IBM TotalStorage NAS 300, Справочник пользователя

Страница: 110 / 200

If you directly connect two workstations (without a hub) or if you are not using a
hub with X ports, use a crossover cable.
Note: To determine whether a hub has an X port, check the port label. If the
label contains an “X,” the hub has an X port.
v If you are connecting through an Ethernet hub or repeater, make sure that the
signal LEDs are operational while the device is on and connected to the LAN.
v Determine whether the hub supports auto-negotiation. If not, configure the
integrated Ethernet controller manually to match the speed and duplex mode of
the hub.
v Check the Ethernet controller LEDs on the operator information panel.
These LEDs indicate whether a problem exists with the connector, cable, or hub.
– The Ethernet Link Status LED is on when the built-in Ethernet controller
receives a LINK pulse from the hub. If the LED is off, there might be a bad
connector or cable, or a problem with the hub.
– The Ethernet Transmit/Receive Activity LED is on when the built-in Ethernet
controller sends or receives data over the Ethernet network. If the Ethernet
Transmit/Receive Activity LED is off, make sure that the hub and network are
operating and that the correct device drivers are loaded.
v Make sure that you are using the correct device drivers, supplied with your NAS
Gateway 300.
v Check for causes for the problem that are specific to the operating system.
v Make sure that the device drivers on the client and NAS Gateway 300 are using
the same protocol.
v Test the Ethernet controller by running the NAS Gateway 300 diagnostic
programs, as described in “Diagnostic programs” on page 93.
Gigabit Ethernet controller troubleshooting chart
Use the following troubleshooting chart to find solutions to Ethernet controller
problems that have definite symptoms.
Table 9. Ethernet controller troubleshooting chart
Ethernet controller problem Suggested action
Ethernet-link status light is
not on. v Ensure that the engine is powered on.
v Check all connections at the Ethernet controller.
v Check the cable.
v If you manually configured the duplex mode, ensure that you also manually
configured the speed.
v Run Base System Diagnostics on the LEDs.
If the problem remains, go to “Starting the diagnostic programs” on page 94 to run all
of the diagnostic programs.
The Ethernet transmit/receive
activity light is not on. Note: The Ethernet Transmit/Receive Activity LED is on only when data is sent to or
by this Ethernet controller.
v
Ensure that you have loaded the network device drivers.
v The network might be idle. Attempt to send data from this workstation.
v
Run Base System Diagnostics on the LEDs.
v The function of this LED can be changed by device-driver load parameters. If
necessary, remove any LED parameter settings when you load the device drivers.
Data is incorrect or sporadic. v Ensure that you are using Category 5 cabling when operating the NAS Gateway
300 at 100 Mbps or 1000 Mbps.
v Make sure that the cables do not run close to noise-inducing sources, such as
fluorescent lights.
96
NAS Gateway 300 User’s Reference