Mls qos map

Hello,
I have two switches with ios, I want to configure the qos, but I have the error message:
Will I need to update the ios or is the platform switch that does not supporting this command?
Switch Ports Model SW Version SW Image
* 1 50 WS-C2960-48TT-S 12.2 (46) SE C2960-LANLITEK9-M
* 1 50 WS-C2960-48TC-S 12.2 (50) SE5 C2960-LANLITEK9-M
Error:
SW(config)#mls qos map policed-dscp 0 10 18 to 8
                                  ^
Best Regards

I am answering this myself.
SW7(config)#mls qos srr input bandwidth ?
  <1-100>  enter bandwidth weight for queue id 1
SW7(config)#mls qos srr input bandwidth 1 ?
  <1-100>  enter bandwidth weight for queue id 2
SW7(config)#mls qos srr input bandwidth 1 1 ?
  <cr>
Its the weight that we mention here. Not the percentage directly.
SW2#show mls qos input-queue 
Queue     :       1       2
buffers   :      90      10
bandwidth :     100     100
priority  :      40       0
threshold1:     100     100
threshold2:     100     100
This will give 40% priority BW to queue and remaining 60% will equally share between bot the queues as their weights are same.
CF

Similar Messages

  • 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..

  • MLS QOS commands not accepted on 3800...what's the alternative?

    ging from 3750 to 3800, MLS QOS commands not accepted on 3800...I'd heard that this command was deprecated, how do we translate our QoS statements onto the new platform?

    To clarify, our 3750 mls qos statements are as follows:
    mls qos map cos-dscp 0 8 16 26 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
    mls qos
    What would all this translate to on the 3800 platform?

  • MLS QoS configuration

    Good Morning, everyone.  I am looking for some clarification with an existing 3750x Switch configuration.  
    I am reviewing the configuration of my network switches and found the following MLS QoS configuration on one of my switches and a partial of this same config on another switch.  Can someone please explain what function, this line of code, is performing; and is it necessary?
    mls qos map policed-dscp  0 14 24 30 38 to 8
    mls qos map policed-dscp  10 to 12
    mls qos map policed-dscp  12 to 14
    mls qos map policed-dscp  26 to 28
    mls qos map policed-dscp  28 to 30
    mls qos map policed-dscp  32 to 34
    mls qos map policed-dscp  34 to 36
    mls qos map policed-dscp  36 to 38
    mls qos map cos-dscp 0 8 16 24 34 46 48 56
    mls qos srr-queue input bandwidth 70 30
    mls qos srr-queue input threshold 1 80 90
    mls qos srr-queue input threshold 2 80 90
    mls qos srr-queue input priority-queue 2 bandwidth 30
    mls qos srr-queue input dscp-map queue 1 threshold 2 16 24
    mls qos srr-queue input dscp-map queue 1 threshold 3 48 56
    mls qos srr-queue input dscp-map queue 2 threshold 1 36 38
    mls qos srr-queue input dscp-map queue 2 threshold 2 32 34
    mls qos srr-queue input dscp-map queue 2 threshold 3 40 46
    mls qos srr-queue output cos-map queue 1 threshold 2 4
    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 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 2 32 34
    mls qos srr-queue output dscp-map queue 1 threshold 3 40 46
    mls qos srr-queue output dscp-map queue 2 threshold 1 18 20 22 26 28 30
    mls qos srr-queue output dscp-map queue 2 threshold 2 16 24
    mls qos srr-queue output dscp-map queue 2 threshold 3 48 56
    mls qos srr-queue output dscp-map queue 3 threshold 3 0
    mls qos srr-queue output dscp-map queue 4 threshold 1 8
    mls qos srr-queue output dscp-map queue 4 threshold 2 12 14
    mls qos srr-queue output dscp-map queue 4 threshold 3 10
    mls qos queue-set output 1 threshold 1 100 100 100 100
    mls qos queue-set output 1 threshold 2 80 90 100 400
    mls qos queue-set output 1 threshold 3 100 100 100 400
    mls qos queue-set output 1 threshold 4 90 100 100 400
    mls qos queue-set output 1 buffers 15 30 35 20
    mls qos
    If more information is required for a response, please let me know.
    Thank you, E.

    Disclaimer
    The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
    Liability Disclaimer
    In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
    Posting
    The function of each command is perhaps best explained by the Command Reference and Software Configuration Guide for your IOS version.  If you have a question that's unanswered by those, please post another question.  BTW, Cisco also publishes whitepapers that further explain some subjects.  There are a couple on 3750 QoS.
    Regarding whether a particular command is necessary would depend on what your QoS policy is attempting to accomplish.

