Diagnose a Suspected Hardware Problem with a
Fast Ethernet or Gigabit Ethernet Interface

Purpose

When you suspect a hardware problem, take the following steps to help verify if there is a problem.

Steps To Take

To diagnose a suspected hardware problem with the Ethernet interface, follow these steps:

1. Create a Loopback
2. Verify That the Fast Ethernet or Gigabit Ethernet Interface Is Up
3. Configure a Static Address Resolution Protocol Table Entry
4. Clear Fast Ethernet or Gigabit Ethernet Interface Statistics
5. Ping the Fast Ethernet or Gigabit Ethernet Interface
6. Check for Fast Ethernet or Gigabit Ethernet Interface Error Statistics