1 <!-- 2 -- ident "%W% %E% SMI" 3 -- 4 CDDL HEADER START 5 6 The contents of this file are subject to the terms of the 7 Common Development and Distribution License, Version 1.0 only 8 (the "License"). You may not use this file except in compliance 9 with the License. 10 11 You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 12 or http://www.opensolaris.org/os/licensing. 13 See the License for the specific language governing permissions 14 and limitations under the License. 15 16 When distributing Covered Code, include this CDDL HEADER in each 17 file and include the License file at usr/src/OPENSOLARIS.LICENSE. 18 If applicable, add the following below this CDDL HEADER, with the 19 fields enclosed by brackets "[]" replaced with your own identifying 20 information: Portions Copyright [yyyy] [name of copyright owner] 21 22 CDDL HEADER END 23 24 -- Copyright (c) 2000-2001 by Sun Microsystems, Inc. 25 -- All rights reserved. 26 --> 27 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> 28 <html> 29 30 <head> 31 <title>DHCP Manager Help: Modify Option</title> 32 <meta NAME="AUTHOR" CONTENT="smorgan"> 33 <meta NAME="KEYWORDS" CONTENT="DHCP"> 34 35 </head> 36 37 <body bgcolor="#FFFFFF"> 38 39 <a name="top"></a> 40 41 <table border=0 cellspacing=0 cellpadding=0 width=615> 42 43 <!-- Start navigation banner --> 44 45 <tr><td colspan=4 WIDTH="615" align="center" valign="top"><IMG SRC="art/bannersmc.gif" WIDTH=615 BORDER=0 ALT="DHCP Manager Help"> 46 47 </td> 48 </tr> 49 50 <!-- End navigation banner --> 51 52 53 <tr> 54 55 <!-- Start contents block --> 56 57 <td colspan=1 valign="top" width=105> 58 <P> </P> 59 60 <A HREF="dhcp_main_top.html"><STRONG>Overview</STRONG></A><P> 61 <A HREF="dhcp_relay_ref.html"><STRONG>Servers and Relays</STRONG></A><P> 62 <A HREF="dhcp_addr_ref.html"><STRONG>IP Addresses</STRONG></A><P> 63 <A HREF="dhcp_macro_ref.html"><STRONG>Macros</STRONG></A><P> 64 <A HREF="dhcp_option_ref.html"><STRONG>Options</STRONG></A><BR> 65 <A HREF="dhcp_option_create.html">Create</A><BR> 66 <A HREF="dhcp_option_dup.html">Duplicate</A><BR> 67 68 <IMG SRC="art/tip2.gif" WIDTH=12 HEIGHT=10 BORDER=0 ALT="">Modify<BR> 69 <A HREF="#name"><EM>Name</EM></A><BR> 70 <A HREF="#cat"><EM>Category</EM></A><BR> 71 <A HREF="#code"><EM>Code</EM></A><BR> 72 <A HREF="#type"><EM>Data Type</EM></A><BR> 73 <A HREF="#gran"><EM>Granularity</EM></A><BR> 74 <A HREF="#max"><EM>Maximum</EM></A><BR> 75 <A HREF="#class"><EM>Class</EM></A><BR> 76 77 <A HREF="dhcp_option_del.html">Delete</A><P> 78 79 <A HREF="dhcp_main_how.html"><STRONG>How To..</STRONG></A><P> 80 <A HREF="dhcp_main_menus.html"><STRONG>Menus</STRONG></A><P> 81 <A HREF="dhcp_main_idx.html"><STRONG>Index</STRONG></A> 82 83 84 </td> 85 86 87 88 <!-- End contents block --> 89 90 <!-- Start column rule --> 91 92 <td colspan=1 width=5 bgcolor="#CCCCCC"> </td> 93 94 <!-- End column spacer --> 95 96 <!-- Start column spacer --> 97 98 <td colspan=1 width=10 bgcolor="#FFFFFF"> </td> 99 100 <!-- End column spacer --> 101 102 103 104 <!-- Start topic block --> 105 106 107 <td colspan=1 valign="top" bgcolor="#ffffff"> 108 <P> </P> 109 110 111 112 <h1>Modify Option</h1> 113 114 The Option Properties dialog box lets you modify existing settings for an option in the 115 DHCP server's network database. <p> 116 117 See <a href="dhcp_macros_about.html"> 118 About Macros and Options</a>, for more information about defining DHCP options.<p> 119 The settings in the Modify Option dialog box are described in the following table.<P> 120 <P><HR NOSHADE><P> 121 122 123 <table border=0 cellspacing=4 cellpadding=3> 124 125 <tr> 126 <td width=100 valign="top"><a name="name"><STRONG>Name</STRONG></a></td> 127 <td valign="top">The name of the option. 128 Option names can be a maximum of 128 alphanumeric characters including spaces.</td> 129 </tr> 130 131 <tr> 132 <td width=100 valign="top"><a name="cat"><STRONG>Category</STRONG></a></td> 133 <td valign="top">The category of the option: 134 The category can be one of Site, Extend, or Vendor.<P> 135 <table border=0 cellspacing=3 cellpadding=3> 136 137 138 <tr> 139 <td width=100 valign="top"><U>Site</U></td> 140 <td valign="top">User-defined option definitions, used for 141 unique or custom purposes; accepts <a href="#code">Option 142 Codes</a> <tt>128-254</tt>.</td> 143 </tr> 144 145 <tr> 146 <td width=100 valign="top"><U>Extend</U></td> 147 <td valign="top">Option definitions beyond the standard set, 148 which may already be present in versions of the DHCP protocol 149 being used on your server. Rather than upgrading your DHCP 150 implementation, you can add extended options; accepts Option 151 Codes <tt>77-127</tt>.</td> 152 </tr> 153 154 <tr> 155 <td width=100 valign="top"><U>Vendor</U></td> 156 <td valign="top">Hardware-, vendor-, or platform-specific option 157 definitions; accepts Option Codes <tt>1-254</tt>. Selecting this 158 context enables the <a href="#class">Client Class</a> 159 parameter.