Cisco IOS Cookbook. 2nd Edition - Helion
ebook
Autor: Kevin Dooley, Ian BrownISBN: 978-05-965-5482-8
stron: 1192, Format: ebook
Data wydania: 2006-12-22
Księgarnia: Helion
Cena książki: 169,15 zł (poprzednio: 196,69 zł)
Oszczędzasz: 14% (-27,54 zł)
Never has something cried out for a cookbook quite as much as Cisco's Internetwork Operating System (IOS). IOS is powerful and flexible, but also confusing and daunting. Most tasks can be accomplished in several different ways. And you don't want to spend precious time figuring out which way is best when you're trying to solve a problem quickly.
That's what this cookbook is for. Fortunately, most router configuration tasks can be broken down into several more or less independent steps: you configure an interface, you configure a routing protocol, you set up backup links, you implement packet filters and other access control mechanisms. What you really need is a set of recipes that show you how to perform the most common tasks, so you can quickly come up with a good configuration for your site. And you need to know that these solutions work: you don't want to find yourself implementing a backup link at 2 A.M. because your main link is down and the backup link you set up when you installed the router wasn't quite right.
Thoroughly revised and expanded, Cisco IOS Cookbook, 2nd Edition, adds sections on MPLS, Security, IPv6, and IP Mobility, and presents solutions to the most common configuration problems, including:
- Configuring interfaces of many types, from serial to ATM and Frame Relay
- Configuring all of the common IP routing protocols (RIP, EIGRP, OSPF, and BGP)
- Configuring authentication
- Configuring other services, including DHCP and NTP
- Setting up backup links, and using HSRP to configure backup routers
- Managing the router, including SNMP and other solutions
- Using access lists to control the traffic through the router
If you work with Cisco routers, you need a book like this to help you solve problems quickly and effectively. Even if you're experienced, the solutions and extensive explanations will give you new ideas and insights into router configuration. And if you're not experienced--if you've just been given responsibility for managing a network with Cisco routers--this book could be a job-saver.
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Spis treści
Cisco IOS Cookbook. 2nd Edition eBook -- spis treści
- Cisco IOS Cookbook
- SPECIAL OFFER: Upgrade this ebook with OReilly
- A Note Regarding Supplemental Files
- Preface
- Whats New in This Edition
- Organization
- Whats in This Book
- Conventions Used in This Book
- Using Code Examples
- Wed Like Your Feedback!
- Safari Enabled
- Acknowledgments
- Kevin Dooley
- Ian J. Brown
- 1. Router Configuration and File Management
- Introduction
- IOS
- Configuring the Router via TFTP
- Problem
- Solution
- Discussion
- See Also
- Saving Router Configuration to Server
- Problem
- Solution
- Discussion
- See Also
- Booting the Router Using a Remote Configuration File
- Problem
- Solution
- Discussion
- See Also
- Storing Configuration Files Larger Than NVRAM
- Problem
- Solution
- Discussion
- See Also
- Clearing the Startup Configuration
- Problem
- Solution
- Discussion
- See Also
- Loading a New IOS Image
- Problem
- Solution
- Discussion
- See Also
- Booting a Different IOS Image
- Problem
- Solution
- Discussion
- See Also
- Booting over the Network
- Problem
- Solution
- Discussion
- See Also
- Copying an IOS Image to a Server
- Problem
- Solution
- Discussion
- See Also
- Copying an IOS Image Through the Console
- Problem
- Solution
- Discussion
- Deleting Files from Flash
- Problem
- Solution
- Discussion
- See Also
- Partitioning Flash
- Problem
- Solution
- Discussion
- See Also
- Using the Router as a TFTP Server
- Problem
- Solution
- Discussion
- See Also
- Using FTP from the Router
- Problem
- Solution
- Discussion
- See Also
- Generating Large Numbers of Router Configurations
- Problem
- Solution
- Discussion
- See Also
- Changing the Configurations of Many Routers at Once
- Problem
- Solution
- Discussion
- See Also
- Extracting Hardware Inventory Information
- Problem
- Solution
- Discussion
- See Also
- Backing Up Router Configurations
- Problem
- Solution
- Discussion
- See Also
- Warm Reload
- Problem
- Solution
- Discussion
- See Also
- Warm Upgrade
- Problem
- Solution
- Discussion
- See Also
- Configuration Archiving
- Problem
- Solution
- Discussion
- See Also
- Locking Configuration Access
- Problem
- Solution
- Discussion
- Introduction
- 2. Router Management
- Introduction
