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? -
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. -
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,
SamBro 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
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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
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alias Create command alias
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Protocol)
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class-map Configure CPL Class Map
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clock Configure time-of-day clock
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configuration Configuration access
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Commands
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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 -
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.
=============================
Please remember to rate useful posts, by clicking on the stars below.
============================= -
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
LukasSarah
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
AndyHi, 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?
AaronI 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 -
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
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
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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