IMC Networks iMcV-Giga-FiberLinX-II - Manual (Page 47)

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IX - Troubleshooting
• If two iMcV-Giga-FiberLinX-II Host/Remote units are not communicating
properly, make sure one is a Host (DIP switch #8) and the other is a
Remote (DIP switch #7). 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 you to perform a simple ping test. This is possible only if
pinging from the computer through the optics uplink port, which is highly
unusual. You must enable the EXT or data switch and connect to the
computer to ping either device.
• If you cannot establish a link on a twisted pair port, ensure the cable is in
working order. If not, replace the cable (iMcV-Giga-FiberLinX-II includes
AutoCross; you should detect a link regardless of the Cat5 E cable type).
• If you cannot establish a fiber link, ensure the fiber transceivers on iMcV-
Giga-FiberLinX-II are not over/under driving the fiber receivers. For fiber
specifications, refer to www.imcnetworks.com/support/fpblookup.cfm.
Ensure the fiber mode and wavelength on both iMcV-Giga-FiberLinX-II units
match (i.e., both are 1310 nm single-mode fiber).
• Ensure 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 autonegotiation, or if using Force
mode, ensure speed and duplex settings match.
• If using single-strand fiber, ensure 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, ensure the installed SFP module is the correct
speed (1000 Mbps).
• When using the FiberAlert feature, ensure 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, ensure that the DIP switch
settings are accurate for the port you want to manage.