09-20-2012 10:18 PM - edited 03-07-2019 09:00 AM
Hi all!
please help me in understanding of "mls qos interface stat"
I took a switch and connected it to my LAN
switch is 2960 with LanBase image and PoE
on it I have 3 interfaces in up state - 2 interfaces with cisco phones (6921 and 9951) nad 1 interface as uplink
here is its configuration
interface FastEthernet0/1
switchport mode access
switchport voice vlan 555
mls qos trust device cisco-phone
spanning-tree portfast
!
interface FastEthernet0/2
switchport mode access
switchport voice vlan 555
mls qos trust device cisco-phone
spanning-tree portfast
!
...
interface GigabitEthernet0/1
switchport mode trunk
priority-queue out
mls qos trust dscp
!
I made just a call from one 9951 towards
I have no other devices on switch. so I have only voip traffic.
but why do I see the next stat screen?
test2960#sh mls qos int f0/1 sta
FastEthernet0/1 (All statistics are in packets)
dscp: incoming
-------------------------------
0 - 4 : 0 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 48
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 3064 0 4 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 : 1512498 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 : 729 0 0 0 0
45 - 49 : 0 0 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 : 27 0 0 48 0
5 - 7 : 3064 4 0
cos: outgoing
-------------------------------
0 - 4 : 1581099 0 0 0 0
5 - 7 : 729 0 0
output queues enqueued:
queue: threshold1 threshold2 threshold3
-----------------------------------------
queue 0: 729 0 0
queue 1: 1569605 425 2043
queue 2: 0 0 0
queue 3: 0 0 11072
output queues dropped:
queue: threshold1 threshold2 threshold3
-----------------------------------------
queue 0: 0 0 0
queue 1: 0 0 0
queue 2: 0 0 0
queue 3: 0 0 0
Policer: Inprofile: 0 OutofProfile: 0
and
test2960#sh mls qos int f0/2 sta
FastEthernet0/2 (All statistics are in packets)
dscp: incoming
-------------------------------
0 - 4 : 2 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 0 171
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 5689 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 : 2095831 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 14
25 - 29 : 0 0 0 0 0
30 - 34 : 0 0 0 0 0
35 - 39 : 0 0 0 0 0
40 - 44 : 3348 0 0 0 0
45 - 49 : 0 0 0 1 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 : 56 0 0 171 0
5 - 7 : 5689 0 0
cos: outgoing
-------------------------------
0 - 4 : 2178523 0 0 14 0
5 - 7 : 3348 1 0
output queues enqueued:
queue: threshold1 threshold2 threshold3
-----------------------------------------
queue 0: 3348 0 0
queue 1: 2164282 590 2397
queue 2: 14 0 0
queue 3: 1 0 13653
output queues dropped:
queue: threshold1 threshold2 threshold3
-----------------------------------------
queue 0: 0 0 0
queue 1: 0 0 0
queue 2: 0 0 0
queue 3: 0 0 0
Policer: Inprofile: 0 OutofProfile: 0
All incoming traffic is as I expect - DSCP 48, CoS 5
but all outgoing traffic???
Should notice I have next statements in config too:
mls qos map cos-dscp 0 8 16 24 32 46 48 56
mls qos
And I use CUCM 7.1 (if it is important)
Please help me to understand!!!
Solved! Go to Solution.
09-20-2012 11:08 PM
Hello,
DSCP 46 suppose to map to COS 5, which is recommended.
Try this on ur uplink
interface GigabitEthernet0/1
switchport mode trunk
priority-queue out
mls qos trust coz
Because this is a layer, 2 interface.
Check this attached document and let me know if had any question
Please rate this information is helpful.
thanks
09-20-2012 11:08 PM
Hello,
DSCP 46 suppose to map to COS 5, which is recommended.
Try this on ur uplink
interface GigabitEthernet0/1
switchport mode trunk
priority-queue out
mls qos trust coz
Because this is a layer, 2 interface.
Check this attached document and let me know if had any question
Please rate this information is helpful.
thanks
09-20-2012 11:33 PM
Thanks for the doc Amrinder, actually i was looking to understand the basic wherein you have provided it.
regards
srikanth
09-20-2012 11:39 PM
Hi Srikanth ,
ur welcome mate.
glad i help u.
cheers
09-25-2012 05:33 AM
hi guys!
thanx for a great article, Amrinder!
but I still have questions.
1. "DSCP to QoS map" - what is it?
2. where can I read smth about "Internal DSCP"?
09-25-2012 01:51 PM
Hi Srikanth ,
You can use see blow its showing both cos to dscp and dscp to cos
Network-Test#sh mls qos maps cos-dscp
Cos-dscp map:
cos: 0 1 2 3 4 5 6 7
--------------------------------
dscp: 0 8 16 24 32 46 48 56
Network-Test#sh mls qos maps dscp-cos
Dscp-cos map:
d1 : d2 0 1 2 3 4 5 6 7 8 9
---------------------------------------
0 : 00 00 00 00 00 00 00 00 01 01
1 : 01 01 01 01 01 01 02 02 02 02
2 : 02 02 02 02 03 03 03 03 03 03
3 : 03 03 04 04 04 04 04 04 04 04
4 : 05 05 05 05 05 05 05 05 06 06
5 : 06 06 06 06 06 06 07 07 07 07
6 : 07 07 07 07
as you can see cos 5 mapped to DSCP 46
Cos is layer 2 marking and DSCP is layer 3. if you enable Auto Qos on switch it will automatically create these table and handle the traffic.
http://www.ciscopress.com/articles/article.asp?p=170743&seqNum=3
check this link for more detail.
please rate if this helps
thanks
09-25-2012 11:02 PM
Hello, Amrinder!
please correct me if I'm wrong.
internal DSCP = ingress DSCP if I have "mls qos trust dscp"
internal DSCP is taken from cos-to-dscp map if I have "mls qos trust cos"
egress cos is taken from dscp-to-cos table, where dscp=internal dscp
thanks
09-26-2012 01:24 AM
hello mate,
as far i think you r correct.
check this link
thanks
09-26-2012 01:52 AM
thanx a lot. but this is a brocade cli manual not cisco... is it good idea to use it?
09-26-2012 01:58 AM
oh sorry my bad bit tired now, check this one
scroll down to dscp section.
thanks
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