Bandwidth & shape average combined












1















Here is a class-map that our provider has configured :



class ce_ef_output

  police 2600000 

 class ce_af1_output

  police 5360000 

 class class-default

  bandwidth 592

  class class-default

  shape average 8890000


How do you explain the "bandwidth 592" with the "shape average 8890000" command ?
Isn't the bandwidth command going to limit traffic at 592 Kbps, and shape average at 8.8 Mbps (let's ignore Bc/Be and potential bursts) ?



How does it make sense to use both at the same time ?






bandwidth







share|improve this question



























    1















    Here is a class-map that our provider has configured :



    class ce_ef_output
    
  police 2600000 
    
 class ce_af1_output
    
  police 5360000 
    
 class class-default
    
  bandwidth 592
    
  class class-default
    
  shape average 8890000


    How do you explain the "bandwidth 592" with the "shape average 8890000" command ?
    Isn't the bandwidth command going to limit traffic at 592 Kbps, and shape average at 8.8 Mbps (let's ignore Bc/Be and potential bursts) ?



    How does it make sense to use both at the same time ?






    bandwidth







    share|improve this question

























      1












      1








      1








      Here is a class-map that our provider has configured :



      class ce_ef_output
      
  police 2600000 
      
 class ce_af1_output
      
  police 5360000 
      
 class class-default
      
  bandwidth 592
      
  class class-default
      
  shape average 8890000


      How do you explain the "bandwidth 592" with the "shape average 8890000" command ?
      Isn't the bandwidth command going to limit traffic at 592 Kbps, and shape average at 8.8 Mbps (let's ignore Bc/Be and potential bursts) ?



      How does it make sense to use both at the same time ?






      bandwidth







      share|improve this question














      Here is a class-map that our provider has configured :



      class ce_ef_output
      
  police 2600000 
      
 class ce_af1_output
      
  police 5360000 
      
 class class-default
      
  bandwidth 592
      
  class class-default
      
  shape average 8890000


      How do you explain the "bandwidth 592" with the "shape average 8890000" command ?
      Isn't the bandwidth command going to limit traffic at 592 Kbps, and shape average at 8.8 Mbps (let's ignore Bc/Be and potential bursts) ?



      How does it make sense to use both at the same time ?






      bandwidth




      bandwidth






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 8 hours ago









      user53632user53632

      1334




      1334






















          1 Answer
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          Bandwidth defines the minimum available bandwidth guaranteed during periods of congestion, this means, that if your link is congested and fully utilized, that class will still have reserved 592 Kbps.



          Both the shape and police commands restrict the output rate to a maximum Kbps value. Importantly, neither mechanism provides a minimum bandwidth guarantee during periods of congestion.



          Without knowing the full policy maps and group policies we can only speculate why they have decided to configure it like this and that is off topic here.



          Technically it means, that the default class, typical also know as best effort, has a maximum of 8.8 Mbps with a guaranteed minimum of 592 Kbps.






          share|improve this answer

























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            1 Answer
            1






            active

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            active

            oldest

            votes






            active

            oldest

            votes









            3














            Bandwidth defines the minimum available bandwidth guaranteed during periods of congestion, this means, that if your link is congested and fully utilized, that class will still have reserved 592 Kbps.



            Both the shape and police commands restrict the output rate to a maximum Kbps value. Importantly, neither mechanism provides a minimum bandwidth guarantee during periods of congestion.



            Without knowing the full policy maps and group policies we can only speculate why they have decided to configure it like this and that is off topic here.



            Technically it means, that the default class, typical also know as best effort, has a maximum of 8.8 Mbps with a guaranteed minimum of 592 Kbps.






            share|improve this answer






























              3














              Bandwidth defines the minimum available bandwidth guaranteed during periods of congestion, this means, that if your link is congested and fully utilized, that class will still have reserved 592 Kbps.



              Both the shape and police commands restrict the output rate to a maximum Kbps value. Importantly, neither mechanism provides a minimum bandwidth guarantee during periods of congestion.



              Without knowing the full policy maps and group policies we can only speculate why they have decided to configure it like this and that is off topic here.



              Technically it means, that the default class, typical also know as best effort, has a maximum of 8.8 Mbps with a guaranteed minimum of 592 Kbps.






              share|improve this answer




























                3












                3








                3







                Bandwidth defines the minimum available bandwidth guaranteed during periods of congestion, this means, that if your link is congested and fully utilized, that class will still have reserved 592 Kbps.



                Both the shape and police commands restrict the output rate to a maximum Kbps value. Importantly, neither mechanism provides a minimum bandwidth guarantee during periods of congestion.



                Without knowing the full policy maps and group policies we can only speculate why they have decided to configure it like this and that is off topic here.



                Technically it means, that the default class, typical also know as best effort, has a maximum of 8.8 Mbps with a guaranteed minimum of 592 Kbps.






                share|improve this answer















                Bandwidth defines the minimum available bandwidth guaranteed during periods of congestion, this means, that if your link is congested and fully utilized, that class will still have reserved 592 Kbps.



                Both the shape and police commands restrict the output rate to a maximum Kbps value. Importantly, neither mechanism provides a minimum bandwidth guarantee during periods of congestion.



                Without knowing the full policy maps and group policies we can only speculate why they have decided to configure it like this and that is off topic here.



                Technically it means, that the default class, typical also know as best effort, has a maximum of 8.8 Mbps with a guaranteed minimum of 592 Kbps.







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited 6 hours ago

























                answered 7 hours ago









                CownCown

                6,39431030




                6,39431030






























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