7500N ARISTA | Alldatasheet

Document overview

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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
  • 3.1.1 Two-Post Rack Mount
  • 3.1.2 Four-Post Rack Mount
  • 3.2.1 Assembling the Shelf
  • 3.2.2 Inserting the Switch into the Rack
  • 4.1 Cabling the Power Supplies
  • 4.2 Cabling Secondary Ground
  • 4.3 Cabling the AC Power Supply
  • 4.4 Cabling the DC Power Supply
  • 4.4.1 DC Power Supplies
  • 4.4.2 Wire and Lug Preparation
  • 4.4.3 PWR-3K-DC-RED Power Supply
  • 4.5 DC Power Adapter Installation for PWR-2700-DC-R
  • 4.5.1 Connecting the Ground to PWR-2700-DC-R Power Supply
  • 4.5.2 Connecting the Power Cable Lug to the Terminal Studs
  • 4.6 Power Supply Specifications
  • 4.7 Power Supply Configurations
  • 4.7.1 Recommendations for Power Supply Usage
  • 4.8 Power Supply Redundancy
  • 4.9 Connecting Supervisor Cables
  • 4.10 Connecting Line Card Modules and Cables

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

  • DCS-7504N
  • DCS-7508N
  • DCS-7512N
  • DCS-7516N 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 7500N Series Modular Switches 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 (7504N and 7508N Rack Mounting and 7512N and 7516N Shelf Rack Mount Installation). 4. Connect the switch to the power source and network devices (Cabling the Power Supplies).

  1. Configure the switch (Configuring the Modular Switch). Important: Class 1 Laser Product: This product has provisions to install Class 1 laser transceivers that provides 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 60825, 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: 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. 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.

1.6 Specifications

Modular Switch Specifications lists the specifications of Arista Data Center modular switches covered by this guide. Table 1: Modular Switch Specifications DCS-7504N DCS-7508N DCS-7512N DCS-7516N Height 7RU: 312 mm (12.25 inches) 13RU: 578 mm (22.75 inches) 18RU: 801 mm (31.53 inches) 29RU: 1289 mm (50.75 inches) Width 483 mm (19 inches) maximum 483 mm (19 inches) maximum 483 mm (19 inches) maximum 483 mm (19 inches) maximum Depth 795 mm (31.3 inches) 795 mm (31.3 inches) 849 mm (33.4 inches) 941 mm (37.1 inches) Weight 222 lbs (101 kg) fully loaded 400 lbs (182 kg) fully loaded 661 lbs (300 kg) fully loaded 1025 lbs (465 kg) fully loaded DC Input Voltage (per circuit) -48/-60 V DC -48/-60 V DC -48/-60 V DC -48/-60 V DC, DC Branch Circuit Protection

100 A 100 A 100 A 100 A

Voltage (per circuit) 200-240 V 200-240 V 200-240 V 200-240 V AC Branch Circuit Protection

20 A 20 A 20 A 20 A

2 to 4 circuits 2 to 8 circuits 2 to 12 circuits6 to 20 circuits Ambient Temperature 0° to 40°C (32° to 104°F) 0° to 40°C (32° to 104°F) 0° to 40°C (32° to 104°F) 0° to 40°C (32° to 104°F) Storage Temperature -40° to 70°C (-40° to 158°F) -40° to 70°C (-40° to 158°F) -40° to 70°C (-40° to 158°F) -40° to 70°C (-40° to 158°F) Relative Humidity 5 to 90% 5 to 90% 5 to 90% 5 to 90% Altitude 0 to 3,000 meters (0 to 10,000 feet) 0 to 3,000 meters (0 to 10,000 feet) 0 to 3,000 meters (0 to 10,000 feet) 0 to 3,000 meters (0 to 10,000 feet) Cooling See Power draw configurations in Table 2: 7500N Series Power Specifications See Power draw configurations in Table 2: 7500N Series Power Specifications See Power draw configurations in Table 2: 7500N Series Power Specifications See Power draw configurations in Table 2: 7500N Series Power Specifications

Table 2: 7500N Series Power Specifications lists power specifications of modular switch components. Table 2: 7500N Series Power Specifications Module Type Part Number Power Draw (Typical / {Hot} Maximum) DCS-7500E-SUP 47 W / 87 W DCS-7500-SUP2 80 W / 120 W Supervisor Modules DCS-7516-SUP 88 W / 130 W DCS-7500E-36Q-LC 450 W / 556 W DCS-7500E-72S-LC 212 W / 305 W DCS-7500E-48S-LC 197 W / 285 W DCS-7500E-12CM-LC 408 W / 495 W DCS-7500E-6C2-LC 300 W / 320 W DCS-7500E-12CQ-LC 414 W / 486 W DCS-7500E-48T-LC 318 W / 332 W DCS-7500R-36CQ-LC 758 W / 863W DCS-7500R-36Q-LC 368 W / 406 W DCS-7500R-48S2CQ-LC 202 W / 220 W DCS-7500RM-36CQ-LC 944 W / 1040 W DCS-7500R2-18CQ-LC 313 W / 350 W DCS-7500R2-36CQ-LC 601 W / 654 W DCS-7500R2A-36CQ-LC 830 W / 921 W DCS-7500R2M-36CQ-LC 845 W / 941 W DCS-7500R2AM-36CQ-LC 963 W / 1085 W DCS-7500R2AK-36CQ-LC 830 W / 921 W DCS-7500R2AK-48YCQ-LC 253 W / 276 W DCS-7500R-8CFPX-LC 900 W / 1180 W DCS-7500R3-36CQ-LC 410 W / 450 W DCS-7500R3K-36CQ-LC 410 W / 450 W DCS-7500R3-24P-LC 538 W / 558 W Line Card Modules DCS-7500R3-24D-LC 530 W / 550 W DCS-7504E-FM 80 W / 105 W DCS-7508E-FM 155 W / 195 W DCS-7504R-FM 121 W / 163 W / 237 W DCS-7508R-FM 224 W / 298 W / 433 W DCS-7512R-FM 570 W / 680 W / 760 W DCS-7516R-FM 570 W / 770 W / 1053 W Fabric Modules DCS-7504R3-FM 220 W / 287 W

DCS-7508R3-FM 280 W / 387 W PWR-2700-DC-R (Fan Power) 43 W / 47 W PWR-3KT-AC RED (Fan Power)

43 W / 47 W

PWR-3K-DC-RED (Fan Power)

2 DCS-7500E-SUP,

4 DCS-7504E-FM, 4

3150 W / 3400 W7504N Series System

2 DCS-7500-SUP2,

4 DCS-7504R-FM, 4

3500 W / 4500 W

6 DCS-7508E-FM, 8

5500 W / 6400 W

6 DCS7508R-FM, 8

5820 W / 6880 W / 7750 W

7720 W / 8990 W / 9880 W

with 2 DCS-7500-SUP2,

6 DCS-7508R-FM, 8

4600 W / 5360 W / 6230 W

with 2 DCS-7500-SUP2,

3270 W / 3900 W / 4740 W

with 2 DCS-7500-SUP2,

9100 W / 10300 W / 11000 W

with 2 DCS-7500-SUP2,

6400 W / 7300 W/ 7900 W

2 DCS-7500-SUP2, 6

DCS75012R-FM, 12 DCS-7500R-36CQ-LC

12800 W / 14700 W / 15300 W

with 2 DCS-7500-SUP2,

6 DCS-7512R-FM, 9

DCS-7500R-36CQ-LC, 3 DCS-7500R-36Q-LC

11600 W / 13300 W / 13900 W

with 2 DCS-7500-SUP2,

6 DCS-7512R-FM, 3

DCS-7500R-36CQ-LC, 9 DCS-7500R-36Q-LC

9300 W / 10600 W / 11200 W

DCS-7512R-FM, 12 DCS-7500RM-36CQ-LC

14400 W / 16600 W / 18000

Note: 7512N systems support only 7500R and 7500R3 Series Line cards. Full Chassis loaded with DCS-7512R-FM, 12 DCS-7500R2-36CQ-LC

10200 W / 11800 W / 13200 W

with 2 DCS-7516-SUP,

6 DCS7516R-FM, 16

DCS-7500R-36CQ-LC, 16 PWR-3KT-AC-RED

16000 W / 19000 W / 21000 W

with 2 DCS-7516-SUP, DCS-7500R2-36CQ-LC, 16 PWR-3KT-AC-RED

13500 W / 15600 W / 17500 W

Note: 7516N systems support only 7500R Series Line cards. Full chassis loaded with 2 DCS-7516-SUP, DCS-7500RM-36CQ-LC, 20 PWR-3KT-AC-RED

19000 W / 22000 W / 24000 W

  • Not N+N redundant power at worst case Temp/Elevation. Note: Includes typical power supply conversion inefficiency. Contact your local Sales Engineer for 7500 power calculator details. Note: Power numbers given as Typical/Maximum or Typical/Hot/Maximum where Hot is defined as 40°C Sea Level.

