User Manual

Diagnostics and troubleshooting
Diagnostic information about the mpx110 is available through the chassis LEDs and the port LEDs
(Figure 23 (page 48)). Diagnostic information is also available through the mpx Manager GUI,
CLI event logs, and error displays. This section describes the following:
• Power-On Self-Test (POST) diagnostics (page 48)
• Heartbeat LED (page 48)
• Input Power LED (page 49)
• System Fault LED (page 49)
• Fibre Channel Port LEDs (page 49)
Figure 23 Locating LEDs
POST diagnostics
The mpx110 completes a series of tests as part of its POST procedure:
• Memory
• FLASH validation
• PCI device discovery
• Management Ethernet port
Heartbeat LED (green)
The Heartbeat LED indicates the status of the internal mpx110 processor and any POST error
results. Following a normal power-up, the Heartbeat LED flashes about once per second to indicate
that the mpx110 passed the POST and that the internal mpx110 processor is running. See
Table 15 (page 49) for a description of all Heartbeat LED flash codes.
48 Installation and upgrades