- Creating Command Aliases
- Problem
- Solution
- Discussion
- Managing the Routers ARP Cache
- Problem
- Solution
- Discussion
- Tuning Router Buffers
- Problem
- Solution
- Discussion
- Auto Tuning Buffers
- Problem
- Solution
- Discussion
- See Also
- Using the Cisco Discovery Protocol
- Problem
- Solution
- Discussion
- See Also
- Disabling the Cisco Discovery Protocol
- Problem
- Solution
- Discussion
- See Also
- Using the Small Servers
- Problem
- Solution
- Discussion
- See Also
- Enabling HTTP Access to a Router
- Problem
- Solution
- Discussion
- See Also
- Enabling Secure HTTP (HTTPS) Access to a Router
- Problem
- Solution
- Discussion
- See Also
- Using Static Hostname Tables
- Problem
- Solution
- Discussion
- See Also
- Enabling Domain Name Services
- Problem
- Solution
- Discussion
- See Also
- Disabling Domain Name Lookups
- Problem
- Solution
- Discussion
- See Also
- Specifying a Router Reload Time
- Problem
- Solution
- Discussion
- See Also
- Scheduling of Router Commands
- Problem
- Solution
- Discussion
- See Also
- Displaying Historical CPU Values
- Problem
- Solution
- Discussion
- Creating Exception Dump Files
- Problem
- Solution
- Discussion
- See Also
- Generating a Report of Interface Information
- Problem
- Solution
- Discussion
- See Also
- Generating a Report of Routing Table Information
- Problem
- Solution
- Discussion
- See Also
- Generating a Report of ARP Table Information
- Problem
- Solution
- Discussion
- See Also
- Generating a Server Host Table File
- Problem
- Solution
- Discussion
- See Also
- 3. User Access and Privilege Levels
- Introduction
- Setting Up User IDs
- Problem
- Solution
- Discussion
- See Also
- Encrypting Passwords
- Problem
- Solution
- Discussion
- See Also
- Using Better Password-Encryption Techniques
- Problem
- Solution
- Discussion
- See Also
- Removing Passwords from a Router Configuration File
- Problem
- Solution
- Discussion
- See Also
- Deciphering Ciscos Weak Password Encryption
- Problem
- Solution
- Discussion
- See Also
- Displaying Active Users
- Problem
- Solution
- Discussion
- See Also
- Sending Messages to Other Users
- Problem
- Solution
- Discussion
- See Also
- Changing the Number of VTYs
- Problem
- Solution
- Discussion
- See Also
- Changing VTY Timeouts
- Problem
- Solution
- Discussion
- See Also
- Restricting VTY Access by Protocol
- Problem
- Solution
- Discussion
- See Also
- Enabling Absolute Timeouts on VTY Lines
- Problem
- Solution
- Discussion
- See Also
- Implementing Banners
- Problem
- Solution
- Discussion
- See Also
- Disabling Banners on a Port
- Problem
- Solution
- Discussion
- See Also
- Disabling Router Lines
- Problem
- Solution
- Discussion
- See Also
- Reserving a VTY Port for Administrative Access
- Problem
- Solution
- Discussion
- See Also
- Restricting Inbound Telnet Access
- Problem
- Solution
- Discussion
- See Also
- Logging Telnet Access
- Problem
- Solution
- Discussion
- See Also
- Setting the Source Address for Telnet
- Problem
- Solution
- Discussion
- Automating the Login Sequence
- Problem
- Solution
- Discussion
- See Also
- Using SSH for Secure Access
- Problem
- Solution
- Discussion
- See Also
- Changing Privilege Level of IOS Commands
- Problem
- Solution
- Discussion
- See Also
- Defining Per User Privileges
- Problem
- Solution
- Discussion
- See Also
- Defining Per Port Privileges
- Problem
- Solution
- Discussion
- See Also
- 4. TACACS+
- Introduction
- Authenticating Login IDs from a Central System
- Problem
- Solution
- Discussion
- See Also
- Restricting Command Access
- Problem
- Solution
- Discussion
- See Also
- Losing Access to the TACACS+ Server
- Problem
- Solution
- Discussion
- See Also
- Disabling TACACS+ Authentication on a Particular Line
- Problem
- Solution
- Discussion
- See Also
- Capturing User Keystrokes
- Problem
- Solution
- Discussion
- See Also
- Logging System Events
- Problem
- Solution
- Discussion
- See Also
- Setting the IP Source Address for TACACS+ Messages
- Problem
- Solution
- Discussion
- See Also
- Sample Server Configuration Files
- Problem
- Solution
- Discussion
- See Also
- 5. IP Routing
- Introduction
- Unregistered Addresses
- Finding an IP Route
- Problem
- Solution
- Discussion
- Finding Types of IP Routes
- Problem
- Solution
- Discussion
- Converting Different Mask Formats
- Problem
- Solution
- Discussion
- Using Static Routing
- Problem
- Solution
- Discussion
- See Also
- Floating Static Routes
- Problem
- Solution
- Discussion
- See Also
- Using Policy-Based Routing to Route Based on Source Address
- Problem
- Solution
- Discussion
- See Also
