7280-1RU-GEN3

7280-1RU-GEN3 ARISTA | Alldatasheet

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 58

Technical content

Datasheet sections

• 1.1 Scope
• 1.2 Receiving and Inspecting the Equipment
• 1.3 Installation Process
• 1.4 Safety Information
• 1.5 Obtaining Technical Assistance
• 1.6 Specifications
• 2.1 Site Selection
• 2.2 Tools and Parts Required for Installation
• 2.3 Electrostatic Discharge (ESD) Precautions
• 3.1 Two-Post Rack Mount
• 3.1.1 Attaching Mounting Brackets to the Chassis (Two-Post)
• 3.1.2 Inserting the Switch into the Rack (Two-Post)
• 3.2 Four-Post Rack Mount
• 3.2.1 Attaching Mounting Brackets to the Chassis (Four-Post)
• 3.2.2 Assembling the Rails onto the Equipment Rack
• 3.2.3 Attaching the Switch to the Rack
• 4.1 Grounding the Switch
• 4.2 Grounding Adapter Assembly (KIT-GND-EXT-1RU)
• 4.3 Connecting Power Cables
• 4.3.1 AC Power Supplies
• 4.3.2 DC Power Supplies
• 4.4 Connecting Serial and Management Cables

7280 Series 1 RU (Gen 3)

www.arista.com PDOC-00144-05

ii Quick Start Guide: 7280 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 +1 408 547-5500 www.arista.com Support +1 408 547-5502 +1 866 476-0000 support@arista.com Sales +1 408 547-5501 +1 866 497-0000 sales@arista.com

This guide is intended for properly trained service personnel and technicians who need to install selected Arista Networks Data Center Switches. The following topics are covered in this section:

• Scope
• Receiving and Inspecting the Equipment
• Installation Process
• Safety Information
• Obtaining Technical Assistance
• Specifications

1.1 Scope

This guide covers the following devices: DCS-7280SE-64 DCS-7280SE-68 DCS-7280SE-72 DCS-7280QR-C36 DCS-7280TR-48C6 DCS-7280SR2A-48YC6 DCS-7280TRA-48C6 DCS-7280QRA-C36S DCS-7280SRAM-48C6 DCS-7280SR-48C6 DCS-7280SR2-48YC6 DCS-7280SRA-48C6 DCS-7280SR2K-48C6 DCS-7280SRM-40CX2 DCS-7280CR3-32D4 DCS-7280CR3-32P4 DCS-7280DR3-24 DCS-7280PR3-24 DCS-7280SR3-48YC8 DCS-7280SR3K-48YC8 DCS-7280CR3K-32D4 DCS-7280CR3K-32P4 DCS-7280DR3K-24 DCS-7280PR3K-24 DCS-7280CR3-36S DCS-7280CR3K-36S 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

This section discusses the task required to install and use the switch. 1. Select and prepare the installation site (Site Selection).

1. Assemble the installation tools (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 (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. Ultimate disposal of this product should be in accordance with all applicable laws and regulations. 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. 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: support@arista.com. 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: +1 866-476-0000 or +1 408-547-5502.

Note: 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.

1.6 Specifications

List of specifications of Arista data center modular switches and components covered by this guide. Table 1: Switch Specifications (Dimensions and Weights) Switch Size (W x H x D) Weight DCS-7280SE-64 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches) 10.0 kg (22.0 lbs.) DCS-7280SE-68 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches) 10.1 kg (22.3 lbs.) DCS-7280SE-72 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches) 10.2 kg (22.5 lbs.) DCS-7280QR-C36 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches) 9.7 kg (21.4 lbs.) DCS-7280TR-48C6 48.3 x 4.4 x 40.6 cm (19 x 1.75 x 16 inches) 10.1 kg (22.3 lbs.) DCS-7280SR2A-48YC6 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches) 10.4 kg (22.9 lbs.) DCS-7280TRA-48C6 48.3 x 4.4 x 40.6 cm (19 x 1.75 x 16 inches) 10.1 kg (22.3 lbs.) DCS-7280QRA-C36S 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches) 10.7 kg (23.6 lbs.) DCS-7280SRAM-48C6 48.3 x 4.4 x 40.6 cm (19 x 1.75 x 16 inches) 9.0 kg (20.0 lbs.) DCS-7280SR-48C6 48.3 x 4.4 x 40.6 cm (19 x 1.75 x 16 inches) 10.0 kg (22.0 lbs.) DCS-7280SR2-48YC6 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches) 10.4 kg (22.9 lbs.) DCS-7280SRA-48C6 48.3 x 4.4 x 40.6 cm (19 x 1.75 x 16 inches) 8.6 kg (19.0 lbs.) DCS-7280SR2K-48C6 48.3 x 4.4 x 40.6 cm (19 x 1.75 x 16 inches) 9.0 kg (20.0 lbs.) DCS-7280SRM-40CX2 44.0 x 4.4 x 40.2 cm (17.3 x 1.75 x 15.8 inches) 8.7 kg (19.1 lbs.) DCS-7280CR3-32D4 48.3 x 4.4 x 55.8 cm (19 x 1.75 x 22.0 inches) 12.3 kg (27.0 lbs.) DCS-7280CR3-32P4 48.3 x 4.4 x 55.8 cm (19 x 1.75 x 22.0 inches) 12.3 kg (27.0 lbs.)

