Books & Videos

Table of Contents

  1. Chapter 1 Router Configuration and File Management

    1. Introduction

    2. Configuring the Router via TFTP

    3. Saving Router Configuration to Server

    4. Booting the Router Using a Remote Configuration File

    5. Storing Configuration Files Larger than NVRAM

    6. Clearing the Startup Configuration

    7. Loading a New IOS Image

    8. Booting a Different IOS Image

    9. Booting Over the Network

    10. Copying an IOS Image to a Server

    11. Copying an IOS Image Through the Console

    12. Deleting Files from Flash

    13. Partitioning Flash

    14. Using the Router as a TFTP Server

    15. Using FTP from the Router

    16. Generating Large Numbers of Router Configurations

    17. Changing the Configurations of Many Routers at Once

    18. Extracting Hardware Inventory Information

    19. Backing Up Router Configurations

  2. Chapter 2 Router Management

    1. Introduction

    2. Creating Command Aliases

    3. Managing the Router’s ARP Cache

    4. Tuning Router Buffers

    5. Using the Cisco Discovery Protocol

    6. Disabling the Cisco Discovery Protocol

    7. Using the Small Servers

    8. Enabling HTTP Access to a Router

    9. Using Static Hostname Tables

    10. Enabling Domain Name Service

    11. Disabling Domain Name Lookups

    12. Specifying a Router Reload Time

    13. Creating Exception Dump Files

    14. Generating a Report of Interface Information

    15. Generating a Report of Routing Table Information

    16. Generating a Report of ARP Table Information

    17. Generating a Server Host Table File

  3. Chapter 3 User Access and Privilege Levels

    1. Introduction

    2. Setting Up User IDs

    3. Encrypting Passwords

    4. Using Better Encryption Techniques

    5. Removing Passwords from a Router Configuration File

    6. Deciphering Cisco’s Weak Password Encryption

    7. Displaying Active Users

    8. Sending Messages to Other Users

    9. Changing the Number of VTYs

    10. Changing VTY Timeouts

    11. Restricting VTY Access by Protocol

    12. Enabling Absolute Timeouts on VTY Lines

    13. Implementing Banners

    14. Disabling Banners on a Port

    15. Disabling Router Lines

    16. Reserving a VTY Port for Administrative Access

    17. Restricting Inbound Telnet Access

    18. Logging Telnet Access

    19. Setting the Source Address for Telnet

    20. Automating the Login Sequence

    21. Using SSH for Secure Access

    22. Changing the Privilege Level of IOS Commands

    23. Defining Per-User Privileges

    24. Defining Per-Port Privileges

  4. Chapter 4 TACACS+

    1. Introduction

    2. Authenticating Login IDs from a Central System

    3. Restricting Command Access

    4. Losing Access to the TACACS+ Server

    5. Disabling TACACS+ Authentication on a Particular Line

    6. Capturing User Keystrokes

    7. Logging System Events

    8. Setting the IP Source Address for TACACS+ Messages

    9. Obtaining Free TACACS+ Server Software

    10. Sample Server Configuration Files

  5. Chapter 5 IP Routing

    1. Introduction

    2. Finding an IP Route

    3. Finding Types of IP Routes

    4. Converting Different Mask Formats

    5. Using Static Routing

    6. Floating Static Routes

    7. Using Policy-Based Routing to Route Based on Source Address

    8. Using Policy-Based Routing to Route Based on Application Type

    9. Examining Policy-Based Routing

    10. Changing Administrative Distances

    11. Routing Over Multiple Paths with Equal Costs

  6. Chapter 6 RIP

    1. Introduction

    2. Configuring RIP Version 1

    3. Filtering Routes with RIP

    4. Redistributing Static Routes into RIP