- Using Policy-Based Routing to Route Based on Application Type
- Problem
- Solution
- Discussion
- See Also
- Examining Policy-Based Routing
- Problem
- Solution
- Discussion
- See Also
- Changing Administrative Distances
- Problem
- Solution
- Discussion
- See Also
- Routing Over Multiple Paths with Equal Costs
- Problem
- Solution
- Discussion
- See Also
- Static Routes That Track Interfaces or Other Routes
- Problem
- Solution
- Discussion
- See Also
- Keeping Statistics on Routing Table Changes
- Problem
- Solution
- Discussion
- Introduction
- 6. RIP
- Introduction
- Configuring RIP Version 1
- Problem
- Solution
- Discussion
- See Also
- Filtering Routes with RIP
- Problem
- Solution
- Discussion
- See Also
- Redistributing Static Routes into RIP
- Problem
- Solution
- Discussion
- See Also
- Redistributing Routes Using Route Maps
- Problem
- Solution
- Discussion
- See Also
- Creating a Default Route in RIP
- Problem
- Solution
- Discussion
- See Also
- Disabling RIP on an Interface
- Problem
- Solution
- Discussion
- See Also
- Default Passive Interface
- Problem
- Solution
- Discussion
- See Also
- Unicast Updates for RIP
- Problem
- Solution
- Discussion
- See Also
- Applying Offsets to Routes
- Problem
- Solution
- Discussion
- Adjusting Timers
- Problem
- Solution
- Discussion
- See Also
- Configuring Interpacket Delay
- Problem
- Solution
- Discussion
- See Also
- Enabling Nonperiodic Updates
- Problem
- Solution
- Discussion
- See Also
- Increasing the RIP Input Queue
- Problem
- Solution
- Discussion
- See Also
- Configuring RIP Version 2
- Problem
- Solution
- Discussion
- Enabling RIP Authentication
- Problem
- Solution
- Discussion
- See Also
- RIP Route Summarization
- Problem
- Solution
- Discussion
- Route Tagging
- Problem
- Solution
- Discussion
- See Also
- 7. EIGRP
- Introduction
- Configuring EIGRP
- Problem
- Solution
- Discussion
- See Also
- Filtering Routes with EIGRP
- Problem
- Solution
- Discussion
- See Also
- Redistributing Routes into EIGRP
- Problem
- Solution
- Discussion
- See Also
- Redistributing Routes into EIGRP Using Route Maps
- Problem
- Solution
- Discussion
- See Also
- Disabling EIGRP on an Interface
- Problem
- Solution
- Discussion
- See Also
- Adjusting EIGRP Metrics
- Problem
- Solution
- Discussion
- Adjusting Timers
- Problem
- Solution
- Discussion
- See Also
- Enabling EIGRP Authentication
- Problem
- Solution
- Discussion
- See Also
- EIGRP Route Summarization
- Problem
- Solution
- Discussion
- See Also
- Logging EIGRP Neighbor State Changes
- Problem
- Solution
- Discussion
- See Also
- Limiting EIGRPs Bandwidth Utilization
- Problem
- Solution
- Discussion
- See Also
- EIGRP Stub Routing
- Problem
- Solution
- Discussion
- See Also
- Route Tagging
- Problem
- Solution
- Discussion
- See Also
- Viewing EIGRP Status
- Problem
- Solution
- Discussion
- 8. OSPF
- Introduction
- Configuring OSPF
- Problem
- Solution
- Discussion
- Filtering Routes in OSPF
- Problem
- Solution
- Discussion
- See Also
- Adjusting OSPF Costs
- Problem
- Solution
- Discussion
- Creating a Default Route in OSPF
- Problem
- Solution
- Discussion
- See Also
- Redistributing Static Routes into OSPF
- Problem
- Solution
- Discussion
- Redistributing External Routes into OSPF
- Problem
- Solution
- Discussion
- See Also
- Manipulating DR Selection
- Problem
- Solution
- Discussion
- See Also
- Setting the OSPF RID
- Problem
- Solution
- Discussion
- See Also
- Enabling OSPF Authentication
- Problem
- Solution
- Discussion
- See Also
- Selecting the Appropriate Area Types
- Problem
- Solution
- Discussion
- See Also
- Using OSPF on Dial Interfaces
- Problem
- Solution
- Discussion
- See Also
- Summarizing Routes in OSPF
- Problem
- Solution
- Discussion
- See Also
- Disabling OSPF on Certain Interfaces
- Problem
- Solution
- Discussion
- Changing the Network Type on an Interface
- Problem
- Solution
- Discussion
- See Also
- OSPF Route Tagging
- Problem
- Solution
- Discussion
- See Also
- Logging OSPF Adjacency Changes
- Problem
- Solution
- Discussion
- See Also
- Adjusting OSPF Timers
- Problem
- Solution
- Discussion
- See Also
- Reducing OSPF Traffic in Stable Networks
- Problem
- Solution
- Discussion
- OSPF Virtual Links
- Problem
- Solution
- Discussion
- Viewing OSPF Status with Domain Names
- Problem
- Solution
- Discussion
- See Also
- Debugging OSPF
- Problem
- Solution
- Discussion
- 9. BGP
- Introduction
- Basic Terminology
- BGP Attributes
- Route Selection
- Configuring BGP
- Problem
- Solution
- Discussion
- See Also
- Using eBGP Multihop
- Problem
- Solution
- Discussion
- See Also