  • 4500-x Cos-DSCP QoS mapping

    Hello,
    I'm working on a 4500-x and the command "show qos maps" is not accepted. Is there a way to show the COS-DSCP mapping? The only show qos command accepted is the show qos interface.
    Thanks, 
    Sam

    Bro Davis, this is based on the license that u use in ur switch, because there r some features r supported on specific license while it is not supported on the others, so u have to check ur license at the first, if ur license support this feature u can issue this command: show mls qos map cos
    ex:
    4500-x #show mls qos map cos
    CoS-DSCP Mapping Table
    CoS:    0 1  2  3   4   5   6   7
    DSCP: 0 8 16 26 34 46 48 56
    BR.
    Mostafa.

  • Version 03.03.00.XO - MLS QOS not supported

    Hi All,
    Anyone face the same problem with the following IOS Version?
    MLS QOS is not supported in global command.
    Switch#sh ver
    Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500es8-UNIVERSALK9-M), Version 03.03.00.XO RELEASE SOFTWARE (fc2)
    Technical Support: http://www.cisco.com/techsupport
    Copyright (c) 1986-2013 by Cisco Systems, Inc.
    Compiled Wed 14-Aug-13 07:26 by prod_rel_team
    Cisco IOS-XE software, Copyright (c) 2005-2013 by cisco Systems, Inc.
    All rights reserved.  Certain components of Cisco IOS-XE software are
    licensed under the GNU General Public License ("GPL") Version 2.0.  The
    software code licensed under GPL Version 2.0 is free software that comes
    with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such
    GPL code under the terms of GPL Version 2.0.  For more details, see the
    documentation or "License Notice" file accompanying the IOS-XE software,
    or the applicable URL provided on the flyer accompanying the IOS-XE
    software.
    ROM: 15.1(1r)SG2
    Switch uptime is 6 minutes
    System returned to ROM by power-on
    Running default software
    Jawa Revision 3, RadTrooper Revision 0x0.0x41, Conan Revision 0x1449
    Last reload reason: power-on
    This product contains cryptographic features and is subject to United
    States and local country laws governing import, export, transfer and
    use. Delivery of Cisco cryptographic products does not imply
    third-party authority to import, export, distribute or use encryption.
    Importers, exporters, distributors and users are responsible for
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    agree to comply with applicable laws and regulations. If you are unable
    to comply with U.S. and local laws, return this product immediately.
    A summary of U.S. laws governing Cisco cryptographic products may be found at:
    http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
    If you require further assistance please contact us by sending email to
    [email protected].
    License Information for 'WS-X45-SUP8-E'
        License Level: entservices   Type: Permanent
        Next reboot license Level: entservices
    cisco WS-C4506-E (P5040) processor (revision 2) with 4194304K bytes of physical memory.
    Processor board ID FXS1812Q346
    P5040 CPU at 2.2GHz, Supervisor 8-E
    Last reset from PowerUp
    1 Virtual Ethernet interface
    20 Ten Gigabit Ethernet interfaces
    511K bytes of non-volatile configuration memory.
    Configuration register is 0x2101
    SWITCH(config)#mls qos
                         ^
    % Invalid input detected at '^' marker.
    SWITCH(config)#
    SWITCH(config)#?
    Configure commands:
      aaa                         Authentication, Authorization and Accounting.
      access-list                 Add an access list entry
      access-session              Access Sesion Global Configuration Commands
      agent-server                Modify DNS server properties
      alias                       Create command alias
      ancp                        Configure ANCP
      archive                     Archive the configuration
      arp                         Set a static ARP entry
      async-bootp                 Modify system bootp parameters
      audit                       Router Audit
      authentication              Auth Manager Global Configuration Commands
      auto                        Configure Automation
      banner                      Define a login banner
      beep                        Configure BEEP (Blocks Extensible Exchange
                                  Protocol)
      bfd                         BFD configuration commands
      bfd-template                BFD template configuration
      boot                        Modify system boot parameters
      bridge                      Bridge Group.
      buffers                     Adjust system buffer pool parameters
      bulkstat                    Bulkstat Application
      call-home                   Enter call-home configuration mode
      cdp                         Global CDP configuration subcommands
      cef                         Cisco Express Forwarding
      cisp                        Set CISP parameters
      class-map                   Configure CPL Class Map
      clns                        Global CLNS configuration subcommands
      clock                       Configure time-of-day clock
      cluster                     Cluster configuration commands
      cns                         CNS agents
      comet-server                Configure comet-server properties
      config-register             Define the configuration register
      configuration               Configuration access
      control-plane               Configure control plane services
      crypto                      Encryption module
      cts                         Cisco Trusted Security commands
      default                     Set a command to its defaults
      default-value               Default character-bits values
      define                      interface range macro definition
      device-sensor               IOS Sensor Commands
      diagnostic                  Configure diagnostic information
      dns-server                  Modify DNS server properties
      dnsix-dmdp                  Provide DMDP service for DNSIX
      dnsix-nat                   Provide DNSIX service for audit trails
      do-exec                     To run exec commands in config mode
      dot1x                       IEEE 802.1X Global Configuration Commands
      downward-compatible-config  Generate a configuration compatible with older
                                  software
      eap                         EAP Global Configuration Commands
      emm                         Specify pre-loading of MDF
      enable                      Modify enable password parameters
      end                         Exit from configure mode
      energywise                  EnergyWise Global Configuration Commands
      epm                         EPM Global Configuration Commands
      errdisable                  Error disable
      ethernet                    Ethernet configuration
      event                       Event related configuration commands
      exception                   Exception handling
      exit                        Exit from configure mode
      fallback                    Fallback configuration commands
      fhrp                        Configure First Hop Redundancy Protocols
      file                        Adjust file system parameters
      fips                        FIPS mode after next reload
      flow                        Global Flow configuration subcommands
      format                      Format the output
      global-address-family       Enter address-family base routing topology mode
      help                        Description of the interactive help system
      hostname                    Set system's network name
      hw-module                   Apply command (e.g. shutdown) to specified
                                  hardware target
      hw-module                   Control of individual components in the system
      hw-switch                   Control of individual components in the switch
      id-manager                  ID Pool Manager
      identity                    Identity Configuration Commands
      infra-test                  Configure end2end properties
      interface                   Select an interface to configure
      ip                          Global IP configuration subcommands
      ipc                         Configure IPC system
      ipv6                        Global IPv6 configuration commands
      isis                        Global ISIS configuration subcommands
      issu                        no description
      key                         Key management
      kron                        Kron interval Facility
      l2                          Layer 2
      l2protocol-tunnel           Tunnel Layer2 protocols
      lacp                        LACP configuration
      li-view                     LI View
      license                     Configure License
      line                        Configure a terminal line
      link                        Enable Link State Tracking feature
      lldp                        Global LLDP configuration subcommands
      location                    Global location configuration commands
      logging                     Modify message logging facilities
      login                       Enable secure login checking
      mab                         MAC Authentication Bypass Global Configuration
                                  Commands
      mac                         Global MAC configuration subcommands
      macro                       Macro configuration
      media-proxy                 Global media proxy configuration
      mediatrace                  Mediatrace Application
      memory                      Configure memory management
      metadata                    Metadata Application
      mka                         MACsec Key Agreement (MKA) configuration
      module                      Module
      monitor                     Monitoring different system events
      mvr                         Enable/Disable MVR on the switch
      netconf                     Configure NETCONF
    Thank you.