    5. Redistributing Routes Using Route Maps

    6. Creating a Default Route in RIP

    7. Disabling RIP on an Interface

    8. Unicast Updates for RIP

    9. Applying Offsets to Routes

    10. Adjusting Timers

    11. Configuring Interpacket Delay

    12. Enabling Triggered Updates

    13. Increasing the RIP Input Queue

    14. Configuring RIP Version 2

    15. Enabling RIP Authentication

    16. RIP Route Summarization

    17. Route Tagging

  7. Chapter 7 EIGRP

    1. Introduction

    2. Configuring EIGRP

    3. Filtering Routes with EIGRP

    4. Redistributing Routes into EIGRP

    5. Redistributing Routes into EIGRP Using Route Maps

    6. Creating a Default Route in EIGRP

    7. Disabling EIGRP on an Interface

    8. EIGRP Route Summarization

    9. Adjusting EIGRP Metrics

    10. Adjusting Timers

    11. Enabling EIGRP Authentication

    12. Logging EIGRP Neighbor State Changes

    13. Limiting EIGRP’s Bandwidth Utilization

    14. EIGRP Stub Routing

    15. Route Tagging

    16. Viewing EIGRP Status

  8. Chapter 8 OSPF

    1. Introduction

    2. Configuring OSPF

    3. Filtering Routes in OSPF

    4. Adjusting OSPF Costs

    5. Creating a Default Route in OSPF

    6. Redistributing Static Routes into OSPF

    7. Redistributing External Routes into OSPF

    8. Manipulating DR Selection

    9. Setting the OSPF RID

    10. Enabling OSPF Authentication

    11. Selecting the Appropriate Area Types

    12. Summarizing Routes in OSPF

    13. Disabling OSPF on Certain Interfaces

    14. OSPF Route Tagging

    15. Logging OSPF Adjacency Changes

    16. Adjusting OSPF Timers

    17. Viewing OSPF Status with Domain Names

    18. Debugging OSPF

  9. Chapter 9 BGP

    1. Introduction

    2. Configuring BGP

    3. Using eBGP Multihop

    4. Adjusting the Next-Hop Attribute

    5. Connecting to Two ISPs

    6. Connecting to Two ISPs with Redundant Routers

    7. Restricting Networks Advertised to a BGP Peer

    8. Adjusting Local Preference Values

    9. Load Balancing

    10. Removing Private ASNs from the AS Path

    11. Filtering BGP Routes Based on AS Paths

    12. Reducing the Size of the Received Routing Table

    13. Summarizing Outbound Routing Information

    14. Prepending ASNs to the AS Path

    15. Redistributing Routes with BGP

    16. Using Peer Groups

    17. Authenticating BGP Peers

    18. Putting It All Together

  10. Chapter 10 Frame Relay

    1. Introduction

    2. Setting Up Frame Relay with Point-to-Point Subinterfaces

    3. Adjusting LMI Options

    4. Setting Up Frame Relay with Map Statements

    5. Using Multipoint Subinterfaces

    6. Configuring Frame Relay SVCs

    7. Simulating a Frame Relay Cloud

    8. Compressing Frame Relay Data on a Subinterface

    9. Compressing Frame Relay Data with Maps

    10. Viewing Frame Relay Status Information

  11. Chapter 11 Queueing and Congestion

    1. Introduction

    2. Fast Switching and CEF

    3. Setting the DSCP or TOS Field

    4. Using Priority Queueing

    5. Using Custom Queueing

    6. Using Custom Queues with Priority Queues

    7. Using Weighted Fair Queueing

    8. Using Class-Based Weighted Fair Queueing

    9. Controlling Congestion with WRED

    10. Using RSVP

    11. Using Generic Traffic Shaping

    12. Using Frame-Relay Traffic Shaping

    13. Using Committed Access Rate

    14. Implementing Standards-Based Per-Hop Behavior

    15. Viewing Queue Parameters

  12. Chapter 12 Tunnels and VPNs

    1. Introduction

    2. Creating a Tunnel

    3. Tunneling Foreign Protocols in IP

    4. Tunneling with Dynamic Routing Protocols

