Each switch provides an accessory kit containing the parts required to install the switch into a four-post rack. Two-post rack mount parts are available through your sales representative. The following sections list the installation parts provided by the accessory kit.
Parts Used in All Configurations
Quantity
Description
One for each AC power supply module supplied with a switch.
Power cables: 14 AWG, C19-C20.
One for each DC power supply module supplied with a switch.
DC Adapter (Arista part number CON-00581; part number G10TBL2021100211HR; Figure 1 - DC Adapter), Terminal Block, M4 Lug.
One
RJ-45 Patch Panel Cable, 2 meters.
One
RJ-45 to DB9 Adapter Cable, 2 meters.
Warning: All provided power cables are for use only with Arista products.
Câbles d’alimentation doivent être utilisés uniquement avec des produits de Arista.
Warning:
Figure 1. DC Adapter
Four-Post Rack Mount Parts
Quantity
Description
2
Mounting Ears
1
Left shelf
1
Right shelf
Figure 2. Four-Post Rack Mount Parts
1
Left shelf
2
Right shelf
3
Mounting ears
Four-Post Rack Mount Kit (Optional - 106-575-074-00)
Part Number
Quantity
Description
Rack Type
036-030-014
18
M610 clip nuts
Round hole
036-023-025
18
M6 cage nuts
Square hole
036-020-051
18
12-24 x .50 screws
Threaded hole
106002508
18
M6 x .50 screws
Square, round, and threaded hole
036-701-148
18
10-32 x .50 screws
Threaded hole
Two-Post Rack Mount Parts
Two-post rack mount parts for DCS-7304 and DCS-7308 switches are available through your sales representative. Two-post rack mounts are not supported for DCS-7316 switches.
Each switch has four rear slots for fabric modules. In addition to providing the data transport media, fabric modules contain fan modules that circulate air through the switch. Proper switch operation requires the population of each rear slot.
Switches are configured for maximum traffic capacity and contain a fabric module in each rear slot. In network configurations that do not require maximum traffic capacity, an economical alternative is to replace two fabric modules with fan-only modules.
Each fan-only module provides the cooling capacity of the corresponding fabric module through a set of fans integrated into the module. The fans of a fan-only module are not removable, unlike the fabric module that requires the insertion of individual fan modules.
Fan-only modules are available for the 7304 and 7308 switches. Fabric and Fan Modules: Extracted-left displays a 7304 fabric module and a 7304 fan-only module that is removed from the switch. Fabric and Fan Modules: Installed-right displays the rear panel of a 7304 switch that contains two fabric modules and two fan-only modules.
Figure 1. Fabric and Fan-only Modules: Extracted (left) and Installed (right)
Each module includes lock levers that secure it to the chassis. The module and the lock levers are easily damaged by improperly removing, inserting, or handling the fabric module. Never use the lock levers to lift or move the module after it is removed from the chassis.
Figure 2 - Locking Mechanism: DCS-7316 Fabric depicts a DCS-7316 chassis with the inner two fabric modules installed. Lock levers are shown in the open and closed position, along with the button that releases them into the open position. The lock levers are in the closed position when the switch is in service.
Figure 2. Locking Mechanism: DCS-7316 Fabric
1
Lock levers open (FM2)
3
Release button (FM3)
2
Upper lock lever closed (FM3)
4
Lower lock lever closed (FM3)
These sections describe fabric module handling procedures. Illustrations depict a DCS-7316 chassis and fabric modules. While proper handling of DCS-7316 components is imperative because of their size and weight, the instructions also describe best practices for handling DCS-7304 and DCS-7308 components.
Removing Fabric Modules
Note: While removing and replacing a fabric module in a gen3 chassis (7304X3, 7308X3), issue a command to offload traffic before removing the module to avoid potential traffic loss.
This procedure removes a fabric from the switch chassis.
Grasp the module frame and pull it until it is completely outside the chassis.
Figure 3. Fabric Module Removal: Initial Position and Opening the Lock-Levers
Figure 4. Fabric Module Removal: Edging the Module Out and Closing the Lock-Levers
The DCS-7316 fabric module is almost three feet long and weighs close to 40 pounds. Use necessary precautions to safely manage the component outside of the chassis.
