61 lines
4.1 KiB
HTML
61 lines
4.1 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en-US" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="dc.language" scheme="rfc1766" content="en-us" />
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-13" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<title>Point to point virtual Ethernet</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<a name="rzahqprivatelan"></a>
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<h3 id="rzahqprivatelan">Point to point virtual Ethernet</h3>
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<p><img src="delta.gif" alt="Start of change" />i5/OS™ needs a way to communicate with its integrated Windows
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servers. This communication takes place over a point to point virtual Ethernet
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network. When an integrated server is installed a special virtual network
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is created between it and a controlling i5/OS partition. This network is called point
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to point because it has only two endpoints, the integrated server and the iSeries™, and also because, like a virtual Ethernet network, it is emulated within
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the iSeries and no additional physical network adapters or cables are used.
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In i5/OS, it is configured as an Ethernet line description with Port Number
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value *VRTETHPTP.<img src="deltaend.gif" alt="End of change" /></p>
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<p><img src="delta.gif" alt="Start of change" />When you run the Install Windows server (INSWNTSVR) command
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it will configure a point to point virtual Ethernet.<img src="deltaend.gif" alt="End of change" /></p>
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<p>You may wonder what makes a point to point virtual Ethernet connection
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different from a virtual Ethernet network. The answer is that point to point
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virtual Ethernet is configured differently and can only have two endpoints:
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the iSeries and an integrated server. Point to point virtual Ethernet only
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supports the TCP/IP protocol, and by default uses restricted IP addresses
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in private domains, so the addresses are not passed through gateways or routers.</p>
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<p><img src="delta.gif" alt="Start of change" />For Integrated xSeries® Server (IXS) and Integrated xSeries Adapter
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(IXA) attached xSeries servers, these addresses take the form of 192.168.xxx.yyy,
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where (xxx and yyy can be from 1 to 2 digits.) For example, for an IXS that
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is defined with hardware resource number LIN0<span class="bold">3</span>, the
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IP address will be 192.168.<span class="bold">3</span>.yyy.<img src="deltaend.gif" alt="End of change" /></p>
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<p><img src="delta.gif" alt="Start of change" />For iSCSI hardware, these addresses take the form of 192.168.xxx.yyy,
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where xxx ranges from 100 to 254 and results in a unique class C network.
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In our example, the i5/OS side of the point to point network will be given
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the IP address 192.168.100.1, and the Windows side has 192.168.100.2. As
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you define multiple line descriptions for the same hardware resource, yyy
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is incremented.<img src="deltaend.gif" alt="End of change" /></p>
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<p>You can allow the INSWNTSVR command to automatically assign these IP addresses
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or manually configure them to prevent TCP/IP address collisions with other
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hosts on the system.</p>
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</body>
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