Arista 7020SR-32C2 Series User manual

Quick Start Guide
7020SR-32C2 Series 1 RU (Gen 3)
Data Center Switches
Arista Networks
www.arista.com
DOC-00152-02

ii Quick Start Guide: 7020SR-32C2 Series 1 RU-Gen 3 Data Center Switches
© Copyright 2022 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.
Headquarters
5453 Great America Parkway
Santa Clara, CA 95054
USA
[phone]
www.arista.com
Support
[phone]
[phone]
[email protected]
Sales
[phone]
[phone]
[email protected]

Contents
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............................................................................... 7
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............................................................9
3.1.2 Inserting the Switch into the Rack..........................................................................10
3.2 Four-Post Rack Mount..........................................................................................................10
3.2.1 Attaching Mounting Brackets to the Chassis.......................................................... 10
3.2.2 Assembling the Rails onto the Equipment Rack.....................................................11
3.2.3 Attaching the Switch to the Rack........................................................................... 13
Chapter 4: Cabling the Switch.............................................................15
4.1 Grounding the Switch........................................................................................................... 15
4.2 Connecting Power Cables.................................................................................................... 15
4.2.1 AC Power Supplies................................................................................................. 16
4.2.2 DC Power Supplies.................................................................................................17
4.3 Connecting Serial and Management Cables........................................................................19
Chapter 5: Configuring the Switch......................................................21
Appendix A: Status Indicator LEDs.....................................................23
A.1 System-Level Status Indicator LEDs....................................................................................23
A.1.1 System Status Indicator LED................................................................................. 23
A.1.2 Fan Status Indicator LED....................................................................................... 24
A.1.3 Port Status Indicator LEDs.....................................................................................24
A.2 Component Status Indicators...............................................................................................25
A.2.1 Fan Module Status LED......................................................................................... 25
A.2.2 PSU Module Status LED........................................................................................26
Appendix B: Parts List..........................................................................27
B.1 Rack Mount Parts.................................................................................................................27
B.1.1 Four-Post Rack Mount Parts.................................................................................. 27
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B.1.2 Two-Post Rack Mount Parts................................................................................... 28
B.2 Cables...................................................................................................................................28
Appendix C: Front Panel...................................................................... 29
Appendix D: Rear Panel....................................................................... 31
Appendix E: Maintenance and Field Replacement............................ 33
E.1 Considerations......................................................................................................................33
E.2 Power Supplies.....................................................................................................................33
E.2.1 Removing a Power Supply..................................................................................... 33
E.2.2 Installing a Power Supply.......................................................................................33
E.3 Fan Modules.........................................................................................................................34
E.3.1 Removing a Fan Module........................................................................................ 34
E.3.2 Installing a Fan Module.......................................................................................... 34
Appendix F: Regulatory Model Numbers............................................35
Appendix G: Taiwan RoHS Information..............................................37
iv

Chapter 1
Overview
The following topics are covered in the section:
•Scope
•Receiving and Inspecting the Equipment
•Installation Process
•Safety Information
•Obtaining Technical Assistance
•Specifications
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-7020SR-32C2
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. Parts List provides a list of components included with the switch.
1.3 Installation Process
The following tasks are required to install and use the switch:
1. Select and prepare the installation site (Site Selection ).
2. Assemble the installation tools listed (Tools and Parts Required for Installation).
3. Attach the mounting brackets and install the switch in an equipment rack (Rack Mounting the
Switch).
4. Connect the switch to the power source and network devices (Cabling the Switch).
5. Configure the switch (Configuring the Switch ).
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. The customer is responsible for
selecting and installing the Class 1 laser transceiver and for insuring that the Class 1
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.
Important:
Ultimate disposal of this product should be handled in accordance with all national laws and
regulations.
L'élimination finale de ce produit doit être effectuée conformément à toutes les lois
nationales etrèglements.
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: suppor[email protected]. 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

Overview
1.6 Specifications
Table 1: Switch Specifications (Dimensions and Weights)
Switch Size (W x H x D) Weight
DCS-7020SR-32C2 48.3 x 4.4 x 34.7 cm (19 x
1.75 x 13.6 inches)
6.4 kg (14.4 lbs.)
Table 2: Switch Specifications (Operational and Storage)
Switch Operating
Temperature Storage Temperature Operating Altitude Relative Humidity
All 0° to 40°C
(32° to 104°F)
-25° to 70°C
(-13° to 158°F)
0 to 3,000 meters
(0 to 10,000 feet)
5 to 90% (non-
condensing)
Table 3: Switch Specifications (Power Input)
Power Source PSU Models Ratings
Power Input (AC Power) PWR-400AC 100 - 240 VAC, 4.5 A (max), 50/60 Hz
Table 4: Switch Specifications (Power Input)
Power Source PSU Models Ratings
Power Input (DC Power) PWR-400-DC 24 VDC / 16 A, 48 VDC / 11 A, 60
VDC / 9 A
Note: All PSU models are not supported by all switches. Some switches described in this
guide could use power supplies that may no longer be available. Contact your local Arista
representative for more information.
Table 5: Switch Specifications (Power Draw)
Switch Power Draw (Typical /
Maximum) Supported Power Supply
DCS-7020SR-32C2 160 W / 189 W PWR-400AC, PWR-400-DC
3