- Adjusting the Next-Hop Attribute
- Problem
- Solution
- Discussion
- Connecting to Two ISPs
- Problem
- Solution
- Discussion
- See Also
- Connecting to Two ISPs with Redundant Routers
- Problem
- Solution
- Discussion
- See Also
- Restricting Networks Advertised to a BGP Peer
- Problem
- Solution
- Discussion
- See Also
- Adjusting Local Preference Values
- Problem
- Solution
- Discussion
- See Also
- Load-Balancing
- Problem
- Solution
- Discussion
- Removing Private ASNs from the AS Path
- Problem
- Solution
- Discussion
- Filtering BGP Routes Based on AS Paths
- Problem
- Solution
- Discussion
- See Also
- Reducing the Size of the Received Routing Table
- Problem
- Solution
- Discussion
- See Also
- Summarizing Outbound Routing Information
- Problem
- Solution
- Discussion
- See Also
- Prepending ASNs to the AS Path
- Problem
- Solution
- Discussion
- See Also
- Redistributing Routes with BGP
- Problem
- Solution
- Discussion
- See Also
- Using Peer Groups
- Problem
- Solution
- Discussion
- Authenticating BGP Peers
- Problem
- Solution
- Discussion
- See Also
- Using BGP Communities
- Problem
- Solution
- Discussion
- See Also
- Using BGP Route Reflectors
- Problem
- Solution
- Discussion
- See Also
- Putting It All Together
- Problem
- Solution
- Discussion
- See Also
- Introduction
- 10. Frame Relay
- Introduction
- Frame Relay QoS Features
- Setting Up Frame Relay with Point-to-Point Subinterfaces
- Problem
- Solution
- Discussion
- See Also
- Adjusting LMI Options
- Problem
- Solution
- Discussion
- Setting Up Frame Relay with Map Statements
- Problem
- Solution
- Discussion
- See Also
- Using Multipoint Subinterfaces
- Problem
- Solution
- Discussion
- See Also
- Configuring Frame Relay SVCs
- Problem
- Solution
- Discussion
- See Also
- Simulating a Frame Relay Cloud
- Problem
- Solution
- Discussion
- See Also
- Compressing Frame Relay Data on a Subinterface
- Problem
- Solution
- Discussion
- See Also
- Compressing Frame Relay Data with Maps
- Problem
- Solution
- Discussion
- See Also
- PPP over Frame Relay
- Problem
- Solution
- Discussion
- See Also
- Viewing Frame Relay Status Information
- Problem
- Solution
- Discussion
- Introduction
- 11. Handling Queuing and Congestion
- Introduction
- Queuing Algorithms
- Fast Switching and CEF
- Fast Switching and CEF
- Problem
- Solution
- Discussion
- See Also
- Setting the DSCP or TOS Field
- Problem
- Solution
- Discussion
- See Also
- Using Priority Queuing
- Problem
- Solution
- Discussion
- See Also
- Using Custom Queuing
- Problem
- Solution
- Discussion
- Using Custom Queues with Priority Queues
- Problem
- Solution
- Discussion
- See Also
- Using Weighted Fair Queuing
- Problem
- Solution
- Discussion
- See Also
- Using Class-Based Weighted Fair Queuing
- Problem
- Solution
- Discussion
- See Also
- Using NBAR Classification
- Problem
- Solution
- Discussion
- Controlling Congestion with WRED
- Problem
- Solution
- Discussion
- See Also
- Using RSVP
- Problem
- Solution
- Discussion
- See Also
- Manual RSVP Reservations
- Problem
- Solution
- Discussion
- RESV and PATH messages
- Two service types
- The examples
- See Also
- Aggregating RSVP Reservations
- Problem
- Solution
- Discussion
- See Also
- Using Generic Traffic Shaping
- Problem
- Solution
- Discussion
- See Also
- Using Frame-Relay Traffic Shaping
- Problem
- Solution
- Discussion
- See Also
- Using Committed Access Rate
- Problem
- Solution
- Discussion
- See Also
- Implementing Standards-Based Per-Hop Behavior
- Problem
- Solution
- Discussion
- See Also
- AutoQoS
- Problem
- Solution
- Discussion
- See Also
- Viewing Queue Parameters
- Problem
- Solution
- Discussion
- Introduction
- 12. Tunnels and VPNs
- Introduction
- Creating a Tunnel
- Problem
- Solution
- Discussion
- See Also
- Tunneling Foreign Protocols in IP
- Problem
- Solution
- Discussion
- See Also
- Tunneling with Dynamic Routing Protocols
- Problem
- Solution
- Discussion
- See Also
- Viewing Tunnel Status
- Problem
- Solution
- Discussion
- See Also
- Creating an Encrypted Router-to-Router VPN in a GRE Tunnel
- Problem
- Solution
- Discussion
- See Also
- Creating an Encrypted VPN Between the LAN Interfaces of Two Routers
- Problem
- Solution
- Discussion
- See Also
- Generating RSA Keys
- Problem
- Solution
- Discussion
- See Also
- Creating a Router-to-Router VPN with RSA Keys
- Problem
- Solution
- Discussion
- See Also
- Creating a VPN Between a Workstation and a Router
- Problem
- Solution
- Discussion
- See Also
- Creating an SSL VPN
- Problem
- Solution
- Discussion
- See Also
- Checking IPSec Protocol Status
- Problem
