73 lines
4.6 KiB
HTML
73 lines
4.6 KiB
HTML
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<?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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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<meta name="dc.date" scheme="iso8601" content="2005-09-06" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow"/>
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<title>Directory Server (LDAP) - Object identifier (OID)</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="rzahyoid"></a>
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<h3 id="rzahyoid">Object identifier (OID)</h3>
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<p>An object identifier (OID) is a string, of decimal numbers, that uniquely
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identifies an object. These objects are typically an object class or an attribute.</p>
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<p>If you do not have an OID, you can specify the object class or attribute
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name appended with <span class="bold">-oid</span>. For example, if you create
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the attribute tempID, you can specify the OID as <span class="bold">tempID-oid</span>.</p>
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<p>It is absolutely critical that private OIDs are obtained from legitimate
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authorities. There are two basic strategies for obtaining legitimate OIDs:</p>
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<ul>
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<li>Register the objects with an authority. This strategy can be convenient,
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for example, if you need a small number of OIDs.</li>
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<li>Obtain an arc (an arc is an individual subtree of the OID tree) from an
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authority and assign your own OIDs as needed. This strategy might be preferred
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if many OIDs are needed, or OID assignments are not stable.</li></ul>
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<p>The American National Standards Institute (ANSI) is the registration authority
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for organization names in the United States under the global registration
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process established by International Standards Organization (ISO) and International
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Telecommunication Union (ITU). More information about organization name registration
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can be found at the <a href="http://www.ansi.org" target="_blank">ANSI Web
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site</a>
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<img src="www.gif" alt="Link outside the Information Center" /> (www.ansi.org). The ANSI
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OID arc for organizations is 2.16.840.1. ANSI will assign a number (NEWNUM),
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creating a new OID arc: 2.16.840.1.NEWNUM.</p>
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<p>In most countries or regions, the national standards association maintains
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an OID registry. As with the ANSI arc, these are generally arcs assigned
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under the OID 2.16. It might take some investigation to find the OID authority
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for a particular country or region. The national standards organization for
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your country or region might be an ISO member. The names and contact information
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of ISO members can be found at the <a href="http://www.iso.ch" target="_blank">ISO Web site</a>
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<img src="www.gif" alt="Link outside the Information Center" /> (www.iso.ch).</p>
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<p>The Internet Assigned Numbers Authority (IANA) assigns private enterprise
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numbers, which are OIDs, in the arc 1.3.6.1.4.1. IANA will assign a number
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(NEWNUM) so that the new OID arc will be 1.3.6.1.4.1.NEWNUM. These numbers
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can be obtained from the <a href="http://www.iana.org" target="_blank">IANA
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Web site</a>
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<img src="www.gif" alt="Link outside the Information Center" />(www.iana.org).</p>
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<p>Once your organization has been assigned an OID, you can define your own
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OIDs by appending to the end of the OID. For example, suppose your organization
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has been assigned the fictional OID 1.1.1. No other organization will be
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assigned an OID that starts with "1.1.1". You might create a range for LDAP
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by appending ".1" to form 1.1.1.1. You might further subdivide this into
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ranges for objectclasses (1.1.1.1.1), attribute types (1.1.1.1.2), and so
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on, and assign OID 1.1.1.1.2.34 to the attribute "foo".</p>
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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