QFX5700 Routing and Control Board

Table 1: Physical Specifications of an RCB

Description	Value
Height	1.18 in. (2.99 cm)
Width	7.83 in. (19.88 cm)
Depth	8.05 in. (20.44 cm)
Weight	-
Power Requirement	80W

The ports located on the RCB, connect the RCB to one or more external devices on which system administrators can issue Junos OS Evolved CLI commands to manage the switch. In addition, ports to connect external clock interfaces for BITS and GPS function are also available on the RCB. See Figure 2.

The ports located on the RCB connect the RCB to one or more external devices on which system administrators can issue Junos OS Evolved CLI commands to manage the router. In addition, the RCB includes ports that you use to connect external clock interfaces for BITS and GPS functions.

The RCB interface ports with the indicated labels function as follows:

• CON—Connects the RCB to a system console through a serial cable with an RJ-45 connector.

• MGMT—Connects the RCB through an Ethernet connection to a management LAN (or any other device that plugs into an Ethernet connection) for out-of-band management. The port uses an autosensing RJ-45 connector to support 10-Mbps, 100-Mbps, or 1000-Mbps connections. Two small LEDs (an activity LED and a link LED) on the port indicate that the connection is in use.

  The link LED is:

  • Green (steady) when the 1000-Mbps link is up.

  • Orange (steady) when the 10/100-Mbps link is up.

  • Off when the link is down.

  The activity LED is:

  • Green (blinking) when traffic is passing through the port.

  • Off when traffic is not passing through the port.

  Both activity and link LEDs are off when the link is down.

• BITS—Building-integrated timing system (BITS) is the external clocking interface for connecting to external clocking devices.

• 10MHZ (one input and one output)—The 10-MHz timing connectors on the front panel of the router connect to external clock signal sources. The clocking ports provide the synchronized output clocks from any one of the reference clock inputs, based on the clock’s priority.

• PPS (one input and one output)—1-pulse-per-second (PPS) connector on the front panel of the router connects to external clock signal sources. The clocking ports provide the synchronized output clocks from any one of the reference clock inputs, based on the clock’s priority.

• USB—Provides a removable media interface through which you can install Junos OS Evolved manually. Junos OS Evolved supports USB version 2.0 and later.

The following buttons are located on the RCB:

• RESET button—When pressed, reboots the RCB as follows:

  • Short press reboots the RCB and the reset-reason logs the button press event. The press event is logged in the RCB FPGA register.

  • When pressed for more than 10 seconds, the RCB reboots with an option for BIOS recovery.

• Online/Offline button—When the RCB is offline and if the button is pressed (short press), the RCB starts booting. When the RCB is online and if the button is pressed for four seconds or more (long press), the RCB shuts down.

The LEDs—labeled SSD0, SSD1, PWR, STS, ALM, and MST— are located on the faceplate of the RCB. The functioning of the QFX5700 switch is controlled by the RCB, and the LEDs present on the RCBs displays the status and functioning of the QFX5700 chassis.

Table 2: QFX5700 RCB LEDs

LED	Color	State	Description
PWR	Green	On steadily	The RCB is online and functioning correctly.
		Blinking	The beacon feature is enabled.
	Dark	Unlit	The RCB is booting.
STS	Green	On steadily	The RCB is online and functioning correctly.
	Green	Blinking	The beacon feature is enabled.
	Yellow	On steadily	AThe RCB is booting.
	Yellow	Blinking	An error has been detected in the RCB.
	Dark	Unlit	The power supply is switched off.
ALM	Unlit	Off	The switch is halted or there is no alarm.
	Red	On steadily	A major hardware fault has occurred, such as a temperature alarm or power failure, and the switch has halted (except during a single rotor failure in a fan module). Switch off power to the switch and unplug the power cords. Correct any voltage or site temperature issues, and allow the switch to cool down. Power on the switch, and monitor the power supply and fan LEDs to determine where the error is occurring.
		Blinking	Indicates the presence of a major and a minor alarm.
	Yellow	On steadily	A minor alarm has occurred, such as a software error. Switch off power to the switch and unplug the power cords. Power on the switch, and monitor the status LEDs to ensure that Junos OS Evolved boots up properly.
	Red+Yellow	Blinking	Indicates the presence of a major and a minor alarm.
MST	Green	On steadily	The RCB is the primary.
	Dark	Unlit	The RCB is offline.
SSD0	Green	On steadily	The drive is detected.
	Green	Blinking	The drive is active.
SSD1	Green	On steadily	The drive is detected.
	Green	Blinking	The drive is active.