DCS-7280DR3-24 48.3 x 4.4 x 57.4 cm (19 x 1.75 x 22.6 inches) 13.1 kg (29.0 lbs.) DCS-7280PR3-24 48.3 x 4.4 x 58.2 cm (19 x 1.75 x 23.6 inches) 12.7 kg (28.0 lbs.) DCS-7280SR3-48YC8 48.3 x 4.4 x 46.7 cm (19 x 1.75 x 18.4 inches) 9.2 kg (20.2 lbs.) DCS-7280SR3K-48YC8 48.3 x 4.4 x 46.7 cm (19 x 1.75 x 18.4 inches) 9.2 kg (20.2 lbs.) DCS-7280CR3K-32D4 48.3 x 4.4 x 55.8 cm (19 x 1.75 x 22.0 inches) 12.3 kg (27.0 lbs.) DCS-7280CR3K-32P4 48.3 x 4.4 x 55.8 cm (19 x 1.75 x 22.0 inches) 12.3 kg (27.0 lbs.) DCS-7280DR3K-24 48.3 x 4.4 x 57.4 cm (19 x 1.75 x 22.6 inches) 13.1 kg (29.0 lbs.) DCS-7280PR3K-24 48.3 x 4.4 x 58.2 cm (19 x 1.75 x 23.6 inches) 12.7 kg (28.0 lbs.) DCS-7280CR3-36S 48.3 x 4.4 x 47.2 cm (19 x 1.75 x 18.6 inches) 10.5 kg (23.0 lbs.) DCS-7280CR3K-36S 48.3 x 4.4 x 47.2 cm (19 x 1.75 x 18.6 inches) 10.5 kg (23.0 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 PWR-500AC 100 - 240 VAC, 6.5 to 3.0 A, 50/60 Hz PWR-511-AC 100 - 240 VAC< 7.1 A, 50/60 Hz PWR-745AC 100 - 240 VAC 10.0 to 5.0 A 50/60 Hz PWR-747AC 100 - 240 VAC 10.0 to 5.0 A 50/60 Hz PWR-1011-AC 100 - 120 / 200 - 240 VAC 12 / 6 A 50/60 Hz Power Input (AC Power) PWR-1511-AC 200 - 240 VAC 9.6 A 50/60 Hz

-48 to -60 VDC, 15 A-48 to -60 VDC PWR-1011-DC PWR-1511-DC

13 A -40 to -60 VDC, 30 A -48 to

-60 VDC Power Input (DC Power) PWR-1900-DC 39.5 A -48 to -60 VDC 52 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 4: Switch Specifications (Power Draw) Switch Power Draw (Typical / Maximum) Supported Power Supply DCS-7280SE-64 263 W / 381 W PWR-500AC, PWR-500-DC DCS-7280SE-68 313 W / 405 W PWR-500AC, PWR-500-DC DCS-7280SE-72 262 W / 399 W PWR-500AC, PWR-500-DC DCS-7280QR-C36 324 W / 499 W PWR-745AC, PWR-1900-DC DCS-7280TR-48C6 290 W / 405 W PWR-500AC, PWR-500-DC DCS-7280SR2A-48YC6 450 W / 685 W PWR-747AC, PWR-1900-DC DCS-7280TRA-48C6 290 W / 405 W PWR-500AC, PWR-500-DC DCS-7280QRA-C36S 419 W / 570 W PWR-747AC, PWR-1900-DC DCS-7280SRAM-48C6 355 W / 400 W PWR-500AC, PWR-500-DC DCS-7280SR-48C6 263 W / 381 W PWR-500AC, PWR-500-DC DCS-7280SR2-48YC6 425 W / 647 W PWR-747AC, PWR-1900-DC DCS-7280SRA-48C6 314 W / 410 W PWR-500AC, PWR-500-DC DCS-7280SR2K-48C6 215 W / 370 W PWR-747AC, PWR-1900-DC DCS-7280SRM-40CX2 183 W / 283 W PWR-500AC, PWR-500-DC DCS-7280CR3-32D4 535 W / 851 W PWR-1011-AC, PWR-1011-DC DCS-7280CR3-32P4 535 W / 851 W PWR-1011-AC, PWR-1011-DC DCS-7280DR3-24 560 W / 1110 W PWR-1511-AC, PWR-1511-DC DCS-7280PR3-24 650 W / 1100 W PWR-1511-AC, PWR-1511-DC DCS-7280SR3-48YC8 155 W / 325 W PWR-511-AC, PWR-511-DC DCS-7280SR3K-48YC8 155 W / 325 W PWR-511-AC, PWR-511-DC DCS-7280CR3K-32D4 535 W / 851 W PWR-1011-AC, PWR-1011-DC DCS-7280CR3K-32P4 535 W / 851 W PWR-1011-AC, PWR-1011-DC DCS-7280DR3K-24 560 W / 1110 W PWR-1511-AC, PWR-1511-DC DCS-7280PR3K-24 650 W / 1100 W PWR-1511-AC, PWR-1511-DC

