Sfp Lnk Leds Do Not Turn On; 100/1000 Leds Do Not Turn On; 100/1000 Ethernet Port Data Transmission; Table 105 Sfp Lnk Led Troubleshooting - ZyXEL Communications IES-1248-71 User Manual

Chapter 58 Troubleshooting

58.3 SFP LNK LEDs Do Not Turn On

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

Table 105 SFP LNK LED Troubleshooting

STEPS
1
2
3
4

58.4 100/1000 LEDs Do Not Turn On

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

Table 106 100/1000 LED Troubleshooting

STEPS
1
2
3
4

58.5 100/1000 Ethernet Port Data Transmission

The Ethernet port's LED is on, but data cannot be transmitted.

Table 107 Troubleshooting Data Transmission

STEPS
1
2
3
4
426
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-1248 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-1248 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.
CORRECTIVE ACTION
Make sure that the Ethernet port has the appropriate mode setting.
Make sure that the IES-1248's IP settings are properly configured.
Check the VLAN configuration.
Ping the IES-1248 from a computer behind the peer Ethernet device.
IES-1248-71/73 User's Guide