Cat. 3750 QoS Queue statistics

Hi all:
Does anyone know a way to see input and output queue statistics like occupation, number of frames discarded due to threshold reached etc ... on a Cat 3750
May be there exists a MIB...
Best regs.

the command "show mls qos interface" should help.
check out the following link for the command reference :
http://www.cisco.com/en/US/products/hw/switches/ps5023/products_command_reference_chapter09186a008017f8ed.html#2418190

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CAT 3750 QOS+ Polycom Video Conferencing + Voice

I am wondering has anyone out there has a good example or how to Tune DiffServ parameter in IOS 12.2(25)SEA that can get an Optimal response on a T1 WAN Link.
1)Voice: Expedited & rate limited to Not more than 350Kbps
2)Video: about 400Kbps
3)Telnet & other mission critical Apps limited to 200Kbps
4)FTP, HTTP: Ratelimited to 500K
5) Rest of Bandwidth for other traffic.
Any help is appreciated.

Please refer to the QoS configuration guide for tuning the DiffServ parameter.
http://www.cisco.com/en/US/products/hw/switches/ps5023/products_configuration_guide_chapter09186a00803947f0.html

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

CoS/DSCP to queue mapping in Cat 3750

Hi..
Cat 3750 supports mapping of CoS to queue as well as mapping DSCP to queue.
WOuld like to understand which one will the switch use when actually placing packets in the queue..
thanks
Eng Wee

My apologies, that was not a very good explanation :-)
Here is what really happens:
- when a frame is received on a port, the switch maps the CoS or DSCP in the packet to a QoS label to distinguish one kind of traffic from another. If the port is set to trust CoS, the CoS value is used to generate the QoS label. If the port is set to trust DSCP, the DSCP value is used to generate the QoS label.
- The QoS label that is generated identifies all future QoS actions to be performed on this packet.
- when the packet is switched to the egress interface, an output queue is selected based on the QoS label. If the QoS label was based on DSCP, the DSCP-to-queue mapping is used. If the QoS label was based on CoS, the CoS-to-queue mapping is used.
Hope that helps - pls rate the post if it does.
Paresh

3750 QoS - egress interface

Please guide me to understand the 3750 QoS mechanism.
Q1) DOC say "priority-queue out" is ignore shape and share command. is it meaning always give priority to cos=5(or dscp=ef) traffic regardless the shape command?
Q2) I want to give 10% guaranteed bandwidth to voice traffic. what's best command in the 3750 egress interface? shape only or combine with priority-queue?
Q3) Any doc explained the output for the command "show mls qos interface f1/0/1 statistics"? the meaning of the each field.
Thanks in advance,

Hi,
1. That is correct. The expedite queue is a priority queue, and it is serviced until empty before the other queues are serviced. This has the potential to hog all the bandwidth on an interface....
2. I would use the priorty-queue command as it will give the best jitter and latency characteristics for your voice traffic. If you want to limit this bandwidth, you should do it via policing on ingress interfaces.
3. Check out this link:
http://www.cisco.com/en/US/products/hw/switches/ps5023/products_command_reference_chapter09186a00805023be.html#wp1947019
Hope that helps - pls rate the post if it does.
Regards,
Paresh

3750 qos - buffer size

I am putting together a VOIP qos config for a number of different switch types on of which is the 3750. We have a load of these switches an although the SRR method is different to me I think I have a handle on it.
The software config guides make numerous mention of configuring the queue sizes and weights etc in terms of buffer space percentage.
I believe that the amount of space available for egress and ingress buffers is fixed so I have a simple question.
What is the size of the total available buffer space either in bytes or number of packets ?
I cant find this anywhere. Seems to me that trying to allocate buffer space and weights without this info is more or less guessing.
I have the software config guide which is quite good but seems to leave out this kind of info, can anyone suggest a more complete document which may help ?
Many Thanks
Shaun

two things...first things first:
1) see if AutoQoS (introduced in 12.2(15)T) will work for you to create a baseline QoS requirement...this may allieviate your need to crunch so many numbers/scenarios before you actually know what QoS your network requires.
2) the queues can be shared by percentage or shaped by bandwidth.
see the following links for 3750 QoS sharing & shaping:
http://www.cisco.com/en/US/products/hw/switches/ps5023/products_white_paper09186a00801b096a.shtml#wp41099
see the following link for more info on 3750 QoS:
http://www.cisco.com/en/US/netsol/ns577/networking_solutions_white_paper09186a00801eb831.shtml