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:

  • Floor Space: Install the switch in an area that provides adequate clearance for removing front and rear components. Figure 1: Clearance Requirements and Footprint for Switches displays the dimensions and footprint of the switch clearance requirements for the switches. Figure 1: Clearance Requirements and Footprint for Switches Table 3: Clearance Requirements and Footprint Dimensions shows the dimensions for each of the modular switches. Table 3: Clearance Requirements and Footprint Dimensions Clearance Requirements DimensionsSwitch A B C
  • Temperature and Ventilation: For proper ventilation, install the switch where there is ample airflow to the front and back of the switch. The 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 direct air from the front panel to the rear panel. Orient the front panel toward the cool aisle.
  • Rack Space Requirements: Table 4: Rack Space Requirements shows the rack space requirements for each of the modular switches. Table 4: Rack Space Requirements Rack or Cabinet (standard 19" EIA)Switch 2-post 4-post Switch Height (RU) DCS-7504N Yes Yes 7 DCS-7508N Yes Yes 13 DCS-7512N No Yes 18 DCS-7516N No Yes 29 Note: The accessory kit provides the required mounting brackets or shelf for each switch.
  • Power Requirements: Arista switches require a minimum number of operating power supplies in the top section of all chassis, AC or DC and for each power domain of switches with multiple power domains. Refer to Power Supply Specifications for more details regarding your switch. Important: DC cables should be protected with circuit overcurrent protection devices and circuit disconnect means. To power off a unit, power must be disconnected from ALL power cables. DC câbles doivent être protégés avec dispositifs de protection de surintensité circuit et moyens de déconnexion du circuit. Pour éteindre une unité, l'alimentation doit être débranchée de TOUS les câbles d'alimentation.
  • 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.
  • AC power cords can reach from the AC power outlet to the input connectors.
  • DC power cables can reach from the DC power distribution unit to the input connectors.

2.2 Tools and Parts Required for Installation

The following tools are required to install a modular switch:

  • Mechanical device capable of lifting chassis being installed (Table 1: Modular Switch Specifications).
  • Torque reading nut driver (for DC power supplies).
  • #2 Phillips head screwdriver.
  • Torque reading screwdriver using #2 Pozidriv or 1/4" flat bit (Needed for PWR-2700-DC-R).

Two-post and Four-post Rack Mounts Table 5: Rack Component Requirements shows the rack components required for each of the modular switches. Table 5: Rack Component Requirements Rack or Cabinet (standard 19" EIA)Switch Rack Screws 1 Rack Nuts 2 Notes 8 8 2-post installationDCS-7504N 10 10 4-post installation 10 10 2-post installationDCS-7508N 16 16 4-post installation DCS-7512N 22 22 4-post installation DCS-7516N 24 24 4-post installation 1The accessory kit includes screws that fit many common equipment racks. 2Rack nuts are only for racks with unthreaded, rack-post holes.

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 surfaces (such as an anti-static mat) to dissipate static charge.
  • Wear an ESD 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:

  • 7504N and 7508N Rack Mounting
  • 7512N and 7516N Shelf Rack Mount Installation The accessory kit provides components for installing the switch in two-post and four-post racks.
  • Two-Post Rack Mount provides instructions for mounting the switch in a two-post rack.
  • Four-Post Rack Mount provides instructions for mounting the 7504N and 7508N switches in a four- post rack.
  • 7512N and 7516N Shelf Rack Mount Installation provides instructions for mounting the 7512N and the 7516N switches in a shelf four-post rack. The rack mounting procedure is identical for the 7504N and 7508N Series switches. Illustrations in this chapter depict the mounting of an unpopulated 8-slot chassis. The 7512N and the 7516N switches require a different mounting shelf, and only for the four-post rack. Illustrations in this chapter depict the mounting of an unpopulated 12-slot chassis and a 16-slot chassis. After completing the instructions for your rack type, proceed to Cabling the Modular Switch. 3.1 7504N and 7508N Rack Mounting

3.1.1 Two-Post Rack Mount

To mount the switch to a two-post rack, assemble mounting brackets to the middle of the chassis, then attach the brackets to the rack. The switch does not support a front or rear mount into a two-post rack. The accessory kit includes the following two-post mounting parts:

  • 2 - center-mount brackets
  • 20 - M4x8 pan-head Phillips screws

3.1.1.1 Attaching Mounting Brackets to the Chassis

  1. Orient the switch chassis and the two center-mount brackets (Figure 2: Attaching the Center-mount Brackets). Position the flanges that attach to the rack posts toward the rear of the chassis. 2. Attach both center-mount brackets to the chassis. Each bracket requires ten M4x8 pan-head Phillips screws.

Figure 2: Attaching the Center-mount Brackets

1 Center mount brackets

3.1.1.2 Inserting the Switch into the Rack (7504N)

The rack mounting assembly is identical for all 7500N Series switches. 1. Move the chassis to the rack using a mechanical lift. If modules are inserted in the chassis, use the lift carefully to avoid damaging any components. 2. Lift the chassis into the rack. Position the flanges against the rack posts. Figure 3: Lifting the Chassis into the Two-post Rack. Figure 3: Lifting the Chassis into the Two-post Rack 3. Select mounting screws that fit your equipment rack. 4. A minimum of four screws is required on each side of the chassis. The accessory kit provides screws that fit many common equipment racks. When installing the switch into a rack with unthreaded post holes, nuts are also required to secure the switch to the rack posts. 5. Attach the bracket flanges to the rack posts (Figure 4: Attaching Flanges to the Rack Post). Space the screws evenly along the flange.

Figure 4: Attaching Flanges to the Rack Post 6. After completing the two-post installation, proceed to Cabling the Modular Switch.

3.1.2 Four-Post Rack Mount

The switch is mounted onto a four-post rack by assembling a shelf into the rack, then placing the switch on the shelf. Illustrations in this chapter depict the mounting of an unpopulated 8-slot chassis. The accessory kit provides the following four-post mounting parts:

  • 2 front brackets
  • 4 shelf supports
  • 2 back brackets (not needed for racks with threaded holes)
  • left shelf
  • right shelf Figure 5: Left front post assembly: Four post rack mount displays the front four-post mounting parts. Figure 6: Left rear post assembly and shelf support orientation displays the rear four-post mounting parts.

3.1.2.1 Assembling the Shelf (7504N and 7508N)

  1. Attach the front bracket and shelf support to the left front rack post, as shown in Figure 5: Left front post assembly: Four post rack mount. An up arrow is printed on the shelf support to indicate its proper orientation. Unthreaded rack holes: Use the M6 screws and cage nuts supplied in the accessory kit. Threaded rack holes: Attach the front bracket to the post with screws that can be threaded through the rack post. 2. Secure the shelf support to the post with nuts that fit the screws threaded through the post. 7504N - Requires six M6 screws and cage nuts. 7508N - Requires eight M6 screws and cage nuts.

