Here are more great resources for this section of the CCIE RS written and lab exam!

• 1.3 Network troubleshooting
  • 1.3.a Use IOS troubleshooting tools
    • 1.3.a [i] debug, conditional debug
    • 1.3.a [ii] ping, traceroute with extended options
    • 1.3.a [iii] Embedded packet capture
    • 1.3.a [iv] Performance monitor
  • 1.3.b Apply troubleshooting methodologies
    • 1.3.b [i] Diagnose the root cause of networking issue [analyze symptoms, identify and describe root cause]
    • 1.3.b [ii] Design and implement valid solutions according to constraints
    • 1.3.b [iii] Verify and monitor resolution
  • 1.3.c Interpret packet capture
    • 1.3.c [i] Using Wireshark trace analyzer
    • 1.3.c [ii] Using IOS embedded packet capture

Important Information on Debug Commands

Extended Ping and Extended Traceroute

Cisco Device Packet Capture

Embedded Packet Capture

Troubleshooting Overview

Catalyst Switch Troubleshooting 

Books:

Troubleshooting IP Routing Protocols