DCS-7280CR3-36S 254 W / 423 W PWR-1011-AC, PWR-1011-DC DCS-7280CR3K-36S 254 W / 423 W PWR-1011-AC, PWR-1011-DC

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: The fans and PSUs determine the airflow direction through the switch. The color of the visible handles or labels indicate the airflow direction. Note: The figures shown use representative Arista switches to illustrate airflow directions. Refer to Rear Panel to determine the airflow for your switch.
• Blue Handle: Air Inlet module. The following figure shows the airflow through the switch with air inlet modules: Figure 1: Air Inlet Module
• Red Handle: Air Exit module. The following figure shows the airflow through the switch with air exit modules:

Figure 2: Air Exit Module Orient the switch such that the airflow through the switch is from the cooler to the hotter aisle. If the airflow direction is not compatible with the installation site, reorient the fan modules to circulate air in the opposite direction. Figure 3: Airflow Direction Labels displays fan and power supply module locations on the rear panel. Their red handles indicate that they are air exit modules. Verify that each module has the same airflow direction. 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. Table 3: Switch Specifications (Power Input) and Table 4: Switch Specifications (Power Draw) provide information regarding your specific system. Two circuits provide redundancy protection. Cabling the Switch describes power cable requirements. Figure 3: Airflow Direction Labels

1 Power supply module 1

5 Fan module 4 9 Fan module 3 status LED

2 Fan module 1 6 Power supply module 2

10 Fan module 2 status LED

3 Fan module 2 7 Fan module handl 11 Fan module 1 status LED

4 Fan module 3 8 Fan module 4 status LED12 PSU 1 status LED

Note: Handle or label color indicates 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 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.

The following topics are covered in this section:

• Two-Post Rack Mount Note: Use the rack-mount parts included with your switch for mounting. For heavier switches, only four-post mount is supported.
• Attaching Mounting Brackets to the Chassis (Two-Post)
• Inserting the Switch into the Rack (Two-Post)
• Four-Post Rack Mount
• Attaching Mounting Brackets to the Chassis (Four-Post)
• Assembling the Rails onto the Equipment Rack
• Attaching the Switch to the Rack Note: Four-post rack mount is recommended for all switches. Use the rack-mount parts included with your switch for mounting. Important: The rack mounting procedure is identical for all switches covered by this guide. Illustrations in this chapter depict the mounting of a DCS-7050QX-32S 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-32S.
• Two-Post Rack Mount provides instructions for mounting the switch in a two-post rack.
• Four-Post Rack Mount provides instructions for mounting the switch 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, 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.

3.1.1 Attaching Mounting Brackets to the Chassis (Two-Post)

The following figure displays the front bracket alignment for attaching the switch into a two-post rack.

Figure 4: Bracket Mount Examples for Two-Post Rack Mount Note: Center mount is recommended, especially for heavier switches. The following figure displays improper bracket mounts for two-post rack mount. Figure 5: Improper Bracket Mount Examples for Two-Post Rack Mount The following procedure attaches the two-post rack mount brackets to the chassis. 1. Align the mounting brackets with the attachment pins to obtain the desired mounting position. 2. Place the bracket flush on the chassis with attachment pins protruding through key-openings. 3. Slide the bracket toward the front flange until the bracket clip locks with an audible click. The following figure shows the correct bracket attachment for a front mount. Figure 6: Attaching the Mounting Brackets to the Switch Chassis

1 Step 1 4 Bracket clip

(attached)

2 Step 2 5 Bracket clip

(aligned)

3 Step 3

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 (Two-Post)

This procedure attaches the switch to the rack. 1. Lift the chassis into the rack. Position the flanges against the rack posts. 2. Select mounting screws that fit your equipment rack. 3. Attach the bracket flanges to the rack posts. Figure 7: Inserting the Switch into the Rack After completing the two-post rack mount, proceed to Cabling the Switch.

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. The following figure displays proper bracket mount configuration examples for four-post mounting. Figure 8: Bracket Mount Examples for Four-Post Rack Mount

The following figure displays an improper bracket mount configuration example. Figure 9: Improper Bracket Mount Example for Four-Post Rack Mount

3.2.1 Attaching Mounting Brackets to the Chassis (Four-Post)

The following figure displays the front bracket alignment for mounting the switch into a four-post rack. Figure 10: Attaching the Mounting Brackets to the Switch Chassis This procedure attaches mounting brackets to the switch chassis as depicted by the preceding figure. 1. Align the mounting brackets with the attachment pins to obtain the desired mounting position. 2. Place the bracket flush on the chassis with attachment pins protruding through key-openings. 3. Slide the bracket toward the front flange until the bracket clip locks with an audible click. 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).