4

Chapter 2
Preparation
The following topics are covered in this section:
•Site Selection
•Tools and Parts Required for Installation
•Electrostatic Discharge (ESD) Precautions
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: Determine airflow direction of the fan modules on the rear panel and the
power supply modules on the front panel. Fan and power supply module handles indicate airflow
direction:
•Blue Handle: Air Inlet module
•Red Handle: Air Exit module
Airflow Direction displays fan and power supply module locations on the device. 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.
•Air Inlet modules: orient the rear panel toward the cool aisle.
If the airflow direction is not compatible with the installation site, contact your sales representative to
obtain modules that circulate air in the opposite direction.
•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 4: Switch Specifications (Power Input) and Table 5: Switch Specifications (Power Draw) for
information regarding your specific system.
5

Two circuits provide redundancy protection. Cabling the Switch describes power cable requirements.
Figure 1: Airflow Direction
1 Ground Lug 6 ESD
2 Blue Handles indicates forward airflow 7 Console (Serial) Port
3 Ethernet Management Port 8 USB Port
4 System Status LED 9 Power Supply 2 Status LED
5 Fan Status LED 10 Power Supply 1 Status LED
1 Fan Module 1 Handle 4 Fan Module 3 Status LED
2 Fan Module 3 Handle 5 Fan Module 1 Status LED
3 Ground
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.
6

Preparation
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
Note: For DCS-7020SR-32C2, four-post rack kits are optional and sold separately.
Four-Post Rack (Tool-less)
No additional equipment required.
Four-Post Rack (Conventional)
• Screws or rack mounting nuts and bolts.
• Screwdriver
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.
7

8

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 DCS-7020SR-32C2 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-7020SR-32C2.
•Two-Post Rack Mount provides instructions for mounting all switches in a two-post rack.
•Four-Post Rack Mount provides instructions for mounting all switches in a four-post rack.
After completing the instructions for your rack type, proceed to Cabling the Switch.
3.1 Two-Post Rack Mount
To mount the switch onto a two-post rack, attach the mounting ears to the chassis, then attach the ears
to the rack posts. Two-post accessory kit includes 2x mounting ears as two-post mounting parts.
Important:
Attachment pins must engage all three upper bracket holes.
Goupilles de fixation doivent être bloquer tous les trois trous de la bride supérieure.
3.1.1 Attaching Mounting Brackets to the Chassis
This procedure attaches mounting brackets to the switch chassis as depicted by Figure 2: Attaching
Mounting Brackets to the Switch Chassis .
1. Align the mounting brackets with the sides of the chassis.
2. Use the screws to attach the brackets to the chassis.
Figure 2: Attaching Mounting Brackets to the Switch Chassis
Note: DCS-7020SR-32C2 supports front mount only.
9

3.1.2 Inserting the Switch into the Rack
This procedure attaches the switch to the rack (Figure 3-2).
1. Lift the chassis into the rack. Position the mounting ears against the rack posts.
Note: The mounting ears should be at the same height to ensure that the device is level.
2. Select mounting screws that fit your equipment rack.
3. Attach the mounting ears to the rack posts.
Figure 3: Inserting the Switch into the Rack
After completing the two-post rack mount, proceed to Cabling the Switch.
3.2 Four-Post Rack Mount
Note: For DCS-7020SR-32C2, four-post rack kits are optional and sold separately.
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:
• 2x mounting brackets
• 2x rail-rods
• 2x rail-slides
The rail-rods and rail-slides assemble into two identical slide-rails.
3.2.1 Attaching Mounting Brackets to the Chassis
This procedure attaches mounting brackets to the switch chassis as depicted by Figure 2: Attaching
Mounting Brackets to the Switch Chassis .
1. Align the mounting brackets with the sides of the chassis.
10

Rack Mounting the Switch
2. Use the screws to attach the brackets to the chassis.
Figure 4: Attaching Mounting Brackets to the Switch Chassis
3.2.2 Assembling the Rails onto the Equipment Rack
Rail-rods and rail-slides assemble into two identical rails. Each rail connects a front post to a rear post.
When the rails are installed, the switch slides on the rails into the rack. Each bracket includes a screw
that attaches the switch to the rail.
Each end of an assembled rail contains two rack plugs (Figure 5: Attaching the Mounting Brackets
to the Switch Chassis). The rails are installed into a rack by inserting the plugs into rack slots. When
installing rails into posts with threaded or rounded holes, remove all plugs located on both sides of the
assembled rails, then install the rails with bolts that fit the rack.
Figure 5: Attaching the Mounting Brackets to the Switch Chassis
This procedure attaches the rails to a four post rack:
1. Slide a rail-rod into a rail-slide (Figure 6: Assembling the Rails) until the rail clip makes an audible
click.
11

