscp-cos 34 46 to 6
#mls qos map dscp-cos 48 to 5 "move IP control to cos 5)
#mls qos map cos-dscp 0 8 16 24 32 46 48 56 leave cos to dscp unchanged.
Finally use: #mls qos thrust dscp on input interfaces.
Can anyone clarify?
Thanks.

The 6608 and 6624 internal port is treated as trust-cos to the Catalyst 6000. So the default COS-to-DSCP mapping of the cards will determine the DSCP values with which the IP packets are marked unless they are changed in the switch.
The 6608 and 6624 will tag packets as follows:
COS = 5 for rtp traffic
COS = 3 for signalling traffic
By default on the Catalyst 6000, these COS values map in IP packets to DSCP 24 (COS = 3) and 40 (COS = 5) as shown in the table below.
Generally, the recommended DSCP values to use in a VoIP network differ slightly. They are:
DSCP = 46 for rtp traffic (Recommended Expedited Forwarding (EF) value)
COS = 26 for signalling traffic (AF31)
It may be necessary to change the default COS-DSCP mapping on the Catalyst 6000 so that the DSCP markings in packets generated by the 6608 and 6624 cards conform to the network policy. For example, if other devices in the network are marking packets with the recommended values.
Information on how to change the default COS-DSCP mapping is provided in the Mapping Received CoS Values to Internal DSCP Values section of Catalyst 6000 Family Software Configuration Guide.

QoS in C6500 Sup2T

Hi Everyone,
I've got a C6504 Chassis with Sup2T with default qos configuration (auto qos default gobal command). When I use the "show platform qos ip" command I can see the following output:
QoS Summary [IPv4]: (* - shared aggregates, Mod - switch module, Sid - Switch Id, E - service instance)
                     (^ - class-copp keyword)
          Int Sid Mod Dir Class-map DSCP Agg Trust Fl      AgForward      AgPoliced
                                            Id         Id
           CPP   1 1 In ^mcast-v4-    0    1     No 0              0              0
           CPP   1 1 In ^match-igm   48    2     No 0              0              0
           All   1 1   -    Default    0    0*    No 0 11780258945376              0
           All   1 4   -    Default    0    0*    No 0 28254137334635              0
1. ¿Why I can only see traffic with DSCP=0 if I know there are traffic with different DSCP markings passing through my C6504?
The interfaces are properly configured to trust cos markings and queue traffic
MLS#show queueing interface gi1/1/1
Interface GigabitEthernet1/1/1 queueing strategy: Weighted Round-Robin
Port QoS is enabled globally
Queueing on Gi1/1/1: Tx Enabled Rx Enabled
MLS#interface GigabitEthernet1/1/1
switchport
platform qos trust cos
2. Does the Sup2T with default qos configuration rewrite to 0 all DSCP markings by default?
Thank you in advance.

What is the IOS version you are running & what is the line card in your chassis module 1 ?, the commands output seems different what I am seeing in one of my Sup2T.
CR01#sh ver | in Soft
Cisco IOS Software, s2t54 Software (s2t54-ADVENTERPRISEK9-M), Version 15.1(2)SY, RELEASE SOFTWARE (fc4)
CR01#show platform qos ip
   QoS is in queueing-only mode
CR01#show queueing interface g6/1
Interface GigabitEthernet6/1 queueing strategy: Weighted Round-Robin
Port QoS is enabled globally
Queueing on Gi6/1: Tx Enabled Rx Enabled
Trust boundary disabled
Trust state: trust DSCP
Trust state in queueing: trust COS
Extend trust state: not trusted [COS = 0]
Default COS is 0
    Queueing Mode In Tx direction: mode-cos
    Transmit queues [type = 1p3q4t]:
    Queue Id    Scheduling Num of thresholds
       01         WRR                 04
       02         WRR                 04
       03         WRR                 04
       04         Priority            01
    WRR bandwidth ratios: 100[queue 1] 150[queue 2] 200[queue 3]
    queue-limit ratios:     50[queue 1] 20[queue 2] 15[queue 3] 15[Pri Queue]
    queue tail-drop-thresholds
    1     70[1] 100[2] 100[3] 100[4]
    2     70[1] 100[2] 100[3] 100[4]
    3     100[1] 100[2] 100[3] 100[4]
    queue random-detect-min-thresholds
      1    40[1] 70[2] 70[3] 70[4]
      2    40[1] 70[2] 70[3] 70[4]
      3    70[1] 70[2] 70[3] 70[4]
    queue random-detect-max-thresholds
      1    70[1] 100[2] 100[3] 100[4]
      2    70[1] 100[2] 100[3] 100[4]
      3    100[1] 100[2] 100[3] 100[4]
    WRED disabled queues:
    queue thresh cos-map
    1     1      0
HTH
Rasika
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MQC QoS - C3650 - DSCP Trust

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