3.2.2 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 11: Attaching the Four-Post 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 11: Attaching the Four-Post Mounting Brackets to the Switch Chassis

1 Step 1 4 Bracket clip (attached)

2 Step 2 5 Bracket clip (aligned)

This procedure attaches the rails to a four post rack: 1. Slide a rail-rod into a rail-slide (Figure 12: Assembling the Rails) until the rail clip makes an audible click. The rail clip prevents the extension of the rail beyond the maximum supported distance between the front and rear rack posts. Figure 12: Assembling the Rails

1 Rail-slide 4 Rail (assembled)

2 Rail-rod

3 Rack plugs

1. Attach rail to the right rear rack post by inserting rod-end rack plugs into post slots (Figure 13: Attaching the Rails). The slide assembly must be inside the right posts, relative to the left rack posts. 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. 4. Repeat Step 1 through Step 3 for the left posts. Ensure the rails are on the same horizontal level.

Figure 13: Attaching the Rails

1 Inset A

2 Inset B

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 14: 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 15: Attaching the Switch to the Rack Posts .

Figure 15: Attaching the Switch to the Rack Posts After completing the four-post rack mount, proceed to Cabling the Switch.

The following topics are covered in this section:

• Grounding the Switch
• Grounding Adapter Assembly (KIT-GND-EXT-1RU)
• Connecting Power Cables
• AC Power Supplies
• DC Power Supplies
• Connecting Serial and Management Cables Note: Arista fixed switches take approximately 5 to 10 minutes to boot completely.

4.1 Grounding the Switch

After mounting the switch into the rack, connect the switch to the data center ground. Figure 16: Earth Grounding Pad Sockets for Models without Management Ports on the Rear Panel displays the location of the grounding pads located on the bottom corners of the rear panel for the models that have no management ports on the rear panel. Figure 17: Earth Grounding Pad Sockets for Models with Management Ports on the Rear Panel displays the location of the grounding pads on the rear panel for models that have management ports on the rear panel. There are threaded holes under the sticker on the right (next to PS2) that warns about “1 min”.Figure 18: Earth Grounding Adapter for DCS-7280CR3-32P4 displays the location of the grounding assembly on the rear panel for DCS-7280CR3-32P4. 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 US. 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 16: Earth Grounding Pad Sockets for Models without Management Ports on the Rear Panel

1 Earth grounding pads

Figure 17: Earth Grounding Pad Sockets for Models with Management Ports on the Rear Panel Figure 18: Earth Grounding Adapter for DCS-7280CR3-32P4

4.2 Grounding Adapter Assembly (KIT-GND-EXT-1RU)

The following steps assemble and attach a grounding assembly to the chassis before mounting it into the rack. The following switches support the external grounding kit. Identify the location for attaching the adapter. As shown in the following example, the attachment point is on the bottom of the chassis in some cases. Table 5: Grounding Kit Adapter Support Switch Grounding Kit Adapter 7280PR3-24 KIT-GND-EXT-1RU 7280PR3K-24 KIT-GND-EXT-1RU 7280DR3-24 KIT-GND-EXT-1RU 7280DR3K-24 KIT-GND-EXT-1RU 7280CR3-32P4 KIT-GND-EXT-1RU 7280CR3K-32P4 KIT-GND-EXT-1RU 7280CR3MK-32P4 KIT-GND-EXT-1RU 7280DR3-32P4 KIT-GND-EXT-1RU 7280DR3K-32P4 KIT-GND-EXT-1RU

Figure 19: Earth Grounding Adapter Assembly for DCS-7280CR3-32P4 shows the exploded and assembled views. Figure 19: Earth Grounding Adapter Assembly for DCS-7280CR3-32P4 1. Identify all the components to be assembled: Note: The chassis is shown upside down in the figure above.

• 1x Grounding adapter
• 1x Grounding bracket
• 2x Flat-head screws (Phillips,M4 x 5.00 long, stainless steel)
• 2x Hex nuts (#10-32, Serrated Flange, stainless steel)
• 1x Grounding lug (Copper, 2-hole, 6 AWG, straight barrel) 2. Insert the grounding adapter through the holes in the grounding bracket. 3. Insert the ground lug on to the grounding adapter studs and fasten using the hex nuts to form the grounding assembly. 4. With the chassis on its top on a flat surface, attach the grounding assembly to the chassis using the flat head screws. 5. Turn the chassis over before mounting it into a rack and connecting cables.

4.3 Connecting Power Cables

Power cords are optional and must be ordered separately. You must use an approved power cord compliant with local and national electrical codes or order one from Arista for use with the device. 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. 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. Rear Panel displays the location of the power supplies on the rear panel of the switch. 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.

4.3.1 AC Power Supplies

The following AC power supplies are supported. PWR-500AC PWR-745AC PWR-1011-AC PWR-511-AC PWR-747AC PWR-1511-AC Figure 20: AC Power Supply Example displays an AC power supply, including the power socket on the left side of the module. The AC power supply connects to a circuit that provides the required power, as specified by Table 4: Switch Specifications (Power Draw) . Note: Several PSUs support both forward and reverse airflow directions. Figure 20: AC Power Supply Example The power supplies require power cables that comply with IEC-320 and have a C14 connector. The accessory kit provides two IEC-320 C13 to C14 power cables.

