98 lines
6.9 KiB
HTML
98 lines
6.9 KiB
HTML
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<meta name="DC.Title" content="Scenario: Limit browser traffic" />
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<meta name="abstract" content="You can use quality of service (QoS) to control traffic performance. Use a differentiated service policy to either limit or extend an application's performance within your network." />
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<title>Scenario: Limit browser traffic</title>
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<body id="rzak8example_1"><a name="rzak8example_1"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Scenario: Limit browser traffic</h1>
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<div><p>You can use quality of service (QoS) to control traffic
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performance. Use a differentiated service policy to either limit or extend
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an application's performance within your network.</p>
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<div class="section" id="rzak8example_1__situation"><a name="rzak8example_1__situation"><!-- --></a><h4 class="sectionscenariobar">Situation</h4><p>Your
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company has been experiencing high levels of browser traffic from the user-centered
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design (UCD) group on Fridays. This traffic has been interfering with the
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accounting department, which also requires good performance from their accounting
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applications on Fridays. You decide to limit browser traffic from the UCD
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group. The following figure illustrates the network setup in this scenario.</p>
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<div class="fignone"><span class="figcap">Figure 1. Web server limiting browser traffic to a client</span><br /><img src="rzak8501.gif" alt="Shows the network setup
when you might want to use a differentiated service" /><br /></div>
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</div>
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<div class="section" id="rzak8example_1__objective"><a name="rzak8example_1__objective"><!-- --></a><h4 class="sectionscenariobar">Objectives</h4><p>To
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limit browser traffic out of your network, you might create a differentiated
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service policy. A differentiated service policy divides your traffic into
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classes. All traffic within this policy is assigned a codepoint. This codepoint
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tells routers how to treat the traffic. In this scenario, the policy might
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be assigned a low codepoint value to affect how the network prioritizes browser
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traffic.</p>
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</div>
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<div class="section" id="rzak8example_1__prereq"><a name="rzak8example_1__prereq"><!-- --></a><h4 class="sectionscenariobar">Prerequisites
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and assumptions</h4><ul><li>You have a service-level agreement (SLA) with your ISP to ensure that
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the policies receive the requested priority. The QoS policy you create on
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the iSeries™ server
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enables traffic (in the policy) to receive priority throughout the network.
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The QoS policy does not guarantee the priority and is dependent on your SLA.
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In fact, taking advantage of QoS policies might give you some leverage to
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negotiate certain service-levels and rates.</li>
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<li>Differentiated service policies require DiffServ-aware routers along the
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network path. Most routers are DiffServ aware.</li>
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</ul>
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</div>
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<div class="section" id="rzak8example_1__example1steps"><a name="rzak8example_1__example1steps"><!-- --></a><h4 class="sectionscenariobar">Configuration</h4><p>After
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you verify the prerequisites steps, you are ready to create the differentiated
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service policy.</p>
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</div>
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</div>
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<div>
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<ol>
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<li class="olchildlink"><a href="rzak8scenariodetailsexample1step1.htm">Scenario details: Create the differentiated service policy</a><br />
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</li>
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<li class="olchildlink"><a href="rzak8scenariodetailsexample1step2.htm">Scenario details: Start or update the QoS server</a><br />
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</li>
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<li class="olchildlink"><a href="rzak8scenariodetailsexample1step3.htm">Scenario details: Use the monitor to verify your policy is working</a><br />
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</li>
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<li class="olchildlink"><a href="rzak8scenariodetailsexample1step4.htm">Scenario details: Change properties (if needed)</a><br />
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</li>
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</ol>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzak8examples.htm" title="These quality of service (QoS) policy scenarios can help you understand why and how to use QoS.">Scenarios</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzak8sla.htm" title="This topic points out some of the important aspects of a service-level agreement (SLA) that might affect your quality of service (QoS) implementation.">Service-level agreement</a></div>
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<div><a href="rzak8diffserv.htm" title="This is the first type of outbound bandwidth policy you can create on your server. Differentiated service divides your traffic into classes. To carry out a differentiated service policy, you need to determine how you want to classify your network traffic and how to handle the different classes.">Differentiated service</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzak8monitoring.htm" title="You can use the quality of service (QoS) monitor to analyze your IP traffic through the server.">Monitor QoS</a></div>
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</div>
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</div>
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</body>
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