Perform Command
S?# show interfaces
Verify Proper
Cables are used
Remove EMI
Sources
Verify Duplex
settings on both
ends
Is
Interface
Up?
Yes
Any
Indication
of EMI
Yes
Is
Problem
Fixed?
No
Done
Yes
Escalate
No
Check Cables
and Connectors
for damage
Verify speed is
set correctly on
both ends
No