1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 * 19 */ 20 21 package org.apache.directory.server.dhcp.options.dhcp; 22 23 24 import org.apache.directory.server.dhcp.options.DhcpOption; 25 26 27 /** 28 * This option is used by DHCP clients to specify their unique 29 * identifier. DHCP servers use this value to index their database of 30 * address bindings. This value is expected to be unique for all 31 * clients in an administrative domain. 32 * 33 * Identifiers SHOULD be treated as opaque objects by DHCP servers. 34 * 35 * The client identifier MAY consist of type-value pairs similar to the 36 * 'htype'/'chaddr' fields. For instance, it MAY consist 37 * of a hardware type and hardware address. In this case the type field 38 * SHOULD be one of the ARP hardware types defined in STD2. A 39 * hardware type of 0 (zero) should be used when the value field 40 * contains an identifier other than a hardware address (e.g. a fully 41 * qualified domain name). 42 * 43 * For correct identification of clients, each client's client- 44 * identifier MUST be unique among the client-identifiers used on the 45 * subnet to which the client is attached. Vendors and system 46 * administrators are responsible for choosing client-identifiers that 47 * meet this requirement for uniqueness. 48 * 49 * The code for this option is 61, and its minimum length is 2. 50 * 51 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 52 * @version $Rev: 638228 $, $Date: 2008-03-18 07:12:41 +0100 (Di, 18 Mär 2008) $ 53 */ 54 public class ClientIdentifier extends DhcpOption 55 { 56 /* 57 * @see org.apache.directory.server.dhcp.options.DhcpOption#getTag() 58 */ 59 public byte getTag() 60 { 61 return 61; 62 } 63 }