    Hi,
    QOS implementation has radically changed since the advent of
    sup-7 & later
    You no longer set mls qos as qos is on the engine by default.
    Please see the following links
    http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-4500-series-switches/white_paper_c11-539588.html
    "Ingress QoS: Default Actions
    First and foremost, QoS does not need to be enabled on the Supervisor Engine, it is on by default in compliance with the MQC construct.
    When a packet arrives at an interface, there are two options to take into consideration: is there a policy attached or not? If the packet arrives with or without a marking and there is not a policy attached to the interface, packets will flow through the switch untouched. There are no questions as to where the packet came from or if it has a valid marking. If the packet arrives with or without a marking, and a policy is attached to the interface, the packet will only then be subject to the policy classification."
    And the config guide
    http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/15-1/XE_330SG/configuration/guide/config/qos_mrg.html#wp1461453
    Hope this helps
    Regards
    Alex

  • Cisco 3560 switch| mls qos trust dscp question

    Hi everybody
    Hi everybody .
    Please consider the following example:
    3560 sw f1/1--------trunk---SW2
    3560 sw
    f1/1
    mls qos trust dscp
    3560 is using default cos-dscp map, assume a 3560 receives a frame carrying IP packet on f1/1 with COS 4, what will 3560 switch do?
    1) will it use its default cos --dscp map  ( cos 4--.dscp 32) and rewrite 32 in dscp field  of the packet in the frame and provide PHB for dscp 32 ?
    Much appreciated!!
    Have  a great weekend.

