Allied Telesis MMC10G Series, Руководство по установке

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MMC10G Series Mini Media Converter Installation Guide
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
Verify that the operating specifications and wave lengths of the
fiber-optic port on the SFP+ transceiver and the remote end-node
are compatible.

Verify that the correct type of fiber-optic cabling is being used.

Verify that the port is connected to the correct fiber-optic cable.
This is to eliminate the possibility that the port is connected to the
wrong remote end-node, such as a powered-off device.

Try connecting another end node to the fiber-optic port using a
different cable. If the port is able to establish a link, then the
problem is with the cable or with the other end node.

Verify that the fiber TX strand is connected to link partner's RX, and
vice versa.

If the remote end node is a management device, use its
management firmware to determine whether its port is enabled.

Test the attenuation on the fiber-optic cable with a fiber-optic tester
to determine whether the optical signal is too weak (sensitivity) or
too strong (maximum input power).
Problem 6: Fiber speed LED is blinking and alternating between green
and amber (MMC10GT).
Solution: The media converter cannot detect the speed of the installed
SFP. The copper port is disabled in this scenario.
Problem 7: Network traffic is not being received at the end point.
Solution: Verify cabling by using loopback mode attached to a managed
switch port that can transmit test packets.