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Internetworking Protocol (IP) addresses are the unique numeric identifiers required of every device connected to the Internet. They allow for the precise routing of data across very complex worldwide internetworks. The rules for their format and use are governed by the Internet Engineering Task Force (IETF) of the The Internet SOCiety (ISOC). In response to the exponential increase in demand for new IP addresses, the IETF has finalized its revision on IP addressing as IP Version 6, also know as IPng (ng = Next Generation). Key hardware vendors such as Cisco and major Internet Service Providers such as America Online have already announced plans to migrate to IP Version 6.
IP address allocation within an organization requires a lot of long-term planning. This timely publication addresses the administrator and engineer's need to know how IP 6 impacts their enterprise networks.
- Easy-to-read, light technical approach to cellular technology
- Ideal for companies planning a phased migration from IP 4 to IP 6
- Timely publication: The IETF standard was finalized in early 1999 and will begin to be implemented in late 1999/2000. The current IP Version 4 address set will be exhausted by 2003
- The book focuses on planning and configuring networks and devices for IP 6. Specifically, it will cover how to: Increase the IP address size from 32 bits to 128 bits; Support more levels of addressing hierarchy; Support an increased number of addressable nodes; Support simpler auto-configuration of addresses; Improve the scalability of multicast routing by adding a "scope" field to multicast addresses; Use a new "anycast address" to send a packet to any one of a group of nodes
Why this Book is Necessary
Contents of this Book
Chapter 1 Addressing and Subnetting Basic
IP Address Basic
Classful Addressing-Structure an Size of Each Type
The Purpose of Subnetting
The BasicFixed-Length Max
What the Mask Does
Components of a Mask
Binary Determination of Mask Values
Decimal Equivalent Mask Values
Creating Mask for Various Networking Problems
Addresses and Mask Interaction
Reserved and Restricted Address
Determining the range of Addresses within Subnets
Determining Subnet Addresses Given a Single Address and Mask
Chapter 2 Creating an Addressing Plan for Fixed-Length Mask Networks
Determine Addressing Requirements
Review Your Internetwork Design
How Many Subnets Do You Need?
How Many IP Addresses Are Needed in Each Subnet?
Choose the Proper Mask
Consult the Tables
Obtain IP Addresses
From Your Organization's Network Manager
From Your ISP
From Your Internet Registry
Calculate Ranges of IP Addresses for Each Subnet
Doing It the Hard Way
Allocate Addresses to Devices
Assigning Device Addresses
Document Your Work
Keeping Track of What You've Done
In Any Case
Class A Subnetting Table
Class B Subnetting Table
Class C Subnetting Table
Subnet Assignment Worksheet
Chapter 3 Private Addressing and Subnetting Large Networks
Strategies to Conserve Addresses
Public vs Private Address Spaces
Can I Pick My Own?
RFC 1918Private Network Addresses
The Three-Address Blocks
Which to Use When
Strategy for Subnetting a Class A Private Network
Chapter 4 Network Address Translation
Hiding Behind the Router/Firewall
What Is NAT?
How Does NAT Work?
Network Address Translation (Static)
How Does Static NAT Work?
Problems with Static NAT
Network Address Translation (Dynamic)
How Does Dynamic NAT Work?
Problems with Dynamic NAT
Port Address Translation (PAT)
How Does PAT Work?
Problems with PAT
What Are the Advantages?
What Are the Performance Issues?
Proxies and Firewall Capabilities
Stateful Packet Filters
Stateful Packet Filter with Rewrite
Why a Proxy Server Is Really Not a NAT
Shortcomings of SPF
References & Resources
Chapter 5 Variable-Length Subnet Masking
Why Are Variable-Length Masks Necessary?.
Right-sizing Your Subnets
More Addresses or More Useful Addresses?
The Importance of Proper Planning
Creating and Managing Variable-Length Subnets
Analyze Subnet Needs
Enumerate Each Subnet and Number of Required Nodes
Determine Which Mask to Use in Each Subnet
Allocate Addresses Based on Need For Each Subnet
Routing Protocols and VIM
Class C VI~M Problem
Completing the Class C Problem
Template-based Address Assignment
Chapter 6 Routing Issues
Classless Interdomain Routing
From Millions to Thousands of Networks
ISP Address Assignment
Using CIDR Addresses Inside Your Network
Comparison with IGRP
Routing Update Impact
Routing Update Impact
OSPF Implementation Recommendations
IBGP and EBGP Requirements
Chapter 7 Automatic Assignment of IP Addresses with BOOTP and DHCP Objectives
The Role of Dynamic Address Assignment
A Brief History
Address Management with These Tools
Field Descriptions and Comments
BOOTP Process Details
The BOOTP Server Database
How Does DHCP Work?
Interoperation between DHCP and BOOTP
DHCP Address Scopes
Comparing BOOTP and DHCP
How BOOTP Works
DHCP / BOOTP Options
BOOTP, DHCP, and Routed Networks
The BOOTP Relay Agent
The Role of the GIADDR
Other Fields Involved
BOOTP Implementation Checklist
DHCP Implementation Checklist
Chapter 8 Multicast Addressing
What Is Multicast?
Mapping IP Multicast to the Link Layer
Joining the Group
Multicast Routing Protocols
Transient and Permanent Addresses
Scope of Multicast Addresses Using TTL
IP Stacks and Multicast
Efficiency of Bandwidth Usage and Scaling
Chapter 9 IPv6 Addressing
IPv6 Addressing Basics
IPv6 Addressing Scheme Characteristics
A More Flexible Hierarchical Organization of Addresses
Minimizing the Size of Routing Tables
Global Addresses for the Internet and Local Addresses for Intranet
Increased IP Address Size
Increased Addressing Hierarchy Support
Simplified Host Addressing
Simpler Autoconfiguration of Addresses
Improved Scalability of Multicast Routing
The Anycast Address
The Need for Further Development
The Multihoming Problem
Chapter 10 The IPv6 Header
Improved Support for Extension and Option
Flow and Flow Labeling
Authentication and Privacy
Hop-by-Hop Option Header
Encapsulating Security Payload
Destination Options Header
Upper-Layer Protocol Issues
Appendix A Address Assignment
Cost of an IP Address
How to Find an IPv4 Address Delegation
How to Find an IPv6 Address Delegation
- No. of pages:
- © Syngress 2000
- 28th January 2000
- Paperback ISBN:
- eBook ISBN:
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