    Hi
    No it will not trust the cos value, because You have configured to trust dcsp. So, the switch will trust the dcsp value in the incoming frame.
    /Mikael

  • Mls qos trust

    Hello, if the command 'mls qos trust xxxxx' is not issued, and qos is turned on for the interface, does this mean the switch will erase all cos and dscp markings received, therefore preventing me from testing packets/frames against these cos/dscp values ?
    So if I want to set up class maps, policy maps, and then service policies, it is essential that I:
    1. turn on mls qos ?
    2. enter a trust statement in order to preserve the cos or dscp values that I want to test against ?
    3. now I can test against against cos or dscp values ?
    Thanks for clarification.

    That is correct, when you would use for instance mls qos trust cos. You would need to define you cos<>dscp mappings on the switch and the switch will apply qos accordingly.
    So really if you have an ingress switch port and you trust cos or dscp, you can still have egress policies on a port (on the same switch), using these cos or dscp values.
    the mls qos trus command is just a way to make it easier to rely on existing cos/dscp values that a phone sends (based on your CUCM configuration,), without the need for you having to configure it explicitly on each access port.
    =============================
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    =============================

  • Mls qos trust{cos/ip-precedence/dscp} command

    Hi every body!
    I have few questions
    1)
    The command " mls qos trust dscp" is only valid on mulilayer switch or it is also valid for layer 2 switch? If layer 2 switch is configured with that command, can it modify the dcsp value based on policy?
    2)is the following correct:
    switch(config-if) mls qos trust dscp
    switch will set the cos value to set default. If the default set is zero, then frame will be processed by best-effort delivery.
    But the egress-queue will be decided by dscp value in the packet. A dscp to cos map will be used to drive the cos value and then frame will be placed in the queue that corresponds to cos value.( off course if egress port is configured for trunk)
    thanks a lot and I wish America and all of you a happy new year!
    thanks a lot!

    Sarah
    1) L2 switches can trust the dscp marking as well. The 2960 is a layer 2 only switch and the default is untrusted but if you then enter
    "mls qos trusted" you have a choice of 'cos|dscp|ip-precedence'. The default if no choice is entered is DSCP.
    2) If "mls qos trust dscp" is entered then the switch will use the DSCP marking found in the packet. This will then be used as the internal DSCP marking that all switches use. Unless you have a DSCP-DSCP mutation map the value used will be the value received in the packet.
    Jon

  • Mls qos trust cos vs mls qos cos in cat6k

    Hello
    I am trying to configure basic qos topology with two 6k connected to each other by the trunk port.
    According to the documentation, if I set the mls qos cos value at the interface level I should modify the default cos on it, and all packets leaving incoming to this port, should be marked with the new cos value.
    http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6000-series-switches/24055-173.html
    Unfortunately, when I set such config, all incoming packets transmitted through this interface was tagged with cos = 0 until I set the "mls qos trust cos" on the same interface.
    Does anybody can explain to me this strange behavior?
    I would like to mention that both 6k was connected to each other with ws-x6548-GE-TX modules.
    Thank you in advance.
    Ragards
    Lukas

    Sarah
    1) L2 switches can trust the dscp marking as well. The 2960 is a layer 2 only switch and the default is untrusted but if you then enter
    "mls qos trusted" you have a choice of 'cos|dscp|ip-precedence'. The default if no choice is entered is DSCP.
    2) If "mls qos trust dscp" is entered then the switch will use the DSCP marking found in the packet. This will then be used as the internal DSCP marking that all switches use. Unless you have a DSCP-DSCP mutation map the value used will be the value received in the packet.
    Jon

  • Catalyst 3550 & 3560/3750 command 'show mls qos interface statistics'

    On the Catalyst 3550 the command 'show mls qos interface statistics' will show ingress packet (or byte) counts with DSCP values. If you have policers configured then it also shows a count of packets that have been marked down to another DSCP value due to policing or any that have been dropped (obviously 'mls qos monitor dscp x' needs configuring). The same command on the 3560/3750 only shows the ingress & egress DSCP values, there is no column that shows packets (or bytes) that have been policed or dropped. Is there any command to display the same information with the 3560/3750?
    Neither platform show counters when the command 'show policy-map interface x/x' is used so this won't work.
    Thanks
    Andy

    Hi, I believe there is a command on the 3560 'sh mls qos interface policers' may be what you are looking for.
    Here is what the command says it outputs:
    To display QoS information at the interface level. This information includes:
    The configuration of the egress queues and the CoS3-to-egress-queue map
    Which interfaces have configured policers
    Ingress and egress statistics, which includes the number of bytes that have been dropped

