111 lines
8.0 KiB
HTML
111 lines
8.0 KiB
HTML
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<meta name="DC.Title" content="Scenario: Dedicated delivery (IP telephony)" />
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<title>Scenario: Dedicated delivery (IP telephony)</title>
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<body id="rzak8example_2"><a name="rzak8example_2"><!-- --></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: Dedicated delivery (IP telephony)</h1>
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<div><p>If you need dedicated delivery and want to request a reservation,
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you use an integrated service policy. There are two types of integrated service
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policies to create: Guaranteed and controlled load. In this example, guaranteed
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service is used.</p>
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<div class="section" id="rzak8example_2__example2situation"><a name="rzak8example_2__example2situation"><!-- --></a><h4 class="sectionscenariobar">Situation</h4><p>The
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chief executive officer (CEO) of your company is going to give a live broadcast
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to a client across the country between 1:00 p.m.- 2:00 p.m. You must guarantee
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that IP telephony will have guaranteed bandwidth so that there are no interruptions
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during the broadcast. In this scenario, the application resides on the server.</p>
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<div class="fignone"><span class="figcap">Figure 1. CEO to client presentation guaranteed by an integrated service policy</span><br /><img src="Rzak8502.gif" alt="CEO to client presentation guaranteed
by an integrated service policy" /><br /></div>
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</div>
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<div class="section" id="rzak8example_2__example2objective"><a name="rzak8example_2__example2objective"><!-- --></a><h4 class="sectionscenariobar">Objectives</h4><p>Because
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the application your CEO is using requires a smooth, uninterrupted transfer,
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you decide to use a guaranteed integrated service policy. Guaranteed service
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controls the maximum queuing delay, so that packets will not be delayed over
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a designated amount of time.</p>
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</div>
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<div class="section" id="rzak8example_2__example2prereq"><a name="rzak8example_2__example2prereq"><!-- --></a><h4 class="sectionscenariobar">Prerequisites
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and assumptions</h4><p>An integrated service policy is an advanced policy
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that can require substantial resource. Integrated service policies require
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the following prerequisites:</p>
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<ul><li><strong>RSVP-enabled applications </strong><p>Because your server does not have
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any RSVP-enabled applications, you must write your own RSVP-enabled applications.
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To write your own applications, use the ReSerVation Protocol (RAPI) API or
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qtoq quality of service (QoS) socket APIs. For more information,
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see <a href="rzak8rsvp.htm">QoS APIs</a> and look for integrated service APIs.</p>
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</li>
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<li><strong>RSVP-enabled routers and servers along the network path </strong><p>QoS
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is a network solution. If you are unsure if the entire network has RSVP capabilities,
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you can still create an integrated service policy and use a marking to give
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it some priority; however, priority cannot be guaranteed. </p>
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</li>
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<li><strong>Service-level agreement </strong><p>You have a service-level agreement (SLA)
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with your ISP to ensure that the policies receive the requested priority.
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The QoS policy you create on the iSeries™ server enables traffic (in the
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policy) to receive priority throughout the network. The QoS policy does not
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guarantee the priority and is dependent on your SLA. In fact, taking advantage
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of QoS policies can give you some leverage to negotiate certain service-levels
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and rates. Use the service-level agreement link to find out more.</p>
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</li>
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</ul>
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</div>
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<div class="section" id="rzak8example_2__example2config"><a name="rzak8example_2__example2config"><!-- --></a><h4 class="sectionscenariobar">Configuration</h4><p>After
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you verify the prerequisites steps, you are ready to create the integrated
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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="rzak8scenariodetailsexample2step1.htm">Scenario details: Create the integrated service policy</a><br />
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</li>
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<li class="olchildlink"><a href="rzak8scenariodetailsexample2step2.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="rzak8scenariodetailsexample2step3.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="rzak8scenariodetailsexample2step4.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="rzak8servicetype.htm" title="There are two integrated service types: controlled load and guaranteed.">Integrated service types</a></div>
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<div><a href="rzak8intserv.htm" title="The second type of outbound bandwidth policy you can create is an integrated service policy. Integrated service provides the capability for IP applications to request and reserve bandwidth using the ReSerVation Protocol (RSVP) and quality of service (QoS) APIs.">Integrated service</a></div>
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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>
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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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