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SwitchBlade x3112 Installation Guide
207
Fiber Optic Transceivers
The L/A LEDs on the AT-SBx31GS24, AT-SBx31GC40, AT-SBx31XS6,
and AT-SBx31XZ4 Line Cards are solid or flashing green when ports on
fiber optic transceivers have links to end nodes. If a transceiver is cabled
to an end node but the L/A LED is off, try the following:
If all of the L/A LEDs on the line cards in the chassis are off, try
pressing the eco-friendly button on the active master control card
to turn on the LEDs.
Check that the fiber optic transceiver is firmly inserted into the slot
on the line card.
Check that both ends of the fiber optic cable are securely
connected to the ports on the transceiver and end node.
Verify that the end node is powered on and operating properly.
Review the operating specifications of the fiber optic transceiver
and end node to verify that the devices have the same speed and
duplex mode.
Check that the operating specifications, including wavelength and
maximum operating distance, of the transceiver are compatible
with the fiber optic port on the end node.
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. The cable specifications for the transceivers
are provided in the installation instructions that ship with the
modules.
Use a fiber optic tester to test the whether the optical signal is too
weak (i.e., sensitivity) or too strong (i.e., maximum input power).
The operating specifications of the fiber optic transceivers are
shipped with the units.
If the problem is with an XFP transceiver in the AT-SBx31XZ4 Line
Card, be sure that the transceiver and end node are IEEE 802.3ae
(10G Ethernet) and XFP MSA compliant. An XFP transceiver or
port that meets a “Fiber Channel” standard may not link up properly
with its counterpart device.
Try replacing the fiber optic cable.
For SFP and XFP transceivers, check the two strands of the fiber
optic cable to be sure that the receive fiber connector 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 end node.
If a fiber port on a CSFP transceiver in the AT-SBx31GC40 Line
Card cannot establish a link with a remote network device,
compare the transmit and receive wavelengths of the transceiver