Figure 5: Left front post assembly: Four post rack mount

1 M6 cage nut 4 M6 nut 7 Front Bracket

2 M6 nut 5 Switch Bottom 8 M6 screw

3 Shelf support 6 Switch Top 9 Front rack post

  1. Repeat Step 1 on the right front rack post, assembling the parts at the same vertical level as those on the left rack post. 4. Attach the shelf support and back bracket to the left rear post (Figure 6: Left rear post assembly and shelf support orientation). The shelf support must be assembled at the same vertical level on the front and rear posts. An up arrow is printed on the shelf support to indicate its proper orientation. Unthreaded rack holes: Attach the parts as displayed in following figures. Threaded rack holes: Attach the shelf support to the post with screws that thread into the rack post. The back bracket is not required on threaded racks.

1 Back bracket 4 M6 screw

2 M6 screw 5 Rear rack post

3 Shelf support

Figure 6: Left rear post assembly and shelf support orientation

1 Rear rack post

2 Front rack post

3 Shelf supports

  1. Adjust the left shelf by sliding its components to fit between the front left and rear left rack posts, as shown in Figure 7: Adjusting the left shelf. 6. Lift the left shelf above the shelf supports installed on the front left and rear left rack posts (Step 1 and Step 4). Align the holes and hook with the stubs on the brackets as shown in Figure 8: Both switch shelves installed. Lower the shelf such that the bracket stubs are inserted into the shelf holes and hook. 7. Press down firmly on the shelf to ensure it is seated securely on the rack posts. 8. Install the right shelf on the right front and right rear rack posts by repeating Step 5 and Step 6 to obtain the rack configuration shown in .

Figure 7: Adjusting the left shelf

2 Left shelf

3 Front rack post

Figure 8: Both switch shelves installed

1 Left shelf

2 Rear rack post

3 Right shelf

4 Front rack post

3.1.2.2 Inserting the Switch into the Rack (7508N)

The rack mounting assembly is identical for the 7504N and 7508N switches. Illustrations in this chapter depict the mounting of an unpopulated 8-slot chassis.

3.2.1 Assembling the Shelf

  1. For threaded racks, remove the plastic alignment spacers and use the 3 mm diameter alignment pins. Figure 11: Alignment Spacer Figure 12: Rack Mount Shelf Orientation 1 7512N Top (Front) 4 Cage nut locations 2 7516N Top (Front) 5 Switch Bottom

3 Rack (Rear - both

switches) The following table lists the cage nut locations for the switches on the rack front and rear.

Table 6: Cage Nut Locations on Rack Switch Cage Nut Locations 7512N (Front of the rack) Top hole 1st U Middle hole 2nd U Middle hole 4th U Bottom hole 5th U Top hole 9th U Middle hole 15th U Middle hole 17th U 7516N (Front of the rack) Top hole 1st U Middle hole 2nd U Middle hole 4th U Bottom hole 5th U Top hole 13th U Top hole 16th U Bottom hole 26th U Top hole 28th U 7512N and 7516N (Rear of the rack) Top hole 1st U Middle hole 2nd U Middle hole 4th U Bottom hole 5th U 2. Attach the front bracket of the shelf support to the left front rack post, as shown in Figure 13: Left Front Post Assembly. An up arrow is printed on the shelf support to indicate its proper orientation. Unthreaded rack holes: Use the M6 screws and cage nuts supplied in the accessory kit. Threaded rack holes: Attach the front bracket to the post with screws that can be threaded through the rack post. 3. Hook the alignment pin to the bottom hole of the 6th U from bottom as shown.

Figure 13: Left Front Post Assembly

1 For threaded rack, remove the plastic alignment spacer and

use a 3 mm diameter alignment pin as shown.

2 Hook the alignment pin to the bottom hole of the 6th U from the

bottom. 4. Repeat Step 1 and Step 3 on the right front rack post, assembling the parts at the same vertical level as those on the left rack post. 5. Attach the shelf support and back bracket to the left rear post. The shelf support must be assembled at the same vertical level on the front and rear posts. An up arrow is printed on the shelf support to indicate its proper orientation. Unthreaded rack holes: Use the M6 screws and cage nuts supplied in the accessory kit. Threaded rack holes: Attach the shelf support to the post with screws that thread into the rack post.

Figure 14: Left Rear Post Assembly and Shelf Support Orientation 1 Install all four screws in the back. 6. Lift the shelf above the shelf supports installed on the left and right rack posts (step 2 and step 3). Align the holes and hook with the stubs on the brackets. Lower the shelf such that the shelf- support-bracket stubs are inserted into the shelf holes and hook. 7. Rear: Fasten screws to all holes

  • Front: Fasten screws only where indicated with arrows (2x).
  • Rear: Fasten screws to all holes.

Figure 15: Lower the Shelf into the Bracket Stubs 8. Press down firmly on the shelf to ensure it is seated securely on the rack posts.

3.2.2 Inserting the Switch into the Rack

The rack mounting assembly is identical for all 7500N Series switches. Illustrations in this chapter depict the mounting of an unpopulated 12-slot or 16-slot chassis. 1. Move the chassis to the rack using a mechanical lift (Figure 16: Lifting the 12-slot Chassis shows the 12-slot). If modules are inserted in the chassis, use the lift carefully to avoid damaging any components.

Figure 18: Secure the Chassis to the Rack 3. Ensure the rack kit is firmly installed. 4. Secure the chassis by use of 10 rack screws attaching the ears of the chassis to the front flanges of the rack posts. 5. After completing the Shelf Rack Mount Installation, proceed to Cabling the Modular Switch.

Cabling the Modular Switch The following topics are covered in this section:

  • Cabling the Power Supplies
  • Cabling Secondary Ground
  • Cabling the AC Power Supply
  • Cabling the DC Power Supply
  • DC Power Adapter Installation for PWR-2700-DC-R
  • Power Supply Specifications
  • Power Supply Configurations
  • Power Supply Redundancy
  • Connecting Supervisor Cables
  • Connecting Line Card Modules and Cables

4.1 Cabling the Power Supplies

Before you begin, refer to the Arista Networks document Compliance and Safety Guide available at: https://www.arista.com/en/support/product-documentation. Important: Power down the switch: Remove all power cords from the power inlets. Mettez le commutateur: Retirez tous les cordons d'alimentation des prises d'alimentation 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. Note: Many configurations will require additional power supplies. Nombreuses configurations exigera des alimentations supplémentaires. Important: All power supply slots must be filled with either a power supply or blank to ensure proper air flow. Tous les emplacements d'approvisionnement de puissance doivent être remplis avec une alimentation ou vide pour assurer un débit d'air appropriée. 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. The 7500N chassis requires the connection of at least two operating power supplies in the top row to active circuits.

Each power supply includes a fan that maintains proper power supply temperature and cools the supervisor modules. The appendices display the location of components for all switches described in this guide. Figure 19: Supported Power Supplies shows the supported power supplies for the 7500N family of switches. Figure 19: Supported Power Supplies 1PWR-3KT-AC-Red 2PWR-2700-DC-R 3PWR-3K-DC-Red

4.2 Cabling Secondary Ground

Front Panel displays the location of the secondary grounding pads on the front panel of the switch chassis. After mounting the switch into the rack, connect at least one of the secondary grounds to the data center ground. After the switch is grounded, ESD wrist straps can be grounded by connecting them to one of the attach points. Important: Grounding wires and grounding lugs are not supplied. Wire size should meet local and national installation requirements. Commercially available 2 or 4 AWG wire is recommended for installations in the U.S. À la terre et de mise à la terre fils cosses ne sont pas fournis. Calibre des fils doit satisfaire des exigences de l'installation locale et nationale. Disponible dans le commerce 2 ou 4 AWG fil est recommandé pour les installations aux États-Unis. Important: This equipment must be grounded. Never defeat the ground conductor. This unit requires over-current protection. Cet équipement doit être mis à la terre. Ne jamais modifier le conducteur de terre. Cet appareil nécessite de protection contre les surintensités. Important: Secondary Grounding wires, lugs and screws (M4 x 0.7) are not supplied. Secondaire à la terre, câbles, cosses et vis (M4 x 0.7) ne sont pas fournis. Secondary ground locations on the switches are displayed in Rear Panel.

