Arista 7280CR2x-30 Quick Start Guide

Quick Start Guide

7280CR2x-30 Series 1 RU

Data Center Switches

Arista Networks

www.arista.com

DOC-00136-04

Headquarters

5453 Great America Parkway
Santa Clara, CA 95054
USA

[phone]

www.arista.com

© Copyright 2020 Arista Networks, Inc. The information contained herein is subject to change without notice. Arista Networks
and the Arista logo are trademarks of Arista Networks, Inc in the United States and other countries. Other product or service
names may be trademarks or service marks of others.

ii Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches

Support

[phone]
[phone]

[e-mail]

Sales

[phone]
[phone]

[e-mail]

Table of Contents

Chapter 1 Overview.............................................................................................................1

1.1 Scope...................................................................................................................................................... 1

1.2 Receiving and Inspecting the Equipment ............................................................................................... 1

1.3 Installation Process................................................................................................................................. 1

1.4 Safety Information................................................................................................................................... 2

1.5 Obtaining Technical Assistance.............................................................................................................. 2

1.6 Specifications.......................................................................................................................................... 3

Chapter 2 Preparation.........................................................................................................5

2.1 Site Selection.......................................................................................................................................... 5

2.2 Tools and Parts Required for Installation................................................................................................ 6

2.3 Electrostatic Discharge (ESD) Precautions ............................................................................................ 7

Chapter 3 Rack Mounting the Switch ................................................................................9

3.1 Two-Post Rack Mount ............................................................................................................................ 9

3.1.1 Attaching Mounting Brackets to the Chassis ........................................................................... 10

3.1.2 Inserting the Switch into the Rack............................................................................................ 11

3.2 Four-Post Rack Mount .......................................................................................................................... 11

3.2.1 Attaching Mounting Brackets to the Chassis ........................................................................... 12

3.2.2 Assembling the Rails onto the Equipment Rack ...................................................................... 13

3.2.3 Attaching the Switch to the Rack ............................................................................................. 14

Chapter 4 Cabling the Switch...........................................................................................17

4.1 Grounding the Switch ........................................................................................................................... 17

4.2 Connecting Power Cables .................................................................................................................... 17

4.2.1 AC Power Supplies .................................................................................................................. 18

4.2.2 DC Power Supplies.................................................................................................................. 19

4.3 Connecting Serial and Management Cables ........................................................................................ 22

Chapter 5 Configuring the Switch ...................................................................................25

Appendix A Status Indicators ...........................................................................................27

A.1 Front Indicators..................................................................................................................................... 27

A.1.1 Switch Indicators...................................................................................................................... 27

A.1.2 Port Indicators.......................................................................................................................... 28

A.2 Rear Status Indicators .......................................................................................................................... 29

Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches iii

Appendix B Parts List........................................................................................................31

B.1 Rack Mount Parts ................................................................................................................................. 31

B.1.1 Four-Post Rack Mount Parts.................................................................................................... 31

B.1.2 Two-Post Rack Mount Parts .................................................................................................... 32

B.2 Cables................................................................................................................................................... 33

Appendix C Front Panel ....................................................................................................35

Appendix D Rear Panel .....................................................................................................37

Appendix E Maintenance and Field Replacement ..........................................................39

E.1 Considerations...................................................................................................................................... 39

E.2 Power Supplies ..................................................................................................................................... 39

E.2.1 Removing a Power Supply....................................................................................................... 39

E.2.2 Installing a Power Supply......................................................................................................... 40

E.3 Fan Modules ......................................................................................................................................... 41

E.3.1 Removing a Fan Module.......................................................................................................... 41

E.3.2 Installing a Fan Module............................................................................................................ 42

Appendix F Regulatory Model Numbers .........................................................................43

Appendix G Taiwan RoHS Information ............................................................................45

iv Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches

Overview

1.1 Scope

This guide is intended for properly trained service personnel and technicians who need to install the
following Arista Networks Data Center Switches:

DCS-7280CR2A-30
DCS-7280CR2K-30
DCS-7280CR2M-30

Chapter 1

Important! Only qualified personnel should install, service, or replace this equipment.

Seul le personnel qualifié doit installer, service, ou remplacer cet équipement.

1.2 Receiving and Inspecting the Equipment

Upon receiving the switch, inspect the shipping boxes and record any external damage. Retain packing
materials if you suspect that part of the shipment is damaged; the carrier may need to inspect them.

If the boxes were not damaged in transit, unpack them carefully. Ensure that you do not discard any
accessories that may be packaged in the same box as the main unit.

