S4048-ON Installation Guide January 2019

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LED behavior

The following S4048–ON switch LED behavior is seen during open networking installation environment (ONIE) operations:

Figure 1. S4048–ON LEDsIllustration of the S4048–ON LEDs
  1. Master LED
  2. System LED
  3. Power LED
  4. Fan LED
  5. Locator LED
  6. SFP+ link/activity LEDs
  7. Stack LED
  8. USB port LED
  9. QSFP+ link/activity LEDs
Table 1. S4048–ON LED behavior . Table listing the S4048-ON LED behavior.
LEDDescription
System Status/Health LED
  • Solid green—Normal operation
  • Flashing green—Booting
  • Solid amber—Critical system error
  • Flashing amber—Non-critical system error, fan failure, or power supply failure
Power LED
  • Off—No power
  • Solid Green—Normal
  • Solid amber—POST is in process
  • Flashing amber—Power supply failed
MASTER LED
  • Off—Switch is in Stacking Slave mode
  • Solid green—System is in Stacking Master or Standalone mode
FAN LED
  • Solid green—fan powered and running at the expected RPM
  • Solid amber—fan failed including incompatible airflow direction when you insert the PSU or fan trays with differing airflows
PSU LED
  • Solid green—Normal operation
  • Solid amber—Power supply critical event causing a shutdown
  • Flashing amber—Power supply warning event; power continues to operate.
LOCATOR LED
  • Off—Locator function is disabled
  • Flashing blue—Locator function is enabled
Table 2. Management Ethernet port LEDs . Table listing the Management Ethernet port LED behavior.
LEDDescription
Link LED
  • Off—No Link
  • Solid green—Link on 1 Gbps speed
  • Solid yellow—Link on 10/100 Mbps speeds
Table 3. SFP+ port LEDs. Table listing the SFP+ port LED behavior.
LEDDescription
Link LED
  • Off—No Link
  • Solid green—Link on 10 Gbps speed
  • Solid amber—Link on 1 Gbp speed
Activity LED
  • Off—No Link
  • Blinking green—Transmit/receive is active
Table 4. Default 1x40G mode QSFP+ port LEDs. Table listing the QSFP+ port LED behavior.
LEDDescription
Link LED
  • Off—No Link
  • Solid green—Link operating at maximum speed—40 Gbps
  • Solid amber—Link operating at lower speed—10 Gbps
  • Flashing amber—one second on and one second off—port beacon
Activity LED
  • Off—No Link
  • Flashing green—Link activity at maximum speed—40 Gbps
  • Flashing amber—Link activity at lower speed—10 Gbps
Table 5. 4x10G mode QSFP+ port LEDs. Table listing the QSFP+ port LED behavior.
LEDDescription
Link LED
  • Off—No Link
  • Solid green—Link operating at 10 Gbps speed
  • Solid amber—Link operating at lower 1 Gbps speed
Activity LED
  • Off—No Link
  • Flashing green—Link activity at 10 Gbps speed
  • Flashing amber—Link activity at 1 Gbps speed

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