Cabling the Modular Switch Power down the switch: Remove all power cords from the power inlets.

4.3 Cabling the AC Power Supply

Rear Panel displays the rear panel location of power supplies and fabric modules. The switch uses power cables with IEC-320 C-19 plugs. The accessory kit provides IEC-320 C-19 to C-20 power cables, each two meters long. To insert a power cable, plug the power cables into the inlet.

4.4 Cabling the DC Power Supply

Important: The -48V and Battery-Return leads are a pair and should run adjacent to each other and be approximately the same length. Le - 48V et câbles de batterie-retour sont une paire courir à côté de l'autre et doivent être à peu près la même longueur.

4.4.1 DC Power Supplies

The 7500N Series chassis supports two DC power supplies.

  • PWR-3K-DC-RED Power Supply.
  • DC Power Adapter Installation for PWR-2700-DC-R.

4.4.2 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. 1. Stranded copper wiring is required.

  • Commercially available 2 to 4 AWG wire is recommended for installations in the U.S.
  • Wire size should meet local and national installation requirements.
  • Grounding wires and grounding lugs are not supplied.
  • Strip the wires to the appropriate length for the lugs. The wires connecting the DC power supply to the power source must meet the following requirements:
  • DC Input Wire Size: 2 – 4 AWG (33.6 mm2 to 21.2 mm2).
  • Primary Ground Wire Size: 2 – 4 AWG (33.6 mm2 to 21.2 mm2) per power supply.
  • The conductors are copper. Figure 20: Lugs Wiring Terminations

1 Insulated wire 3 -48V + RTN lug 5 1/2”

2 Heat-shrink tubing 4 1/4” 6 5/8”

Figure 21: Ground Lug Wiring Termination (PWR-2700W-DC-R)

1 Insulated wire 3 5/16” Ø

2 Ground lug (right angle)4 Heat-shrink tubing

  1. Use agency-approved compression (pressure) lugs for wiring terminations with a single 5/16" mounting hole. Two-hole lugs should have 1/4" mounting holes on 5/8" centers. The PWR-2700W-DC-R ground lug is a right-angle lug. Check the terminations for the appropriate wire size. Use a ground wire of at least 2 – 4 AWG. Use only copper wire. 3. Slip on heat-shrink tubing on the wire ends before assembling the lugs on to the wire.
  • The lugs must be crimped with the proper tool.
  • The tubing should extend over the lug’s barrel and the wire's insulator. 4. Shrink the tubing with a heat gun.

4.4.3 PWR-3K-DC-RED Power Supply

Figure 22: PWR-3K-DC-RED Power Supply displays the PWR-3K-DC-RED power supply.

Cabling the Modular Switch Figure 22: PWR-3K-DC-RED Power Supply

1 Status LED 3 Ejector 5 -48V terminal

2 Ground terminal 4 RTN terminal

  1. Prepare the stranded wiring, see Wire and Lug Preparation. 2. Attach the power cable to the supply terminals. 3. Tightening Torque: 2.7 N-m (24 in.-lbs.)

4.5 DC Power Adapter Installation for PWR-2700-DC-R

4.5.1 Connecting the Ground to PWR-2700-DC-R Power Supply

The primary ground on the system requires a 2 – 4 AWG 5/16 inch lug per power supply. Figure 23: DC Power Supply displays the PWR-2700-DC-R power supply without the DC adapter. Figure 23: DC Power Supply

1 Ground

  1. Prepare the stranded wiring, see Wire and Lug Preparation.
  1. Attach the ground cable to the ground stud. 3. Tightening Torque: 2.7 N-m (24 in.-lbs.)

4.5.2 Connecting the Power Cable Lug to the Terminal Studs

  1. Prepare the stranded wiring, see Wire and Lug Preparation. 2. Remove the clear plastic cover protecting the terminal studs on the adapter by lifting the small center tab while sliding the cover off the adapter.

1 Plastic lid 2 Center tab

  1. Remove the flange locking nuts from each of the terminal studs.

1 Flange locking nuts

  1. Secure each power cable lug to the terminal studs with the flange locking nuts.
  • Attach the positive (+) DC source power cable lug to the RTN (return) terminal.
  • Attach the negative (–) DC source power cable lug to the –48V (input) terminal.
  • Torque the four flange locking nuts to 2.7 N-m (24 in.-lbs.).

Cabling the Modular Switch

1 Compression lugs 3 -48V

2 Compression lugs 4 RTN

  1. Slide the cover over the terminal studs until it clicks into place.

1 Captive screw slots

  1. Insert the adapter into the DC power supply.
  1. Tighten the two captive screws (on the bottom of the adapter) to the power supply module. Torque screws with #2 Posidriv to 2 N-m (17.7 in.-lbs.). 8. Attach the power cable to the DC power source. Important: Apply the ground connection first during installation and remove last when removing power. Appliquer le motif connexion tout d'abord pendant l'installation et supprimer dernière lors du retrait de puissance.

4.6 Power Supply Specifications

Table 7: Power Supply Specifications (each PSU) shows the power supply specifications for each of the PSUs supported. Table 7: Power Supply Specifications (each PSU) Power Supply Maximum Output Power Rating (DC) Input Voltage and Frequency Maximum Input Current Input Branch Circuit Protection PWR-2700-DC-R 2600 W -48 or -60 V (nominal)

80 A 100 A

3000 W -48 or -60 V

(nominal)

3000 W 200 to 240 V

(nominal) 50 - 60 Hz (nominal)

16 A 20 A

4.7 Power Supply Configurations

Table 8: Power Supply Configurations shows the power supply configurations for the modular switches.

Cabling the Modular Switch Table 8: Power Supply Configurations Modular Switch Recommended Number of PSUs (for redundancy) Number of PSUs Shipped in Bundle Minimum Number of PSUs Required (per power domain) Maximum Number of PSUs Supported Number of Power Domains DCS-7504N 4 4 2 4 1 DCS-7508N 6 6 2 8 1 DCS-7512N 8 8 2 12 1 DCS-7516N 12 12 3 20 2

4.7.1 Recommendations for Power Supply Usage

  • Use a separate circuit with required protection for each power supply.
  • Use the same PSU model when replacing a failed PSU. Check for a suitable alternative if the model is no longer supported or available.
  • Unless your switch allows for mixing power supplies, do not mix power supply types.
  • You must populate each power domain with the minimum number of PSUs required. Domains are separate banks of grouped supplies, Ten high and ten low for the 16 slot chassis (Domain 1: PS1 – PS10; domain 2: PS11 – PS20).
  • Chassis with multiple power domains should have an equal number of supplies in each domain.
  • For supervisor cooling purposes, all systems require the minimum number of PSUs, as specified in the Power Supply Configurations , in the top section behind the supervisors.
  • For 8-slot and 12-slot chassis (grouped power supplies top and bottom), Arista recommends an equal number of power supplies in the top and bottom groups.
  • For the 16-slot chassis with two power domains, the power domain with the lowest number of power supplies prescribes the total power available, therefore, Arista recommends equal number of PSUs in each domain.
  • Valid redundancy configurations for each domain are described in Power Supply Redundancy section.

4.8 Power Supply Redundancy

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. 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. Most installations will have redundant, dual, independent power feeds. For the following examples, each power feed originates from a different power provider. Each independent power feed will be referenced as label A and B.

