Troubleshooting; Universal Troubleshooting Process; Typical Troubleshooting Cases; Ethernet Port Does Not Work After Being Connected To An Ethernet Cable - Ruijie RG-AP840-I (V2) Hardware Installation And Reference Manual

Hardware Installation Guide
6

Troubleshooting

6.1

Universal Troubleshooting Process

6.2

Typical Troubleshooting Cases

6.2.1

Ethernet Port Does Not Work After Being Connected to an Ethernet Cable

Check whether the device on the other end of the Ethernet is working normally, and then check whether the
Ethernet cable matches the current working speed. In addition, check whether the cable is connected normally.
6.2.2

Indicator Is Off for a Long Time


PoE power feeding: Check whether the other end of the PoE cable supports 802.11af or higher PoE
standards, and then check whether the Ethernet cable is properly connected.

Power adapter: Detect whether the adapter has received mains electricity, and then check whether the
adapter works normally.
6.2.3

Indicator Remains Red for a Long Time

If the indicator stays red for a long time, it means that the Ethernet port cannot be connected. Check the
connection on the Ethernet port.
6.2.4

Indicator Remains Green for a Long Time

The device needs to be initialized when it is powered on. During the initialization, the indicator is in steady green.
When the initialization is finished, the indicator turns blue. Note: If the indicator is still green after 1 hour, the
device initialization fails, and you can determine that the device is faulty.
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Troubleshooting