Allied Telesis SwitchBlade 4000 Series Switch Hardware Reference - Manual (Page 45)

Hardware Reference 45
C613-03060-00 REV H
1000BASE crossover cable
For 1000BASE test cables, all four pairs are used and the cable is wired in a
crossover configuration. This cable can also be used, in conjunction with the
software test facility, to test 10/100BASE network ports. Table 11 on page 45
lists the pin assignments.
1. This cable can also be used with 10/100BASE interfaces.
Test Facility
This section introduces the Test Facility. The Test Facility is built into all
SwitchBlade software. For detailed information on operating the Test Facility,
see the Test Facility chapter of the SwitchBlade 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 or Frame Relay.
Ethernet LAN Port Tests
A crossover cable is required to run an Ethernet LAN test. See “Useful Cables”
on page 41 for details of how to make a suitable cable. To start the test, loop a
crossover cable between any two RJ-45 line card ports and enter:
ENABLE TEST INT=ALL
All interfaces connected by crossover cables are tested. Test results are
displayed with the command:
SHOW TEST INT
which produces a display like that shown in Figure 6 on page 46. A more
detailed output (with frame counts) can be displayed with the command:
SHOW TEST COUNT
which is shown in Figure 7 on page 46.
Table 11: Pin assignments, 10/100/1000BASE-T RJ-45 four pair crossover cable 1 .
End 1 End 2
Pin Pair Pin Pair
1 Pair 1+ 1 Pair 2+
2 Pair 1- 2 Pair 2-
3 Pair 2+ 3 Pair 1+
6 Pair 2- 6 Pair 1-
4 Pair 3+ 4 Pair 4+
5 Pair 3- 5 Pair 4-
7 Pair 4+ 7 Pair 3+
8 Pair 4- 8 Pair 3-