MENMON
MEN Mikro Elektronik GmbH
99
20A014-00 E2 – 2007-08-16
4.5
Diagnostic Tests
4.5.1
Ethernet
Table 35.
MENMON – Diagnostic tests: Ethernet
4.5.1.1
Ethernet Internal Loopback Test
The test
• configures the network interface for loopback mode (on PHY)
• verifies that the interface's ROM has a good checksum
• verifies that the MAC address is valid (not
0xFFFFFF
…)
• sends 10 frames with
0x400
bytes payload each
• verifies that frames are correctly received on the same interface.
If the network interface to test is the currently activated interface for the MENMON
network stack, the interface is detached from the network stack during test and
reactivated after test.
Checks:
• Connection between CPU and LAN controller
• Connection between LAN controller and PHY
Does not check:
• Connection between PHY and physical connector
• Interrupt line
• All LAN speeds
Test Name
Description
Availability
ETHER0
Ethernet 0 (LAN 1) internal loopback test
Groups: POST AUTO
Always
ETHER1
Ethernet 1 (LAN 2) internal loopback test
Groups: POST AUTO ENDLESS
Always
ETHER0_X
Ethernet 0 (LAN 1) external loopback test
Groups: NONAUTO ENDLESS
Always
ETHER1_X
Ethernet 1 (LAN 2) external loopback test
Groups: NONAUTO ENDLESS
Always