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Cisco TSHOOT 2.0: Troubleshooting Security Issues

Target Audience
Expected Duration
Lesson Objectives
Course Number

Layer 2 security implementation is often forgotten. However, you should take the basic security measures to guard against a host of attacks that can be launched at a switch and its ports. Equally important is how to recognize and solve issues that may occur. This course describes how to diagnose and troubleshoot port security, spoofing, and virtual LAN access control list (VACL) problems using the Cisco IOS command line interface. It will also explain how to diagnose and resolve AAA and 802.1x port-based authentication problems.

Target Audience
Professionals who work in complex network environments desiring the skills they need to maintain their networks and to diagnose and resolve network problems quickly and effectively. The TSHOOT learning path will provide information about troubleshooting and maintaining particular technologies, as well as procedural and organizational aspects of the troubleshooting and maintenance process. A large part of the training will consist of practicing these skills and reinforcing the concepts by putting them to use in a controlled environment. At the end of the learning path, you should have increased your skill level and developed a set of best practices that are based on your own experience that you can take back to your organization.


Expected Duration (hours)

Lesson Objectives

Cisco TSHOOT 2.0: Troubleshooting Security Issues

  • start the course
  • describe port security issues
  • troubleshoot a port security issue
  • troubleshoot a MAC address issue
  • troubleshoot a secure port issue
  • troubleshoot a secure port
  • troubleshoot a sticky MAC address issue
  • identify issues that occur with spoofing mitigation
  • troubleshoot a DHCP snooping issue
  • troubleshoot a DAI issue
  • troubleshoot an IP source guard issue
  • describe PVLAN and protected port issues that can occur
  • troubleshoot a PVLAN issue
  • troubleshoot an isolated VLAN issue
  • describe the issues that can occur with VACLs
  • troubleshoot a VACL issue
  • identify the IPv4 and IPv6 ACL issues that can occur
  • describe ACL configuration guidelines
  • analyze an ACL configuration
  • recognize commands used to verify ACL operations
  • recognize how to troubleshoot an AAA method list issue
  • troubleshoot 802.1x authentication
  • troubleshoot a security issue in a given scenario
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