Tyco Electronics PL0349 - Manual (Page 10)

8 Port Ethernet Smart Switch With Fibre Uplink
Tyco Electronics Page 10
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
correctly.
Data Problems
1. Ensure that the Ethernet partner device (switch, router, NIC etc)
connected to the RJ-45 UTP port of the switch is set for auto-
negotiation. If this Ethernet partner device does not support
auto-negotiation, then you need to program that device to
operate at 100Mbit/s half duplex or 10Mbit/s half duplex or
program this switch using the console port.
2. If the switch and the partner device cannot auto-negotiate then
both units automatically revert to the lower level of half-duplex
operation. This issue is common to all auto-negotiating Ethernet
devices and the 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.
5. Select the proper fibre cable for your network. See page 4 for
the supported cable types and installation settings.
6. Ensure that the optical loss budget of the fibre uplink is within
the limits specified on page 11. Note that optical patch cables
and other joints and splices can introduce additional optical
losses that reduce the working distance of the fibre link.
7. Restore factory settings by selecting option 3 on the main menu
of the console port.
Console Problems
1. Verify that the PC has been set up with the correct serial link
settings as detailed on page 7.
2. Ensure that the serial data cable supplied with the switch is
used.
If you still have problems and need further advice, please see
Technical Support section on page 2 to obtain more information.