ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzahj_5.4.0.1/rzahjrzahjcos.htm

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<title>Class of service (COS) routing</title>
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<h4 id="rzahjcos">Class of service (COS) routing</h4>
<p>Network nodes maintain information about all network nodes and links between
network nodes. When a session is requested, a mode is specified. Each node
contains a class of service (COS) parameter that specifies the class of service
description that will be used to calculate the route the session will take.
The class of service also specifies the transmission priority that will govern
the rate of data transfer after the session has been established.</p>
<p>The following class-of-service descriptions are shipped with the iSeries system:</p>
<ul>
<li>#CONNECT: the default class of service</li>
<li>#BATCH: a class of service that is tailored for batch communications</li>
<li>#BATCHSC: is the same as #BATCH except that a data link security level
of at least *PKTSWTNWK is required</li>
<li>#INTER: a class of service that is tailored for interactive communications</li>
<li>#INTERSC: is the same as #INTER except that a data link security level
of at least *PKTSWTNWK is required</li></ul>
<p>If you need to force a particular route to be selected, a user class of
service (COSD) can be created. See <a href="rzahjcospi.htm#rzahjcos-pi">Create a class-of-service description</a> for a thorough
explanation.</p>
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