Chapter 10. Troubleshooting Ethernet LANs
This chapter covers the following exam topics:
LAN Switching Technologies
Configure and verify trunking on Cisco switches
DTP
Autonegotiation
Network Device Security
Configure and verify Switch Port Security features such as
Static / dynamic
Violation modes
Err disable
Shutdown
Protect restrict
Troubleshooting
Troubleshoot and Resolve VLAN problems
identify that VLANs are configured
port membership correct
IP address configured
Troubleshoot and Resolve trunking problems on Cisco switches
correct trunk states
correct encapsulation configured
correct VLANs allowed
Troubleshoot and Resolve Layer 1 problems
Framing
CRC
Runts
Giants
Dropped packets
Late collision
Input / Output errors
This chapter focuses ...
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