05-10-2013 02:12 AM - edited 03-07-2019 01:17 PM
Ok, I can see that my traffic is hitting the right queues, but it doesnt seem to be taking priority over other traffic, either that or it is being limited somewhere. I am marking video with dscp 34, voice with dscp 46 and control with 24. I have done several test calls using 2 video conferencing units. I have applied QoS on all devices in the path. The units I am testing on are only seperated by 1 WAN link. I have looked at my queues and thresholds etc, but I cant understand what the hell is going on. I am doing file transfers to top the link out and on the video conferencing unit its self, I am seeing a lot of receive packet loss and a very small amount of transmit packet loss. Can anyone see from my config what might be going wrong with the queues and thresholds etc?
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 34 40 41 42 43 44 45 46
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 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
class-map match-any voice
match ip dscp 46
class-map match-any video
match ip dscp 34
class-map match-any control
match ip dscp 24
class-map match-any control-VoIP
match ip dscp 26
policy-map vvc-map
class voice
trust dscp
class video
trust dscp
class control
trust dscp
class control-VoIP
trust dscp
****Interface config****
priority-queue out
service-policy input vvc-map
05-10-2013 06:54 AM
Mark,
Try enabling ingress Q2 as the priority Q
!
mls qos srr-queue input priority-queue 2 bandwidth 30
! Q2 is enabled as a strict-priority ingress queue with 30% BW
!
From the link I sent you before
Cisco suggest that you look at your q-ing and map your selected cos & dscp values
!
! This section configures the ingress queues
!
mls qos srr-queue input priority-queue 2 bandwidth 30
! Q2 is enabled as a strict-priority ingress queue with 30% BW
!
C3750-E(config)#mls qos srr-queue input bandwidth 70 30
! Q1 is assigned 70% BW via SRR shared weights
! Q2 SRR shared weight is ignored (as it has been configured as a PQ)
!
mls qos srr-queue input buffers 90 10
! Q1 is assigned 90% of queuing buffers and Q2 (PQ) is assigned 10%
!
mls qos srr-queue input threshold 1 80 90
! Q1 thresholds are configured at 80% (Q1T1) and 90% (Q1T2)
! Q1T3 is implicitly set at 100% (the tail of the queue)
! Q2 thresholds are all set (by default) to 100% (the tail of Q2)
! This section configures ingress CoS-to-Queue mappings (if required)
!
mls qos srr-queue input cos-map queue 1 threshold 1 0 1 2
! CoS values 0, 1 and 2 are mapped to Q1T1
!
mls qos srr-queue input cos-map queue 1 threshold 2 3
! CoS value 3 is mapped to ingress Q1T2
!
mls qos srr-queue input cos-map queue 1 threshold 3 6 7
! CoS values 6 and 7 are mapped to ingress Q1T3
!
mls qos srr-queue input cos-map queue 2 threshold 1 4 5
! CoS values 4 and 5 are mapped to ingress Q2 (the PQ)
! This section configures ingress DSCP-to-Queue Mappings
!
mls qos srr-queue input dscp-map queue 1 threshold 1 0 8 10 12 14
! DSCP DF, CS1 and AF1 are mapped to ingress Q1T1
!
mls qos srr-queue input dscp-map queue 1 threshold 1 16 18 20 22
! DSCP CS2 and AF2 are mapped to ingress Q1T1
!
mls qos srr-queue input dscp-map queue 1 threshold 1 26 28 30 34 36 38
! DSCP AF3 and AF4 are mapped to ingress Q1T1
!
mls qos srr-queue input dscp-map queue 1 threshold 2 24
! DSCP CS3 is mapped to ingress Q1T2
!
mls qos srr-queue input dscp-map queue 1 threshold 3 48 56
! DSCP CS6 and CS7 are mapped to ingress Q1T3 (the tail of Q1)
!
mls qos srr-queue input dscp-map queue 2 threshold 3 32 40 46
! DSCP CS4, CS5 and EF are mapped to ingress Q2T3 (the tail of the PQ)
!
Then read further on for output Qs
Regards,
Alex.
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