N5k QoS Policy Statistics

Hi there,
I've got the follwoing problem, I would like to enable the QoS policy statistics on my Nexus 5010 running firmware 5.0(3)N2(2a).
This is where I am at:
nexus# show policy-map interface
Global Statistics status : enable
Ethernet1/1
     Service-policy (qos) input:      default-in-policy
          policy statistics status:     disabled
     Service-policy (queuing) input:     default-in-policy
          policy statistics status:          disabled
     Service-policy (queuing) output: adapted-out-policy
          policy statistics status:        disabled
As you can see I managed to enable the statistics globally via "(config)# qos statistics" but I don't have any clue how to enable the statistics for every service-policy on every interface. The config guides and examples already had them enabled but didn't mention the corresponding command(s).
I really hope someone can help me on this.
Thanks in advance!
Greetings!

Hi,
thanks for answering. (How) Do the policy statistics status and the "show queuing interface e x/y" information differ?
Is it planned to support the policy statictics status with a later NX-OS release?
And what I really don't understand, why is it possible to enable the policy statistics globally when I can't see anything afterwards? What is this command good for in the current release?
Looking forward to get more answers ;-)
Thx again!

Disp+work.exe - Running but dialog queue statistics unavailable

Hi,
We have two diferent instances in the same machine. One on them have disp+work.exe in yellow and show message "Running but dialog queue statistics unabailable". This is right, the queue statistics have no item to show, but I can login perfectly in sapgui and see the processes in tx sm50.
Where sapmmc read from? Instance profiles? Any other file?
Thanks for all.

Yes, problem solved.
I stopped windows instance service and overwrote the exe.
Thanks for all again

CAT 3750 and WCCP?

Is WCCP supported in CAT 3750?

Is WCCP supported in CAT 3750?
Hi,
Yes WCCP is supported with release 12.2 (37) SE in IP Services.Check out the below link from cisco for more information
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/prod_qas09186a00801b0971.html
Hope to Help !!
Ganesh.H
Remember to rate the helpful post

Uccx 10.5 can i modify Queue Statistics for Agents???

Hi,
I have UCCX 10.5 but the queue statistics for Agents phones are updated every 10 seconds, I need to reduce every 5 seconds, any ideas???
Thanks!

Hi Matt,
All the Live Data gadgets come from the Cisco Finesse Administration which contains the layout. It is the users preference whether or not to change the existing Live Data gadgets.
Usually, we dont play around with these, but the most common request we have got from customers is the display of the Not Ready Reason Code labels than the code.
We are tracking this as an enhancement for 11.0 but not officially committed.
Regards,
Arundeep

3750 - Show mls qos interface statistics

Hi All,
Sorry if this is posted in the wrong place but can anyone shed any light on the meaning of the five columns given in the output for the following command on a 3750 ?
Show Mls Qos Interface <interface id> Statistics
Many Thanks
Shaun

I think that this is my first post, so I hope it will be useful ;-)
It's indeed very strange, I faced the same problem before, so I tried to check older switches, and I was able to find what these values are, for example, if You check the link :
Understanding QoS Policing and Marking on the Catalyst 3550
http://www.cisco.com/en/US/products/hw/switches/ps646/products_tech_note09186a00800feff5.shtml
You will find that these five fields mean:
incoming   no_change       classified      policed    dropped (in pkts)
This is a description of the fields in the example:
Incoming—shows how many packets arrive from each           direction
NO_change—shows how many packets were trusted (such           as QoS level not changed)
Classified—shows how many packets have been assigned           this internal DSCP after classification
Policed—shows how many packets were marked down by           policing; DSCP shown before markdown.
Dropped—shows how many packets were dropped by           policing