- Solution
- Discussion
- 13. Dial Backup
- Introduction
- Analog Modems
- Switched 56 Kbps Digital Service
- ISDN
- Estimating How Many Dialup Lines You Need
- Automating Dial Backup
- Problem
- Solution
- Discussion
- See Also
- Using Dialer Interfaces
- Problem
- Solution
- Discussion
- See Also
- Using an Async Modem on the AUX Port
- Problem
- Solution
- Discussion
- See Also
- Using Backup Interfaces
- Problem
- Solution
- Discussion
- See Also
- Using Dialer Watch
- Problem
- Solution
- Discussion
- See Also
- Using Virtual Templates
- Problem
- Solution
- Discussion
- See Also
- Ensuring Proper Disconnection
- Problem
- Solution
- Discussion
- View Dial Backup Status
- Problem
- Solution
- Discussion
- See Also
- Debugging Dial Backup
- Problem
- Solution
- Discussion
- Introduction
- 14. NTP and Time
- Introduction
- Time-Stamping Router Logs
- Problem
- Solution
- Discussion
- See Also
- Setting the Time
- Problem
- Solution
- Discussion
- See Also
- Setting the Time Zone
- Problem
- Solution
- Discussion
- See Also
- Adjusting for Daylight Saving Time
- Problem
- Solution
- Discussion
- See Also
- Synchronizing the Time on All Routers (NTP)
- Problem
- Solution
- Discussion
- See Also
- Configuring NTP Redundancy
- Problem
- Solution
- Discussion
- See Also
- Setting the Router As the NTP Master for the Network
- Problem
- Solution
- Discussion
- See Also
- Changing NTP Synchronization Periods
- Problem
- Solution
- Discussion
- See Also
- Using NTP to Send Periodic Broadcast Time Updates
- Problem
- Solution
- Discussion
- See Also
- Using NTP to Send Periodic Multicast Time Updates
- Problem
- Solution
- Discussion
- See Also
- Enabling and Disabling NTP Per Interface
- Problem
- Solution
- Discussion
- See Also
- NTP Authentication
- Problem
- Solution
- Discussion
- Limiting the Number of Peers
- Problem
- Solution
- Discussion
- See Also
- Restricting Peers
- Problem
- Solution
- Discussion
- See Also
- Setting the Clock Period
- Problem
- Solution
- Discussion
- Checking the NTP Status
- Problem
- Solution
- Discussion
- Debugging NTP
- Problem
- Solution
- Discussion
- NTP Logging
- Problem
- Solution
- Discussion
- See Also
- Extended Daylight Saving Time
- Problem
- Solution
- Discussion
- See Also
- NTP Server Configuration
- Problem
- Solution
- Discussion
- See Also
- 15. DLSw
- Introduction
- Service Access Points (SAP and LSAP)
- Explorers and RIFs
- Cisco IOS Code Sets
- Simple Bridging
- Problem
- Solution
- Discussion
- Configuring DLSw
- Problem
- Solution
- Discussion
- The peers
- Ring groups, ring numbers, and bridge numbers
- Explorer options
- Other features
- Using DLSw to Bridge Between Ethernet and Token Ring
- Problem
- Solution
- Discussion
- Ethernet II or 802.3 framing
- See Also
- Converting Ethernet and Token Ring MAC Addresses
- Problem
- Solution
- Discussion
- See Also
- Configuring SDLC
- Problem
- Solution
- Discussion
- See Also
- Configuring SDLC for Multidrop Connections
- Problem
- Solution
- Discussion
- See Also
- Using STUN
- Problem
- Solution
- Discussion
- See Also
- Using BSTUN
- Problem
- Solution
- Discussion
- Controlling DLSw Packet Fragmentation
- Problem
- Solution
- Discussion
- Tagging DLSw Packets for QoS
- Problem
- Solution
- Discussion
- See Also
- Supporting SNA Priorities
- Problem
- Solution
- Discussion
- See Also
- DLSw+ Redundancy and Fault Tolerance
- Problem
- Solution
- Discussion
- See Also
- Viewing DLSw Status Information
- Problem
- Solution
- Discussion
- Viewing SDLC Status Information
- Problem
- Solution
- Discussion
- See Also
- Debugging DSLw
- Problem
- Solution
- Discussion
- See Also
- Introduction
- 16. Router Interfaces and Media
- Introduction
- Viewing Interface Status
- Problem
- Solution
- Discussion
- See Also
- Configuring Serial Interfaces
- Problem
- Solution
- Discussion
- See Also
- Using an Internal T1 CSU/DSU
- Problem
- Solution
- Discussion
- See Also
- Using an Internal ISDN PRI Module
- Problem
- Solution
- Discussion
- See Also
- Using an Internal 56 Kbps CSU/DSU
- Problem
- Solution
- Discussion
- See Also
- Configuring an Async Serial Interface
- Problem
- Solution
- Discussion
- See Also
- Configuring ATM Subinterfaces
- Problem
- Solution
- Discussion
- See Also
- Setting Payload Scrambling on an ATM Circuit
- Problem
- Solution
- Discussion
- See Also
- Classical IP Over ATM
- Problem
- Solution
- Discussion
- See Also
- Configuring Ethernet Interface Features
- Problem
- Solution
- Discussion
- Configuring Token Ring Interface Features
- Problem
- Solution
- Discussion
- See Also
- Connecting VLAN Trunks with ISL