  • Each supply is wired to one feed, either A, or B.
  • The recommended installation is to alternate A, B feeds. In a four supply system configuration, you would wire ABAB, left to right.
  • All power supply slots must be filled with a powered supply (A or B), or a blank (X), or a non- powered power supply. For supervisor cooling purposes, all systems require a minimum number of operating power supplies (see Power Supply Configurations ) at all times in the top half of the chassis. For optimal performance, alternate pairs of power supplies (A and B) evenly from top to bottom (8 or more slot chassis). Valid examples include:
  • AXAX Minimum Configuration supported, 2+0 (non-redundant)
  • ABAB 2+2 redundant
  • ABAB (Upper), AB (Lower) 3+3 redundancy
  • ABAB (Upper), ABAB (Lower) 4+4 redundancy
  • ABXXAB (Upper), ABXXAB (Lower) 4+4 redundancy (12-slot chassis)
  • ABABAB (Upper), ABABAB (Lower) 6+6 redundancy
  • AAAX for 3+0 or 2+1 redundancy, with the X anywhere
  • AAAA for 4+0 or 3+1 redundancy
  • ABABAB (Upper), ABABAB (Lower) 6+6 redundancy (12-Slot Chassis)
  • XABAX/XBABX (Upper), XABAX/XBABX (Lower) 6+6 redundancy (16-slot chassis)
  • BABAB/ABABA (Upper), BABAB/ABABA (Lower) 10+10 redundancy (16-slot chassis) Each power supply includes a fan that maintains proper power supply temperature and cools the supervisor modules. The following appendices display the location of the following component on all switches described in this guide. Front Panel displays the front panel location of the supervisor modules. Rear Panel displays the rear panel location of power supplies and fabric modules. Important: This unit requires over-current protection. Cet appareil nécessite de protection contre les surintensités. Important: Unused slots must be occupied or covered with a blank to ensure proper airflow through the chassis. Les emplacements inutilisés doivent être occupés ou recouvert d'un blanc pour assurer la bonne circulation d'air dans le châssis.

4.9 Connecting Supervisor Cables

Supervisor modules contain console, management, and USB ports. Figure 24: Supervisor DCS-7500E-SUP and Figure 25: Supervisor DCS-7500E-SUP 2 display port locations on the supervisors.

Cabling the Modular Switch Figure 24: Supervisor DCS-7500E-SUP

1 Status LED 5 Fan module status LED 9 Active LED

2 USB ports 6 Fabric module status LED

3 Ethernet management ports7 Linecard status LED

4 Serial console port 8 Power supply status LED

Figure 25: Supervisor DCS-7500E-SUP 2

1 Status LED 5 Clock input port (optional)9 Power supply status LED

2 USB ports 6 Fan module status LED 10 Active LED

3 Ethernet management ports7 Fabric module status LED

4 Serial console port 8 Linecard status LED

Figure 26: Supervisor DCS-7516-SUP

  • Console (Serial) Port: Connect to a PC with RJ-45 to DB-9 serial adapter cable. Default switch settings include:
  • 9600 baud
  • No flow control
  • 1 stop bit
  • No parity bits
  • 8 data bits The DCS-7516-SUP supervisor cards must be installed in one of the two slots designated for them in the DCS-7516N switch as shown in Figure 27: DCS 7516N Supervisor Slots. Note: Do not insert a line card into either of the slots 1 and 2, designated for a supervisor card. This could damage the modular switch. Slots for the line cards are numbered 3 through 18. Figure 27: DCS 7516N Supervisor Slots

1 Supervisor slot 1

2 Supervisor slot 2

Table 9: 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 8 4 DTR GND 4 5 GND CTS 8 7 RTS

  • Ethernet management port: Connect to 10/100/1000 management network with RJ-45 cable.
  • Connect to 10/100/1000 management network with RJ-45 cable.
  • USB Port: May be used for software or configuration updates.
  • Clock Input Port: Port type is MCX connector, 2-5.5V, 50 ohm termination.

Cabling the Modular Switch

4.10 Connecting Line Card Modules and Cables

Install required SFP, SFP+, QSFP+, QSFP100 and CFP2 optic modules in line card module ports (Figure 28: SFP or SFP+ ports). Figure 28: SFP or SFP+ ports Connect cables as required to line card module ports or fixed MPO ports. Supervisor and line card module ejectors on the front of the chassis assist with cable management. CAUTION : Excessive bending can damage interface cables, especially optical cables. Flexion excessive peut endommager les câbles d'interface, en particulier les câbles optiques. Note: You must ensure that any open slots for modules, power supplies, etc. are covered by the appropriate “blank” plates. Check with your local Arista Networks representative if you have questions.

Configuring the Modular Switch 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. 1. Provide power to the switch (Cabling the Modular Switch). 2. Connect the console port to a PC. 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: 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 1 localhost(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 11. 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:

  • Supervisor Module
  • Line Card Module Indicators
  • Fabric Status Indicators
  • Power Supply Status Indicators A.1 Supervisor Module While the front panel of each switch can house two supervisors, switch operations require only one. Supervisors display switch component status and contain Ethernet management and console ports. A.1.1 Supervisor Indicators: 7500E-SUP/7500-SUP2 The supervisor provides one serial console port, two Ethernet management ports, two USB ports, and one clock input port. Supervisor activity is reported by LEDs in the upper left corner. Four LEDs located left of the input ports report status of other switch components. Figure 29: Supervisor 7500E-SUP

Figure 30: Supervisor 7500-SUP 2 Figure 31: Supervisor 7500E-SUP Supervisor Activity Status LEDs The Status and Active LEDs are located on the left side of the Supervisor Module. Table 10: Supervisor Activity LED States interprets the states of these two LEDs. Table 10: Supervisor Activity LED States LED Name LED State Supervisor State Off No power, failed, or improperly inserted. Green Operating normally. Status Red Supervisor failed. Off Not active.Active Green Active and controlling the switch.

Component Activity Status LEDs LEDs located below the vents and left of the input ports display summary indicators for power supplies, fabric modules, fans, and line cards. Table 11: Component Activity LED States interprets the states of these indicators. When error conditions are indicated, refer to LEDs on the specified modules to determine the condition’s source. Table 11: Component Activity LED States LED Name LED State Module State Off No modules are present or powered. Green All powered modules are operating normally. Power Supply, Line Card Fabric Module Fans Red One or more components failed. A.2 Line Card Module Indicators Each line card module provides one status LED plus LEDs for each port on the card. The figures in Line Cards indicate the location of the LEDs on each line card. Figure 32: Line card Status LED

1 Status LED 4 QSFP port 2 LEDs

2 QSFP port 4 LEDs 5 QSFP port 1 LEDs

3 QSFP port 3 LEDs 6 10G / 40G /100G QSFP

Table 12: Line Card Status LED States interprets the states of the status LED. Table 12: Line Card Status LED States LED State Status Off Line card not inserted. Green Line card operating normally. Yellow Line card administratively shut down.

Red Line card has failed. The line card provides LEDs for each port module socket:

  • Each LED corresponds to a module.
  • A set of four LEDs correspond to each module. When the module is programmed as a 40G port, the first LED in the set reports status. When the module is programmed as four 10G or 100G ports, each port is assigned to an LED within the set. Table 13: Line Card Port LED States interprets the port LED states. Table 13: Line Card Port LED States LED State Status Off Port link is down. Green Port link is up. Yellow Port is disabled in software. A.3 Fabric Status Indicators Fabric Status LEDs are on fan-fabric modules. Rear Panel display the position of these LEDs on the rear of each switch. Figure 33: 7504N (left) and 7508N Fan Status and Fabric Status LEDs display fan status and fabric status LEDs on the switch. Note: Gen 1 Fabric modules are not supported. Figure 33: 7504N (left) and 7508N Fan Status and Fabric Status LEDs

1 Fan status LED 3 Fabric status LED

2 Fabric status LED 4 Fan status LED

Figure 34: 7512N (left) and 7516N Fan Status and Fabric Status LEDs

1 Fabric status LED

2 Fan status LED

Table 14: Fan Status and Fabric Status LEDs on Rear Panel interprets the states of the fan and fabric status LED. Table 14: Fan Status and Fabric Status LEDs on Rear Panel LED State Status Off Module inserted, but status is unknown. Green Module operating normally Red Module failed A.4 Power Supply Status Indicators

  • PWR-3KT-AC RED
  • PWR-2700-DC-R
  • PWR-3K-DC-RED The power supply LEDs are on the power supply modules.The position of the LEDs are on the rear of each switch. Figure 35: 7500N Power Supplies display all the power supply modules supported on the 7500N.