    5. Viewing Tunnel Status

    6. Creating an Encrypted Router-to-Router VPN

    7. Generating RSA Keys

    8. Creating a Router-to-Router VPN with RSA Keys

    9. Creating a VPN Between a Workstation and a Router

    10. Check IPSec Protocol Status

  13. Chapter 13 Dial Backup

    1. Introduction

    2. Automating Dial Backup

    3. Using Dialer Interfaces

    4. Using an Async Modem on the AUX Port

    5. Using Backup Interfaces

    6. Using Dialer Watch

    7. Ensuring Proper Disconnection

    8. View Dial Backup Status

    9. Debugging Dial Backup

  14. Chapter 14 NTP and Time

    1. Introduction

    2. Timestamping Router Logs

    3. Setting the Time

    4. Setting the Time Zone

    5. Adjusting for Daylight Saving Time

    6. Synchronizing the Time on All Routers (NTP)

    7. Configuring NTP Redundancy

    8. Setting the Router as the NTP Master for the Network

    9. Changing NTP Synchronization Periods

    10. Using NTP to Send Periodic Broadcast Time Updates

    11. Using NTP to Send Periodic Multicast Time Updates

    12. Enabling and Disabling NTP Per Interface

    13. NTP Authentication

    14. Limiting the Number of Peers

    15. Restricting Peers

    16. Setting the Clock Period

    17. Checking the NTP Status

    18. Debugging NTP

  15. Chapter 15 DLSw

    1. Introduction

    2. Configuring DLSw

    3. Using DLSw to Bridge Between Ethernet and Token Ring

    4. Converting Ethernet and Token Ring MAC Addresses

    5. Configuring SDLC

    6. Configuring SDLC for Multidrop Connections

    7. Using STUN

    8. Using BSTUN

    9. Controlling DLSw Packet Fragmentation

    10. Tagging DLSw Packets for QoS

    11. Supporting SNA Priorities

    12. DLSw+ Redundancy and Fault Tolerance

    13. Viewing DLSw Status Information

    14. Viewing SDLC Status Information

    15. Debugging DSLw

  16. Chapter 16 Router Interfaces and Media

    1. Introduction

    2. Viewing Interface Status

    3. Configuring Serial Interfaces

    4. Using an Internal T1 CSU/DSU

    5. Using an Internal ISDN PRI Module

    6. Using an Internal 56Kbps CSU/DSU

    7. Configuring an Async Serial Interface

    8. Configuring ATM Subinterfaces

    9. Setting Payload Scrambling on an ATM Circuit

    10. Configuring Ethernet Interface Features

    11. Configuring Token Ring Interface Features

    12. Connecting VLAN Trunks With ISL

    13. Connecting VLAN Trunks with 802.1Q

  17. Chapter 17 Simple Network Management Protocol

    1. Introduction

    2. Configuring SNMP

    3. Extracting Router Information via SNMP Tools

    4. Recording Important Router Information for SNMP Access

    5. Extracting Inventory Information from a List of Routers with SNMP

    6. Using Access Lists to Protect SNMP Access

    7. Logging Unauthorized SNMP Attempts

    8. Limiting MIB Access

    9. Using SNMP to Modify a Router’s Running Configuration

    10. Using SNMP to Copy a New IOS Image

    11. Using SNMP to Perform Mass Configuration Changes

    12. Preventing Unauthorized Configuration Modifications

    13. Making Interface Table Numbers Permanent

    14. Enabling SNMP Traps and Informs

    15. Sending syslog Messages as SNMP Traps and Informs

    16. Setting SNMP Packet Size

    17. Setting SNMP Queue Size

    18. Setting SNMP Timeout Values

    19. Disabling Link Up/Down Traps per Interface

    20. Setting the IP Source Address for SNMP Traps

    21. Using RMON to Send Traps

    22. Enabling SNMPv3

    23. Using SAA

  18. Chapter 18 Logging

    1. Introduction

    2. Enabling Local Router Logging

    3. Setting the Log Size

    4. Clearing the Router’s Log

    5. Sending Log Messages to Your Screen

