Specifications

Hardware Reference 21
C613-03066-00 REV D
Test Facility
This section introduces the Test Facility. The Test Facility is built into all
AT-8800 Series software. For detailed information on operating the Test
Facility, see the Test Facility chapter of the AT-8800 Series Software Reference.
Any interfaces being tested are dedicated to the Test Facility. The Test Facility
can be thought of as a specialised interface module like PPP.
Before using the test facility, disable any configurations
(SET CONFIGURATION=NONE) and restart or reboot the switch.
Ethernet LAN Port Tests
A crossover cable is required to run an Ethernet LAN test. See “Useful Cables”
on page 18 for details of how to make a suitable cable. To start the test, loop a
four-pair crossover or straight-through cable between any two RJ-45 ports and
enter:
ENABLE TEST INT=ALL
A loopback plug, instead of a crossover cable, can be used to test SC and MT-RJ GBIC
interfaces.
Table 8: Pin assignments, 10/100/1000BASE-T RJ-45 four pair crossover
cable .
End 1 End 2
Pin Pair Pin Pair
1 Pair 1+ 3 Pair 2+
2 Pair 1- 6 Pair 2-
3 Pair 2+ 1 Pair 1+
6 Pair 2- 2 Pair 1-
4 Pair 3+ 7 Pair 4+
5 Pair 3- 8 Pair 4-
7 Pair 4+ 4 Pair 3+
8 Pair 4- 5 Pair 3-