ConnectX-2 Ethernet Card User Manual
Rev 1.6
Mellanox Technologies
17
2.1.3 LED Assignment
The board has I/O LEDs located on the I/O panel. The green LED, when lit, indicates that the
driver is running and a valid physical connection between nodes exists. If the green LED is blink-
ing, it indicates a problem with the physical link. The yellow LED when lit, indicates a valid data
activity link, this is the logical link. The yellow LED lights up when the network is discovered
over the physical link. A valid data activity link without data transfer is designated by a constant
yellow LED indication. A valid data activity link with data transfer is designated by a blinking yel-
low LED indication. If the LEDs are not active, either the physical link or the logical link (or both)
connections have not been established.
Figure 4: LED - Port Association
Figure 5: Physical and Logical Link Indications
Port 1
Port 2
Table 5 - LEDs
Port Number
LED Name
Port 1
Physical Link - Green
Constant on indicates a good physical link
Blinking indicates a problem with the Physical
link
Data Activity - Yellow
Blinking indicates Data Transfer
Constant on indicates no Data Transfer
Port 2
Physical Link - Green
Constant on indicates a good physical link
Blinking indicates a problem with the Physical
link
Data Activity - Yellow
Blinking indicates Data Transfer
Constant on indicates no Data Transfer
Port 1
Port 2
