B&B Electronics 856-14869--93 - Manual User Manual

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Troubleshooting

• If two iMcV-Giga-FiberLinX-II Host/Remote units are not communicating

properly, make sure one is a Host and the other is a Remote. If the second unit
is not configured as a Remote, it will be recognized as a Standalone unit and the
Host and Remote units will not communicate with each other properly. Setting
the OPTICS (or UPLINK) port management DIP Switch #3 to the ON position
on both modules will allow performing a simple ping test. This is possible only if
pinging from the computer through the optics uplink port, which is highly
unusual. The EXT or data switch must be enabled and connected to the
computer to ping either device.

• If a link on a twisted pair port cannot be established, make sure the cable is in

working order; if not, replace the cable (iMcV-Giga-FiberLinX-II includes
AutoCross; a link should be detected regardless of the Cat5 cable type).

• If a fiber link cannot be established, make sure that the fiber transceivers on

iMcV-Giga-FiberLinX-II are not over/under driving the fiber receivers. For fiber
specifications, please visit www.imcnetworks.com/support/fpblookup.cfm. Make
sure the fiber mode and wavelength on both iMcV-Giga-FiberLinX-II units match
(i.e., both are 1310 nm single-mode fiber).

• Make sure the port speeds on iMcV-Giga-FiberLinX-II match those on the end

devices connected to iMcV-Giga-FiberLinX-II. IMC Networks recommends
configuring all connected devices to Auto Negotiation, or if using Force mode,
ensure speed and duplex settings match.

• If using single-strand fiber, make sure the pair of devices is compatible single-

strand fiber devices. For example, an iMcV-Giga-FiberLinX-II TX/SSFX-SM1310-
SC which transmits 1310 nm and receives 1550 nm must be connected to a
device which transmits 1550 nm and receives 1310 nm.

• If using an iMcV-Giga-FiberLinX-II unit with an SFP port and it is not functioning

properly or at all, make sure that the installed SFP module is the correct speed
(1000 Mbps).

• When using the FiberAlert feature, make sure that FiberAlert is enabled on only

one unit when connecting two iMcV-Giga-FiberLinX-II units, or when connecting
an iMcV-Giga-FiberLinX-II to another IMC Networks media converter which
includes the FiberAlert feature.

• If management is not functioning properly, make sure that the DIP Switch

settings are accurate for the port to be managed.