</td> 160 </tr> 161 162 </table> 163 </td> 164 </tr> 165 166 167 <tr> 168 <td width=115 valign="top"><a name="code"><STRONG>Code</STRONG></a></td> 169 <td valign="top">A unique numeric code to 170 identify the option. Valid values depend on the option <a 171 href="#cat">category</a>:<P> 172 173 <table border=0 cellspacing=3 cellpadding=3> 174 175 <tr> 176 <td width=100 valign="top"><U>Extend</U></td> 177 <td valign="top">Accepts code values of <tt>77-127</tt><P></TD> 178 </tr> 179 180 <tr> 181 <td width=100 valign="top"><U>Site</U></td> 182 <td valign="top">Accepts code values of <tt>128-254</tt><P></TD> 183 </tr> 184 185 <tr> 186 <td width=100 valign="top"><U>Vendor</U></td> 187 <td valign="top">Accepts code values of <tt>1-254</tt></td> 188 </tr> 189 190 </table> 191 192 <P> 193 </td> 194 195 </tr> 196 197 <tr> 198 <td width=100 valign="top"><A NAME="type"><STRONG>Data Type</STRONG></A></td> 199 <td valign="top">The type of data that is acceptable 200 for options values:<P> 201 202 <table border=0 cellspacing=3 cellpadding=3> 203 204 <tr> 205 <td width=100 valign="top"><u>Ascii</u></td> 206 <td valign="top">ASCII text.</td> 207 </tr> 208 209 <tr> 210 <td width=100 valign="top"><u>Boolean</u></td> 211 <td valign="top">No value is associated with this data type. 212 Presence of options of this type denote Boolean TRUE; absence 213 denotes FALSE.</td> 214 </tr> 215 216 <tr> 217 <td width=100 valign="top"><u>IP</u></td> 218 <td valign="top">One or more Internet addresses in dotted decimal format.</td> 219 </tr> 220 <tr> 221 <td width=100 valign="top"><u>Octet</u></td> 222 <td valign="top">Uninterpreted ASCII representation of binary 223 data; for example, a client ID.</td> 224 </tr> 225 <tr> 226 <td width=100 valign="top"><u>Unumber8</u><BR><u>Unumber16</u><BR> 227 <u>Unumber32</u><BR><u>Unumber64</u><BR> 228 229 </td> 230 <td valign="top">Unsigned number, where the trailing number indicates the number of bits in the number.</td> 231 </tr> 232 <tr> 233 <td width=100 valign="top"><u>Snumber8</u><BR><u>Snumber16</u><BR> 234 <u>Snumber32</u><BR><u>Snumber64</u><BR> 235 </td> 236 <td valign="top">Signed number, where the trailing number indicates the number of bits in the number.</td> 237 </tr> 238 239 </table> 240 </td> 241 </tr> 242 243 244 <tr> 245 <td width=100 valign="top"><a name="gran"><STRONG>Granularity</STRONG></a></td> 246 <td valign="top">Specifies how many values of the given <a 247 href="#type">data type</a> are required to make a complete option value. 248 For example, a data type of <tt>IP</tt> and a granularity of <tt>2</tt> would 249 mean that the option value would need to contain two IP addresses.</td> 250 </tr> 251 252 <tr> 253 <td width=100 valign="top"><a name="max"><STRONG>Maximum</STRONG></a></td> 254 <td valign="top">The maximum number of values of a 255 given granularity that can be specified for the option. Building on the 256 previous example, a maximum of <tt>2</tt>, with a granularity of 257 <tt>2</tt> and a data type of <tt>IP</tt> would mean that the option 258 value could contain a maximum of two pairs of IP addresses.<P> 259 260 <table border=0> 261 262 <tr> 263 <td width=100 valign="top"><U>Unlimited</U></td> 264 <td valign="top">No limit to the number of values; implies a 265 maximum setting of <tt>0</tt>.</td> 266 </tr> 267 268 <tr> 269 <td width=100 valign="top"><U>Specify</U></td> 270 <td valign="top">A specific number indicating the maximum.</td> 271 </tr> 272 273 </table> 274 </td> 275 </tr> 276 277 278 <tr> 279 <td width=100 valign="top"><A NAME="class"><STRONG>Vendor Client Classes</STRONG></A></td> 280 <td valign="top">This option is enabled only when the option 281 <a href="#cat">category</a> is Vendor. It identifies the client class(es) with which the Vendor option is 282 associated.<P> 283 The Class is an ASCII string representing the client machine type and/or operating system, for example, <TT>SUNW.Ultra5_10</TT>. This type of option makes it possible to define configuration parameters that are passed to all clients of the same class. <P> 284 Enter the client class and then press Enter. You can 285 specify multiple client classes. Only those DHCP clients with a client 286 class value matching one listed here will use the option.</td> 287 </tr> 288 289 290 </table> 291 <P> 292 293 <strong>Notify DHCP Server of Change:</STRONG> Check the box if 294 you want the DHCP server to reload the <tt>dhcptab</tt> immediately after 295 the data is written. Normally, you will want this to 296 happen. However, if you are making multiple changes, you may choose 297 to wait so that the server reloads only after all the 298 changes are written. <P> 299 <A HREF="#top"><small>return to top</small></A> 300 301 <p> </p> 302 303 <!-- Don't go past this line! --> 304 305 </td> 306 307 <!-- End topic block --> 308 309 </tr> 310 311 </table> 312 313 <!-- End topic table --> 314 315 </body> 316 </html>