4.3.2 DC Power Supplies

The following DC power supplies are supported. Note: Several PSUs support both forward and reverse airflow directions. PWR-500-DC PWR-1900-DC PWR-1511-DC PWR-511-DC PWR-1011-DC The following image displays examples of DC power supplies. Figure 21: DC Power Supply Examples

Important: A disconnect device must be provided as part of the installation . Un dispositif de sectionnement doit être fourni dans le cadre de l'installation. Important: Ensure power is removed from DC circuits before performing any installation actions. Locate the disconnect device, circuit breakers or fuses on DC power lines servicing the circuits. Turn off the power line circuits or remove the fuses. Pouvoir assurer qu'il est retiré de circuits DC avant d'effectuer des actions d'installation . Localiser les disjoncteurs ou des fusibles sur les lignes de courant continu desservant les circuits. Coupez les circuits de lignes d'alimentation ou retirer les fusibles. Important: Wire size must comply with local and national requirements and electrical codes. Use only copper wire. Le calibre du fil doit être conforme aux exigences locales et nationales et les codes électriques. Utiliser du fil de cuivre. 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.

4.3.2.1 Wire and Lug Preparation

Before performing any installation actions, ensure power is removed from DC circuits by turning off the power line servicing the circuits. Prepare the stranded wiring before you begin a DC power installation. Note: Stranded copper wiring is required and should meet local and national installation requirements. Wires and grounding lugs are not supplied. 1. Attach an ESD grounding strap. 2. Prepare the stranded copper wiring for the power supply to be used. Table 4: Switch Specifications (Power Draw) provides wiring, lug, and tightening torque information for the power supplies covered in this guide. Table 6: Wiring, Lug, and Tightening Torques for DC PSUs Wire Size(1) Tightening Torque PSU (AWG) (mm 2) Lug Type(2) N•m in.•lbs. PWR-500-DC 14 or larger2.0 or largerring or spade/ fork 1.0 9 PWR-511-DC 12 - 14 4.0 - 2.5 1.0 9 PWR-1900-DC 4 - 6 21.2 - 13.3 2.7 24 PWR-1011-DC 6 - 8 16.0 - 10.0 2.7 24 PWR-1511-DC 4 - 6 25.0 - 16.0 2.7 24 1. Unless otherwise noted, wire size applies to -48V, Battery return, and Protective earth wires. 2. Unless otherwise noted, twin #10 studs spaced for dual-hole lug with 5/8" hole spacing. 3. Strip the wires to the appropriate length for the lugs to be used. 4. Use agency-approved compression (pressure) lugs for wiring terminations. 5. Slip on heat-shrink tubing on the wire ends before assembling the lugs on to the wire. 6. Crimp the lugs with the proper tool, and ensure that the tubing extends over the barrel of the lugs and the insulation on the wires (Lug Preparation).

1. Shrink the tubing with a heat gun. Figure 22: Lug Preparation

1 Insulated wire 3 Lug B 1/2”

2 Heat-shrink tubing A 1/4” C 5/8”

Note: Dimension B is the width of the lug (not visible on the right angle lug).

4.3.2.2 Connecting a DC Power Supply to Power Source

Figure 23: DC PSU Connection Example displays an example of connecting a PSU. To connect a DC power supply to a power source, perform the following: 1. Prepare the stranded wiring (Wire and Lug Preparation). 2. Attach the appropriate lugs to the source DC wires. 3. Connect the DC-input wires to the appropriate terminals using the specified torque (Table 4: Switch Specifications (Power Draw) ) in the following order. Note: Remove terminal covers as needed. a. Ground wire to the Protective Earth (PE ) terminal. b. Negative source DC cable to the negative (- / -48V) terminal. c. Positive (+) source DC cable to the positive (+ / Rtn) terminal. 4. Replace the terminal covers as required. Figure 23: DC PSU Connection Example

4.4 Connecting Serial and Management Cables

The accessory kit includes the following cables:

• RJ-45 to DB-9 serial adapter cable.
• RJ-45 Ethernet cable. Table 7: RJ-45 to DB-9 Connections lists the pin connections of the RJ-45 to DB-9 adapter cable.

Table 7: RJ-45 to 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 Note: RJ-45 to DB-9 connections: For models with a console management port on the rear panel, RJ-45 pin 1 (RTS) is connected to RJ-45 pin 8 (CTS); RJ-45 pin 2 (DTR) and RJ-45 pin 7 (DSR) are not electrically connected to any signal. For most models, the front panel contains the console, management, and USB ports. The front panel ports display the ports on the front panel of the DCS-7050QX-32S switch. The rear panel ports display the ports on rear panel of the DCS-7280SR-48C6 switch. The front panel and rear panel display all switches covered by this guide. Figure 24: Front Panel Ports

1 USB port 3 Console serial port

2 Ethernet management port

Figure 25: Rear Panel Ports

1 System status LED 3 Activity status LED 5 USB port

2 Ethernet management port4 Console serial port 6 Link status LED

Connect the front or rear panel ports as follows:

• Console (Serial) Port: Connect to a PC with the RJ-45 to DB-9 serial adapter cable. The switch uses the following default settings:
• 9600 baud
• No flow control
• 1 stop bit
• No parity bits
• 8 data bits
• Ethernet Management Port: Connect to 10/100/1000 management network with RJ-45 Ethernet cable.
• USB Port: The USB port may be used for software or configuration updates. CAUTION : Excessive bending can damage interface cables, especially optical cables. Flexion excessive peut endommager les câbles d’interface, notamment des câbles optiques.

