Arista 7800 Series User manual

Contents
Contents
Chapter 1: Overview................................................................................1
1.1 Scope......................................................................................................................................1
1.2 Receiving and Inspecting the Equipment...............................................................................1
1.3 Installation Process.................................................................................................................1
1.4 Safety Information...................................................................................................................2
1.5 Obtaining Technical Assistance..............................................................................................2
1.6 Specifications..........................................................................................................................3
Chapter 2: Preparation............................................................................7
2.1 Site Selection..........................................................................................................................7
2.2 Tools and Parts Required for Installation............................................................................... 8
2.3 Unpacking and Moving the Switch.........................................................................................9
2.3.1 Unpacking and Moving the Switch (Example)........................................................ 10
2.4 Electrostatic Discharge (ESD) Precautions..........................................................................13
Chapter 3: Rack Mounting the Switch................................................ 15
3.1 DCS-7804, DCS-7808, DCS-7812, and DCS-7816 Rack Mounting.....................................15
3.1.1 Inserting Rack Nuts Using the Template................................................................ 15
3.1.2 Inserting and Securing the Cradle Assembly......................................................... 16
3.1.3 Inserting the Switch into the Rack..........................................................................19
Chapter 4: Cabling the Modular Switch..............................................23
4.1 Cabling the Power Supplies................................................................................................. 23
4.2 Cabling Chassis Ground.......................................................................................................24
4.3 Cabling the AC Power Supplies........................................................................................... 28
4.4 Cabling the DC Power Supply..............................................................................................29
4.4.1 DC Power Supplies.................................................................................................29
4.4.2 Wire and Lug Preparation.......................................................................................30
4.5 Power Supply Specifications................................................................................................ 30
4.6 Power Supply Configurations................................................................................................31
4.6.1 Recommendations for Power Supply Usage.......................................................... 31
4.7 Power Supply Redundancy.................................................................................................. 32
4.8 Connecting Supervisor Cables.............................................................................................32
4.9 Connecting Line Card Modules and Cables.........................................................................35
Chapter 5: Configuring the Modular Switch.......................................37
Appendix A: Status Indicators.............................................................39
A.1 Supervisor Module............................................................................................................... 39
A.1.1 System Level Status Indicator LEDs: DCS-7800-SUP-D....................................... 39
A.2 Line Card Module Indicators................................................................................................41
A.3 Fabric Module Status Indicators.......................................................................................... 42
A.4 Power Supply Status Indicators........................................................................................... 44
A.4.1 PWR-D1-3041-AC-BLUE........................................................................................44
iii

A.4.2 PWR-D2-3041-DC-BLUE........................................................................................45
Appendix B: Parts List..........................................................................47
B.1 Parts Used in All Rack Mount Configurations......................................................................48
B.1.1 Cables.....................................................................................................................48
B.1.2 Getting-Started Booklet.......................................................................................... 48
B.2 Four-Post Rack Mount Parts................................................................................................48
Appendix C: Front Panel...................................................................... 51
Appendix D: Rear Panel....................................................................... 55
Appendix E: Line Cards........................................................................59
Appendix F: Maintenance and Field Replacement............................ 61
F.1 Line Card and Supervisor Extraction Tools.......................................................................... 61
F.1.1 Assembling and Storing the Extraction Tools..........................................................62
F.2 Power Supplies..................................................................................................................... 62
F.2.1 Removing AC Power Supply...................................................................................62
F.2.2 Installing AC Power Supply.....................................................................................63
F.2.3 Removing DC Power Supply...................................................................................63
F.2.4 Installing DC Power Supply.....................................................................................63
F.2.5 Removing Power Supply Blank...............................................................................63
F.3 Fabric and Fan Module (Fabric Module)...............................................................................64
F.3.1 Removing Fabric Module........................................................................................ 64
F.3.2 Installing Fabric Module.......................................................................................... 65
F.4 Fan Module (within Fabric Module)...................................................................................... 67
F.5 Supervisor Module................................................................................................................ 68
F.5.1 Removing Supervisor Module................................................................................. 68
F.5.2 Installing Supervisor Module...................................................................................68
F.5.3 Removing Supervisor Module Blank.......................................................................69
F.6 Line Cards.............................................................................................................................69
F.6.1 Removing Line Card............................................................................................... 69
F.6.2 Installing Line Card................................................................................................. 69
F.6.3 Removing Line Card Blank..................................................................................... 69
Appendix G: Regulatory Model Numbers...........................................71
Appendix H: Taiwan RoHS Information..............................................73
iv

