Cisco TSHOOT 1.0: Network Layer Connectivity, OSPF, and EIGRP

The audience profile for SkillSoft’s TSHOOT 1.0: Troubleshooting and Maintaining Cisco IP Networks training will be established IT professionals. They should have completed 640-802 Cisco Certified Network Associate, or 640-822 Interconnecting Cisco Networking Devices Part 1 and 640-816 Interconnecting Cisco Networking Devices Part 2. In addition to 640-802 Cisco Certified Network Associate certification, it is recommended that they have practical experience in installing, operating, and maintaining Cisco routers and switches in an enterprise environment.

Please contact us for information about prerequisites.

Expected Duration
150 minutes

IP routing is the core technology deployed in all current enterprise networks and is used in all areas of the network. For most connectivity problems in IP networks, the network layer is the point where troubleshooting processes start. Enhanced Interior Gateway Routing Protocol (EIGRP) and the Open Shortest Path First (OSPF) protocol are routing protocols that are commonly used in large enterprise networks. Troubleshooting problems related to the exchange of routing information is an essential skill for any network engineer who is involved in the implementation and maintenance of large routed enterprise networks that use EIGRP or OSPF as the interior gateway protocol (IGP).
This course provides the essential skills and knowledge needed to resolve network layer problems successfully. This includes coverage of the processes and data structures used by routers to forward IP packets, and the Cisco IOS tools available to diagnose problems related to IP packet forwarding. The data structures used by both EIGRP and OSPF, the flow of routing information between routers running EIGRP and OSPF, as well as the processing of routing information inside the router are detailed. In addition, the Cisco IOS commands that you can use to gather information from the EIGRP and OSPF data structures and routing processes are reviewed and individual case studies are presented to illustrate the use of the commands as part of a structured troubleshooting process.


Troubleshooting Network Layer Connectivity

  • recognize the processes involved in routing a packet across multiple routed hops
  • predict and interpret packet headers in a given scenario
  • identify data structures that a router uses to forward Layer 3 packets
  • recognize how Layer 3 and Layer 2 protocol tables relate when forwarding IP packets
  • resolve problems related to IP connectivity in a given scenario
  • Troubleshooting EIGRP

  • resolve problems related to the exchange of routing information in EIGRP
  • resolve problems related to EIGRP
  • recognize how EIGRP routing problems can be resolved using the relevant methods
  • Troubleshooting OSPF

  • resolve problems related to the exchange of routing information
  • recognize the role and content of fundamental OSPF LSA types
  • resolve problems related to OSPF
  • recognize how a routing problem can be resolved using the relevant methods




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