QoS Traffic Shaping not working (but policing does work)

[jprine]

I have been through every forum on the net for this on and am getting no where...PLEASE HELP!


Here is my situation,

I have lots of PPPoE users that get Virtual Access interfaces created upon login based on a virtual template. I need to traffic shape them. I know how to get it to work on an individual basis, because the policing within a service policy works fine. As soon as i change it to shaping it leaves things wide open.


I really dont care how it gets done, I just need to be able to specify a speed to be traffic shaped and apply that to a virtual template. I need to limit speeds on the download and upload, i understand that the upload i will use the policing, but the download i need it to smooth out the flow and be traffic shaped, not policed.


Here is my Policies and classes:

***

policy-map CHILD
class class-default
bandwidth 1650
policy-map PARENT
class class-default
shape average 1650000
service-policy CHILD
****

Here is my Virtual Template:

****

interface Virtual-Template8
description pppoe-auth-FTTH
ip unnumbered FastEthernet0/0
ip access-group subs-in-FTTH in
ip mtu 1493
timeout absolute 6120 0
peer default ip address pool FTTH-POOL
ppp authentication pap pppoe-auth
ppp authorization pppoe-auth
ppp timeout idle 84600
service-policy output PARENT


****

Here is the Virtual Access Interface that gets created:

***

7200-ADSL#sho interfaces virtual-access 2.32 configuration
Virtual-Access2.32 is a PPP over Ethernet link (sub)interface

Derived configuration : 284 bytes
!
interface Virtual-Access2.32
ip unnumbered FastEthernet0/0
ip access-group subs-in-FTTH in
timeout absolute 6120 0
peer default ip address pool FTTH-POOL
ppp authentication pap pppoe-auth
ppp authorization pppoe-auth
ppp timeout idle 84600
service-policy output PARENT
end

***


AND HERE IS MY PROBLEM!!!

****

7200-ADSL#sho policy-map interface virtual-access 2.32
Virtual-Access2.32

Service-policy output: PARENT

Class-map: class-default (match-any)
279116 packets, 369905269 bytes
5 minute offered rate 8990000 bps, drop rate 0 bps
Match: any
Traffic Shaping
Target/Average Byte Sustain Excess Interval Increment
Rate Limit bits/int bits/int (ms) (bytes)
1650000/1650000 9900 39600 39600 24 4950

Adapt Queue Packets Bytes Packets Bytes Shaping
Active Depth Delayed Delayed Active
- 0 59 3501 0 0 no

Service-policy : CHILD

Class-map: class-default (match-any)
279116 packets, 369905269 bytes
5 minute offered rate 8990000 bps, drop rate 0 bps
Match: any
Queueing
Output Queue: Conversation 73
Bandwidth 1650 (kbps)Max Threshold 64 (packets)
(pkts matched/bytes matched) 0/0
(depth/total drops/no-buffer drops) 0/0/0


****


The results i am getting is unrestrcited throughput, i am seeing about 40mb of throughput when the target is to limit to 1.65MB. As you can see from the output the PARENT class is seeing 279116 packets, but the shaper only saw 59. In all the examples i see on the internet these two numbers should be the same. Why is the shaper not acting on all the traffic crossing that class/policy?


Hardware/IOS:

Cisco IOS Software, 7200 Software (C7200-IK9SU2-M), Version 12.4(12), RELEASE SOFTWARE (fc1)


Thanks for any Input!

Joel

 

[leedsit]

If I remember rightly(a while ago) do qos tools such as shaping, policing etc not come into force unless there is congestion on the link. I.E Tx Ring (Hardware Queue) is full?

So your configuration will not come into force until congestion is met?

Thanks, Lee

LEEroy
MCNE6,CCNP,CWNA,CCSA,Project+