Note: The rail clip prevents the extension of the rail beyond the maximum supported
distance between the front and rear rack posts.
Figure 6: Assembling the Rails
1 Rail Slide 3 Rail (assembled)
2 Rail Rod A Rack Plugs
2. Attach rail to the right rear rack post by inserting rod-end rack plugs into post slots (Figure 7:
Attaching the Rails ). The slide assembly must be inside the right posts, relative to the left rack
posts.
Note: If the rack plugs were previously removed, use bolts to attach the rail to the rack.
3. Attach the slide end of the rail to the front post by extending the rail end past the post, then
contracting the rail while guiding the rack plugs into the post (Figure 7: Attaching the Rails ).
4. Repeat Step 1 through Step 3 for the left posts. Ensure the rails are on the same horizontal level.
Figure 7: Attaching the Rails
12

Rack Mounting the Switch
3.2.3 Attaching the Switch to the Rack
After the rails are installed, the switch slides on the rails into the rack. Each bracket includes a thumb
screw that attaches the switch to the rail.
1. Lift the switch into the rack and insert the mounting brackets into the slide rails (Figure 8: Inserting
the Switch onto the Rails).
Figure 8: Inserting the Switch onto the Rails
2. Slide the switch on the rails, toward the rear posts, until the mounting bracket flanges are flush with
the rail flanges attached to the rack posts.
3. Attach the bracket flanges to the rack post using the quick-release thumb screws supplied with the
brackets (Figure 9: Attaching the Switch to the Rack Posts ).
Figure 9: Attaching the Switch to the Rack Posts
After completing the four-post rack mount, proceed to Cabling the Switch.
13

14

Chapter 4
Cabling the Switch
The following topics are covered in this section:
•Grounding the Switch
•Connecting Power Cables
•Connecting Serial and Management Cables
4.1 Grounding the Switch
After mounting the switch into the rack, connect the switch to the data center ground. Figure 4-1
displays the location of the grounding lug on the front, left mounting ear for the DCS-7020SR-32C2
Important:
Grounding wires and grounding lugs (M4 x 0.7) are not supplied. Wire size should meet local
and national installation requirements. Commercially available 6 AWG wire is recommended for
installations in the U.S.
À la terre et de mise à la terre fils cosses (M4 x 0.7) ne sont pas fournis. Calibre des fils doit
satisfaire des exigences de l’installation locale et nationale. Disponible dans le commerce 6 fils
AWG est recommandé pour les installations aux États-Unis.
Figure 10: Earth Grounding Pad Sockets for DCS-7020SR-32C2
1 Ground lug 6 ESD
2 Blue handle indicates forward airflow 7 Console (Serial) port
3 Ethernet management port 8 USB port
4 System status LED 9 Power supply 2 status LED
5 Fan status LED 10 Power supply 1 status LED
4.2 Connecting Power Cables
Important:
Installation of this equipment must comply with local and national electrical codes. If necessary,
consult with the appropriate regulatory agencies and inspection authorities to ensure
compliance.
15

Installation de cet équipement doit être conformes aux codes électriques locaux et nationaux.
Si nécessaire, consulter les organismes de réglementation appropriés et des autorités de
contrôle pour assurer la conformité.
The switch operates with two installed power supplies. At least one power supply must connect to a
power source. Two circuits provide redundancy protection.
Important:
Read all installation instructions before connecting the system to the power source.
Lire toutes les instructions d’installation avant de brancher le système à la source
d’alimentation.
•Non-Redundant Configuration: Connect power to either of the two power supplies.
•Redundant Power Supply Configuration: Connect power to both power supplies.
•Power down the Switch: Remove all power cords and wires from the power supplies.
Important:
This equipment must be grounded. Never defeat the ground conductor.
Cet équipement doit être mis à la terre. Ne jamais modifier le conducteur de terre.
Important:
This unit requires overcurrent protection.
Cet appareil requiert une protection contre les surintensités.
4.2.1 AC Power Supplies
The PWR-400AC power supply is supported.
Figure 11: AC Power Supply (PWR-400AC) displays an AC power supply. It connects to a circuit that
provides the required power, as specified by Table 5: Switch Specifications (Power Draw).
Figure 11: AC Power Supply (PWR-400AC)
1 Power Supply Handle 3 Power Supply Status LED
2 Power Supply Release Lever
The power supply requires power cables that comply with IEC-320 and have a C13 plug. The
accessory kit provides two IEC-320 C13 to C14 power cables.
Important:
Apply ground connection to the switch first during installation and remove last when removing
power.
Appliquer connexion à la terre à l'interrupteur premier lors de l'installation et de supprimer la
dernière alimentation lors du débranchement.
16