Inspect the packing list and confirm that you received all listed items. Compare the packing list with
your purchase order. Appendix B provides a list of components included with the switch.

1.3 Installation Process

The following tasks are required to install and use the switch:

Step 1 Select and prepare the installation site (Section 2.1).
Step 2 Assemble the installation tools listed (Section 2.2).
Step 3 Attach the mounting brackets and install the switch in an equipment rack (Chapter 3).
Step 4 Connect the switch to the power source and network devices (Chapter 4).
Step 5 Configure the switch (Chapter 5).

Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches 1

Safety Information Chapter 1: Overview

Important! Class 1 Laser Product: This product has provisions to install Class 1 laser transceivers which provide

optical coupling to the communication network. Once a Class 1 laser product is installed, the
equipment is a Class 1 Laser Product (Appareil à Laser de Classe 1). The customer is responsible for
selecting and installing the Class 1 laser transceiver and for insuring that the Class 1 AEL (Allowable
Emission Limit) per EN/IEC 60825, CSA E60825-1, and Code of Federal Regulations 21 CFR 1040 is
not exceeded after the laser transceiver have been installed. Do not install laser products whose class
rating is greater than 1. Refer to all safety instructions that accompanied the transceiver prior to
installation. Only Class 1 laser devices, certified for use in the country of installation by the cognizant
agency are to be utilized in this product.

Produit Laser de classe 1: Ce produit a des dispositions pour installer des émetteurs-récepteurs de
laser de classe 1 qui offre de couplage au réseau de communication optique.Une fois un produit laser
de classe 1 est installé, l'équipement est un produit Laser de classe 1 (Appareil à Laser de Classe 1).Le
client est responsable pour sélectionner et installer l'émetteur/récepteur de laser de classe 1 et pour
assurer que la classe 1 AEL (limite d'émission admissible) par EN/IEC 6-825, CSA E60825-1, et Code
des règlements fédéraux 21 CFR 1040 ne soit pas dépassée après avoir installé l'émetteur/récepteur
de laser. Ne pas installer des appareils à laser dont la cote de classe est supérieure à 1.Voir toutes les
consignes de sécurité qui ont accompagné l'émetteur-récepteur avant l'installation. Seuls appareils
laser de classe 1 certifiés pour une utilisation dans le pays d’installation par l’organisme compétent
doivent être utilisées dans ce produit.Ultimate disposal of this product should be in accordance with all
applicable laws and regulations.

Important! Ultimate disposal of this product should be handled in accordance with all national laws and

regulations.

Aucune pièce réparable par l'utilisateur à l'intérieur. Confiez toute réparation à un technicien qualifié.

1.4 Safety Information

Refer to the Arista Networks document Safety Information and Translated Safety Warnings available at:

https://www.arista.com/en/support/product-documentation

1.5 Obtaining Technical Assistance

Any customer, partner, reseller or distributor holding a valid Arista Service Contract can obtain
technical support in any of the following ways:

• Email: [e-mail]. This is the easiest way to create a new service request.
Include a detailed description of the problem and the output of “show tech-support”.

• Web: https://www.arista.com/en/support
A support case may be created through the support portal on our website. You may also download

the most current software and documentation, as well as view FAQs, Knowledge Base articles,
Security Advisories, and Field Notices.

• Phone: [phone] or [phone].

.

Important! No user serviceable parts inside. Refer all servicing to qualified service personnel.

Aucune pièce réparable par l'utilisateur à l'intérieur. Confiez toute réparation à un technicien qualifié.

2 Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches

Chapter 1: Overview Specifications

1.6 Specifications

Table 1-1 Switch Specifications (Dimensions and Weights)

Switch Size (W x H x D) Weight

DCS-7280CR2A-30 48.3 x 4.4 x 67.1 cm (19 x 1.75 x 26.4 inches) 15.5 kg (34.2 lbs.)

DCS-7280CR2K-30 48.3 x 4.4 x 67.1 cm (19 x 1.75 x 26.4 inches) 15.5 kg (34.2 lbs.)

DCS-7280CR2M-30 48.3 x 4.4 x 67.1 cm (19 x 1.75 x 26.4 inches) 15.5 kg (34.2 lbs.)

