[c-nsp] QoS on 837

[Félix Izquierdo]

Try configuring "tx-ring-limit" at the PVC with a low value.


Cheers.

Félix


Voll, Scott wrote:

> I would like to know if I did something on my QoS wrong.  Data is over
> writing my Voice Traffic.
> 
> DSL is 256/256
> 
> IP Phone - 837 - DSL / ATM - 6509 - IP Phone
> 
> 837 running 12.3(8)YG2
> 6509 running 12.2(18)SXE1
> 
> 837 config:
> 
> class-map match-all VoIP-ctrl
>  match ip dscp af31
>  match ip precedence 3
> class-map match-all VoIP
>  match ip dscp ef
>  match ip precedence 5
> !
> !
> policy-map QoSWAN
>  class VoIP
>   priority 160
>  class VoIP-ctrl
>   bandwidth 16
>  class class-default
>   fair-queue
> !
> interface Ethernet0
>  description DSL
>  ip address 10.220.2.1 255.255.255.0
> hold-queue 100 out
> !
> interface ATM0
>  no ip address
>  no atm ilmi-keepalive
>  dsl operating-mode auto
> !
> interface ATM0.32 point-to-point
>  ip address 172.21.1.2 255.255.255.252
>  atm route-bridged ip
>  pvc 0/32
>   vbr-nrt 256 256
>   encapsulation aal5snap
>   service-policy output QoSWAN
> 
> 6509 config
> 
> class-map match-all VoIP-ctrl
>   match access-group 151
> 
> class-map match-any VoIP
>   match access-group 150
>   match ip precedence 5
> 
> policy-map DSL_Voice
>   class VoIP
>     priority 160
>   class VoIP-ctrl
>     bandwidth 16
>   class class-default
>     fair-queue
> 
> interface ATM4/0/0.232 point-to-point
>  description DSL to Scott Voll
>  bandwidth 256
>  ip address 172.21.1.1 255.255.255.252
>  atm route-bridged ip
>  service-policy output DSL_Voice
>  pvc 2/32
>   vbr-nrt 256 256
>   tx-ring-limit 3
>   encapsulation aal5snap
> 
> access-list 150 remark VoIP-Voice
> access-list 150 permit ip any any precedence critical
> access-list 150 permit ip any any dscp ef
> access-list 151 remark VoIP-control
> access-list 151 permit ip any any precedence flash
> access-list 151 permit ip any any dscp af31
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