Arista switches ship from the factory in Zero Touch Provisioning (ZTP) mode. ZTP configures the switch without user intervention by downloading a startup configuration file or a boot script from a location specified by a DHCP server. To manually configure a switch, ZTP is bypassed. The initial configuration provides one username (admin) accessible only through the console port because it has no password. When bypassing ZTP, initial switch access requires logging in as admin, with no password, through the console port. Then you can configure an admin password and other password protected usernames. This manual configuration procedure cancels ZTP mode, logs into the switch, assigns a password to admin, assigns an IP address to the management port, and defines a default route to a network gateway. As the switch boots without a startup-config file, it displays the following through the console: The device is in Zero Touch Provisioning mode and is attempting to download the startup-config from a remote system. The device will not be fully functional until either a valid startup-config is downloaded from a remote system or Zero Touch Provisioning is cancelled. To cancel Zero Touch Provisioning, login as admin and type 'zerotouch cancel' at the CLI. localhost login: 1. Provide power to the switch (Cabling the Switch). 2. Connect the console port to a PC (Connecting Serial and Management Cables). 3. Log into the switch by typing admin at the login prompt. localhost login:admin 4. Cancel ZTP mode by typing zerotouch cancel. IMPORTANT: This step initiates a switch reboot. localhost>zerotouch cancel 5. After the switch boots, log into the switch again by typing admin at the login prompt. Arista EOS localhost login:admin Last login: Fri Mar 15 13:17:13 on console 6. Enter global configuration mode localhost>enable localhost#config 7. Assign a password to the admin username with the username secret command. localhost(config)#username admin secret pxq123 8. Configure a default route to the network gateway.

localhost(config)#interface management 1localhost(config-if-Ma1/1)#ip address 192.0.2.8/24 10. Save the configuration by typing write memory or copy running-config startup-config. localhost#copy running-config startup-config When the management port IP address is configured, use this command to access the switch from a host, using the address configured in step 9. ssh admin@192.0.2.8 Refer to the Arista Networks User Manual for complete switch configuration information.

The following topics are covered in this section:

• Front Indicators
• Switch Indicators
• Port Indicators
• Rear Status Indicators A.1 Front Indicators Reviews the Switch and Port Indicators of the device. A.1.1 Switch Indicators Front panel LEDs are located on the right side of the chassis and display system, fan, and power supply status. The front panel LEDs are labeled either as in Figure 26: System Status Indicators or as inFigure 27: System Status Indicators. Check your device for the specific method utilized. Figure 26: System Status Indicators

1 System status LED 3 Power supply 1 status

2 Fan status LED 4 Power supply 2 status

Figure 27: System Status Indicators

Table 8: Switch Indicators LED States (Front) LED Name LED State Device Status Blinking Green System is powering up. Green Normal operations. Due to power supply and fan redundancy, this LED will remain green if a single fan or power supply is missing or in a failed state. Blue The locater function is active. System Status LED Amber Two or more fans (any combination of fan modules or PSU fans) are disconnected or malfunctioning. The switch will automatically execute a “graceful shutdown” shortly. Green All fan and power modules are operating normally. Amber Single fan module is removed or malfunctioning. It is also amber when a PSU is completely removed or has a stuck fan rotor. Fan Status LED Red Two or more fans (any combination of fan modules or PSU fans) are disconnected or malfunctioning. The switch will automatically execute a “graceful shutdown” shortly. Green PSU is functioning and fully operational. AC is present, Aux output is ON, and Main output is ON. PSU [1:2] Status LED Off PSU has been removed or is not operating properly due to AC cord being unplugged, its fan rotor being stuck, or an internal fault. A.1.2 Port Indicators Port LEDs, located in the vicinity of their corresponding ports, provide link and operational status. the following figure displays the Port LED location on the DCS-7050QX-32S switch. Figure 28: Port LEDs

1 Port 4 LEDs 3 Port 2 LEDs

2 Port 3 LEDs 4 Port 1 LEDs

Table 9: Port LED States (Front) provides status conditions that correspond to port LED states. Port LED behavior for QSFP+ and SFP+ ports is consistent.

Table 9: Port LED States (Front) LED State Status Off Port link is down. Green Port link is up. Yellow Port is software disabled. Flashing Yellow Port failed diagnostics. A.2 Rear Status Indicators Fan and power supply modules are accessed from the rear panel. Each fan and power supply module contains an LED that reports the module status. Fan Status LEDs are on the fan modules, as displayed in Figure 29: Fan Status LED. Figure 29: Fan Status LED

1 Fan module status LED

Table 10: Fan Status LED States (Rear) provides status conditions that correspond to fan status LED states. Table 10: Fan Status LED States (Rear) LED State Status Off The fan module is not detected. If it is inserted, it may not be seated properly. Green The fan is operating normally. This LED state is exclusive to its fan module, and independent of the states of its neighboring fans and power supplies. Red The fan has failed. The AC Power Supply Status LEDs are on the power supply modules, as displayed in Figure 30: AC Power Supply Status LED.