Chapter 1
Overview
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-7804
• DCS-7808
• DCS-7812
• DCS-7816
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 DCS-7800 Series Modular Switches purchase order. Parts List provides a list of components
included with the switch.
1.3 Installation Process
Perform the following steps to install and use the switch:
1. Select and prepare the installation site (Site Selection).
2. Assemble the installation tools listed (Tools and Parts Required for Installation).
3. Attach the mounting brackets and install the switch in an equipment rack (Rack Mounting the
Switch).
4. Connect the switch to the power source and network devices (Cabling the Switch).
5. Configure the switch (Configuring the Switch).
1

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. 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:suppor[email protected]. This is the easiest way to create a new service request.
Include a detailed description of the problem and the output of “show tech-support”.
•Web:https://www.arista.com/en/support.
A support case may be created through the support portal on our website. You may also download
the most current software and documentation, as well as view FAQs, Knowledge Base articles,
Security Advisories, and Field Notices.
•Phone: [phone] or [phone].
Important: No user serviceable parts inside. Refer all servicing to qualified service personnel.
Aucune pièce réparable par l'utilisateur à l'intérieur. Confiez toute réparation à un technicien
qualifié.
2

Overview
1.6 Specifications
The Table 1: Modular Switch Specifications lists the specifications of Arista Data Center modular
switches covered by this guide.
Table 1: Modular Switch Specifications
DCS-7804 DCS-7808 DCS-7812 DCS-7816
Height 10 RU: 439 mm
(17.28 inches)
16 RU: 702 mm
(27.64 inches)
23 RU: 1012 mm
(39.84 inches)
32 RU: 1422 mm
(55.98 inches)
Width 441 mm (17.36
inches) maximum
441 mm (17.36
inches) maximum
441 mm (17.36
inches) maximum
441 mm (17.36
inches) maximum
Depth 940 mm (37.01
inches)
940 mm (37.01
inches)
940 mm (37.01
inches)
1004 mm (39.52
inches)
Weight 209.1 kg (460
lbs) fully loaded
338.6 kg (745
lbs) fully loaded
512.3 kg (1127
lbs) fully loaded
763.6 kg (1680
lbs) fully loaded
DC Input (per
PSU) 2x -48 to -60 V DC
70 A to 55 A
2x -48 to -60 V
DC
70 A to 55 A
2x -48 to -60 V
DC
70 A to 55 A
2x -48 to -60 V
DC
70 A to 55 A
DC Branch
Circuit
Protection
2x 90 A 2x 90 A 2x 90 A 2x 90 A
AC Input
Voltage (per
PSU)
2x 200-240 V 2x 200-240 V 2x 200-240 V 2x 200-240 V
AC Branch
Circuit
Protection
2x 20 A 2x 20 A 2x 20 A 2x 20 A
Input Power
Circuits 6 to 8 circuits(1) 8 to 12 circuits(2) 10 to 18 circuits(3) 24 to 48 circuits(4)
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: 7800
Series Power
Specifications
See Power draw
configurations
in Table 2: 7800
Series Power
Specifications
See Power draw
configurations
in Table 2: 7800
Series Power
Specifications
See Power draw
configurations
in Table 2: 7800
Series Power
Specifications
1. For non-redundant power feeds, 12 to 16 for redundant power feeds.
3

2. For non-redundant power feeds, 16 to 24 for redundant power feeds.
3. For non-redundant power feeds, TBD for redundant power feeds.
4. For non-redundant power feeds, 24 to 48 for redundant power feeds.
The Table 2: 7800 Series Power Specifications lists power specifications of modular switch
components.
Table 2: 7800 Series Power Specifications
Module Type Part Number Power Draw (Typical /
Maximum)
Supervisor Modules DCS-7800-SUP
DCS-7800-SUP1A
DCS-7800-SUP1S
DCS-7816-SUP1A
DCS-7816-SUP1S
61 W / 72 W
61 W / 72 W
61 W / 72 W
71 W / 78 W
71 W / 78 W
Line Card Modules DCS-7800R3-48CQ
DCS-7800R3K-48CQ
DCS-7800R3K-72Y
DCS-7800R3-48CQM
DCS-7800R3-48CQ2
DCS-7800R3-48CQM2
DCS-7800R3-48CQMS
DCS-7800R3-36P
DCS-7800R3A-36P
DCS-7800R3A-36PM
DCS-7800R3AK-36PM
DCS-7800R3-36D
DCS-7800R3A-36D
DCS-7800R3A-36DM
DCS-7800R3AK-36DM
DCS-7800R3K-36DM
DCS-7800R3A-36D2
DCS-7800R3A-36DM2
DCS-7800R3AK-36DM2
398 W / 462 W
398 W / 462 W
142 W / 178 W
620 W / 684 W
474 W / 622 W
511 W / 696 W
501 W / 666 W
825 W / 1136 W
533 W / 749 W
548 W / 764 W
578 W / 794 W
839 W / 1149 W
533 W / 749 W
548 W / 764 W
578 W / 794 W
1416 W / 1823 W
563 W / 779 W
578 W / 794 W
608 W / 824 W
4