Figure 35: 7500N Power Supplies Note: The LEDs for the power supplies with three-LED status indicators are:

  • DC Good
  • Fault, and
  • Vin Good from top to bottom as shown above. Table 15: Power Supply Status LED States interprets the power supply setup for LED status indicators. Table 15: Power Supply Status LED States Power Supply State LED Name PWR-3KT-AC- Red PWR-2700-DC-R PWR-3K-DC- Red Input power present Normal Operation DC Good Fault Vin Good Green Off Green Green Off Green Green Input power present Main output off DC Good Fault Vin Good Off Off Green Off Off Green Blinking Green Input power present Power Supply Fault DC Good Fault Vin Good Off Blinking Amber Green Off Blinking Amber Green Blinking Amber, 1 sec on, 1 sec off No Input Power Supply installed in chassis DC Good Fault Vin Good Off Off Off Off Off Off Off Input power present Supply not seated in chassis DC Good Fault Vin Good Off Off Blinking Green Off Off Off Blinking Amber, 0.5 sec on/off

The following topics are covered in this section:

  • Parts Used in All Rack Mount Configurations
  • Two-Post Rack Mount Parts
  • Four-Post Rack Mount Parts for 4-slot and 8-slot Chassis
  • Four Post Rack Mount for 12-slot and 16-slot Chassis Each switch has an accessory kit that contains parts required to install the switch. Table 16: Accessory Kits for the Modular Switches provides further details on the accessory kit for each switch. The following sections in the chapter list the installation parts provided by the accessory kit in more detail. Table 16: Accessory Kits for the Modular Switches 7504N 7508N 7512N 7516N Common cables and accessories Included Included Included Included Two-Post rack mount parts Included Included N/A N/A Four-post rack mount kit for 4- slot and 8-slot chassis Included Included N/A N/A Four-post rack mount kit for 12- slot and 16-slot chassis N/A N/A Included Included Number of Power cords (C19 - C20 type) included 4 6 8 12 Important: All provided power cables are for use only with Arista products. Câbles d’alimentation doivent être utilisés uniquement avec des produits de Arista. Warning:

B.1 Parts Used in All Rack Mount Configurations B.1.1 Cables Table 17: Cables Provided in Accessory Kit Quantity Description

2 RJ-45 Patch Panel Cables, 2

2 RJ-45 to DB9 Adapter Cable,

B.1.2 Getting-Started Booklet One 2-page document B.2 Two-Post Rack Mount Parts The following sections list the parts provided for the two-post rack mount installation. Table 18: Two-Post Rack Mount Parts Quantity Description

2 Center-mount brackets

20 M4x8 pan-head Phillips

Figure 36: Two-Post Rack Mount Parts

1 Center-mount brackets

(DCS-7508N only) (DCS-7504N only)

3 M4x8 pan-head Phillips

B.3 Four-Post Rack Mount Parts for 4-slot and 8-slot Chassis The following sections list the parts provided in the accessory kit for four-post rack mount installations of the 4- and 8-slot chassis. Table 19: Four-Post Rack Mount Parts for the 4- and 8-slot Chassis Quantity 1 Description 2 Front brackets. 4 Shelf supports. 2 Back brackets. 1 Left shelf. 1 Right shelf. 11 (17) M6X16 pan-head Phillips screws.

7 (13) M6 Hex Nuts. 3 (9) M6 Cage Nut Square Hole Racks. 5 M5 Hex Nuts. 11 (17) M5 pan-head Phillips screws. 5 #12-24 Hex Nuts. 11 (17) #12-24 pan-head Phillips screws. 5 #10-32 Hex Nuts. 11 (17) #10-32 pan-head Phillips screws.

1 Adjustable Wrench

1 Quantities in parentheses “()” are for the 7508N where the quantities differ from the 7504N. Figure 37: Four-Post Rack Mount Parts for the 4-slot and 8-slot Chassis

1 Front brackets

(DCS-7504N only)

4 Left shelf 7 M6 hex nuts

2 Front brackets

(DCS-7508N only)

5 Right shelf 8 M6x16 pan-head Phillips

3 Shelf support 6 M6 cage nuts 9 Back brackets (not needed

holes)

B.4 Four Post Rack Mount for 12-slot and 16-slot Chassis The following sections list the parts provided in the accessory kit for four-post rack mount installations of the 12-slot and 16-slot chassis. Table 20: Four-Post Rack Mount Parts for the 12-slot and 16-slot Chassis Quantity Description

1 Shelf (or cradle)

1 Left shelf support

1 Right shelf support

25 M6 cage nuts square hole

25 M6X16 pan-head Phillips

25 M5X16mm pan-head Phillip

25 12-24X5/8 pan-head Phillip screws 27 10-32X5/8 pan-head Phillip screws

Figure 38: Four-Post rack mount parts for the 12-slot and 16-slot chassis

1 Cradle 4 #10-32X5/8 pan-head

7 M6 cage nuts (for square

hole racks)

2 Left telescoping arm 5 #12-24X5/8 pan-head

8 M6x16 pan-head Phillips

3 Right telescoping arm 6 M5X16mm pan-head

This appendix displays the front panel of all switches covered by this guide. Note: All devices are designed to fit in a 19” rack. Illustrations are not to scale. Figure 39: DCS-7504N Front Panel (fully populated)

1 Linecard ejector button3 Supervisor ejector button5 Ground

2 Linecard ejector handle4 Supervisor ejector handle

Figure 40: DCS-7508N Front Panel (fully populated)

Figure 41: DCS-7512N Front Panel (fully populated)

Figure 42: DCS-7516N Front Panel (fully populated)

This appendix displays the rear panel of all switches covered by this guide. Figure 43: DCS-7504N Rear Panel (fully populated)

1 Fabric module screw 4 Chassis ground 7 Ground

2 Fabric module ejector

5 PSU 8 Ejector button

3 Fabric module status

6 Release lever 9 Status LEDs

Figure 44: DCS-7508N rear panel (fully populated)

1 PSU bottom row (PS5) 6 Fabric module 11 Power cord clip (optional)

2 Power cord clip (optional)7 Fabric module ejector

12 Status LEDs (PS1)

3 Status LEDs (PS5) 8 Chassis ground

(secondary)

13 Ejector button

4 Ejector button 9 Fabric module status

14 Release lever

5 Release lever 10 PSU top row (PS1)

Figure 45: DCS-7512N Rear Panel (fully populated)

1 PSU bottom row (PS7) 6 Fabric module 11 Power cord clip (optional)

2 Power cord clip (optional) 7 Fabric module ejector

3 Status LEDs (PS7) 8 Chassis ground

(secondary)

Figure 46: DCS-7516N Rear Panel (fully populated)

1 Power domain 2 (PSU11-

PSU20)

4 Fabric module

5 Fabric module status

3 Chassis ground

(secondary)

6 Power domain 1 (PSU1-

PSU10)

This appendix displays the line cards supported by modular switches covered by this guide. DCS-7500E-36Q-LC The 36 port QSFP+ line card has 36 QSFP+ ports that allow for a high degree of flexibility in a mixed 10G/40G network. All QSFP+ ports can operate as either a single 40Gb Ethernet port or quad 10Gb Ethernet ports with up to 36 ports of 40G or 144 ports of high-density 10G.

1 Status LED 3 10G port LEDS

The 48 SFP+ and 2 port 100GbE MXP line card provides a flexible combination of 48 ports of SFP + and 2 MPO ports for up to 72 10Gb Ethernet ports. The two 100G MTP/MPO ports provide 100G capability using Arista Multi-speed Ports (MXP) with integrated optics. MXP ports use 100GBASE- SR10 (Short Range) transceivers and are fully compatible with any standards compliant 100GBASE- SR10 ports. Each MXP port can be easily configured as a single 100Gb, triple 40Gb or twelve 10Gb Ethernet.