- Problem
- Solution
- Discussion
- See Also
- Connecting VLAN Trunks with 802.1Q
- Problem
- Solution
- Discussion
- See Also
- LPD Printer Support
- Problem
- Solution
- Discussion
- See Also
- 17. Simple Network Management Protocol
- Introduction
- SNMP Management Model
- MIBs and OIDs
- Configuring SNMP
- Problem
- Solution
- Discussion
- See Also
- Extracting Router Information via SNMP Tools
- Problem
- Solution
- Discussion
- See Also
- Recording Important Router Information for SNMP Access
- Problem
- Solution
- Discussion
- Using SNMP to Extract Inventory Information from a List of Routers
- Problem
- Solution
- Discussion
- See Also
- Using Access Lists to Protect SNMP Access
- Problem
- Solution
- Discussion
- See Also
- Logging Unauthorized SNMP Attempts
- Problem
- Solution
- Discussion
- See Also
- Limiting MIB Access
- Problem
- Solution
- Discussion
- See Also
- Using SNMP to Modify a Routers Running Configuration
- Problem
- Solution
- Discussion
- See Also
- Using SNMP to Copy a New IOS Image
- Problem
- Solution
- Discussion
- See Also
- Using SNMP to Perform Mass Configuration Changes
- Problem
- Solution
- Discussion
- See Also
- Preventing Unauthorized Configuration Modifications
- Problem
- Solution
- Discussion
- See Also
- Making Interface Table Numbers Permanent
- Problem
- Solution
- Discussion
- See Also
- Enabling SNMP Traps and Informs
- Problem
- Solution
- Discussion
- See Also
- Sending Syslog Messages As SNMP Traps and Informs
- Problem
- Solution
- Discussion
- See Also
- Setting SNMP Packet Size
- Problem
- Solution
- Discussion
- Setting SNMP Queue Size
- Problem
- Solution
- Discussion
- Setting SNMP Timeout Values
- Problem
- Solution
- Discussion
- Disabling Link Up/Down Traps per Interface
- Problem
- Solution
- Discussion
- See Also
- Setting the IP Source Address for SNMP Traps
- Problem
- Solution
- Discussion
- Using RMON to Send Traps
- Problem
- Solution
- Discussion
- See Also
- Enabling SNMPv3
- Problem
- Solution
- Discussion
- Using the SNMPv3 security levels
- See Also
- Strong SNMPv3 Encryption
- Problem
- Solution
- Discussion
- See Also
- Using SAA
- Problem
- Solution
- Discussion
- Introduction
- 18. Logging
- Introduction
- Enabling Local Router Logging
- Problem
- Solution
- Discussion
- See Also
- Setting the Log Size
- Problem
- Solution
- Discussion
- See Also
- Clearing the Routers Log
- Problem
- Solution
- Discussion
- Sending Log Messages to Your Screen
- Problem
- Solution
- Discussion
- Using a Remote Log Server
- Problem
- Solution
- Discussion
- See Also
- Enabling Syslog on a Unix Server
- Problem
- Solution
- Discussion
- See Also
- Changing the Default Log Facility
- Problem
- Solution
- Discussion
- See Also
- Restricting What Log Messages Are Sent to the Server
- Problem
- Solution
- Discussion
- Setting the IP Source Address for Syslog Messages
- Problem
- Solution
- Discussion
- See Also
- Logging Router Syslog Messages in Different Files
- Problem
- Solution
- Discussion
- See Also
- Maintaining Syslog Files on the Server
- Problem
- Solution
- Discussion
- Testing the Syslog Sever Configuration
- Problem
- Solution
- Discussion
- Preventing the Most Common Messages from Being Logged
- Problem
- Solution
- Discussion
- Rate-Limiting Syslog Traffic
- Problem
- Solution
- Discussion
- Enabling Error Log Counting
- Problem
- Solution
- Discussion
- XML-Formatted Log Messages
- Problem
- Solution
- Discussion
- See Also
- Modifying Log Messages
- Problem
- Solution
- Discussion
- See Also
- 19. Access-Lists
- Introduction
- Filtering by Source or Destination IP Address
- Problem
- Solution
- Discussion
- See Also
- Adding a Comment to an ACL
- Problem
- Solution
- Discussion
- See Also
- Filtering by Application
- Problem
- Solution
- Discussion
- See Also
- Filtering Based on TCP Header Flags
- Problem
- Solution
- Discussion
- See Also
- Restricting TCP Session Direction
- Problem
- Solution
- Discussion
- Filtering Multiport Applications
- Problem
- Solution
- Discussion
- See Also
- Filtering Based on DSCP and TOS
- Problem
- Solution
- Discussion
- See Also
- Logging When an Access-List Is Used
- Problem
- Solution
- Discussion
- See Also
- Logging TCP Sessions
- Problem
- Solution
- Discussion
- See Also
- Analyzing ACL Log Entries
- Problem
- Solution
- Discussion
- See Also
- Using Named and Reflexive Access-Lists
- Problem
- Solution
- Discussion
- See Also
- Dealing with Passive Mode FTP
- Problem
- Solution
- Discussion
- See Also
- Using Time-Based Access-Lists
- Problem
- Solution
- Discussion
- See Also
- Filtering Based on Noncontiguous Ports
