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!

Read offline with no ads or diagram watermarks!
The TCP/IP Guide

Custom Search







Table Of Contents  The TCP/IP Guide
 9  TCP/IP Lower-Layer (Interface, Internet and Transport) Protocols (OSI Layers 2, 3 and 4)
      9  TCP/IP Internet Layer (OSI Network Layer) Protocols
           9  Internet Protocol (IP/IPv4, IPng/IPv6) and IP-Related Protocols (IP NAT, IPSec, Mobile IP)
                9  Internet Protocol Mobility Support (Mobile IP)

Previous Topic/Section
Mobile IP Agent Discovery, and Agent Advertisement and Solicitation Messages
Previous Page
Pages in Current Topic/Section
123
4
Next Page
Mobile IP Data Encapsulation and Tunneling
Next Topic/Section

Mobile IP Home Agent Registration and Registration Messages
(Page 4 of 4)

Registration Reply Message Format

Registration Reply messages are formatted as shown in Table 84 and Figure 133.


Table 84: Mobile IP Registration Reply Message Format

Field Name

Size (bytes)

Description

Type

1

Type: Identifies the registration message type. For a reply, this field is 3.

Code

1

Code: Indicates the result of the registration request. This field is set to 0 if the registration was accepted, 1 if it was accepted but simultaneous bindings were requested and are not supported. If the registration was denied, a different reason code is provided that indicates the reason for the rejection, as well as whether it was the home agent or foreign agent that denied it.

Lifetime

2

Lifetime: If the registration was accepted, the length of time in seconds until the registration expires. This may of course be a different value than the mobile node requested.

Home Address

4

Home Address: The home (normal) IP address of the mobile node when on its home network. Uniquely identifies the device regardless of how the request is conveyed to the home agent, so the message can be delivered to it if multiple mobile nodes are served by the same foreign agent.

Home Agent

4

Home Agent: The IP address of the device acting as the mobile node's home agent.

Identification

8

Identification: A 64-bit number that uniquely identifies the Registration Reply and is matched to the Identification field of the request that precipitated it.

Extensions

Variable

Extensions: Extension fields are included here for authentication of the reply. Other extensions may also be included.



Figure 133: Mobile IP Registration Reply Message Format

This message is carried in the payload of a User Datagram Protocol (UDP) message, the headers of which are not shown.

 


Previous Topic/Section
Mobile IP Agent Discovery, and Agent Advertisement and Solicitation Messages
Previous Page
Pages in Current Topic/Section
123
4
Next Page
Mobile IP Data Encapsulation and Tunneling
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.