Allied Telesis AT-2912T - Manual (Page 84)

MS-DOS Diagnostics
84
D1. Mac Loopback Test
Function: This is internal loopback data transmit/receive test. It initializes
the MAC into internal loopback mode and transmits 100 packets. The data
should be routed back to the receive channel and received by the receive
routine which verifies the integrity of data. One Fast rate is used for this
test.
Default: Enabled
D2. Phy Loopback Test
Function: This test is same as D1. Mac Loopback Test except, the data is
routed back via physical layer device. One Giga bit rate is used for this
test.
Default: Enabled
D3. RJ45 Loopback Test
Function: This is external loopback test. From the UUT point of view, no
loopback mode is configured. The data expected to be routed back by
RJ45 loopback connector. 100M/s and 1000M/s are used for this test.
Default: Disabled
D4. MII Miscellaneous Test
Function: This function tests the auto-polling and phy-interrupt
capabilities. These are the functionalities of the phy.
Default: Enabled
D5. MSI Test
Function:
Default: Disabled