- Problem
- Solution
- Discussion
- See Also
- Advanced Access-List Editing
- Problem
- Solution
- Discussion
- See Also
- Filtering IPv6
- Problem
- Solution
- Discussion
- See Also
- 20. DHCP
- Introduction
- Using IP Helper Addresses for DHCP
- Problem
- Solution
- Discussion
- See Also
- Limiting the Impact of IP Helper Addresses
- Problem
- Solution
- Discussion
- See Also
- Using DHCP to Dynamically Configure Router IP Addresses
- Problem
- Solution
- Discussion
- Dynamically Allocating Client IP Addresses via DHCP
- Problem
- Solution
- Discussion
- See Also
- Defining DHCP Configuration Options
- Problem
- Solution
- Discussion
- See Also
- Defining DHCP Lease Periods
- Problem
- Solution
- Discussion
- See Also
- Allocating Static IP Addresses with DHCP
- Problem
- Solution
- Discussion
- See Also
- Configuring a DHCP Database Client
- Problem
- Solution
- Discussion
- See Also
- Configuring Multiple DHCP Servers per Subnet
- Problem
- Solution
- Discussion
- See Also
- DHCP Static Mapping
- Problem
- Solution
- Discussion
- See Also
- DHCP-Secured IP Address Assignment
- Problem
- Solution
- Discussion
- Showing DHCP Status
- Problem
- Solution
- Discussion
- See Also
- Debugging DHCP
- Problem
- Solution
- Discussion
- 21. NAT
- Introduction
- Configuring Basic NAT Functionality
- Problem
- Solution
- Discussion
- Allocating External Addresses Dynamically
- Problem
- Solution
- Discussion
- See Also
- Allocating External Addresses Statically
- Problem
- Solution
- Discussion
- See Also
- Translating Some Addresses Statically and Others Dynamically
- Problem
- Solution
- Discussion
- See Also
- Using Route Maps to Refine Static Translation Rules
- Problem
- Solution
- Discussion
- See Also
- Translating in Both Directions Simultaneously
- Problem
- Solution
- Discussion
- See Also
- Rewriting the Network Prefix
- Problem
- Solution
- Discussion
- Using NAT for Server Load Distribution
- Problem
- Solution
- Discussion
- Stateful NAT Failover
- Problem
- Solution
- Discussion
- See Also
- Adjusting NAT Timers
- Problem
- Solution
- Discussion
- See Also
- Changing TCP Ports for FTP
- Problem
- Solution
- Discussion
- Checking NAT Status
- Problem
- Solution
- Discussion
- Debugging NAT
- Problem
- Solution
- Discussion
- 22. First Hop Redundancy Protocols
- Introduction
- Configuring Basic HSRP Functionality
- Problem
- Solution
- Discussion
- See Also
- Using HSRP Preempt
- Problem
- Solution
- Discussion
- See Also
- Making HSRP React to Problems on Other Interfaces
- Problem
- Solution
- Discussion
- See Also
- Load-Balancing with HSRP
- Problem
- Solution
- Discussion
- See Also
- Redirecting ICMP with HSRP
- Problem
- Solution
- Discussion
- Manipulating HSRP Timers
- Problem
- Solution
- Discussion
- Using HSRP on Token Ring
- Problem
- Solution
- Discussion
- See Also
- HSRP SNMP Support
- Problem
- Solution
- Discussion
- See Also
- Increasing HSRP Security
- Problem
- Solution
- Discussion
- See Also
- Showing HSRP State Information
- Problem
- Solution
- Discussion
- Debugging HSRP
- Problem
- Solution
- Discussion
- HSRP Version 2
- Problem
- Solution
- Discussion
- See Also
- VRRP
- Problem
- Solution
- Discussion
- See Also
- Gateway Load-Balancing Protocol
- Problem
- Solution
- Discussion
- See Also
- 23. IP Multicast
- Introduction
- IGMP and CGMP
- Multicast Routing Protocols
- PIM-DM, PIM-SM, and Bidirectional PIM
- DVMRP
- MOSPF
- MBGP
- Configuring Basic Multicast Functionality with PIM-DM
- Problem
- Solution
- Discussion
- Routing Multicast Traffic with PIM-SM and BSR
- Problem
- Solution
- Discussion
- Routing Multicast Traffic with PIM-SM and Auto-RP
- Problem
- Solution
- Discussion
- See Also
- Filtering PIM Neighbors
- Problem
- Solution
- Discussion
- Configuring Routing for a Low-Frequency Multicast Application
- Problem
- Solution
- Discussion
- See Also
- Multicast over Frame Relay or ATM WANs
- Problem
- Solution
- Discussion
- See Also
- Configuring CGMP
- Problem
- Solution
- Discussion
- Using IGMP Version 3
- Problem
- Solution
- Discussion
- See Also
- Static Multicast Routes and Group Memberships
- Problem
- Solution
- Discussion
- Routing Multicast Traffic with MOSPF
- Problem
- Solution
- Discussion
- Routing Multicast Traffic with DVMRP
- Problem
- Solution
- Discussion
- See Also
- DVMRP Tunnels
- Problem
- Solution
- Discussion
- See Also
- Configuring Bidirectional PIM
- Problem
- Solution
- Discussion
- See Also
- Controlling Multicast Scope with TTL
- Problem
- Solution
- Discussion
- See Also
- Controlling Multicast Scope with Administratively Scoped Addressing
