Some useful links for CCIE candidats and others

Voice Over IP Cookbook  
Cisco TAC-Newsletters   
Cisco LAN Technologies  
Cisco Access Dial Configuration Cookbook  
Configuring Cisco Discovery Protocol on Routers, RSMs, and Switches   
Configuring SNMP Community Strings on Routers, RSMs, and Switches   
Password Recovery Procedures  
Hot Cisco IP Routing Protocols Issues Worldwide    (available to registered users)
Hot Cisco IP Routing Protocols Issues Worldwide  (available to non-registered users)
TACACS+ and RADIUS Comparison  
Cisco IOS Roadmap  
Password Recovery Techniques  
CCIE World Map  
Index of Sylvan CCIE Exam numbers  
One-Stop-Shop for the Latest Configuration Procedures   (available to registered users)
One-Stop-Shop for the Latest Configuration Procedures   (available to non-registered users)
The TAC "Access-Dial Technologies Top Issues"  (available to registered users)
The TAC "Access-Dial Technologies Top Issues"   (available to non-registered users)
TAC "Content Delivery Devices Top Issues"   available to registered users
TAC "Content Delivery Devices Top Issues    (available to non-registered users)

Data Link Layer Protocols and Technologies

ATM
ATM Report    International newsletter devoted to ATM
ATM Tutorial    Very thorough tutorial of ATM, from RAD Networks
Designing ATM Internetworks    By Cisco Systems Inc. Comprehensive guide to ATM and ATM

Ethernet
Ethernet Basics    Provides basic information about Ethernet, including an overview of design rules and standards
Charles Spurgeon's Ethernet Web Site    Tons of information and resources on Ethernet
Configuring Spanning Tree PortFast, UplinkFast, and BackboneFast    Cisco's configuration guide to the various flavors of STP
Ethernet and Token Ring On-Line Troubleshooting Guide -    By Wandel & Goltermann
Gigabit Ethernet Links Page    IEEE's links to Gigabit Ethernet Information
10 Gigabit Ethernet Resource Site    contains market forecasts, technology discussions, a start-up report, venture capital database and links to a variety of other useful sites

Frame Relay
Basic Guide to Frame Relay Networking    The Frame Relay Forum's guide to understanding Frame Relay
Configuring and troubleshooting Frame Relay    Cisco's guide to configuring and troubleshooting frame relay using Cisco routers
FRAME RELAY TUTORIAL CENTER   Comprehensive collection of Frame Relay tutorials and resources

Token Ring/FDDI
FDDI - System Level Description    A detailed white paper on FDDI technology
Token Ring / IEEE 802.5    Cisco's technology guide for Token Ring
Token Ring FAQ   

VLAN
LAN Switching    Cisco's guide to Layer 2 switching and VLANs
The VLAN Report    a comprehensive guide to VLAN technologies and applications, from 3Com

Cabling

BICSI Library    Collection of information on cabling and cabling standards
CableTesting.Com    Information and resources for cable testing
Connectworld    A lot of resources on cabling including cabling diagrams and standards information
Data Communications Cabling FAQ    Frequently asked questions for the comp.dcom.cabling newsgroup
Pin-Outs.Com    A comprehensive collection of cables, pinouts, and connectors

Some learning resources and exam questions examples

CCIE now    Links to resources for Cisco certification exams
CCPrep    Provides resources including tips and sample tests for Cisco certification exams
Cisco CCIE Overview   
NETWORKING PROFESSIONALS CONNECTION   ASK THE EXPERT- CCIE PROGRAM
The New Routing and Switching Written Exam (350-001)    About the new R&S writen exam from Cisco
Ccstudy  
Networkstudyguides   
Groupstudy  
Ccbootcamp  
RouterIE.com  R&S Forum
SecurityIE.com  Security Forum
Boson   
Cramsession    A lot stuff about different IT certifications
Optsys    Routers,switches...
Build a Home Lab    Recommendations for your LAB
Recommanded books   
CCIE Exam Sample  from Cisco