Table 1-2 Switch Specifications (Operational and Storage)

Operating

Switch

All 0° to 40°C

Table 1-3 Switch Specifications (Power Supply Units)

Power Source PSU Models Ratings

Power Input (AC Power) PWR-1600AC 100 to 240 VAC, 12.9 to 9.5 A, 50/60 Hz

Power Input (DC Power) PWR-1611-DC -48 to -60 VDC, 39 A

1. AC PSUs could be rated for lower maximum power at lower line voltage.

2. The AC PSU fans will not be operational if the power cord is not connected.

Temperature

(32° to 104°F)

Storage
Temperature

-25° to 70°C
(-13° to 158°F)

Operating
Altitude

0 to 3,000 meters
(0 to 10,000 feet)

1

Relative
Humidity

5 to 90%
(non-condensing)

Note A power supply unit could be used in multiple Arista switches. For power consumed by a specific model

or configuration, refer to the relevant power draw specification or contact your Arista representative.

Table 1-4 Switch Specifications (Power Draw)

Switch Power Draw (Typical / Maximum) Supported Power Supply

DCS-7280CR2A-30 563 W / 628 W PWR-1600AC, PWR-1611-DC

DCS-7280CR2K-30 563 W / 628 W PWR-1600AC, PWR-1611-DC

DCS-7280CR2M-30 1300 W / 1400 W PWR-1600AC, PWR-1611-DC

Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches 3

Specifications Chapter 1: Overview

4 Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches

Chapter 2

Preparation

2.1 Site Selection

The following criteria should be considered when selecting a site to install the switch:

• Temperature and Ventilation: For proper ventilation, install the switch where there is ample
airflow to the front and back of the switch. The ambient temperature should not go below 0° or
exceed 40°C.

Important! To prevent the switch from overheating, do not operate it in an area where the ambient temperature

exceeds 40°C (104°F).

Pour empêcher l’interrupteur de surchauffe, ne pas utiliser il dans une zone où la température ambiante
est supérieure à 40°C (104°F).

• Airflow Orientation: The power supply module supports forward airflow and so does the fan
module. Figure 2-1 on page 6 displays fan and power supply module locations on the rear panel.
Base the switch orientation on the airflow direction of the modules to assure the air inlet is always
oriented toward the cool aisle:

• Air Exit modules: orient the rear panel toward the hot aisle.
If the airflow direction is not compatible with the installation site, contact your sales representative.

• Rack Space: Install the switch in a 19" rack or cabinet. The switch height is 1 RU. The accessory
kit provides mounting brackets for two-post and four-post racks.

When mounting the switch in a partially filled rack, load the rack from bottom to top, with the
heaviest equipment at the bottom. Load the switch at the bottom if it is the only item in the rack.

• Power Requirements: Power requirements vary by switch and power supply model. Refer to

Table 1-3 on page 3 and Table 1-4 on page 3 for information regarding your specific system.

Two circuits provide redundancy protection. Section 4.1 describes power cable requirements.

Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches 5

Tools and Parts Required for Installation Chapter 2: Preparation

Figure 2-1: Airflow Direction Labels

1 Power Supply Module 1 4 Fan Module 2 7 Fan Module 5
2 Management Ports 5 Fan Module 3 8 Ground
3 Fan Module 1 6 Fan Module 4 9 Power Supply Module 2

Note Fan module handle color and power supply module label indicate airflow direction.

Important! The power input plug-socket combination must be accessible at all times; it provides the primary

method of disconnecting power from the system.

La combinaison de la puissance-prise d’entrée doit être accessible en tout temps ; Il fournit le principal
moyen de coupure d’alimentation du système.

• Other Requirements: Select a site where liquids or objects cannot fall onto the equipment and
foreign objects are not drawn into the ventilation holes. Verify these guidelines are met:

• Clearance areas to the front and rear panels allow for unrestricted cabling.

• All front and rear panel indicators can be easily read.

• Power cords can reach from the power outlet to the connector on the rear panel.

Important! All power connections must be removed to de-energize the unit.

Toutes les connexions d’alimentation doivent être enlevées pour hors tension l’appareil.

2.2 Tools and Parts Required for Installation

Each switch provides an accessory kit that contains parts that are required to install the switch. In
addition to the accessory kit, the following tools and equipment are required to install the switch:

Two-Post Rack

• Screws or rack mounting nuts and bolts.

• Screwdriver

Four-Post Rack (Tool-less)

No additional equipment required.

Four-Post Rack (Conventional)

• Screws or rack mounting nuts and bolts.

• Screwdriver

6 Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches

Chapter 2: Preparation Electrostatic Discharge (ESD) Precautions

Accessory kit does not include screws for attaching the switch to the equipment rack. When installing
the switch into an equipment rack with unthreaded post holes, nuts are also required to secure the
switch to the rack posts.

2.3 Electrostatic Discharge (ESD) Precautions

Observe these guidelines to avoid ESD damage when installing or servicing the switch.

