Sfp Lnk Leds Do Not Turn On; 100/1000 Leds Do Not Turn On; Table 221 Sfp Lnk Led Troubleshooting; Table 222 100/1000 Led Troubleshooting - ZyXEL Communications IES-1248-51V User Manual

Chapter 70 Troubleshooting
Table 220 ALM LED Troubleshooting (continued)
STEP
3
4

70.3 SFP LNK LEDs Do Not Turn On

The LEDs for one of the SFP slots do not turn on.

Table 221 SFP LNK LED Troubleshooting

STEPS
1
2
3
4

70.4 100/1000 LEDs Do Not Turn On

A 100/1000 Ethernet port's LEDs do not turn on.

Table 222 100/1000 LED Troubleshooting

STEPS
1
2
3
4
590
CORRECTIVE ACTION
Make sure you can feel and/or hear the fans working - working fans emit a
low buzz and blow air.
If the voltage levels are outside the allowed range, take a screen shot of the
statistics monitor command display and contact your vendor.
CORRECTIVE ACTION
Make sure that the Ethernet port's mode is set to match that of the peer
Ethernet device.
Check the cable and connections between the SFP slot and the peer Ethernet
device.
Check the mini GBIC transceiver.
Make sure that the peer Ethernet device is functioning properly.
If the cable, transceiver and peer Ethernet device are all OK and the LEDs
stay off, there may be a problem with the SFP slot. Contact the distributor.
CORRECTIVE ACTION
Each 100/1000M RJ-45 Ethernet port is paired with a mini GBIC slot. The IES
uses one connection per pair.
Check the Speed Mode settings in the ENET Port Setup screen. Make sure
that the 100/1000 Ethernet port's connection speed is set to match that of
the port on the peer Ethernet device. When an Ethernet port is set to Auto,
the IES tries to make a fiber connection first and does not attempt to use the
RJ-45 port if the fiber connection is successful.
Check the Ethernet cable and connections between the 100/1000 Ethernet
port and the peer Ethernet device.
Use 1000Base-T 4-pair (8 wire) UTP Cat. 5 Ethernet cables with the RJ-45
interface.
Make sure that the peer Ethernet device is functioning properly.
If the Ethernet cable and peer Ethernet device are both OK and the LEDs still
stay off, there may be a problem with the port. Contact the distributor.
IES-1248-51V User's Guide