Identifying and Resolving Issues with Juniper Network Interfaces
Question
-- Exhibit --
user@router# run show interfaces terse
Interface Admin Link Proto Local
fe-0/0/0 up up
fe-0/0/0.0 up upinet 10.0.39.2/24
iso
mpls
fe-0/0/1 up up
fe-0/0/1.0 up upinet 10.0.18.2/24
fe-0/0/1.5 down up inet 10.0.19.2/24
-- Exhibit --
An administrator is unable to ping any address on the 10.0.19.0/24 subnet. To identify the problem, the administrator uses the command shown in the exhibit.
Which step should be taken to solve the problem?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.C
Based on the output of the "show interfaces terse" command, we can see that interface fe-0/0/1.5 is in the down state, which means it is not operational. Additionally, the IP address associated with this interface is on the same subnet as the address that the administrator is trying to ping and failing.
To solve the problem, the administrator should issue the command activate interfaces fe-0/0/1.5. This command will activate the interface and bring it up. Once the interface is up, the administrator should be able to ping addresses on the 10.0.19.0/24 subnet.
Option A, checking the physical cable, may be necessary if the interface does not come up after issuing the activate command. However, this step should be taken only if the activate command does not resolve the issue.
Option C, issuing the command delete interfaces fe-0/0/1.5 disable, would delete the interface configuration and disable it. This step is not necessary to solve the problem, as the interface can be brought up with the activate command.
Option D, reconfiguring the IP address, is not necessary to solve the problem. The IP address is correctly configured, and the issue is with the interface being down.
