[c-nsp] QoS

[Phil Mayers]

On 03/02/11 17:20, Michael Crilly wrote:
> After some playing around, I am getting this output from the 'mls qos
> int gi0/2 stat' command:

I don't see you using the "service-policy" at interface level, so I'm 
not sure if and where your policy-map is matching?


We have QoS on Catalyst 3550s setup; we see things like this:

#sh mls qos interface g0/1 statistics
GigabitEthernet0/1
Ingress
   dscp: incoming   no_change  classified policed    dropped (in bytes)
     0 : 3987235380 2343274394 2463708897 0          0
     8 : 1729277702 0          0          0          0
     16: 1531195619 0          0          0          0
     26: 300529872  0          0          0          0
     32: 1367348968 0          0          0          0
     46: 2424106981 1924373538 1490328499 0          0
     48: 711185226  0          0          0          0
     56: 4172438264 0          0          0          0
Others: 742230244  0          153928336  0          0
Egress
   dscp: incoming   no_change  classified policed    dropped (in bytes)
     0 : 991756436     n/a       n/a      0          0
     8 : 0             n/a       n/a      0          0
     16: 0             n/a       n/a      0          0
     26: 0             n/a       n/a      0          0
     32: 0             n/a       n/a      0          0
     46: 1384502261    n/a       n/a      0          0
     48: 75988175      n/a       n/a      0          0
     56: 58312830      n/a       n/a      0          0
Others: 79616         n/a       n/a      0          0

WRED drop counts:
   qid  thresh1    thresh2   FreeQ
    1 : 0          0         1024
    2 : 0          0         1024
    3 : 0          0         1024
    4 : 0          0         1024

...and our config is something like:

mls qos map cos-dscp 0 8 16 26 32 46 48 56
mls qos
!
class-map match-all hi-priority
   match access-group name hi-priority
class-map match-all ALL
   match access-group name ALL
!
policy-map CORE-in
   class hi-priority
    set dscp ef
   class ALL
    set dscp default
!
interface GigabitEthernet0/1
  description core
  mls qos monitor dscp 0 8 16 26 32 46 48 56
  service-policy input CORE-in
!
interface FastEthernet0/7
  description edge - congested link!
  mls qos trust dscp
  mls qos monitor dscp 0 8 16 26 32 46 48 56
  wrr-queue cos-map 1 0 1
  wrr-queue cos-map 2 2 4
  wrr-queue cos-map 3 3 6 7
  wrr-queue cos-map 4 5
  priority-queue out