Figure 30: AC Power Supply Status LED

1 Power supply status

Table 11: AC Power Supply Status LED States (Rear) provides status conditions that correspond to the AC power supply status LED states. Table 11: AC Power Supply Status LED States (Rear) Power Supply State PWR-500AC-F PWR-500AC-R PWR-745AC-F PWR-745AC-R PWR-747AC-F PWR-747AC-R Input power present Normal operation Green Green Green Input power present Power Supply fault Yellow Yellow Yellow No Input power Supply installed in chassis Off Off Off Input power present Supply not installed in chassis Green Green Green The DC Power Supply Status LEDs are on the power supply modules, as displayed inFigure 31: DC Power Supply Status LED. Figure 31: DC Power Supply Status LED Table 12: DC Power Supply Status LED States (Rear) provides status conditions that correspond to the DC power supply status LED states.

Table 12: DC Power Supply Status LED States (Rear) Power Supply State PWR-500DC-F PWR-500DC-R PWR-1900DC Input power present Normal operation Green Green Input power present Power Supply fault Blinking Yellow Blinking Yellow No Input power Supply installed in chassis Off Off Input power present Supply not installed in chassis Blinking Yellow Blinking Yellow Note: You can narrow down the error condition by logging in to the switch to view the specific device state. Refer to the Arista User Manual’s Switch Environment Control chapter, under the topic Viewing Environment Status, for further information on the show environment commands.

This appendix lists the installation parts contained in the switch accessory kit. Each switch provides an accessory kit that contains parts that are required to install the switch. The following topics are covered in this section:

• Rack Mount Parts
• Two-Post Rack Mount Parts
• Four-Post Rack Mount Parts
• Cables
• Ground Extender Kit (Optional) B.1 Rack Mount Parts Describes the rack mounting parts and cables requied for installation of the device. B.1.1 Two-Post Rack Mount Parts Lists the parts required for a two-post and four-post mounting system. Figure 32: Two-Post Rack Mounting Brackets

1 Two-post rack mount

B.1.2 Four-Post Rack Mount Parts Lists the parts required for a two-post and four-post mounting system.

Figure 33: Four-Post Rack Mount Parts

1 Rail-slide

3 Rack plugs (detail)

4 Rail (assembled)

B.2 Cables Lists the cables required for installation of the device. Quantity Description

2 Power cables: IEC-320/C13-C14, 13 A, 250 V

1 RJ-45 Patch Panel Cable

1 RJ-45 to DB9 Adapter Cable

Warning: All provided power cables are for use only with Arista products. B.3 Ground Extender Kit (Optional) Lists the cables required for installation of the device. SKU Description KIT-GND-EXT-1RU 1 Ground extender kit for NEBS compliance 1. Available only for certain devices.

This appendix displays the front panel of all switches covered by this guide. Note: All devices are designed to fit into a 19” rack. The appearance may be different than those shown based on PSU and fan modules used. Figure 34: DCS-7280SE-64

1 Console port (serial) 4 Power supply 1 status

7 Ethernet Management

2 System status LED 5 Power supply 2 status

8 Port numbers

3 Fan status LE 6 USB port

Figure 35: DCS-7280SE-68

3 Fan status LED 6 USB port

Figure 36: DCS-7280SE-72 Figure 37: DCS-7280QR-C36 Figure 38: DCS-7280TR-48C6

5 USB port

6 Port numbers

Figure 39: DCS-7280SR2A-48YC6 Figure 40: DCS-7280TRA-48C6 Figure 41: DCS-7280QRA-C36S

Figure 42: DCS-7280SRAM-48C6 Figure 43: DCS-7280SR-48C6 Figure 44: DCS-7280SR2-48YC6

Figure 45: DCS-7280SRA-48C6 Figure 46: DCS-7280SR2K-48C6

5 Port numbers

Figure 47: DCS-7280SRM-40CX2

1 Ethernet Management port4 Power supply 1 status

7 Console port (serial)

Figure 48: DCS-7280CR3-32D4 and DCS-7280CR3K-32D4

6 Port-speed group

Figure 49: DCS-7280CR3-32P4 and DCS-7280CR3K-32P4 Figure 50: DCS-7280DR3-24 and DCS-7280DR3K-24

Figure 51: DCS-7280PR3-24 and DCS-7280PR3K-24 Figure 52: DCS-7280SR3-48YC8 and DCS-7280SR3K-48YC8

1 Port numbers 3 Fan status LED 5 Power supply 2 status

2 System status LED 4 Power supply 1 status

6 Port status LED (port 25)

All switches covered by this guide use one of the rear panels shown below. Depending on the installed power supply module, the appearance could be different from those shown. Note: All devices are designed to fit into a 19” rack. The appearance may be different than those shown based on PSU and the modules used. Note: Handle color indicates airflow direction. Figure 53: Rear Panel for Models with Management Ports in the Front

