Allied Telesis AT-8948 Spécifications télécharger pdf (Page 21)

Hardware Reference 19

C613-03075-00 REV A

Test Facility

This section introduces the Test Facility. The Test Facility is built into all

AT-8900 Series software. For detailed information on operating the Test Facility,

see the Test Facility chapter of the AT-8900 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 or Frame Relay.

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 16 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

All interfaces connected by crossover cables are tested. Test results are

displayed with the command:

SHOW TEST

which produces a display like that shown in Figure on page 20. A more

detailed output (with frame counts) can be displayed with the command:

SHOW TEST COUNT

which is shown in Figure on page 21.

Table 7: Pin assignments, 10/100/1000BASE-T RJ-45 four pair crossover

cable .

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-

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 39 40

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Allied Telesis AT-8948 Spécifications Page 21