OSPF-Network-Design

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OSPF Network Design Solutions
(Publisher: Macmillan Computer Publishing)
Author(s):
ISBN: 1578700469
Publication Date: 09/28/98

 

Foreword
Acknowledgment

PART 1 Contemporary Intranets
Chapter 1 Foundations of Networking
Intranets The Latest Stage in the Evolution of Networking
Mainframe/Host Network Model
Client/Server Model
Typical Corporate Intranets
Reacting to Accelerated Network Growth
Managing Accelerated Network Growth
Scaling Performance
Extending Network Reach
Controlling Your Intranet
Understanding the OSI Reference Model
What Is the OSI Reference Model?
Why Was the OSI Reference Model Needed?
Characteristics of the OSI Layers
Understanding the Seven Layers of the OSI Reference Model
Upper Layers (Layers 5, 6, 7 Handle Application Issues)
Lower Layers (Layers 1, 2, 3, 4 Handle Data Transport Issues)
OSI Reference Model Layers and Information Exchange
Headers and Data
How Does the OSI Reference Model Process Work?
Open Systems Interconnection (OSI) Protocols
Intranet Topologies
Local Area Networks (LANs)
Wide Area Networks (WANs)
Summary
Chapter 2 Networking Routing Fundamentals
Internet Protocol (IP) Addressing
Class A Addresses
Class B Addresses
Class C Addresses
Class D Addresses
Class E Addresses
How IP Addresses Are Used
How IP Addresses Are Read
The Role of IP Addresses
IP Subnet Addressing
Subnet Masking
Subnetting Restrictions
Explaining the Need for VLSM and CIDR
Route Summarization (Aggregation or Supernetting)
Classful Routing
Classless Routing
Variable-Length Subnet Masks (VLSM)
VLSM Design Guidelines & Techniques
Classless Interdomain Routing (CIDR)
Validating a CIDRized Network
What Do Those /16s and /24s Mean?
Important CIDR Terms
IP Classless
CIDR Translation Table
Manually Computing the Value of a CIDR IP Prefix
Internetwork Components
Networks
Bridges
Gateways
Hubs
Switches
LAN Switches
Packet Switches
CSU
DSU
Router
Routing
Component Interaction with the OSI Model
Understanding Router Subinterfaces
Point-to-Point Subinterfaces
Multipoint Subinterfaces
Network Protocols
TCP/IP Protocol Suite
Basic Protocol Operations
Chapter Summary
Case Study: Where Is the Network Broken?
Verifying the Physical Connection Between the DSU/CSU and the Router
Verifying That the Router and Frame Relay Provider Are Properly Exchanging LMI
Verifying That DSU/CSU Parameters Are Properly Configured
Verifying That the PVC Status Is Active
Verifying That the Frame Relay Encapsulation Matches on Both Routers
Frequently Asked Questions (FAQs)
Chapter 3 Understanding & Selecting Network Protocols
Routing Protocols
Routing Concepts
Routing Updates
Switching Algorithms
Routing Algorithm Design Goals
Routing Algorithm Types
Algorithm Metrics
Distance Vector Protocols
Routing Information Protocol (RIP)
RIP Specifications
Key Characteristics of RIP
Routing with RIP
RIP Routing Updates
RIP Timers
Increasing RIP Stability
RIP Packet Format
Configuring RIP
Link State Protocols
The Link-State Database
Integrated Intermediate System-to-Intermediate System (IS-IS)
Selecting a Routing Protocol
Operational Considerations
Technical Considerations
Business Considerations
Chapter Summary
Case Study: Configuring a RIP Network
Frequently Asked Questions

