Please Whitelist This Site?

I know everyone hates ads. But please understand that I am providing premium content for free that takes hundreds of hours of time to research and write. I don't want to go to a pay-only model like some sites, but when more and more people block ads, I end up working for free. And I have a family to support, just like you. :)

If you like The TCP/IP Guide, please consider the download version. It's priced very economically and you can read all of it in a convenient format without ads.

If you want to use this site for free, I'd be grateful if you could add the site to the whitelist for Adblock. To do so, just open the Adblock menu and select "Disable on tcpipguide.com". Or go to the Tools menu and select "Adblock Plus Preferences...". Then click "Add Filter..." at the bottom, and add this string: "@@||tcpipguide.com^$document". Then just click OK.

Thanks for your understanding!

Sincerely, Charles Kozierok
Author and Publisher, The TCP/IP Guide


NOTE: Using software to mass-download the site degrades the server and is prohibited.
If you want to read The TCP/IP Guide offline, please consider licensing it. Thank you.

The Book is Here... and Now On Sale!

The whole site in one document for easy reference!
The TCP/IP Guide

Custom Search







Table Of Contents  The TCP/IP Guide
 9  TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)
      9  TCP/IP Network Configuration and Management Protocols (BOOTP, DHCP, SNMP and RMON)
           9  Host Configuration and TCP/IP Host Configuration Protocols (BOOTP and DHCP)
                9  TCP/IP Dynamic Host Configuration Protocol (DHCP)
                     9  DHCP Messaging, Message Types and Formats

Previous Topic/Section
DHCP Options, Option Format and "Option Overloading"
Previous Page
Pages in Current Topic/Section
1
23456
Next Page
DHCP Client/Server Implementation, Features and Issues
Next Topic/Section

Summary Of DHCP Options / BOOTP Vendor Information Fields
(Page 1 of 6)

BOOTP vendor information fields are used to carry additional vendor-independent configuration parameters. These were used as the basis for DHCP options, which extend the concept to include parameters used to manage the operation of DHCP as a whole, as described in the preceding topic. Since BOOTP vendor information fields and DHCP options are essentially the same (except for the DHCP-specific fields), they are described in the same TCP/IP standard, and hence, in this single Guide topic.

Below I have included a number of tables, organized by the RFC 2132 option categories, that list each of the DHCP options / BOOTP vendor information fields. I have shown each option's Code value, and the length of the Data subfield for the option, in bytes. I have then provided the formal name of the option and a brief description of how it is used. For simplicity, in the tables below I say just “options”; please read “option” as “option / vendor information field”, since they are the same (except, again, the DHCP-specific options.)

There are a lot of options in these tables, and some of them define parameters that are used by somewhat obscure protocols that I may not cover in this Guide, so don't be put off if the brief description is not enough for you to completely understand how each and every option is used. Other options will seem quite familiar to you based on other discussions in this Guide. Note in particular that many of the original BOOTP vendor information fields that are used to communicate the addresses of certain types of servers are now archaic and may no longer be used.


Previous Topic/Section
DHCP Options, Option Format and "Option Overloading"
Previous Page
Pages in Current Topic/Section
1
23456
Next Page
DHCP Client/Server Implementation, Features and Issues
Next Topic/Section

If you find The TCP/IP Guide useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider purchasing a download license of The TCP/IP Guide. Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $



Home - Table Of Contents - Contact Us

The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005

Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.