D-Link DFL-260E User Manual for DFL-260E - Page 255
Custom Options, Custom Option, String, tftp.mycompany.com
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5.2.2. Custom Options Chapter 5. DHCP Services 5.2.2. Custom Options Adding a Custom Option to the DHCP server definition allows the administrator to send specific pieces of information to DHCP clients in the DHCP leases that are sent out. An example of this is certain switches that require the IP address of a TFTP server from which they can get certain extra information. Custom Option Parameters The following parameters can be set for a custom option: Code This is the code that describes the type of information being sent to the client. A large list of possible codes exists. Type This describes the type of data which will be sent. For example, if the type is String then the data is a character string. Data This is the actual information that will be sent in the lease. This can be one value or a comma separated list. The meaning of the data is determined by the Code and Type. For example, if the code is set to 66 (TFTP server name) then the Type could be String and the Data would then be a site name such as tftp.mycompany.com. There is a large number of custom options which can be associated with a single DHCP server and these are described in: RFC 2132 - DHCP Options and BOOTP Vendor Extensions The code is entered according to the value specified in RFC 2132. The data associated with the code is first specified in NetDefendOS as a Type followed by the Data. 255