PART 2 OSPF Routing & Network Design
Chapter 4 Introduction to OSPF
OSPF Overview
The Development and Evolution of OSPF
OSPF RFCs
RFC Conclusions
OSPF Functional Environment
OSPF Network Types
Router Identification
Neighbors
Adjacencies
Designated Routers (DRs)
Protocols Within OSPF
Link-State Advertisement (LSA)
Link-State Database
OSPF Routing Hierarchy
Types of OSPF Routers
Hierarchical Network Design Techniques
Understanding Autonomous Systems
Understanding Areas
Routing Within a Hierarchical Structure
Chapter Summary
Case Study: Adding a New OSPF Router to a Network
Case Study: Dynamic IP Routing (OSPF) Using IP Unnumbered Point-To-Point Subinterfaces
Frequently Asked Questions
Solutions to Common OSPF Problems
OSPF Routers Not Establishing Neighbors
OSPF Routes Missing from Routing Table
Chapter 5 The Fundamentals of OSPF Routing & Design
OSPF Algorithms
OSPF Cost
Shortest Path Tree
OSPF Convergence
Detecting Changes to the Network Topology
Rapid Recalculation of Routes
OSPF Design Guidelines
OSPF Network Topology
OSPF Network Scalability
Area Design Considerations
Justifying the Use of Areas and Multiple Areas
Non-Stub Area Characteristics
The LSDB Within an Area
Area Partitions: Outages or Network Growth?
The Golden Rules of Area Design
Critical Aspects of Area Design
Designing the Backbone Area
Stub Areas
OSPF Route Selection
Tuning OSPF Metrics
Controlling Inter-Area Traffic
Load Balancing in OSPF Internetworks
OSPF IP Addressing & Route Summarization
IP Addressing & Route Summarization Design Golden Rules
OSPF Route Summarization Techniques
Route Summarization and Route Distribution
OSPF Addressing and Summarization Scenarios
VLSM in OSPF
Chapter Summary
OSPF Case Study: Point-to-Multipoint Link Networks
Router Configuration Examples
Case Study Conclusion
Frequently Asked Questions
Chapter 6 Advanced OSPF Design Concepts
OSPF Redistribution
Redistributing Routes into OSPF
Redistributing OSPF into Other Protocols
Mutual Route Redistribution
Injecting Default Routes into OSPF
Designing OSPF On-Demand Circuits
Golden Rules for Designing Demand Circuits
Dial On-Demand Design Scenarios
OSPF Configuration Commands
area authentication
area default-cost
area-id
area nssa
area range
area stub
area virtual-link
default-information originate
default-metric
distance
distribute-list out
ip ospf authentication-key
ip ospf cost
ip ospf dead-interval
ip ospf demand circuit
ip ospf hello-interval
ip ospf message-digest-key
ip ospf name-lookup
ip ospf network
ip ospf priority
ip ospf retransmit-interval
ip ospf transmit-delay
ip policy route-map
neighbor (OSPF)
network area
ospf auto-cost-determination
ospf log-adj-changes
passive-interface
redistribute
route-map
router ospf
set level
set metric
set metric-type
summary-address
timers spf
OSPF Error Messages
%OSPF-4-BADLENGTH Error Message
%OSPF-4-BADLSATYPE Error Message
%OSPF-4-CONFLICTING_LSAID Error Message
%OSPF-4-ERRRCV Error Message
%OSPF-3-INTERNALERR Error Message
%OSPF-3-NOBACKBONE Error Message
%OSPF-3-NOCONNDB Error Message
%OSPF-3-NOLSA Error Message
%OSPF-3-NOMEMORY Error Message
%OSPF-4-NONEIGHBOR Error Message
%OSPF-4-NORTRID Error Message
%OSPF-6-NOSRCPDB Error Message
%OSPF-6-NOTREDIST1 Error Message
%OSPF-6-NOTREDIST3 Error Message
%OSPF-4-NOTREDIST4 Error Message
%OSPF-4-NOTREDIST5 Error Message
%OSPF-4-OSPFINTDOWN Error Message
%OSPF-3-UNKNOWNSTATE Error Message
%OSPF-4-VIRTUAL_IN_NON_BACKBONE Error Message
Chapter Summary
Case Study: RIP and OSPF Redistribution
Configuring a RIP Network
Adding OSPF to the Center of a RIP Network
Adding OSPF Areas
Setting Up Mutual Redistribution
Case Study Conclusion
Frequently Asked Questions

PART 3 OSPF Implementation, Troubleshooting & Management
Chapter 7 Designing & Implementing an OSPF Network
OSPF Network Design
Cisco s Implementation of OSPF
Network Design Goals
Network Design Issues
Network Design Methodology
Configuring OSPF on Cisco Routers
Enabling OSPF on an Inter-Area Router
Configuring an Area Border Router (ABR)
Configuring an Autonomous System Boundary Router (ASBR)
Configuring a Backbone Router
Configuring a Simplex Ethernet or Serial Interface
Configuring OSPF Tunable Parameters
Configuring OSPF for Different Network Types
Configuring OSPF Area Parameters
Configuring OSPF Not-So-Stubby Areas (NSSAs)
Configuring Route Summarization Between OSPF Areas
Configuring Lookup of DNS Names
Forcing the Router ID Choice with a Loopback Interface
Disable Default OSPF Metric Calculation Based on Bandwidth
Configuring OSPF Over On-Demand Circuits
Multicast OSPF
OSPF and the Multi-Protocol Router (MPR)
Chapter Summary
Case Study: Designing an OSPF Frame Relay Network
Wide Area Network Design Requirements
OSPF Network Design
Case Study Conclusions
Frequently Asked Questions
Chapter 8 Monitoring & Troubleshooting an OSPF Network
Monitoring OSPF
Monitoring the Operation of OSPF
OSPF SHOW Commands
Troubleshooting OSPF
Preparing for Network Failure
Troubleshooting Methodology
System Logging (SYSLOG)
OSPF debug Commands
Simple IP Troubleshooting Tools
Cisco Technical Support
Gathering Network Information
Cisco Connection Online (CCO)
Chapter Summary
Case Study: In the Trenches with OSPF
Troubleshooting Methodology
Customer Reports a Network Slowdown
Problem #2: Performance Issues
Case Study Conclusion and Design Tips
Frequently Asked Questions (FAQs)
Chapter 9 Managing Your OSPF Network
Network Management
Network Management Tools
The SNMP-based Internet Management Model
Simple Network Management Protocol (SNMP)
Introduction to SNMP
SNMP Operation
SNMP Messages
Cisco s SNMP Implementation
Additional Resources on SNMP Operation
Management Information Base (MIB)
Management Information Base (MIB) Components
MIBs and SNMP Interactions
Managing a Network with MIBs
Accessing Cisco MIB Files
OSPF MIBs
The Entrance of Remote Monitoring (RMON) Technology
Chapter Summary
Frequently Asked Questions (FAQs)

