Chapter 12. Troubleshooting Ethernet LANs

This chapter covers the following exam topics:

1.0 Network Fundamentals

1.7 Apply troubleshooting methodologies to resolve problems

1.7.a Perform fault isolation and document

1.7.b Resolve or escalate

1.7.c Verify and monitor resolution

2.0 LAN Switching Technologies

2.1 Describe and verify switching concepts

2.1.a MAC learning and aging

2.1.b Frame switching

2.1.c Frame flooding

2.1.d MAC address table

2.3 Troubleshoot interface and cable issues (collisions, errors, duplex, speed)

2.4 Configure, verify, and troubleshoot VLANs (normal range) spanning multiple switches

2.4.a Access ports (data and voice)

2.4.b Default VLAN

2.5 Configure, verify, and troubleshoot inter-switch connectivity

2.5.a Trunk ports ...

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