Troubleshooting and Logging
This chapter includes a grab bag of techniques for troubleshooting and monitoring your router. The two tasks are closely related: it's impossible to figure out what's going wrong if you don't have good logs that show what the router was trying (or failing) to do. We'll start with ping and trace, two tools that are available on virtually any computer that can connect to a network.
Getting Started
- Getting Started
- IOS User Modes
- Command-Line Completion
- Get to Know the Question Mark
- Command-Line Editing Keys
- Pausing Output
- show Commands
IOS Images and Configuration Files
- IOS Images and Configuration Files
- IOS Image Filenames
- The New Cisco IOS Packaging Model
- Loading Image Files Through the Network
- Using the IOS Filesystem for Images
- The Routers Configuration
- Loading Configuration Files
Basic Router Configuration
- Basic Router Configuration
- Setting the Router Name
- Setting the System Prompt
- Configuration Comments
- The Enable Password
- Mapping Hostnames to IP Addresses
- Setting the Routers Time
- Enabling SNMP
- Cisco Discovery Protocol
- System Banners
Line Commands
- Line Commands
- The line Command
- The Console Port
- Virtual Terminals (VTYs)
- Asynchronous Ports (TTYs)
- The Auxiliary (AUX) Port
- show line
- Reverse Telnet
- Common Configuration Items
Interface Commands
- Interface Commands
- Naming and Numbering Interfaces
- Basic Interface Configuration Commands
- The Loopback Interface
- The Null Interface
- Ethernet, Fast Ethernet, and Gigabit Ethernet Interfaces
- Token Ring Interfaces
- ISDN Interfaces
- Serial Interfaces
- Asynchronous Interfaces
- Interface show Commands
Networking Technologies
Access Lists
IP Routing Topics
- IP Routing Topics
- Autonomous System (AS) Numbers
- Interior and Exterior Gateway Protocols
- Distance-Vector and Link-State Routing Protocols
- Static Routes
- Split Horizon
- Passive Interfaces
- Fast Switching and Process Switching
Interior Routing Protocols
Border Gateway Protocol
- Border Gateway Protocol
- Introduction to BGP
- A Simple BGP Configuration
- Route Filtering
- An Advanced BGP Configuration
- Neighbor Authentication
- Peer Groups
- Route Reflectors
- BGP Confederacies
- BGP TTL Security
Quality of Service
- Quality of Service
- Marking
- Older Queuing Methods
- Modern IOS QoS Tools
- Congestion Avoidance
- Traffic Policing
- Traffic Shaping
- AutoQoS
- QoS Device Manager
Dial-on-Demand Routing
- Dial-on-Demand Routing
- Configuring a Simple DDR Connection
- Sample Legacy DDR Configurations
- Dialer Interfaces (Dialer Profiles)
- Multilink PPP
- Snapshot DDR
Specialized Networking Topics
- Specialized Networking Topics
- Bridging
- Hot Standby Routing Protocol (HSRP)
- Network Address Translation (NAT)
- Tunnels
- Encrypted Tunnels
- Multicast Routing
- Multiprotocol Label Switching (MPLS)
Switches and VLANs
- Switches and VLANs
- Switch Terminology
- IOS on Switches
- Basic Switch Configuration
- Trunking
- Switch Monitor Port for IDS or Sniffers
- Troubleshooting Switches
Router Security
- Router Security
- Securing Enable Mode Access
- Routine Security Measures
- Restricting Access to Your Router
Troubleshooting and Logging
Quick Reference
Appendix A Network Basics
Index
EAN: 2147483647
Pages: 1031