1 Power supply 1 4 Fan module 3

2 Fan module 1 5 Fan module 4

3 Fan module 2 6 Power supply 2

Figure 54: Rear Panel for Models with Management Ports in the Rear

1 Power supply module 1 6 Fan module 3 11 Fan module 3 status LED

2 System status LED 7 Fan module 4 12 Fan module 2 status LED

3 Ethernet management port8 Power supply module 2 13 Fan module 1 status LED

4 Fan module 1 9 Earth grounding pad 14 Console serial port

5 Fan module 2 10 Fan module 4 status LED15 USB port

Figure 55: Rear Panel for Models with Management Ports in the Rear and Dual-fan Modules

1 Power supply module 1 5 Fan module 1 status LED9 Fan module 3 status LED

2 Power supply module 1

6 Fan module 2 release 10 Power supply module 2

3 Management ports 7 Fan module 2 status LED11 Power supply module 2

4 Fan module 1 release 8 Fan module 3 release 12 Fan module bezel1

1. Bezel color indicates airflow direction.

Maintenance and Field Replacement The following topics are covered in this section:

• Considerations
• Power Supplies
• Removing a Power Supply
• Installing a Power Supply
• Fan Modules
• Removing a Fan Module
• Installing a Fan Module E.1 Considerations Review the following considerations when installing the device.
• All fans and power supplies are hot swappable.
• The switch can be running while a power supply is being installed or removed, but the power supply being replaced must not be connected to a power source.
• All slots must be filled or covered with a blank for operation (even though power supply or fans may not be functional).
• Before you begin, refer to the Arista Networks document Safety Information and Translated Safety Warnings available at: https://www.arista.com/en/support/product-documentation. Note: Descriptions for the removal and replacement of power supplies and fans are for a representative power supply or fan. Locations of status indicator LEDs may differ. Refer to the front and rear panel illustrations of your device to locate the appropriate LED. E.2 Power Supplies The following steps are required when removing power supplies from a switch. Note: Only a representative power supply module is shown in Figure 56: Removing and Installing Power Supply. For the location of the power supply on your switch, refer to Rear Panel. E.2.1 Removing a Power Supply 1. Ground yourself with an ESD wrist strap. 2. Power down the power supply to be removed by disconnecting the AC power cable. 3. Push the power supply release lever and remove the power supply Figure 56: Removing and Installing Power Supply.

Figure 56: Removing and Installing Power Supply

1 Release lever

2 Remove PSU

E.2.2 Installing a Power Supply You must make space for installing the power supply by removing an existing one Removing a Power Supply. 1. Remove the replacement power supply from its packaging. 2. Slide the new power supply into the empty slot. 3. Slide the new power supply into the switch until the power supply is fully seated and the release lever snaps into place Figure 56: Removing and Installing Power Supply. 4. Connect the power cord to the power supply. 5. Verify the LEDs on the power supply. Note: The Power Supply status LED should be a steady green for normal operation. 6. Verify the new power supply operation by issuing the show environment power command. switch#show environment power 7. The output of the command will list the power supplies in operation and should include the one you replaced. E.3 Fan Modules Note: Hot swap fans within 30 seconds to prevent the switch from overheating. Ensure that the module you are replacing matches those already installed in the switch. E.3.1 Removing a Fan Module The following steps are required when removing or replacing fans from a switch. Note: Only a representative fan module is shown in Figure 57: Removing Fan Module. For the location of the fan modules on your switch, refer to Rear Panel. 1. Ground yourself with an ESD wrist strap. 2. Push the fan module release lever and slide the fan module out of the switch.

Maintenance and Field Replacement Figure 57: Removing Fan Module E.3.2 Installing a Fan Module You must make space for installing the fan module by removing an existing one. 1. Remove the replacement fan from its packaging. 2. Slide the new fan module into the switch until the module is fully seated and the release lever snaps into place (Figure 58: Inserting Fan Module). Figure 58: Inserting Fan Module 3. Verify that the fan module is working normally. Note: The fan module status LED should be a steady green for normal operation.

This appendix lists the Regulatory Model Numbers (RMNs), where applicable, for the product models for the switches described in this document. Table 13: Regulatory Model Numbers and Product Numbers Regulatory Model Number (RMN) Product Number(s) AN1504 DCS-7280SR-48C6 AN1506 DCS-7280TR-48C6 AN1508 DCS-7280QR-C36 AN1604 DCS-7280QRA-C36S AN1608 DCS-7280TRA-48C6 AN1615 DCS-7280SR2A-48YC6 AN1623 DCS-7280SRAM-48C6 AN1701 DCS-7280SR2K-48C6 AN1626 DCS-7280SRM-40CX2 AN1708 DCS-7280PR3-24, DCS-7280PR3K-24 AN1730 DCS-7280DR3-24, DCS-7280DR3K-24 AN1715 DCS-7280CR3-32P4, DCS-7280CR3K-32P4 AN1731 DCS-7280CR3-32D4, DCS-7280CR3K-32D4 AN1728 DCS-7280SR3-48YC8, DCS-7280SR3K-48YC8 AN1742 DCS-7280CR3-36S, DCS-7280CR3K-36S

This appendix provides Taiwan RoHS information for switches covered by this guide. For Taiwan BSMI RoHS Table, go to https://www.arista.com/assets/data/pdf/AristaBSMIRoHS.pdf.