- Problem
- Solution
- Discussion
- Exchanging Multicast Routing Information with MBGP
- Problem
- Solution
- Discussion
- See Also
- Using MSDP to Discover External Sources
- Problem
- Solution
- Discussion
- See Also
- Configuring Anycast RP
- Problem
- Solution
- Discussion
- See Also
- Converting Broadcasts to Multicasts
- Problem
- Solution
- Discussion
- See also
- Showing Multicast Status
- Problem
- Solution
- Discussion
- Debugging Multicast Routing
- Problem
- Solution
- Discussion
- Introduction
- 24. IP Mobility
- Introduction
- Terminology
- Local Area Mobility
- Local Area Mobility
- Problem
- Solution
- Discussion
- See Also
- Home Agent Configuration
- Problem
- Solution
- Discussion
- See Also
- Foreign Agent Configuration
- Problem
- Solution
- Discussion
- Authenticating the Foreign Agent
- See Also
- Making a Router a Mobile Node
- Problem
- Solution
- Discussion
- Authenticating with the Foreign Agent
- See Also
- Reverse-Tunnel Forwarding
- Problem
- Solution
- Discussion
- See Also
- Using HSRP for Home Agent Redundancy
- Problem
- Solution
- Discussion
- See Also
- Introduction
- 25. IPv6
- Introduction
- IPv6 Addressing
- Addressing Standards
- IEEE EUI-64 Identifiers
- Routing Protocols
- Automatically Generating IPv6 Addresses for an Interface
- Problem
- Solution
- Discussion
- See Also
- Manually Configuring IPv6 Addresses on an Interface
- Problems
- Solution
- Discussion
- See Also
- Configuring DHCP for IPv6
- Problem
- Solution
- Discussion
- See Also
- Dynamic Routing with RIP
- Problem
- Solution
- Discussion
- See Also
- Modifying the Default RIP Parameters
- Problem
- Solution
- Discussion
- See Also
- IPv6 Route Filtering and Metric Manipulation in RIP
- Problem
- Solution
- Discussion
- See Also
- Using OSPF for IPv6
- Problem
- Solution
- Discussion
- See Also
- IPv6 Route Filtering and Metric Manipulation in OSPF
- Problem
- Solution
- Discussion
- See Also
- Route Redistribution
- Problem
- Solution
- Discussion
- See Also
- Dynamic Routing with MBGP
- Problem
- Solution
- Discussion
- See Also
- Tunneling IPv6 Through an Existing IPv4 Network
- Problem
- Solution
- Discussion
- See Also
- Translating Between IPv6 and IPv4
- Problem
- Solution
- Discussion
- See Also
- Introduction
- 26. MPLS
- Introduction
- Some Terminology
- Benefits of MPLS
- IOS Versions and Feature Sets
- Structure of This Chapter
- Configuring a Basic MPLS P Router
- Problem
- Solution
- Discussion
- See Also
- Configuring a Basic MPLS PE Router
- Problem
- Solution
- Discussion
- See Also
- Configuring Basic MPLS CE Routers
- Problem
- Solution
- Discussion
- See Also
- Configuring MPLS over ATM
- Problem
- Solution
- Discussion
- PE-CE Communication via RIP
- Problem
- Solution
- Discussion
- See Also
- PE-CE Communication via OSPF
- Problem
- Solution
- Discussion
- See Also
- PE-CE Communication via EIGRP
- Problem
- Solution
- Discussion
- See Also
- PE-CE Communication via BGP
- Problem
- Solution
- Discussion
- See Also
- QoS over MPLS
- Problem
- Solution
- Discussion
- See Also
- MPLS Traffic Engineering with Autoroute
- Problem
- Solution
- Discussion
- See Also
- Multicast Over MPLS
- Problem
- Solution
- Discussion
- See Also
- Your Service Provider Doesnt Do What You Want
- Problem
- Solution
- Discussion
- See Also
- Introduction
- 27. Security
- Introduction
- CBAC
- PAM
- Authentication Proxy
- TCP Intercept
- Intrusion Prevention
- AutoSecure
- Using AutoSecure
- Problem
- Solution
- Discussion
- Using Context-Based Access-Lists
- Problem
- Solution
- Discussion
- See Also
- Transparent Cisco IOS Firewall
- Problem
- Solution
- Discussion
- See Also
- Stopping Denial of Service Attacks
- Problem
- Solution
- Discussion
- Inspecting Applications on Different Port Numbers
- Problem
- Solution
- Discussion
- See Also
- Intrusion Detection and Prevention
- Problem
- Solution
- Discussion
- Intrusion detection
- Intrusion prevention
- See Also
- Login Password Retry Lockout
- Problem
- Solution
- Discussion
- See Also
- Authentication Proxy
- Problem
- Solution
- Discussion
- See Also
- Introduction
- 1. External Software Packages
- Perl
- Expect
- NET-SNMP
- PuTTY
- OpenSSH
- Ethereal
- 2. IP Precedence, TOS, and DSCP Classifications
- IP Precedence, TOS, and DSCP Classifications
- Combining TOS and IP Precedence to Mimic DSCP
- RSVP
- Queueing Algorithms
- Weighted Fair Queueing
- Priority Queueing
- Custom Queueing
- Dropping Packets and Congestion Avoidance
- IP Precedence, TOS, and DSCP Classifications
- About the Authors
- Colophon
- SPECIAL OFFER: Upgrade this ebook with OReilly