1 Status LED 3 MXP port LEDS

The 48 port 1/10GbE SFP+ line card has 48 SFP+ ports. Having 48 ports of SFP+ ports allows this line card the flexibility to utilize any existing Arista SFP+ optic or direct attach cables, and to support both 1Gb and 10Gb speeds.

1 Status LED

The 12 x 100G MTP/MPO line card provides high density 100G using Arista Multi-speed Ports (MXP) with embedded optics. The MXP ports use 100GBASE-SR10 (Short Range) transceivers and are fully compatible with any standards compliant 100GBASE-SR10 ports. Each MXP port can be enabled in single 100Gb, triple 40Gb or twelve 10Gb Ethernet mode for up to 12 – 100Gb, 36 – 40Gb and 144 – 10Gb Ethernet ports per line card. Since each of MXP ports come with integrated optics, no external transceivers are required for this line card.

2 MXP port LEDS

The 6 x 100G CFP2 line card provides high performance 100G using industry standard CFP2 optics that are hot pluggable. The CFP2 form factor is designed to allow for long haul optics with a size that is approximately 50% smaller than the CFP optic. As a result CFP2 based line cards allow for up to 6 ports per line card, which increases overall system density. The CFP2 form factor allows 100GbE optics to be installed and with the use of 10x10 and 2x40 mode a choice of 10/40/100GbE.

2 CFP2 port LEDS

The 12 x 100G QSFP100 line card provides high density 100G using industry standard QSFP100 optics. The QSFP100 form factor is identical to the size of the 40G QSFP+ allowing for either 40GbE or 100GbE optics to be installed, for a dual speed choice of 40/100GbE on all ports. With 12 ports of

100GbE the card allows each port to operate in a choice of 4 x 10GbE (using 40GbE optics), 40GbE, or 100GbE. The 48 port RJ45 10GBASE-T wire-speed line card has 48 ports of RJ45 ports that supports 10Gb speeds. The 48 SFP+ and 2 port 100GbE QSFP line card provides a flexible combination of 48 ports of SFP + and 2 QSFP100 ports for up to 56 10Gb Ethernet ports. The two 100G QSFP100 ports allow for 1x 100G, 1x40G, or 4x10G capability.

1 Status LED 3 100G port LEDs

2 Port LEDS 4 100G port LEDs

The 36 ports QSFP100 line card allows for a high degree of flexibility in a mixed 10G/40G/100G environment. All 36 ports can operate as either a single 100Gb or 40Gb Ethernet port. A wide range of additional interface speed flexibility is possible, with all ports able to support 4 x 10G Ethernet, 4 x 25G Ethernet or 2 x 50G Ethernet. This flexibility allows for a choice of 5 speeds on all ports and allow for simple migration from 10G to 100G and a wide range of combinations.

2 Port LEDS

The 36 port QSFP+ line card allows for a wide range of flexibility in a mixed 10G/40G environment. All QSFP+ ports can operate as either a single 40Gb Ethernet port. Additional interface flexibility is possible, with up to 24 ports able to support 4x10G mode and 6 ports of 1x100G mode. These interface speed choices allow for simple migration from 10G to 100G and a wide range of possible combinations.

1 Status LED 3 100G ports

The 36 port QSFP100 line card allows 36 x 100G of wire rate performance with integrated MACsec on every port. Each Packet Processor connects to 6 ports of 100G with 4GB of deep packet buffer, the 100G ports support either QSFP100 (100G) or QSFP+ (40G). The 18 port QSFP100 line card allows 18 x 100G of wire rate performance.

The 36 port QSFP100 line card allows 36 x 100G of wire rate performance. The 36 port QSFP100 line card allows 36 x 100G of wire rate performance. The 36 port QSFP100 line card allows 36 x 100G of wire rate performance.

The 36 port QSFP100 line card allows 36 x 100G of wire rate performance. The 36 port QSFP100 line card allows 36 x 100G of wire rate performance. The line card has 2 x 100G ports and 12 x 25G ports. The 8 port tunable coherent DWDM with MACsec line card allows 200G of performance for long haul data.

2 CFP2 port

DCS-7500R3-36CQ-LC and DCS-7500R3K-36CQ-LC The line card can support up to 36 100G ports or 72 50G ports. The line card can support 24, wire speed 400G OSFP ports or up to 96 100G ports with breakout cables and optics. The line card can support 10G, 25G, and 50G speeds with optics or cables.

1 Status LED 3 400G ports

Maintenance and Field Replacement This appendix describes the process for replacing switch components. The following topics are covered in this section:

  • Power Supplies
  • Fabric and Fan Module (Fabric Module)
  • Touch Point Shield (Optional)
  • Supervisor Module
  • Linecards You must ensure that at least one of the secondary grounding pads located on the front panel of the chassis is connected to the data center ground. While working on the switches, use grounded, anti-static wrist straps connected to one of the attach points on the switch for grounding yourself and preventing ESD damage to the switch. Note: Illustrations in this appendix are examples for a representative switch and component(s). Procedures must be applied to component(s) supported by the specific device. You must use component(s) and the appropriate slots for those component(s) when replacing or adding them. F.1 Power Supplies The switches support AC or DC Power supplies. The switches ship with a number of populated slots depending on the switch model. Empty slots are covered with a blank. For adding a new power supply in one of the available slots, remove the blank covering the slot before inserting a new power supply.The following steps are required for ESD protection when adding or replacing power supplies. Note: For the exact locations of power supplies for your device, refer to Rear Panel. 1. Ensure that the switch is grounded. a. Connect at least one of the secondary grounding pads located on the front panel of the chassis to the data center ground as needed. 2. Ground yourself using a connected, anti-static wrist strap. a. The anti-static ESD wrist strap must be connected to one of the attach points on the switch. 3. Remove the power supply to be replaced (Removing AC Power Supply, Removing DC Power Supply) or the blank for the slot (Removing Fabric Module Blank) in which the new power supply is to be added. F.1.1 Removing Power Supply Blank The power supply blank is screwed on. Use the appropriate screwdriver for your switch. 1. Put on a grounded, anti-static ESD strap. 2. Unscrew the blank from the power supply slot you are going to populate. You may want to save the blank for future use as needed. The blank is needed for the switch to operate normally if a power supply slot is not populated.

F.1.2 Removing AC Power Supply Perform the following steps to remove an AC power supply. 1. Put on a grounded, anti-static ESD strap. 2. Lift the retaining clip up and unplug the cable (if present). Figure 47: Unseat Power Supply

1 Status LED 3 Ejector button

2 Release lever

  1. Pull the ejectors forward until the power supply disconnects. 4. Remove the power supply from the Switch using the power supply lever and handle. F.1.3 Installing AC Power Supply You must make space for installing the power supply by removing an existing one (Removing AC Power Supply, Removing DC Power Supply) or removing a blank (Removing Power Supply Blank) from a power supply slot available on the switch. Perform the following steps to install an AC power supply. 1. Put on a grounded, anti-static ESD strap. 2. Unpack the new power supply. 3. Insert the new power supply into the empty power supply slot. 4. After you insert the power supply, push gently on the power supply until the power supply is fully seated. 5. Pull up on the handle on the power supply to lock the power supply in place. 6. Connect the power cord to the power supply. 7. Fasten the spring-release clip to the power cord. 8. Connect to the power source. 9. Verify normal operation using the LED indicators for your switch Power Supply Status Indicators. F.1.4 Removing DC Power Supply Before performing any of the steps, ensure power is removed from DC circuits by turning off the power line servicing the circuits. Make sure to remove the ground connection last when removing power. 1. Put on a grounded, anti-static ESD strap. 2. Disconnect the power cable from the DC power source. 3. Loosen the two captive screws on the bottom of the adapter from the power supply module.