  • 3560 mls qos interface statistics output

    Hi
    I've seen questions like this before, but never seen a satisfactory answer... I can't find any good documentation anywhere about this command.
    If you run it, you get tabular output of some statistics - with no headers to the columns.
    The closest thing I've found to it is in this document:
    http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12113ea1/3550cr/cli2.htm#wp2418191
    It shows the fields as: Incoming, No_Change, Classified, Policed and dropped.
    I have a switch with a modified cos-dscp map so that cos 5 is marked to dscp 46. This shows normal traffic as in the row titled 0-4 in the 'incoming' column, and cos 5 traffic appears in the 40-44 row and the 'dropped' column... which can't be right.
    Anyone know what the columns mean?
    Aaron

    I figured this out after looking at it sideways and upside down. Here is part of the output from the command I ran on one of our 3750 switches (copy it and paste it into notepad so the rows stretch back out): 'sh mls qos int f0/35 statistics'
    dscp: outgoing
    0 - 4 : 63683 0 0 0 0
    5 - 9 : 0 0 0 0 0
    10 - 14 : 0 0 0 0 0
    15 - 19 : 0 0 0 0 0
    20 - 24 : 0 0 0 0 81
    25 - 29 : 0 0 0 0 0
    30 - 34 : 0 0 0 0 13366
    35 - 39 : 0 0 0 0 0
    40 - 44 : 0 0 0 0 0
    45 - 49 : 0 10749 0 13653 0
    50 - 54 : 0 0 0 0 0
    55 - 59 : 0 0 0 0 0
    On the left side X - X are the DSCP values for the five columns of that row. For example, 20 - 24 row has the number 81 in the fith column. That shows that 81 packets with the DSCP value of 24 went out of that port. In row 45 - 49, 10749 packets with DSCP of 46 and 13653 packets with DSCP value of 48 went out that port.
    I finally was able to use this table to show that a video conferencing unit was truely generating voice packets with DSCP 46 (EF), video packets with DSCP 34, and call control packets with DSCP 24 (this is COS 3 that is mapped to DSCP 24 in the cos-dscp map entry.)
    So to clarify, the five columns have nothing to do with Incoming, No_Change, Classified, Policed and dropped, they represent the number of packets that have the DSCP values as referred to by the far left table.
    Hope this helps.

  • Without 'MLS QOS' in 6500 does any interface queueing and trusting take place?

    I have a 6500 that does not have 'mls qos' global configured, although the interfaces do have 'mls qos trust dscp' on them as in:
    interface GigabitEthernet3/3
    switchport
    switchport access vlan 536
    switchport mode access
    switchport voice vlan 910
    logging event link-status
    mls qos trust dscp
    spanning-tree portfast
    When I 'show queueing int gx/x', it does show the default queueing structure of the interface as in:
    LLT-6509AS-A#sh queueing int g3/3
    Interface GigabitEthernet3/3 queueing strategy:  Weighted Round-Robin
      QoS is disabled globally
      Port is untrusted
      Extend trust state: not trusted [COS = 0]
      Default COS is 0
        Queueing Mode In Tx direction: mode-cos
        Transmit queues [type = 1p3q8t]:
        Queue Id    Scheduling  Num of thresholds
           01         WRR                 08
           02         WRR                 08
           03         WRR                 08
           04         Priority              01
    ---- snip ----
        queue thresh cos-map
        1     1      0 1 2 3 4 5 6 7
        1     2     
        1     3     
        1     4     
        1     5     
        1     6     
        1     7     
        1     8     
      Packets dropped on Transmit:
        BPDU packets:  0
        queue              dropped  [cos-map]
        1                        0  [0 1 2 3 4 5 6 7 ]
        2                        0  []
        3                        0  []
        4                        0  []
      Packets dropped on Receive:
        BPDU packets:  0
        queue              dropped  [cos-map]
        1                        0  [0 1 2 3 4 5 6 7 ]
    So just what does the global 'mls qos' do?  Without it is the command 'mls qos trust dscp' ignored?
    I'm trying to track down where in our network dscp settings are being stripped out of packets and this is when I noticed the 'mls qos' was not configured.

    it enables QOS on the switch, without it no QOS is being used.
    Sent from Cisco Technical Support iPhone App

  • Mls qos VS mls qos trust

    Hello world!
    I want to enable qos on a 3560 switch,
    So, I put:
    Overall setup mode "mls qos"
    Question:
    is what it is Verily nessaiire to interface configuration mode: "mls qos trust"?
    Regards,

    Disclaimer
    The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
    Liability Disclaimer
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    Posting
    Generally, on many Catalyst switches, once you enable QoS, they will erase an ingress CoS/ToS markings unless your trust it or otherwise (i.e. policy) maintain it.
    I.e. the answer to your question is an "it depends"; but unless you want the markings reset to zero, the answer is probably yes (you want to trust).

  • 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..

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