62 lines
4.6 KiB
HTML
62 lines
4.6 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Reliable message function" />
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<meta name="abstract" content="The reliable message function of cluster resource services keeps track of each node in a cluster and ensures that all nodes have consistent information about the state of cluster resources." />
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<meta name="description" content="The reliable message function of cluster resource services keeps track of each node in a cluster and ensures that all nodes have consistent information about the state of cluster resources." />
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<meta name="DC.Relation" scheme="URI" content="rzaigconceptsevents.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaigmanagechangecrsssettings.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaigmanage.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzaigmanagemonitor.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Reliable message function</title>
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</head>
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<body id="rzaigconceptsreliablemessagefunction"><a name="rzaigconceptsreliablemessagefunction"><!-- --></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">Reliable message function</h1>
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<div><p>The <dfn class="term">reliable message function</dfn> of cluster
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resource services keeps track of each node in a cluster and ensures that all
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nodes have consistent information about the state of cluster resources.</p>
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<p>Reliable messaging uses retry and timeout values that are unique to clustering.
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These values are preset to values that should suit most environments. However,
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they can be changed through the Change cluster resource services settings
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interface. The message retry and timeout values are used to determine how
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many times a message is sent to a node before a failure or partition situation
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is signaled. For a local area network (LAN), the amount of time it takes to
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go through the number of retries before a failure or partition condition is
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signaled is approximately 45 seconds using the default retry and timeout values.
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For a remote network, more time is allowed to determine whether a failure
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or partition condition exists. You can figure approximately 4 minutes and
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15 seconds for a remote network.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <img src="./delta.gif" alt="Start of change" /><a href="rzaigconceptsevents.htm" title="Within a cluster several types events, actions, and services can occur.">Cluster events</a><img src="./deltaend.gif" alt="End of change" /></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="rzaigmanagechangecrsssettings.htm" title="The default values affecting message timeout and retry are set to account for most typical installations. However, it is possible to change these values to more closely match your communications environment.">Change cluster resource services settings</a></div>
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<div><a href="rzaigmanage.htm" title="This topic contains information that covers some of the tasks that involve managing your clusters.">Manage clusters</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="rzaigmanagemonitor.htm" title="Taking appropriate actions when necessary, the cluster resource services performs basic monitoring of a cluster and its components using the reliable message function and heartbeat monitoring.">Monitor cluster status</a></div>
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</div>
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</div>
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</body>
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</html>
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