Maintenance and Field Replacement 4. Slide the cover out from the terminal studs. 5. Remove each power cable lug to the terminal studs with the flange locking nuts. 6. Remove the flange locking nuts to each of the terminal studs. 7. Remove the clear plastic cover protecting the terminal studs on the adapter. Slide the cover off of the adapter. 8. Disconnect the power cable lug from the terminal studs. F.1.5 Installing DC Power Supply You must make space for installing the power supply by removing an existing one (Removing AC Power Supply, Removing DC Power Supply) or removing a blank (Removing Power Supply Blank) from a power supply slot available on the switch. Perform the following steps to install a DC power supply. 1. Put on a grounded ESD strap. 2. Unbox the new power supply. 3. Insert the new power supply into the empty power supply slot. 4. After you insert the power supply, push gently on the power supply until the power supply is fully seated. 5. Pull up on the handle on the power supply to lock the power supply in place. 6. Connect the cables for your power supply as explained in the guide (Cabling the DC Power Supply). F.2 Fabric and Fan Module (Fabric Module) Note: For NEBS-compliant Service Provider installations, refer to Removing Service Provider 7500N Series Fan and Safety Guard. Contact your Arista representative if needed. The fabric and fan modules are hot-swappable. They are accessible from the rear of the switch (Rear Panel). You must take into account that the module you are inserting is compatible with the switch and the module that you are replacing. Perform the following steps to remove and replace a fabric and fan module, or a fan-only module, if your switch supports one. F.2.1 Removing Fabric Module Blank The fabric module blank is screwed on. Use the appropriate screwdriver for your switch. 1. Put on a grounded, anti-static ESD strap. 2. Unscrew the blank from the fabric module slot you are going to populate. You may want to save the blank for future use as needed. The blank is needed for the switch to operate normally if a fabric module slot is not populated. F.2.2 Removing Fabric Module 1. Put on a grounded, anti-static ESD strap. 2. Loosen the two Phillips screws on the fabric module. 3. Pull out the ejector handle on the fabric module. 4. Pull the ejector handles outwards by 90 degrees to disengage the fabric module. 5. Pull on the ejector handles to remove the fabric module from the slot. Note: Fabric modules can be heavier than 25 lbs. Provide adequate support while handling them to prevent injury or damage.

F.2.3 Installing Fabric Module You must make space for installing the module by removing an existing one (Removing Fabric Module) or removing a blank (Removing Fabric Module Blank) from a fabric module slot available on the switch. Perform the following steps to install the module. 1. Put on a grounded, anti-static ESD strap. 2. Unpack the module to be installed. 3. Open the ejector handles and carefully slide the module into the open slot. 4. Seat the module with the ejector handles open at 90 degrees. 5. Close the ejector handles. 6. Screw in the two Phillips screws. 7. Verify that the module is operating normally (Power Supply Status Indicators). 8. Use the show environment cooling command to further verify normal operation. F.2.4 Removing Service Provider 7500N Series Fan and Safety Guard ESD GROUNDING STRAP ADDITION This product must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. When installing or replacing this product, the ground connection must always be made first and disconnected last, and the person performing the task(s) must wear a grounded, ESD (anti-static) strap. On 7500 series products, you must replace the entire fabric module to replace a fan.

  • For the 7504 and 7508, unscrew the two Phillips screws on the back of the fabric module. Rotate the ejector handle(s) 90 degrees back to hard stops and pull the fabric module straight back to remove. Install the replacement fabric module by first opening the ejector handle(s), then aligning the module in its slot with the same orientation as the original, and sliding it into the slot in the same orientation as the one removed. When the module is seated, rotate the ejector handle(s) forward and fasten the Phillips screws.Do not overtighten Phillips screws.
  • For the 7512 the failed fan replacement requires the removal of the plastic safety guard in addition to the fabric module. First, in the CLI console, enter the global configuration mode by issuing the commands enable, then config, followed by env fan-speed override 100 to increase fan speeds. Wait five minutes for the system to sufficiently cool. Unscrew the six captive screws on the outside perimeter of the plastic safety guard. Set the safety guard aside. Fabric module removal and reinstallation procedure is the same as the 7504/7508 instructions above. Caution, the 7512R fabric module weighs more than 25lbs. Support module during handling. Reinstall plastic safety guard and fasten the six captive screws. Issue the env fan-speed auto command in the CLI console for normal operation. F.3 Touch Point Shield (Optional) F.3.1 Installing the Touch Point Shield The 7512N supports an optional Touch Point Shield component that is attached to the rear of the device. Perform the following steps to install the Touch Point Shield to the 7512N. 1. Attach the ground cable to the chassis. Note: The ground cable should be attached so that it exits upwards to enable access to the ESD port on the chassis. You may arc the ground cable downwards, if needed (Figure 48: Installing the Touch Point Shield (7512N)).

Maintenance and Field Replacement 2. Match the six screws on the Touch Point Shield to the holes on the chassis and screw in the Touch Point Shield). Figure 48: Installing the Touch Point Shield (7512N)

1 ESD port 3 Ground cable going up

2 Ground cable going down

F.4 Supervisor Module The supervisor modules are hot-swappable. They are accessible from the front of the switch. You must take into account that the module you are inserting is compatible with the switch and the module that you are replacing. Use the following procedure to remove and replace a supervisor module. For the supervisor module locations for your device, refer to Front Panel. F.4.1 Removing Supervisor Module Blank The fabric module blank is screwed on. Use the appropriate screwdriver for your switch. 1. Put on a grounded, anti-static ESD strap. 2. Unscrew the blank from the fabric module slot you are going to populate. You may want to save the blank for future use as needed. The blank is needed for the switch to operate normally if a fabric module slot is not populated. F.4.2 Removing Supervisor Module Perform the following steps to remove the module. 1. Put on a grounded ESD strap. 2. Pinch ejector buttons on handles or levers on each end of the supervisor card. 3. Spread the ejector buttons on the handles outwards. 4. Pull the supervisor module out by the ejector buttons on the handles of the supervisor card. 5. Slide supervisor module out of the slot.

F.4.3 Installing Supervisor Module You must make space for installing the module by removing an existing one (Removing Supervisor Module) or removing a blank (Removing Supervisor Module Blank) from a supervisor module slot available on the switch. Perform the following steps to install the module. 1. Put on a grounded, anti-static ESD strap. 2. Unpack the supervisor module to be installed. 3. Pinch ejector buttons on handles or levers on each end of the card. 4. Slide supervisor module into slot. 5. Spread ejector buttons on the handles. 6. Verify that the module is operating normally (Supervisor Module ). F.5 Linecards The linecards are hot-swappable. They are accessible from the front of the switch. You must take into account that the linecard you are inserting is compatible with the switch and the linecard that you are replacing. Use the following procedure to remove and replace a linecard. If you are adding a new linecard, remove the blank from the linecard slot and install the new linecard. For the linecard locations on your switch, refer to Front Panel. F.5.1 Removing Linecard Blank The linecard blank is screwed on. Use the appropriate screwdriver for your switch. 1. Put on a grounded, anti-static ESD strap. 2. Unscrew the blank from the linecard slot you are going to populate. You may want to save the blank for future use as needed. The blank is needed for the switch to operate normally if a linecard slot is not populated. F.5.2 Removing Linecard Perform the following steps to remove a linecard. 1. Put on a grounded, anti-static ESD strap. 2. Pinch ejector buttons on handles or levers on each end of the linecard. 3. Pull the linecard out by the ejector buttons on the handles of linecard. 4. Slide linecard out of the slot. F.5.3 Installing Linecard You must make space for installing the linecard by removing an existing one (Removing Linecard) or removing a blank (Removing Linecard Blank) from a linecard slot available on the switch. 1. Put on a grounded, anti-static ESD strap. 2. Unpack the linecard to be installed. 3. Pinch ejector buttons on handles or levers on each end of the linecard. 4. Spread ejector buttons on the handles. 5. Slide the linecard into the slot. 6. Push ejector buttons on the handles of the linecard. 7. Verify that the linecard is operating normally (Fabric Status Indicators).

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.