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 ?










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 ?










    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 ?










      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






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 13 at 16:22









      user53632user53632

      1474




      1474






















          1 Answer
          1






          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

























            Your Answer








            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "496"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: false,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: null,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            noCode: true, onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fnetworkengineering.stackexchange.com%2fquestions%2f57632%2fbandwidth-shape-average-combined%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            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 Mar 13 at 18:08

























                answered Mar 13 at 17:02









                CownCown

                6,63331031




                6,63331031






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Network Engineering Stack Exchange!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fnetworkengineering.stackexchange.com%2fquestions%2f57632%2fbandwidth-shape-average-combined%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Biblatex bibliography style without URLs when DOI exists (in Overleaf with Zotero bibliography)

                    ComboBox Display Member on multiple fields

                    Is it possible to collect Nectar points via Trainline?