PART 4 Network Security & Future Expansion
Chapter 10 Securing Your OSPF Network
Network Security
Vulnerabilities in Cisco CHAP Authentication
TCP Loopback DoS Attack (land.c) and Cisco Devices
Smurfing Denial of Service (DoS) Attacks
TCP SYN Denial of Service Attacks & Defense Strategies
Attacks on Network Devices & Defense Strategies
UDP Diagnostic Port Denial of Service Attacks
Cisco IOS Password Encryption
Assessing the Need for Security
Golden Rules of Designing A Secure Network
Document Your Security Plan
Know Your Enemy
Count the Cost
Identify Your Assumptions
Control & Limit Your Secrets
Remember Human Factors
Know Your Weaknesses
Limit the Scope of Access
Understand Your Environment
Limit Your Trust
Remember Physical Security
Security Is Persuasive
Additional Resources on Network Security
Securing Your OSPF Network
Controlling Access to Network Equipment
Increasing SNMP Security
Network Data Encryption
OSPF Neighbor Router Authentication
Configuring Traffic Filters
Access Lists
Lock-and-Key Security (Dynamic Access Lists)
Chapter Summary
Case Study: Designing Your Router Firewall Architecture
Controlling Traffic Flow
Configuring the Firewall Router
Applying Access Lists to Interfaces
Configuring the Firewall Communication Server
Spoofing & In Bound Access Lists
Well-Known Port Assignments
Additional Firewall Security Considerations
Frequently Asked Questions
Chapter 11 The Continuing Evolution of OSPF
OSPF Standardization Report
OSPF for IPv6
Abstract
Draft Summary
OSPF Address Resolution Advertisement Option
Abstract
Draft Summary
OSPFv2 Domain of Interpretation (DOI) for ISAKMP
Abstract
Draft Summary
OSPF NSSA Option
Abstract
Draft Summary
OSPF Opaque LSA
Abstract
Draft Summary
OSPF Over ATM and Proxy PAR
Abstract
Draft Summary
Techniques in OSPF-Based Network Deployment
Abstract
Draft Summary
OSPF Multiple Area Links
Abstract
Draft Summary
OSPF Optimized Multipath (OSPF-OMP)
Abstract
Draft Summary
Chapter Summary
Case Study: NetFlow Switching
NetFlow Requirements and Deployment Strategy
NetFlow Operation
Frequently Asked Questions
Chapter 12 Future Network Considerations
Simple Network Management Protocol (SNMP): Continuing Evolution
Basic SNMP Architecture
SNMPv2: A Brief Introduction
SNMPv2 Operational Enhancements
The SNMPv3 Effort
Remote Monitoring (RMON)
RMON Overview
RMON1
RMON2
RMON Configuration Example
SNMP Versus RMON
SNMP and RMON: Network Management Standards
What Is the Difference Between RMON and SNMP?
Conclusions on SNMP Versus RMON
Internet Protocol Addressing v6 (IPv6)
Myth 1: We Need IPv6 Because We Are Running Out of Address Space!
Myth 2: We Can Patch IPv4 to Duplicate IPv6
Myth 3: IPv6 Will Only Benefit Hierarchical Networks
Myth 4: Who Needs the Ability to Assign Addresses to a Large Number of Diverse Network Devices?
IPv6 Design Goals
Addressing and Routing
Transitioning and Implementing IPv6
Expanded Addressing Capabilities
IPv6 Headers
IPv6 Header Extensions
Chapter Summary
Case Study: Implementing IPv6 in Your Network
Frequently Asked Questions
Bibliography
Appendix A
Index


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March 22, 2003



OSPF Network Design Solutions
OSPF Network Design Solutions
ISBN: 1578700469
EAN: 2147483647
Year: 1998
Pages: 200
Authors: Tom Thomas

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