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<h1 class="topictitle1">Configure TCP/IP when the operating system is in restricted state</h1>
<div><p>Use the method outlined in this topic if you need to run TCP/IP
while the operating system is in restricted state.</p>
<div class="section"><h4 class="sectiontitle">Situation</h4><p>As the network administrator,
you need to obtain backup status reports for your server. When you are running
backup procedures, the operating system must be in restricted state to prevent
users from changing any configuration. Because you are remote, you access
status reports using a personal digital assistant (PDA) device (or any TCP/IP
networking device). The PDA uses a sockets-enabled application that requires
an active TCP/IP interface available to communicate with the server. To allow
this communication, you must first start TCP/IP using special parameters.
After you start TCP/IP, you will need to start a specific TCP/IP interface
to allow access to the system. The information below provides more detail.</p>
</div>
<div class="section"><h4 class="sectiontitle">Restrictions</h4><div class="p">The following restrictions
apply when the operating system is running in restricted state: <ul><li>Cannot start TCP/IP servers (<span class="cmdname">STRTCPSRV</span> CL command),
since they require active subsystems.</li>
<li>Can only start one interface for a specific line type (Ethernet, token-ring,
or DDI) that is not attached to a network server description (NWSD) or a network
interface description (NWID).</li>
</ul>
</div>
</div>
<div class="section"><h4 class="sectiontitle">Configuration steps</h4><ol><li><span class="cmdname">Start TCP/IP using special parameters.</span><p><img src="./delta.gif" alt="Start of change" />When
the iSeries™ system
is in restricted state, process the following command from the command line
interface: <kbd class="userinput">STRTCP STRSVR(*NO) STRIFC(*NO) STRPTPPRF(*NO) STRIP6(*NO)</kbd>.
These are the only parameters accepted when the operating system is in restricted
state. The above command will start TCP/IP; however, it will not and cannot
start TCP/IP application servers or IP interfaces.<img src="./deltaend.gif" alt="End of change" /></p>
</li>
<li><span class="cmdname">Start a specific TCP/IP interface. After you start TCP/IP in
restricted state, you can start the specific interface needed for your sockets-enabled
application.</span><ol type="a"><li><span class="cmdname">Verify that the interface you want to start uses a line description
of *ELAN, *TRLAN, or *DDI. </span><p>To view the line type for your interface,
at a command line interface enter <kbd class="userinput">CFGTCP</kbd> and select
option 1 (Work with TCP/IP interfaces).</p>
</li>
<li><span class="cmdname">Verify that the interface is not attached to an NWID or NWSD.
Any other attempts will prompt an error message.</span><div class="p">To verify the
interface is not attached to an NWID or NWSD, from a command line interface
enter <kbd class="userinput">DSPLIND <var class="varname">abc</var></kbd> (where <kbd class="userinput"><var class="varname">abc</var></kbd> is
the name of your line description). Verify that the Resource name is not *NWID
or *NWSD. <div class="note"><span class="notetitle">Note:</span> If the interface is attached to an NWID or NWSD,
then it is recommended you select a different interface.</div>
</div>
</li>
<li><span class="cmdname">Finally, start the interface. At a command line interface, enter
the following: </span><kbd class="userinput">STRTCPIFC INTNETADR('<var class="varname">a.b.c.d</var>')</kbd>.
Replace <kbd class="userinput"><var class="varname">a.b.c.d</var></kbd> with your interface
IP address.<div class="note"><span class="notetitle">Note:</span> Verify that <kbd class="userinput">STRTCPIFC INTNETADR(*AUTOSTART)</kbd> is
not specified.</div>
</li>
</ol>
</li>
<li><span class="cmdname">Verify that the interface is active.</span><p>Ping the specific
interface for your application. There are very few TCP/IP related utilities
that will operate in restricted state. However, <span class="cmdname">ping</span> and <span class="cmdname">netstat</span> can
be used. For more information about using the <span class="cmdname">ping</span> and <span class="cmdname">netstat</span> commands,
review <a href="../rzaku/rzakutoolsvfy.htm">Tools
to verify your network structure</a> within TCP/IP troubleshooting.</p>
</li>
</ol>
</div>
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<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzai2configuring.htm" title="This topic shows you how to engage your server and configure TCP/IP. In addition, see instructions for configuring IPv6.">Configure TCP/IP</a></div>
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