[c-nsp] QoS Cisco Serie 800 and 1800

[Dave Cardwell]

Hi Alejandro,

If you can run 15.0 code you may want try HQF, rather then CBWFQ.

There is a good description at the link below:
http://blog.ioshints.info/2009/11/first-hqf-impressions-excellent-job.html?utm_source=feedburner&utm_medium=RSS&utm_campaign=IOS+hints+Feed

Hope it helps,
Dave

On Fri, Nov 20, 2009 at 5:51 PM, Alejandro Selios <aselios at gmail.com> wrote:
> Thanks Clue for your quick answer.
>
> In the original mail I didn't mention it, but I applied the service-policy
> to the PVC like you said. (Below attach the complete configuration for both
> cases).
>
> Another issue is that Cisco's 800 and 1800 series routers only have 2 level
> of prioritization. Cisco's routers allow to configure a priority queue and
> CBWFQ (class base weighted fair queue) but does not has the flexibly to
> specify a scheduler policy or any other queuing policies.
>
> I think that weighted fair queue will leave as dead end, I think the way to
> follow is a strict priority queuing with a customizable scheduler policy.
> I'm looking for a way to do that in Cisco's routers.
>
> I'll appreciate any help you can give me.
>
>
> Cisco 878/877
> --------------------------------------
> class-map match-all GOLD
>  match access-group name GOLD_ACL
> class-map match-all SILVER
>  match access-group name SILVER_ACL
>
>
> policy-map QoS_POLICY
>  class GOLD
>  priority percent 25
>  police cir percent 25 pir percent 25
>  set dscp ef
>  class SILVER
>  set dscp af41
>   bandwidth percent 50
>   shape average percent 75
>  class class-default
>   fair-queue
>   set dscp af12
>   bandwidth percent 25
>
> interface ATM0
>  no ip address
>  load-interval 30
>  no atm ilmi-keepalive
>  max-reserved-bandwidth 100
> !
> interface ATM0.35 point-to-point
>  description INTERFAZ DE ACCESO
>  ip address x.x.x.x 255.255.255.254
>  atm route-bridged ip
>  pvc 0/35
>  vbr-nrt 576 576
>  oam-pvc 0
>  encapsulation aal5snap
>  service-policy output QoS_POLICY
>
>
>
> Cisco 1841
> --------------------------------------
>
> class-map match-all GOLD
>  match access-group name GOLD_ACL
> class-map match-all SILVER
>  match access-group name SILVER_ACL
>
>
> policy-map QoS_POLICY
>  class GOLD
>  priority percent 25
>  police cir percent 25 pir percent 25
>  set dscp ef
>  class SILVER
>  set dscp af41
>   bandwidth percent 50
>   shape average percent 75
>  class class-default
>   fair-queue
>   set dscp af12
>   bandwidth percent 25
>
> policy-map SHAPER
>  class class-default
>    shape average 1000000
>  service-policy QoS_POLICY
> !
> !
> !
> interface FastEthernet0/0
>  description INTERFAZ DE ACCESO
>  no ip address
>  load-interval 30
>  duplex auto
>  speed auto
> !
> interface FastEthernet0/0.100
>  encapsulation dot1Q 100
>  ip address x.x.x.x 255.255.255.252
>  service-policy output SHAPER
>
>
>
> Thanks,
>
>
>
>
>
>
> 2009/11/20 Clue Store <cluestore at gmail.com>
>
>> Hi Alejandro,
>>
>> If you're doing this with xDSL, you will have to apply the service-policy
>> to the PVC for outgoing to make it work. Here's an example of what I use. I
>> know your class-maps and policy-maps are different, but you should be able
>> to get the point.
>>
>> class-map match-any VoIP
>>  match ip rtp 16384 16383
>>  match access-group name VoicePorts
>>
>> policy-map Voice
>>  class VoIP
>>   priority percent 75
>>
>>  class class-default
>>   fair-queue
>>
>>
>> interface ATM0.1 point-to-point
>>  pvc 1/100
>>   vbr-rt 384 384
>>   tx-ring-limit 3
>>   service-policy output Voice
>>
>>
>> ip access-list extended VoicePorts
>>  permit udp any host x.x.x.x range 22026 62025
>>  permit udp any host x.x.x.x range 22026 62025
>>
>>
>>
>>
>> HTH,
>> Clue
>>
>> On Fri, Nov 20, 2009 at 9:26 AM, Alejandro Selios <aselios at gmail.com>wrote:
>>
>>> Hi,
>>>
>>> I want to configure QoS on a Cisco's 800 and 1800 series router and I
>>> couldn't make it work the way I want. I've configured three classes of
>>> service called GOLD, SILVER and BRONZE, designed for low latency, low loss
>>> and data respectively.
>>>
>>> * I want the GOLD class to have a maximum bandwidth of 25%, even if there
>>> is
>>> traffic in the other classes.
>>>
>>> * The SILVER class has a minimum bandwidth of 50% and, if there's no
>>> traffic
>>> in the GOLD queue, I want this class to take the available bandwidth which
>>> is not used by the GOLD class. Thats means that the SILVER class has a 50%
>>> of assured bandwidth and can increase to a maximum of 75% of the total
>>> bandwidth.
>>>
>>> * The BRONZE class has no assured bandwidth and can only take the
>>> bandwidth
>>> which is not used for the other classes.
>>>
>>> The problem is that with Cisco's QoS tools I have not reached the desired
>>> goal. I have tried with different configurations and IOS and I couldn't
>>> get
>>> any successful result . Below I attach the policy configuration that I
>>> have
>>> tried (just to give you an example).
>>>
>>> Is there any way in which I can achieve the behavior that was described
>>> above?.
>>>
>>> Thanks in advance.
>>>
>>>
>>> Standard Configuration
>>> -------------------------------------
>>>
>>> policy-map QoS_POLICY
>>>  class GOLD
>>>   priority percent 25
>>>   police cir percent 25 pir percent 25
>>>   set dscp ef
>>>  class SILVER
>>>   set dscp af41
>>>    bandwidth percent 50
>>>    shape average percent 75
>>>  class class-default
>>>    fair-queue
>>>    set dscp af12
>>>    bandwidth percent 25
>>>
>>>
>>>
>>>
>>> Hierarchical Configuration
>>> ---------------------------------------------
>>> policy-map GOLD+SILVER
>>>  class GOLD
>>>    priority percent 33
>>>    police rate percent 33
>>>  class class-default
>>>    fair-queue
>>>
>>> policy-map QOS
>>>  class GOLD+SILVER
>>>    shape average percent 75
>>>    bandwidth percent 75
>>>    service-policy GOLD+SILVER
>>>  class class-default
>>>    fair-queue
>>>
>>>
>>> Note: This configuration was applied in a subinterface (xDSL, 802.1q
>>> ethernet) and for the outgoing traffic.
>>> _______________________________________________
>>> cisco-nsp mailing list  cisco-nsp at puck.nether.net
>>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>>> archive at http://puck.nether.net/pipermail/cisco-nsp/
>>>
>>
>>
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