NTC/362: Fundamentals of Networking

 NTC/362: Fundamentals of Networking

Q: You are troubleshooting connectivity issues with a router. You type in the command show ip interface brief. You notice that the status is “administratively down” and the protocol is “down.” What is the meaning of this information?

A: The interface has a shutdown command configured on it.

Explanation: When you notice that the status of an interface is “administratively down,” the interface has a shutdown command configured on it.

If the status is “down” and the protocol is “down,” there is a physical layer problem. If the status is “up” and the protocol is “down,” there is a Layer 2 problem. If the status is “up” and the protocol is “up,” the interface is functioning.