76 lines
4.7 KiB
HTML
76 lines
4.7 KiB
HTML
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<meta name="dc.date" scheme="iso8601" content="2005-10-17" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<title>Use the TCP/IP interfaces for OptiConnect</title>
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<a name="tcpipuse"></a>
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<h3 id="tcpipuse">Use the TCP/IP interfaces for OptiConnect</h3>
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<p>You can configure the TCP/IP interfaces for OptiConnect in either of two
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ways. In the first configuration, the OptiConnect bus is viewed similar to
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a LAN, and has a single subnet address. Each *OPC interface is assigned a
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unique IP address within the subnet, thus defining the host's connection to
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that subnet. An example of this configuration is: </p>
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<pre class="xmp">System A:
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ADDTCPIFC INTNETADR('10.1.1.1') LIND(*OPC) SUBNETMASK('255.255.255.0')
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System B:
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ADDTCPIFC INTNETADR('10.1.1.2') LIND(*OPC) SUBNETMASK('255.255.255.0')
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System C:
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ADDTCPIFC INTNETADR('10.1.1.3') LIND(*OPC) SUBNETMASK('255.255.255.0')</pre>
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<p>In the second configuration, you can use the associated local interface
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parameter (<span class="italic">local-interface</span>). Using this method, you
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can configure the OptiConnect interfaces as part of existing local subnets
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to which the iSeries™ server is attached via other local interfaces (for
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example, token ring or ethernet interfaces). Each OptiConnect interface would
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define an endpoint of a point-to-point OptiConnect connection between two iSeries servers. The existing local interface would then be specified as the
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associated local interface for the OptiConnect interface. An example of this
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configuration is:</p>
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<pre class="xmp">System A:
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ADDTCPIFC INTNETADR('9.1.1.1') LIND(TRNLINE) SUBNETMASK('255.255.255.0')
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ADDTCPIFC INTNETADR('9.1.1.2') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.1)
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ADDTCPIFC INTNETADR('9.1.1.3') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.1)
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System B:
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ADDTCPIFC INTNETADR('9.1.1.2') LIND(TRNLINE) SUBNETMASK('255.255.255.0')
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ADDTCPIFC INTNETADR('9.1.1.1') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.2)
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ADDTCPIFC INTNETADR('9.1.1.3') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.2)
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System C:
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ADDTCPIFC INTNETADR('9.1.1.3') LIND(TRNLINE) SUBNETMASK('255.255.255.0')
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ADDTCPIFC INTNETADR('9.1.1.1') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.3)
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ADDTCPIFC INTNETADR('9.1.1.2') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.3)</pre>
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<p>To use the associated local interface, you must configure an interface
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on each system, and both must be active. Using the example above, the following
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two lines represent a point-to-point configuration from System B to System
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C.</p>
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<pre class="xmp">ADDTCPIFC INTNETADR('9.1.1.3') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.2)
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ADDTCPIFC INTNETADR('9.1.1.2') LIND(*OPC) SUBNETMASK('255.255.255.255') LCLIFC(9.1.1.3)</pre>
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<p>The advantage of the associated local interface technique is that there
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is no need to define new subnets for the OptiConnect bus. Subsequently, no
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external route tables need to be updated to provide connectivity between the
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OptiConnect interfaces and the rest of the TCP/IP network. Moreover, if one
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of the OptiConnect paths goes inactive, packets will automatically be routed
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over the backup interface. In the case of the second example above, the TRNLINE.
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One disadvantage of this type of configuration is that an interface must be
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defined for every destination on the OptiConnect bus.</p>
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