3Com Fast EtherLink 3C515-TX, Руководство пользователя

Страница: 48 / 80

5-2 C
HAPTER
5: T
ROUBLESHOOTING
Troubleshooting with the Diagnostic Tests
The two diagnostic tests on the EtherDisk diskette check
the NIC’s overall operation and isolate faults. You can run
the diagnostic tests after installing a NIC, or you can run
them when a fault is suspected.
If the tests in their default configuration do not isolate
the problem, you can change the test parameters to meet
specific situations.
The diagnostic tests are divided into Group 1 and
Group 3 tests. The Group 2 test does not apply to the
3C515-TX NIC.
The Group 1 tests check the physical components,
connectors, and circuitry on the NIC.
The Group 3 test (Echo Exchange Test) tests the NIC’s
ability to transmit and receive data while on the network.
If the NIC passes both tests successfully, hardware failure
is ruled out. If a problem still remains, look at cabling,
software, and other issues that affect functionality on the
network.
Table 5-1 LED Descriptions
LED Description Steady Off
10 LNK Green:
Link integrity Good 10BASE-T
connection between
NIC and hub No connection
between NIC
and hub
100 LNK Green:
Link integrity
Good 100BASE-TX
connection between
NIC and hub No connection
between NIC
and hub
ACT Yellow:
Port traffic for
either speed Heavy network
traffic No traffic