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+<div class="document" id="active-message-id-allocation-for-network-protocols-and-applications">
+<h1 class="title">Active Message ID Allocation for Network Protocols and Applications</h1>
+<table class="docinfo" frame="void" rules="none">
+<col class="docinfo-name" />
+<col class="docinfo-content" />
+<tbody valign="top">
+<tr class="field"><th class="docinfo-name">TEP:</th><td class="field-body">4</td>
+</tr>
+<tr class="field"><th class="docinfo-name">Group:</th><td class="field-body">Network Protocol Working Group</td>
+</tr>
+<tr class="field"><th class="docinfo-name">Type:</th><td class="field-body">Best Current Practice</td>
+</tr>
+<tr><th class="docinfo-name">Status:</th>
+<td>Draft</td></tr>
+<tr class="field"><th class="docinfo-name">TinyOS-Version:</th><td class="field-body">2.x</td>
+</tr>
+<tr><th class="docinfo-name">Author:</th>
+<td>Omprakash Gnawali</td></tr>
+<tr class="field"><th class="docinfo-name">Draft-Created:</th><td class="field-body">07-May-2008</td>
+</tr>
+<tr class="field"><th class="docinfo-name">Draft-Version:</th><td class="field-body">1.6</td>
+</tr>
+<tr class="field"><th class="docinfo-name">Draft-Modified:</th><td class="field-body">2008-06-20</td>
+</tr>
+<tr class="field"><th class="docinfo-name">Draft-Discuss:</th><td class="field-body">TinyOS Developer List <tinyos-devel at mail.millennium.berkeley.edu></td>
+</tr>
+</tbody>
+</table>
+<div class="note">
+<p class="first admonition-title">Note</p>
+<p class="last">This document specifies a Best Current Practices for the
+TinyOS Community, and requests discussion and suggestions for
+improvements. Distribution of this memo is unlimited. This memo
+is in full compliance with <a class="citation-reference" href="#tep-1" id="id1" name="id1">[TEP_1]</a>.</p>
+</div>
+<div class="section">
+<h1><a id="introduction" name="introduction">1. Introduction</a></h1>
+<p>In order to document the Active Message Type <a class="footnote-reference" href="#id3" id="id2" name="id2">[1]</a>, also known as
+Active Message Identifier (AM ID), used by the protocols and to
+prevent AM ID conflicts between applications and protocols distributed
+with TinyOS 2.x, the application and protocol developers MUST use AM
+IDs in the appropriate range. The network protocol implementors MUST
+use AM ID allocated by the Network Protocol Working Group for the
+specific protocol. The application developers MUST use AM IDs from the
+unreserved pool. This TEP describes the process of AM ID allocations
+and deallocations and how the allocations are documented.</p>
+</div>
+<div class="section">
+<h1><a id="am-id-pools" name="am-id-pools">2. AM ID pools</a></h1>
+<p>The unreserved pool is in the range 128-255 (0x80-0xFF). The reserved
+pool is in the range 0-127 (0x00-0x7F).</p>
+<div class="section">
+<h2><a id="unreserved-pool-0x80-0xff" name="unreserved-pool-0x80-0xff">2.1 Unreserved pool (0x80 - 0xFF)</a></h2>
+<p>When an application uses the AM ID in the range 128-255, it is
+guaranteed to not conflict with AM IDs used by the protocols
+distributed with TinyOS 2.x. These IDs may conflict with the protocols
+in the contrib tree or other applications. No allocation request is
+necessary to use AM IDs in this range.</p>
+</div>
+<div class="section">
+<h2><a id="reserved-pool-0x00-0x7f" name="reserved-pool-0x00-0x7f">2.2 Reserved pool (0x00 - 0x7F)</a></h2>
+<p>When a protocol uses an allocated AM ID in the reserved pool, it is
+guaranteed to not conflict with AM IDs used by applications or other
+protocols that also use an allocated AM ID. The AM ID may conflict
+with the protocols and applications in the contrib tree.</p>
+</div>
+</div>
+<div class="section">
+<h1><a id="requesting-am-id-allocation" name="requesting-am-id-allocation">3. Requesting AM ID Allocation</a></h1>
+<p>The Network Protocol Working Group will maintain a list of all the
+allocations in the reserved range.</p>
+<p>Developers whose protocols will be included within the ''tos''
+directory MUST receive AM ID allocation from the Network Protocol
+Working Group. This allocation policy applies to software and
+protocols maintained by any working group.</p>
+<p>To receive an AM ID allocation, please send an email to the chair of
+Network Protocol Working Group with the following information:
+* Working Group responsible for the protocol
+* Name of the protocol and relevant TEPs
+* Location of the protocol in TinyOS source tree</p>
+<p>Upon receiving this information, the chair of the Network Protocol
+Working Group will allocate an AM ID and document the allocation.</p>
+</div>
+<div class="section">
+<h1><a id="reclaiming-the-am-id-allocation" name="reclaiming-the-am-id-allocation">4. Reclaiming the AM ID Allocation</a></h1>
+<p>When the working group responsible for maintaining the protocol with
+an allocated AM ID obsoletes the protocol, the chair of the working
+group should send a deallocation request to the chair of the Network
+Protocol Working Group. The chair of the Network Protocol Working
+Group will document the deallocation.</p>
+</div>
+<div class="section">
+<h1><a id="documenting-allocations-and-deallocations" name="documenting-allocations-and-deallocations">5. Documenting allocations and deallocations</a></h1>
+<p>For each TinyOS 2.x release that introduces a new protocol or use of a
+new AM ID, the chair of the Network Protocol Working Group creates a
+new TEP that lists all the AM ID allocations for that release.</p>
+</div>
+<div class="section">
+<h1><a id="acknowledgments" name="acknowledgments">6. Acknowledgments</a></h1>
+<p>Thanks to the TinyOS community at large for helping to formulate this
+ID allocation policy.</p>
+</div>
+<div class="section">
+<h1><a id="author-s-address" name="author-s-address">7. Author's Address</a></h1>
+<div class="line-block">
+<div class="line">Omprakash Gnawali</div>
+<div class="line">Ronald Tutor Hall (RTH) 418</div>
+<div class="line">3710 S. McClintock Avenue</div>
+<div class="line">Los Angeles, CA 90089</div>
+<div class="line"><br /></div>
+<div class="line">phone - +1 213 821-5627</div>
+<div class="line">email - <a class="reference" href="mailto:gnawali@usc.edu">gnawali@usc.edu</a></div>
+</div>
+</div>
+<div class="section">
+<h1><a id="citations" name="citations">8. Citations</a></h1>
+<table class="docutils citation" frame="void" id="tep-1" rules="none">
+<colgroup><col class="label" /><col /></colgroup>
+<tbody valign="top">
+<tr><td class="label"><a class="fn-backref" href="#id1" name="tep-1">[TEP_1]</a></td><td>TEP 1: TEP Structure and Keywords</td></tr>
+</tbody>
+</table>
+<table class="docutils footnote" frame="void" id="id3" rules="none">
+<colgroup><col class="label" /><col /></colgroup>
+<tbody valign="top">
+<tr><td class="label"><a class="fn-backref" href="#id2" name="id3">[1]</a></td><td>TEP 116: Packet Protocols</td></tr>
+</tbody>
+</table>
+</div>
+</div>
+</body>
+</html>
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