Overview
Fabric Modules DCS-7804R3-FM
DCS-7808R3-FM
DCS-7808R3-FM2
DCS-7812R3-FM
DCS-7816R3-FM
180 W / 248 W
510 W / 778 W
370 W / 518 W
681 W / 917 W
510 W / 778 W
Power Supply (AC) PWR-D1-3041-AC-BLUE 3 W / 10 W(1)
Power Supply (DC) PWR-D2-3041-DC-BLUE 3 W / 10 W(1)
7804 Series System Full chassis loaded with:
2 DCS-7800-SUP1A
6 DCS-7804R3-FM
4 DCS-7800R3-48CQ
6 PWR-D1-3041-AC-BLUE
3310 W / 4397 W
7808 Series System Full chassis loaded with:
2 DCS-7800-SUP1A
6 DCS-7808R3-FM
8 DCS-7800R3-48CQ
8 PWR-D1-3041-AC-BLUE
6390 W / 8540 W
7812 Series System Full chassis loaded with:
2 DCS-7816-SUP1A
6 DCS-7812R3-FM
12 DCS-7800R3-48CQ2
10 PWR-D1-3041-AC-BLUE
12490 W / 14788 W
7816 Series System Full chassis loaded with:
2 DCS-7816-SUP1A
12 DCS-7816R3-FM
16 DCS-7800R3-48CQ
24 PWR-D1-3041-AC-BLUE
12881 W / 17150 W
1With no input power.
Note 1 Includes typical power supply conversion inefficiency. Contact your local Sales Engineer for 7800 power calculator details.
Note 2 Power numbers given as Typical/Maximum or Typical/Hot/Maximum where Hot is defined as 40°C Sea Level.
*Not N+N redundant power at worst case Temp/Elevation.
5

6

Chapter 2
Preparation
The following topics are covered in this section:
•Site Selection
•Tools and Parts Required for Installation
•Unpacking and Moving the Switch
•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.
The 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
The 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
ABC
DCS-7804 38.4 cm (15.1 in.) 102.1 cm (40.2 in.) 58.9 cm (23.2 in.)
DCS-7808 38.4 cm (15.1 in.) 102.1 cm (40.2 in.) 58.9 cm (23.2 in.)
DCS-7812 38.4 cm (15.1 in.) 102.1 cm (40.2 in.) 58.9 cm (23.2 in.)
DCS-7816 38.4 cm (15.1 in.) 102.1 cm (40.2 in.) 58.9 cm (23.2 in.)
7

Note: The PSU removal clearance (Front) is 62.5 cm (24.6 in.)
•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: The 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-7804 No Yes 10
DCS-7808 No Yes 16
DCS-7812 No Yes 23
DCS-7816 No Yes 32
Note: The accessory kit provides the required mounting hardware for each switch.
•Power Requirements: Arista switches require a minimum number of operating power supplies in all
chassis, AC or DC, and for each power domain of switches with multiple power domains. Refer to
Cabling the Power Supplies for more details regarding your switch.
Important: DC cables should be protected with circuit over-current 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. Ensure 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)
8

Preparation
• #2 Phillips head screwdriver
Note: Switches come with a template to assist with the rack mounting
Rack Mount
The 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
DCS-7804 21(3) 21(3) 4-post installation
DCS-7808 21(3) 21(3) 4-post installation
DCS-7812 27(3) 27(3) 4-post installation
DCS-7816 35(3) 35(3) 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.
3These are in addition to the rack-mount kit screws required for the cradle.
2.3 Unpacking and Moving the Switch
The DCS-7816 accessory kit includes bolts and lifting brackets (Figure 2: Lifting Brackets) that must
be attached to the top of the chassis with the bolts supplied for lifting the chassis from the pallet onto
the transport lift. You can use any appropriate lifting mechanism/tool to unload the switch. A platform lift
is recommended for transportation and installation of the switch. The rack mounting cradle is shipped
nested upside down over the top of the chassis for all switches (Figure 3: Cradle and Switch). There is
a protective film on the top and sides to keep the cradle from scratching the chassis during transport.
9

