68 lines
4.4 KiB
HTML
68 lines
4.4 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="Client-to-server TFTP Read Request options" />
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<meta name="abstract" content="This information includes the additional TFTP options that are supported and a description of their use." />
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<meta name="description" content="This information includes the additional TFTP options that are supported and a description of their use." />
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<meta name="DC.Relation" scheme="URI" content="rzal5oack.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2000, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2000, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzal5rrqoptions" />
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Client-to-server TFTP Read Request options</title>
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</head>
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<body id="rzal5rrqoptions"><a name="rzal5rrqoptions"><!-- --></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">Client-to-server TFTP Read Request options</h1>
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<div><p>This information includes the additional TFTP options that are
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supported and a description of their use.</p>
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<p>To view the standard TFTP request parameters and their meanings, refer
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to Internet Request for Comments (RFC) 1350. For more information related
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to the TFTP options that are described here, see RFCs 1782, 1783, and 1784.
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Internet RFC 2090 describes the TFTP multicast option, which has some similarities
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to the Subnet Broadcast option. However, the TFTP Multicast option is
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not supported at this time. The TFTP Multicast option RFC is mentioned here
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as a reference to help understand the Subnet Broadcast option.</p>
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<p>The following is a list of supported options and their descriptions:</p>
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<dl><dt class="dlterm"><strong>blksize</strong></dt>
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<dd>Null (0h) terminated keyword <tt>blksize</tt> that is followed by the
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requested block size and represented as a null-terminated ASCII string. This
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option requests a block size for the requested file transfer instead of using
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the default of 512.</dd>
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<dt class="dlterm"><strong>sbroadcast</strong></dt>
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<dd>Null-terminated keyword <tt>sbroadcast</tt> that is followed by the subnet
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mask of the subnet to which the client is connected. This option indicates
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that the client wants to participate in a subnet-directed broadcast group.
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The subnet mask that is included with this option is used with the client's
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IP address to determine the client's subnet address.</dd>
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<dt class="dlterm"><strong>tsize</strong></dt>
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<dd>Null-terminated keyword <tt>tsize</tt> that is followed by a null-terminated
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ASCII representation of 0 (30h). This option is a request for the server to
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return the file size in an Option Acknowledgment (OACK).</dd>
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</dl>
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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> <a href="rzal5tftpsub.htm" title="Broadcast storms are a performance problem that might occur when there are large numbers of systems that boot from the network.">TFTP Subnet Broadcast option</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzal5oack.htm" title="The TFTP server sends an Option Acknowledgment (OACK) to a client in response to either a read request or a write request that includes additional TFTP options as described in Client to server TFTP Read Request (RRQ) options.">Server-to-client TFTP Option Acknowledgment</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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