Zyxel VES-1624FT-55A [276/312] A 100 1000 ethernet port s leds do not turn on

Zyxel VES-1624FT-55A [276/312] A 100 1000 ethernet port s leds do not turn on
Chapter 53 Troubleshooting
VES-1624FT-55A User’s Guide
276
53.3 SFP LNK LEDs Do Not Turn On
The LEDs for one of the SFP slots do not turn on.
53.4 100/1000 LEDs Do Not Turn On
A 100/1000 Ethernet port’s LEDs do not turn on.
53.5 100/1000 Ethernet Port Data Transmission
The Ethernet port’s LED is on, but data cannot be transmitted.
Table 120 SFP LNK LED Troubleshooting
STEPS CORRECTIVE ACTION
1 Make sure that the Ethernet port’s mode is set to match that of the peer Ethernet device.
2 Check the cable and connections between the SFP slot and the peer Ethernet device.
3 Check the mini GBIC transceiver.
4 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.
Table 121 100/1000 LED Troubleshooting
STEPS CORRECTIVE ACTION
1 Each 100/1000M RJ-45 Ethernet port is paired with a mini GBIC slot. The IP DSLAM
uses one connection per pair.
2 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 IP DSLAM tries to make a
fiber connection first and does not attempt to use the RJ-45 port if the fiber connection is
successful.
3 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.
4 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.
Table 122 Troubleshooting Data Transmission
STEPS CORRECTIVE ACTION
1 Make sure that the Ethernet port has the appropriate mode setting.
2 Make sure that the IP DSLAM’s IP settings are properly configured.
3 Check the VLAN configuration.
4 Ping the IP DSLAM from a computer behind the peer Ethernet device.

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