• Assemble or disassemble equipment only in a static-free work area.

• Use a conductive work surface (such as an anti-static mat) to dissipate static charge.

• Wear a conductive wrist strap to dissipate static charge accumulation.

• Minimize handling of assemblies and components.

• Keep replacement parts in their original static-free packaging.

• Remove all plastic, foam, vinyl, paper, and other static-generating materials from the work area.

• Use tools that do not create ESD.

Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches 7

Electrostatic Discharge (ESD) Precautions Chapter 2: Preparation

8 Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches

Chapter 3

Rack Mounting the Switch

Important! The rack mounting procedure is identical for all switches covered by this guide. Illustrations in this

chapter depict the mounting of a representative switch.

Les procédure de montage du bâti est identique pour tous les commutateurs visés par ce guide.
Illustrations dans ce chapitre montrent le montage d’un interrupteur de DCS-7050QX-32 S.

• Section 3.1 provides instructions for mounting the switch in a two-post rack.

• Section 3.2 provides instructions for mounting the switch in a four-post rack.

After completing the instructions for your rack type, proceed to Chapter 4.

Note The switch must be installed from the front of the rack for both the two-post and four-post installations.

3.1 Two-Post Rack Mount

To mount the switch onto a two-post rack, assemble the mounting brackets to the chassis, then attach
the brackets to the rack posts. Two-post accessory kits include the following two-post mounting parts:

• 2 three-hole mounting brackets

Each chassis side has attachment pins that align with bracket holes. Pin orientation is symmetric and
equidistant, supporting bracket placements where the flange is flush with the front switch panel, flush
with the rear panel, or not flush with either panel. Each bracket hole includes a key-opening for placing
the bracket flush with the chassis and then locking it into place.

Important! Attachment pins must engage all three upper bracket holes.

Goupilles de fixation doivent être bloquer tous les trois trous de la bride supérieure.

Figure 3-1 on page 10 displays proper bracket mount configuration examples. Figure 3-2 on page 10

displays improper bracket mount configuration examples.

Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches 9

Two-Post Rack Mount Chapter 3: Rack Mounting the Switch

3.1.1 Attaching Mounting Brackets to the Chassis

This procedure attaches mounting brackets to the switch chassis (Figure 3-3).

Step 1 Align the mounting brackets with the attachment pins to obtain the desired mounting position.
Step 2 Place the bracket flush on the chassis with attachment pins protruding through key-openings.

Figure 3-1: Bracket Mount Examples for Two-Post Rack Mount

Figure 3-2: Improper Bracket Mount Examples for Two-Post Rack Mount

Step 3 Slide the bracket toward the front flange until the bracket clip locks with an audible click.

Figure 3-3: Attaching the Mounting Brackets to the Switch Chassis

1 Step 1 4 Bracket clip (attached)
2 Step 2 5 Bracket clip (aligned)
3Step 3

10 Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches

Chapter 3: Rack Mounting the Switch Four-Post Rack Mount

To remove the mounting bracket from the chassis, lift the front edge of the mounting bracket clip

with a flathead screwdriver and slide the bracket away from the front flange (opposite from the
installation direction).

3.1.2 Inserting the Switch into the Rack

This procedure attaches the switch to the rack (Figure 3-4).

Step 1 Lift the chassis into the rack. Position the flanges against the rack posts.
Step 2 Select mounting screws that fit your equipment rack.
Step 3 Attach the bracket flanges to the rack posts.

Figure 3-4: Inserting the Switch into the Rack

After completing the two-post rack mount, proceed to Chapter 4.

3.2 Four-Post Rack Mount

The switch is mounted onto a four-post rack by assembling two rails onto the rear posts, sliding the
switch onto the rails, then securing the switch to the front posts.

The installation kit provides the following four-post mounting parts:

• 2 six-hole mounting brackets

• 2 rail-rods

• 2 rail-slides
The rail-rods and rail-slides assemble into two identical slide-rails.

Each chassis side has attachment pins that align with bracket holes. Pin orientation is symmetric and
equidistant, supporting bracket placements where the flange is flush with the front switch panel, flush
with the rear panel, or not flush with either panel. Each bracket hole includes a key-opening for placing
the bracket flush with the chassis and then locking it into place.

Important! Attachment pins must engage at least five of the six bracket holes.

Goupilles de fixation doivent être lock au moins cinq des trous du six support.

Figure 3-5 displays proper bracket mount configuration examples. Figure 3-6 displays an improper

bracket mount configuration example.

Quick Start Guide: 7280CR2x-30 Series 1 RU Data Center Switches 11