Note: The DCS-7812 accessory kit includes bolts and lifting brackets that must be similarly
attached. The illustrations highlight the DCS-7816.
Figure 2: Lifting Brackets
Figure 3: Cradle and Switch
2.3.1 Unpacking and Moving the Switch (Example)
The example illustrates the de-palletizing and transportation of a DCS-7816 chassis using the
following:
• 1000 lb lifting straps
• Server Lift SL-1000X® Super-Duty Lift
• 1000 lb capacity
• Battery operated and motorized
• Integrated rollers with lockout
The DCS-7816 chassis ships on an engineered pallet as shown below.
10

Preparation
1. Cut away the straps and remove the cardboard to expose the chassis with the rack kit basket
attached and nested on top of the chassis.
2. From the accessory kit shipped with the chassis, remove and attach the lifting brackets to the top of
the chassis.
3. Attach the 1000 lb lifting straps to the lifting brackets on the chassis, and the loops through the
prongs of the lift.
11

4. Place the chassis on the transport lift (Server Lift SL-1000X® Super-Duty Lift) with the lift platen in
the neutral position and the chassis aligned for moving into the rack.
Note: Populate the chassis with line-cards and fabric modules only after insertion into the
rack.
5. Align and move the chassis into the rack using the translatable platen.
Note: Use the built-in, foot-pedal actuated lock to secure lift while sliding the chassis into
rack.
Note: Before moving the chassis into the rack, you must attach the cradle to the rack
(DCS-7804, DCS-7808, DCS-7812, and DCS-7816 Rack Mounting).
12

Preparation
2.4 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.
13

14

Chapter 3
Rack Mounting the Switch
The following topics are covered in this section:
•DCS-7804, DCS-7808, DCS-7812, and DCS-7816 Rack Mounting
•Inserting Rack Nuts Using the Template
•Inserting and Securing the Cradle Assembly
•Inserting the Switch into the Rack
3.1 DCS-7804, DCS-7808, DCS-7812, and DCS-7816 Rack Mounting
The accessory kit provides components for installing the switch in four-post racks. The accessory kit
includes the following four-post mounting parts:
• Cradle assembly
• M6 pan-head Phillips screws
• M6 rack cage nuts (optional)
• Template for non-threaded racks requiring rack nuts
Note: Two-post rack mount is not supported.
Illustrations in this chapter depict the mounting of an unpopulated 8-slot chassis.
After completing the instructions for your rack type, proceed to Cabling the Power Supplies .
Rack mounting the switch in a four-post rack requires the following tasks:
• Inserting rack nuts (for racks requiring them) at appropriate locations. (Inserting Rack Nuts Using
the Template).
• Inserting and securing the cradle assembly into the rack (Inserting and Securing the Cradle
Assembly).
• Inserting the switch into the rack (Inserting the Switch into the Rack).
3.1.1 Inserting Rack Nuts Using the Template
Note: Required only for non-threaded racks that use rack nuts. Installation is referenced with
the bottom screw located at 1RU location. For a different starting point for the bottom screw,
always start at an RU location, and ensure there is enough room for your device in the rack.
1. Attach the template supplied with your switch to the front left post such that the top and bottom
locations for the rack nuts line up with RU locations required by your device.
2. Insert rack-mount nuts required by the switch (Table 6: Rack Mount Locations and Screws Required
by Switch 1) at the locations identified by the Figure 4: Rack Nut Locations using the template.
Note: The number of rack nuts required for the front left and the front right rack posts are
different. The rear posts require the same number (4 each).
15

Figure 4: Rack Nut Locations
1 Mounting location A Front (Left and Right) 4 Mounting location D Front (Left and Right)
2 Mounting location B Front (Left and Right) 5 Mounting location Rear (Left and Right)
3 Mounting location C Front (Left and Right)
Table 6: Rack Mount Locations and Screws Required by Switch 1
DCS-7804 DCS 7808 DCS-7812 DCS-7816Mounting
Location Front (L) Front (R) Front (L) Front (R) Front (L) Front (R) Front (L) Front (R)
A55555555
BN/A N/A N/A N/A 3 3 4 4
CN/A N/A N/A N/A N/A N/A 2 3
D12121222
1. Rear post locations are indicated by the template and are used for securing the cradle.
3. Move the template to the right front post and repeat Step 2, taking care that the top and bottom rack
nut locations are aligned with the left front post.
4. Move the template to the rear posts one at a time, and insert rack nuts at the locations indicated by
the template.
5. Proceed to Inserting and securing the cradle assembly into the rack (Inserting and Securing the
Cradle Assembly) once rack nuts have been inserted in all the posts.
3.1.2 Inserting and Securing the Cradle Assembly
To insert and secure the cradle assembly to the rack use the following steps.
Note: The rack mounting cradle is shipped nested upside down over the top of the chassis for
all switches. There is a protective film on the top and sides to keep the cradle from scratching
the chassis during transport.
16