Tyco Electronics 0-1591093-X Trouble Shooting, Power, Data Problems, Optional Fibre Uplink Module

24 and 16 Port Smart Switch II – User Manual Page 25

Trouble Shooting

Power

1.Verify that the AC power is present and that the external fusing is correct and compliant with national requirements. The green Power LED should be lit to indicate that the switch is powered.

Data Problems

1.Ensure that the Ethernet partner device (switch, router, NIC etc) connected to the RJ-45 port of the switch is set for auto-negotiation. If this Ethernet partner device does not support auto-negotiation, then the switch can be programmed to apply the required speed and duplex modes to match the legacy partner equipment.

2.If the switch and the partner device cannot auto-negotiate then the units automatically revert to the lower level of half-duplex operation. This issue is common to all auto-negotiating Ethernet devices and symptoms of incorrect negotiation include data errors and fragmented packets.

3.Auto-negotiation can take up to 30 seconds to complete, depending on the partner device.

4.Ensure that the switch is not overheating due to obstructed airflow around the side vents.

Optional Fibre Uplink Module

1.Select the proper fibre cable for your network. The multi-mode module must use multi-mode fibre cable and the single-mode module must use single-mode fibre cable. See page 5 for the supported cable types and installation settings.

2.Ensure that the optical loss budget of the fibre uplink is within the limits specified on page27. Note that optical patch cables and other joints and splices can introduce additional optical losses that reduce the working distance of the fibre link.

Product Number 0-1591093-x 0-1591047-x	Issue 1
© Tyco Electronics 2005