    6. Using a Remote Log Server

    7. Enabling Syslog on a Unix Server

    8. Changing the Default Log Facility

    9. Restricting What Log Messages Are Sent to the Server

    10. Setting the IP Source Address for Syslog Messages

    11. Logging Router Syslog Messages in Different Files

    12. Maintaining Syslog Files on the Server

    13. Testing the Syslog Sever Configuration

    14. Preventing the Most Common Messages from Being Logged

    15. Rate-Limiting Syslog Traffic

  19. Chapter 19 Access Lists

    1. Introduction

    2. Filtering by Source or Destination IP Address

    3. Adding a Comment to an ACL

    4. Filtering by Application

    5. Filtering Based on TCP Header Flags

    6. Restricting TCP Session Direction

    7. Filtering Multiport Applications

    8. Filtering Based on DSCP and TOS

    9. Logging when an Access List Is Used

    10. Logging TCP Sessions

    11. Analyzing ACL Log Entries

    12. Using Named and Reflexive Access Lists

    13. Dealing with Passive Mode FTP

    14. Using Context-Based Access Lists

  20. Chapter 20 DHCP

    1. Introduction

    2. Using IP Helper Addresses for DHCP

    3. Limiting the Impact of IP Helper Addresses

    4. Using DHCP to Dynamically Configure Router IP Addresses

    5. Dynamically Allocating Client IP Addresses via DHCP

    6. Defining DHCP Configuration Options

    7. Defining DHCP Lease Periods

    8. Allocating Static IP Addresses with DHCP

    9. Configuring a DHCP Database Client

    10. Configuring Multiple DHCP Servers per Subnet

    11. Showing DHCP Status

    12. Debugging DHCP

  21. Chapter 21 NAT

    1. Introduction

    2. Configuring Basic NAT Functionality

    3. Allocating External Addresses Dynamically

    4. Allocating External Addresses Statically

    5. Translating Some Addresses Statically and Others Dynamically

    6. Translating in Both Directions Simultaneously

    7. Rewriting the Network Prefix

    8. Adjusting NAT Timers

    9. Changing TCP Ports for FTP

    10. Checking NAT Status

    11. Debugging NAT

  22. Chapter 22 Hot Standby Router Protocol

    1. Introduction

    2. Configuring Basic HSRP Functionality

    3. Using HSRP Preempt

    4. Making HSRP React to Problems on Other Interfaces

    5. Load Balancing with HSRP

    6. Redirecting ICMP with HSRP

    7. Manipulating HSRP Timers

    8. Using HSRP on a Token Ring Network

    9. HSRP SNMP Support

    10. Increasing HSRP Security

    11. Showing HSRP State Information

    12. Debugging HSRP

  23. Chapter 23 IP Multicast

    1. Introduction

    2. Configuring Basic Multicast Functionality with PIM-DM

    3. Routing Multicast Traffic with PIMSM and BSR

    4. Routing Multicast Traffic with PIM-SM and Auto-RP

    5. Configuring Routing for a Low Frequency Multicast Application

    6. Configuring CGMP

    7. Static Multicast Routes and Group Memberships

    8. Routing Multicast Traffic with MOSPF

    9. Routing Multicast Traffic with DVMRP

    10. DVMRP Tunnels

    11. Controlling Multicast Scope with TTL

    12. Using Administratively Scoped Addressing

    13. Exchanging Multicast Routing Information with MBGP

    14. Using MSDP to Discover External Sources

    15. Converting Broadcasts to Multicasts

    16. Showing Multicast Status

    17. Debugging Multicast Routing

  1. Appendix External Software Packages

    1. Perl

    2. Expect

    3. NET-SNMP

    4. PuTTY

    5. OpenSSH

    6. Ethereal

  2. Appendix IP Precedence, TOS, and DSCP Classifications

    1. Combining TOS and IP Precedence to Mimic DSCP

    2. RSVP

    3. Queueing Algorithms

    4. Dropping Packets and Congestion Avoidance

  3. Colophon