Indicates a favorites hits link.

Assorted

• 2Wire - DSL Lookup Service 
• CCIE pursuit blog
• CIAC - Computer Incident Advisory Capability
• Cisco Hints and Tricks
• CiscoHQ
• Hoaxbusters
• ICANN - The Internet Corporation for Assigned Names and Numbers
• IETF - The Internet Engineering Task Force (RFCs)
• Internet Assigned Number Authority (IANA)
• MRTG - The Multi Router Traffic Grapher
• Network Management tools from SolarWinds
• Network Uptime - Network analysis, Sniffer tutorial, softwares 
• NIL IP Corner
• NIST (National Institute of Standards and Technology)
• Packet Storm (packet sniffers)
• Prometric Test Online Registration
• Protocols.com - Protocol directory, acronyms & frame decodes 
• SearchNetworking
• TCPmag.com
• Uri's TCP/IP Resources List
• W3C - World Wide Web Consortium

Cisco Magazines, Publications & News

• Cisco Broadband Networking (news for cable operators)
• Cisco In The News
• Cisco iQ Magazine
• Networking Professionals Connection Forum (NetPro)
• The Internet Protocol Journal

Cisco Networkers

• Networkers 2000 Presentations
• Networkers 2001 Presentations
• Networkers 2002 Presentations
• Networkers 2003 Presentations
• Networkers 2004 Presentations

Cisco CCO - Technical Links

• Access Dial Cookbook
• Address Allocation for Private Internets
• Adjusting Interface Characteristics
• Async DDR - Testing into the San Jose Dial-in Lab
• ATM Internetworks - Designing
• BGP - Tech Tips
• Bug Toolkit
• Cable Guide (Serial)
• Cable Specifications
• Cables (RS232) DCE Pinouts
• Cables RJ-45
• Case Studies
• CIPTUG - Cisco IP Telecommunications User Group
• ConfigMaker
• Configuring Packet-Switched Software
• Configuring Router Interfaces
• Core Products - 7000, 12000 GSR
• Dial Solutions - Quick Configuration Guide
• EIGRP Configuration Notes
• Ethernet Type Codes
• Ethernet Codes and IDs
• First-Time Startup and Basic Configuration
• Frame Relay - Configuring and Troubleshooting
• IGRP
• Internetworking Terms and Acronyms--Book (3MB)
• IOS - Feature Navigator
• IP Routing Protocols
• IP Routing Protocols - Configuring
• IP Subnet Calculator
• LAN - Technical Tips
• Loading System Images, Microcode Images, and Configuration Files
• Long Reach Ethernet (LRE)
• Memory - Maintaining Router Memory
• MIBs Index
• Modem - Router - Connection Guide
• Monitor and Troubleshoot General System Processes
• Multi-layer LAN Switches
• OSPF - Design Guide
• Output Interpreter
• Password Recovery Procedures
• Password Recovery - Key Combinations for Break Sequence
• Pricing Tool Search for Product by Description or Number
• Product Documentation
• Products & Services
• References and RFCs
• RADIUS - Decoding a Sniffer-trace of RADIUS Transaction
• Router Management - Technical Tips, Crashes, Buffers, Memory
• Routing AppleTalk
• Routing IP
• Routing Novell IPX
• Routing Protocols - BGP, CDP, CNLS, HSRP, IGRP/EIGRP, IP, NAT, OSPF
• Route Selection in Cisco Routers
• Security Advisories (PSIRT)
• Security - SAFE Blueprint / white papers 
• SNMP
• Software Advisor
• Source Route Bridging
• System Error Messages
• TAC (Technical Assistance Center)
• TAC Software Center (download software)
• Technical Tips: Search, Cookbooks, Hardware, Sample Configurations, Products
• Terminal Server Configuration
• Testing Async DDR into the San Jose Dial-in Lab
• Transparent Bridging
• Troubleshooting Commands
• Troubleshooting Ethernet
• Troubleshooting High CPU Utilization on Cisco Routers
• Troubleshooting Serial Lines
• Using Terminals
• Visio Stencils & Icons

Cisco Training & Certifications

• CCIE Verification Tool
• Cisco Networking Academy Program
• Cisco Training and Certifications
• Networkers Home Page
• Retired Exams
• Total Number of Active CCIEs in the World
• Worldwide Events & Calendar

Undocumented IOS and Catalyst Commands - and a Few Hacks

• Cisco Password 7 Hash Cracker
• Heinz Ulm's - undocumented IOS commands
• Undocumented IOS and Catalyst commands

Internet Authorities and Groups

• Internet Architecture Board (IAB)
• Internet Assigned Numbers Authority (IANA)
• Internet Engineering Steering Group
• Internet Engineering Task Force (IETF)
• Internet FAQ Archives
• Internet Mail Consortium
• Internet Research Task Force (IRTF)
• Internet Systems Consortum
• International Telecommunication Union (ITU)
• RFC editor's web page

Regional Internet Address Registries

• APNIC (Asia-Pacific Network Information Center)
• ARIN (American Registry for Internet Numbers)
• RIPE NCC  (Regional Internet Registries)

United States Government links

• NTIA (National Telecommunications and Information Administration)