[cisco-bba] To Shape or Police DSL Subscribers ??

[Gerald Krause]

Hi Tony,

my initial problem was the missing parent shaper in my config (like Arie
observed). Right after changing the relative 'percent' value in to an
fixed rate my simple (non-HQoS) policy became active on the
Virtual-Interface.
I hope I can now enable some more complex (H)QoS configs too and your
example below looks like an good template for me. Thank you for the
response! I'll going to try it out now...

--
Gerald

Am 17.02.2011 12:37, schrieb Tony:
> Hi Gerald,
> 
> --- On Thu, 17/2/11, Gerald Krause <gk at ax.tc> wrote:
> 
>> From: Gerald Krause <gk at ax.tc>
>> Subject: Re: [cisco-bba] To Shape or Police DSL Subscribers ??
>> To: cisco-bba at puck.nether.net
>> Received: Thursday, 17 February, 2011, 5:49 AM
>>
>> Sorry for dig out this old thread but
>> I'am in the process to test some
>> QoS features on our LNS and stumbled upon this post :-).
>>
>> My question - what IOS version support such QoS policies to
>> be applied
>> to individual users/sessions from RADIUS on a NPE-G2 LNS
>> and what is the
>> difference between this 2 features:
>>
>>   1) "QoS: Per-Session Shaping and Queuing on LNS "
>>      Cisco FN: supported in 12.2SB but
>> not in 12.2SRE
>>
>>   2) "Per-User QoS via AAA Policy Name"
>>      Cisco FN: supported in 12.2SB and
>> 12.2SRE
>>
> 
> I don't know about what features are supported in which IOS version and how exactly you should use them, but I can tell you what we are doing that works, which might help you. There are probably other ways to do the same thing, this is what works for us.
> 
> We are running 12.2(33)SRD1 on 7204's. I can't see why this won't also work on SRE.
> 
> On the box we have QoS policies configured like this one (this is for a link that is primarily used for VoIP, but also has some file replication that is limited fairly harshly to avoid it affecting the VoIP)
> 
> !
> policy-map xyz-512k-voip-shaper-child
>   class xyz-voip-traffic
>     priority 400
>   class class-xyz-replication
>    police 64000 3000 conform-action transmit exceed-action drop
> !
> policy-map xyz-512k-voip-shaper-parent
>   class class-default
>     shape average 460000
>    service-policy xyz-512k-voip-shaper-child
> !
> 
> On the RADIUS we have this Cisco-AVPair being returned:
> 
> Cisco-AVPair = "ip:sub-qos-policy-out=xyz-512k-voip-shaper-parent"
> 
> On the LNS it looks like this:
> 
> #show run int virtual-access 1592
> !
> interface Virtual-Access1592
>  bandwidth 155520
>  no ip address
>  ip load-sharing per-packet
>  ip ospf mtu-ignore
>  load-interval 30
>  no clns route-cache
> end
> 
> 
> #show policy-map int virtual-access 1592
>  Virtual-Access1592
>  SSS session identifier 476 -
> 
>   Service-policy output: xyz-512k-voip-shaper-parent
> 
>     Class-map: class-default (match-any)
>       13107796 packets, 1644703212 bytes
>       30 second offered rate 1000 bps, drop rate 0000 bps
>       Match: any
>         13107797 packets, 1644703280 bytes
>         30 second rate 1000 bps
>       Queueing
>       queue limit 115 packets
>       (queue depth/total drops/no-buffer drops) 0/0/0
>       (pkts output/bytes output) 13103036/1706908189
>       shape (average) cir 460000, bc 1840, be 1840
>       target shape rate 460000
> 
>       Service-policy : xyz-512k-voip-shaper-child
> 
>         queue stats for all priority classes:
>           Queueing
>           queue limit 100 packets
>           (queue depth/total drops/no-buffer drops) 0/0/0
>           (pkts output/bytes output) 2304070/314898450
> 
>         Class-map: xyz-voip-traffic (match-all)
>           2304068 packets, 246793802 bytes
>           30 second offered rate 0000 bps, drop rate 0000 bps
>           Match: access-group name xyz-voip-acl
>           Priority: 400 kbps, burst bytes 10000, b/w exceed drops: 0
> 
> 
>         Class-map: class-xyz-replication (match-all)
>           3974924 packets, 513208591 bytes
>           30 second offered rate 0000 bps, drop rate 0000 bps
>           Match: access-group name xyz-replication
>           police:
>               cir 64000 bps, bc 3000 bytes
>             conformed 3970110 packets, 510621222 bytes; actions:
>               transmit
>             exceeded 4815 packets, 2587369 bytes; actions:
>               drop
>             conformed 0000 bps, exceed 0000 bps
> 
>         Class-map: class-default (match-any)
>           6828803 packets, 884700887 bytes
>           30 second offered rate 1000 bps, drop rate 0000 bps
>           Match: any
>             6828804 packets, 884700887 bytes
>             30 second rate 1000 bps
> 
>           queue limit 15 packets
>           (queue depth/total drops/no-buffer drops) 0/0/0
>           (pkts output/bytes output) 10798966/1706908189
> 
> 
> You will notice that you can't see the QoS settings that have been applied using a "show run int" command, but you can see with "show policy-map".
> 
> Hope this helps.
> 
> 
> regards,
> Tony Miles.
> 
> 
> 
> 
>       
>