SwitchBlade x3112 Installation Guide - Allied Telesis

Chapter 3: Troubleshooting
AT-SBx31XZ4 XFP Line Card Port LED is Off
For fiber optic uplink ports that have an XFP transceiver installed, verify
that the 1000 LINK LED is ON. If a 1000 LINK LED is off but the
transceiver is present, do the following:
Verify that the end node connected to the port is powered ON and is
operating properly.
Check that the fiber optic cable is securely connected to the XFP
transceiver in the AT-SBx31XZ4 XFP Line Card and to the port on the
remote end node. The dual ports in an XFP transceiver consist of two
separate connectors, where each connector connects to a separate
fiber strand.
1858
Figure 70. Dual Ports of XFP Transceiver
When you connect a fiber optic cable, be sure that the receive fiber
connector of the XFP transceiver is connected to the transmit
connector on the remote end node, and that the transmit fiber
connector is connected to the receive connector on the remote node.
Verify that the XFP transceiver is IEEE 802.3ae (10G Ethernet) and
XFP MSA compliant. If an XFP transceiver meets a “Fiber Channel”
standard, it may not link up.
Verify that the XFP transceiver is completely inserted into the XFP slot.
Make sure that you are using the appropriate type of fiber optic cable
and that the cable length does not exceed the allowed maximum
distance. For cable specifications, refer to the data sheet for your XFP
transceiver.
Use a fiber optic tester to test the attenuation on the cable to
determine if the strength of the fiber optic signal falls below acceptable
limits. For fiber optic port specifications, refer to the data sheet for your
XFP transceiver.
Check that the operating specifications (for instance, wavelength and
maximum operating distance) of the fiber optic port on the remote end
node are compatible with the fiber optic port on the AT-SBx31XZ4 XFP
Line Card.
102