Technical Documentation
Access Port and Uplink Port LEDs on a QFX3500 Device
Each access port and uplink port on a QFX3500 device has two LEDs. The two figures in this topic show the location of those LEDs:
- Figure 1 shows the location of the LEDs on the SFP+ access ports.
- Figure 2 shows the location of the LEDs on the QSFP+ uplink ports.
Figure 1: LEDs on the SFP+ Access Ports
Figure 2: LEDs on the QSFP+ Uplink Ports
The LEDs labeled Link/Activity LED in Figure 1 and Figure 2 indicate link activity or faults. The LEDs labeled Status LED in Figure 1 and Figure 2 indicate link status.
 | Tip: By default, all access ports are configured as Ethernet interfaces. If you insert a Fibre Channel transceiver, the LEDs do not light until you configure the port as a Fibre Channel interface in Junos OS. Likewise, the LEDs do not light if you insert an Ethernet transceiver in a port configured as a Fibre Channel interface. |
Table 1 describes the SFP+ access port LEDs.
Table 1: Network Port LEDs on SFP+ Access Ports on a QFX3500 Device
LED | Color | State | Description |
|---|---|---|---|
Link/Activity | Unlit | Off | No link is established, there is a fault, or the link is down. |
Green | On steadily | A link is established, but there is no link activity. | |
Blinking | A link is established, and there is link activity. | ||
Status | Unlit | Off | No transceiver is installed in the port, the port is configured for a different interface, or the transceiver is not supported. |
Green | On steadily | An Ethernet transceiver is installed in the port. | |
Amber | On steadily | A Fibre Channel transceiver is installed in the port. |
Table 2 describes the QSFP+ uplink port LEDs.
Table 2: Uplink Port LEDs on QSFP+ Uplink Ports on a QFX3500 Device
LED | Color | State | Description |
|---|---|---|---|
Link/Activity | Unlit | Off | No link is established, there is a fault, or the link is down. Note: The LED remains unlit only if all four of the 10-Gigabit Ethernet SFP+ breakout links are down. |
Green | On steadily | A link is established, but there is no link activity. Note: The LED is lit green when at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established. | |
Blinking | A link is established, and there is link activity. Note: The LED is lit green when at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established. | ||
Status | Unlit | Off | No transceiver is installed in the port, or the transceiver is not supported. |
Green | On steadily | A transceiver is installed in the port. |
