Apply QoS on Interface

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Apr 22nd, 2010
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I want to apply the QoS service on the ATM interface, but fail.


Router#

interface ATM0/1/0

bandwidth 2048

no ip address

scrambling-payload

atm vc-per-vp 1024

no atm auto-configuration

no atm ilmi-keepalive

no atm address-registration

no atm ilmi-enable

!

interface ATM0/1/0.1 point-to-point

ip address 192.168.100.1 255.255.255.252

pvc 1/777

  oam-pvc manage 0

  oam retry 3 5 1

  oam ais-rdi 10 3

  encapsulation aal5nsap

!

Router(config)#interface ATM0/1/0

Router(config-if)#service-policy output WAN

   GTS: Not supported on this interface

Router(config-if)#interface ATM0/1/0.1 point-to-point

Router(config-subif)#service-policy output WAN

GTS: Not supported on this interface

I am not sure why I am not able to apply the service policy on the ATM interface. Please help.

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John Blakley Thu, 04/22/2010 - 13:58
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It's probably a configuration that you have in your policy map. Can you post the configuration of that?


HTH,

John

ronaldobf Thu, 04/22/2010 - 20:36
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You will have to apply it to the VC.


Example:


Running-config of the interface:


interface ATM0/1/0.1 point-to-point

ip address 192.168.100.1 255.255.255.252

pvc 1/777

  oam-pvc manage 0

  oam retry 3 5 1

  oam ais-rdi 10 3

  encapsulation aal5nsap

  service-policy output WAN


To do so:


Router(config-if)#interface ATM0/1/0.1 point-to-point

Router(config-subif)#pvc 1/777

Router(config-if-atm-vc)#service-policy output WAN




A good source:


http://www.digitalvideoheadend.com/en/US/tech/tk39/tk824/technologies_tech_note09186a00800d76b5.shtml


I hope this helps!


Regards,

kzhen Fri, 04/23/2010 - 08:20
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Hi Mikael,


Here is the show atm vc on the router


Router#show atm pvc


Interface  VCD/Name   VPI   VCI   Type   Encaps   SC    Peak Kbps   Avg/Min  Kbps   Burst Cells   Sts

0/1/0.1     1                    1    777  PVC    SNAP   UBR    1920                                                        UP


should I apply as the followings


PVC1/777

  vbr-nrt 1920 1920 1

  service-policy output WAN



Thank you

mlund Fri, 04/23/2010 - 07:19
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Hi


You haven't configured the vc type, and therefore the router is using it's default, wich is ubr(UnsspecifiedBitRate). You can verify this with "show atm vc".

Because the bitrate is unspecified You can't guarantee any speed.


Try to change to a vbr-rt or vbr-nrt and see if that solves the problem.


Mikael

kzhen Fri, 04/23/2010 - 11:23
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Hi Mikael,


I applied the change on the router


pvc 1/777

vbr-nrt 1920 1920 1

service-policy output WAN


It didn't show the "servie-policy output WAN" under pvc 1/777 and I didn't get any output from the " show policy-map int atm0/1/0"


Thank you

ronaldobf Fri, 04/23/2010 - 13:50
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You applied it to the pvc under the subinterface. You issued a command for the physical interface only.


sh policy-map interface ATM0/1/0.1


or


sh policy-map interface ATM0/1/0.1 vc 1/777 [there are several subcommands like outbound, inbound, pvc, etc]

mlund Mon, 04/26/2010 - 04:16
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Hi


As ronaldobf pointed out, You have to do "sh policy-map interface ATM0/1/0.1"


Here is an example from our routers


interface ATM0/0/IMA0.1 point-to-point
ip address 10.x.x.x 255.255.255.252
pvc 0/35
  vbr-rt 9216 4096 1842
  service-policy output Core

!

router#sh policy-map interface ATM0/0/IMA0.1
ATM0/0/IMA0.1: VC 0/35 -

  Service-policy output: Core

    Class-map: Real-Time (match-any)
      5153073 packets, 454363997 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: ip dscp cs5 (40) ef (46)
        5153073 packets, 454363997 bytes



/Mikael

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