Before you begin, refer to the Arista Networks document Compliance and Safety Guide available at: https://www.arista.com/en/support/product-documentation.

Table 2 shows the minimum number of operating power supplies that must be connected to active circuits for each switch to operate.

Each power supply includes a fan that maintains proper power supply temperature. The appendices display the location of components for all switches described in this guide.

Figure 1 and Figure 2 display the location of the chassis grounding locations on the front panel of the switches. Chassis ground locations are also located on the rear panel of the switch chassis (Rear Panel). After mounting the switch into the rack, connect at least one of the chassis grounds to the data center ground using two-hole ground lugs with 16 mm (5/8 in.) spacing, and two M4 x 0.7 screws. After the switch is grounded, ESD wrist straps can be grounded by connecting them to one of the attach points.

To power down the switch,remove all power cords from the power inlets.

The switches use PWR-3351-AC-RED (Figure 3) AC power supplies. Power cables are included with the accessory kit (Table 1). To power the switch, connect the cables to the C20 connectors on the PSU inputs, and insert the other side of the cables into the main power providing circuit(s).

Rear Panel displays the rear panel location of the power supplies.

Table 1 shows the power supply specifications for each of the PSUs supported.

Table 2 shows the power supply configurations for the modular switches.

Most installations will have redundant, dual, independent power feeds. Each independent power feed will be referenced as A and B.

The recommended installation is to wire each supply to independent power feed (A or B).

Each power supply includes a fan that maintains proper power supply temperature. The following appendices display the location of the following component on all switches described in this guide.

Front Panel displays the front panel location of the supervisor modules and line cards.

Rear Panel displays the rear panel location of switch card modules (not visible), fans, and PSUs.

Supervisor modules contain console, management, and USB ports. Figure 4 display port and status LED locations on the supervisors. Refer to the chassis specification in Connecting Supervisor Cables for additional information about the serial port.

• Console (Serial) Port: Connect to a PC with RJ-45 to DB-9 serial adapter cable. Default switch settings include:
  • 9600 baud
  • No flow control
  • 1 stop bit
  • No parity bits
  • 8 data bits

  The supervisor cards must be installed in one of the two slots designated for them. They are shown in Front Panel for the switches.

  Table 3. RJ-45 tp DB-9 Connections

  RJ-45		DB-9			RJ-45		DB-9
  RTS	1	8	CTS		GND	5	5	GND
  DTR	2	6	DSR		RXD	6	3	TXD
  TXD	3	2	RXD		DSR	7	4	DTR
  GND	4	5	GND		CTS	8	7	RTS

   

• Ethernet management port: Connect to 10/100/1000 management network with RJ-45 cable.
• USB Port: May be used for software or configuration updates.
• Uplink Port: Use the relevant optics for connection.

Install required SFP, SFP+, QSFP+, QSFP100, OSFP, and QSFP-DD optic modules in linecard module ports Figure 6.

Connect cables as required to linecard module ports. Supervisor and linecard module ejectors on the front of the chassis assist with cable management.