3750 - mls qos queue-set output threshold

In the IOS command, http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_44_se/command/reference/cli1.html#wp2144505. The drop-threshold1 and 2 is in the range from 1 3200%. Can somebody elaborate on the 3200%. How do they determine that number and what that number means to my threshold? Thanks

The drop threshold should be lower than the shutdown threshold (if configured) and should be based on the maximum
amount of PDUs you expect to receive on a port and on the CPU utilization during peaks hours. These values usually determine what is a normal peak condition and therefore what could be an abnormal peak condition. Then you can set the threshold between the two to avoid excessive spikes of PDUs on a port

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.

4500 Sup7E Show QoS packet statistics

Hi,
I am trying to identify what QoS marked packets are hitting an interface on my 4500E
Previously with the likes of the 2900 / 3500 I could collect the below information which was a great insight into the packets going through the interface. Is there anything like this for the 4500E on a Sup7? I've not been able to find anything.so far.
xxx-C2960S-1#sh mls qos interface gi 1/0/7 statistics
GigabitEthernet1/0/7 (All statistics are in packets)
dscp: incoming
0 - 4 : 1302269597 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 0
25 - 29 : 0 0 0 0 0
30 - 34 : 0 0 0 0 0
35 - 39 : 0 0 0 0 0
40 - 44 : 0 0 0 0 0
45 - 49 : 0 5423748 0 0 0
50 - 54 : 0 0 0 0 0
55 - 59 : 0 0 0 0 0
60 - 64 : 0 0 0 0
dscp: outgoing
0 - 4 : 468742 0 0 0 2
5 - 9 : 0 0 0 0 0
10 - 14 : 0 0 0 0 0
15 - 19 : 0 0 0 88 0
20 - 24 : 0 0 0 0 0
25 - 29 : 0 1 0 0 0
30 - 34 : 0 0 0 0 0
35 - 39 : 0 0 0 0 0
40 - 44 : 712552 0 0 0 0
45 - 49 : 0 103878 0 0 0
50 - 54 : 0 0 0 0 0
55 - 59 : 0 0 0 0 0
60 - 64 : 0 0 0 0
cos: incoming
0 - 4 : 1308766828 0 0 0 0
5 - 7 : 0 0 0
cos: outgoing
0 - 4 : 798470028 5273 27854 4668 26113
5 - 7 : 1528536 3100 6624488
output queues enqueued:
queue: threshold1 threshold2 threshold3
queue 0: 1524413 0 0
queue 1: 804613095 1111802 6650008
queue 2: 89 0 0
queue 3: 0 0 0
output queues dropped:
queue: threshold1 threshold2 threshold3
queue 0: 706 0 0
queue 1: 4426 0 0
queue 2: 0 0 0
queue 3: 0 0 0
Policer: Inprofile: 0 OutofProfile: 0
xxxx-C2960S-1#

Hi,
I believe 4500E uses MQC style. if you have a policy map attached to the interface, you could use
sh policy-map interface <> <direction>
Hope this helps and Kindly rate all helpful posts.
Thanks,
M

Cat3750 per interface queue statistics

Hi there
I know each interfaces has 4 outgoing queues and one can be configured to have the highest priority.
So far I have not seen a command or way to know exactly how many packets/bytes are being forwarded through each queue in each interface.
(i.e. show mls qos ....)
Any ideas?
Even more: any SNMP MIBs you may know?
I know we can see counters for different DSCP values and we can also see mappings between DSCP and outgoing queues (which are not very clear to me). Is there something that clearly shows which traffic is really using the high priority queue and which is not?
Thanks

Thanks for the reply.. but on my 6509 with ios 12.2(17d)SXB10, theres no option for stats - only one is for stats export.. why is that ?? How to get stats ??
to0#sho mls qos ?
aggregate-policer aggregate-policer keyword
ip ip keyword
last last keyword
mac mac keyword
maps maps keyword
module show entries in module
mpls mpls keyword
protocol protocol passthrough information
statistics-export QOS Statistics export
| Output modifiers

Cat. 3750 QoS Queue statistics

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