Inserting Fabric Modules
The fabric module insertion process is the inverse of the removal procedure. These instructions describe the method of inserting the fabric module into a chassis.
Grasping the module by its frame, place the module chassis railing that corresponds to the slot where it is to be placed. The lock levers should be in the closed position.
Slide the module into the chassis until it’s within three to four inches of being fully inserted (Fabric Module-right).
Press the Release Button to release the lock levers into the open position (Fabric Module-left).
Continue inserting the module into the chassis. If other fabric modules are in the chassis, the module being installed should be in the same relative position (Fabric Module-right).
Return the lock levers to the closed position, securing the module to the chassis (Fabric Module-left).
Handling Fan-only Modules
DCS-7304 Fabric and Fan-only Module (left) depicts a DCS-7304 chassis with installed fabric modules (slots 1 and 2) and fan-only modules (slots 3 and 4). Lock levers are shown in the open (slot 3) and closed (slot 4) position DCS-7304 Fan-only Module (right) displays the position of the lock lever release screw (below the extended handles).
The fan direction indicator is located below the top handle. Refer to Site Selection for airflow configuration requirements.
The following configuration is mandatory when fan-only modules are installed:
Slots 1 and 2 contain fabric modules.
Slots 3 and 4 contain fan-only modules.
Figure 5. DCS-7304 Fabric and Fan-only Module (left); DCS-7304 Fan-only Module (right)
1
Lock lever release screw
2
Fan airflow direction (color indicates airflow direction)
3
Lock lever release screw
Removing Fan-only Modules
This procedure describes the proper method for removing fan-only modules from the switch:
Release the lock levers from the module frame by rotating each handle’s release screw counter-clockwise (DCS-7304 Fan-only Module (right)).
Use the lock levers to pull the module three to four inches from the installed position.
Return the lock levers to the closed position.
Grasp the module frame and pull the module until it is completely outside of the chassis.
Inserting Fan-only Modules
The fabric module insertion process is the inverse of the removal procedure. These instructions describe the method of inserting the fabric module into a chassis.
Grasping the module by its frame, place the chassis railing corresponding to the slot where it is to be placed. The lock levers should be in the closed position.
Slide the module into the chassis until it is within three to four inches of being fully inserted.
Extend the lock levers towards the top and bottom of the chassis.
Continue inserting the module into the chassis.
Return the lock levers to the closed position, securing the module to the chassis.
Secure each lock lever handle to the module by inserting the release screw into the module body and rotating clockwise.
This section discusses the several status indicators, their location, and the meaning of their display status.
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.
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 lower left corner. Four LEDs located right of these LEDs report status of other switch components. Figure 1 - Supervisor Module (DCS-7300(-D)-SUP) displays the Supervisor Module.
LEDs located below the vents and left of the input ports display summary indicators for power supplies, fabric modules, fan modules, and line cards. Table 2 - 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 2. Component Activity LED States
LED Name
LED State
Module State
Power Supply Line Card Fabric Module
Off
No modules are present or powered.
Green
All powered modules are operating normally.
Red
At least one module has failed.
Fan Modules
Off
Module not inserted.
Amber
At least one fan is missing or has failed.
Green
All modules are operating normally.
Red
There are insufficient functional fans installed in the switch.
Linecard Module Indicators
Each linecard module provides one status LED plus LEDs for each port on the card.
The figures in Linecards indicate the location of the LEDs on each linecard. Figure A-2-left displays the status LED and Port LEDs on the left side of the DCS-7300X-64S-LC linecard. Figure A-2-right displays the status LED and Port LEDs on the left side of the DCS-7300X-32Q-LC linecard.
Figure 2. Linecard Status LEDs (DCS-7300X-LC)
1
Status LED
2
Upper port status LED
3
Lower port status LED
Figure 3. Linecard Status LEDs (DCS-7300X-32Q-LC)
1
Status LED
2
10G/40G QSFP Port LEDs
3
QSFP 1
4
QSFP 2
5
QSFP 3
6
QSFP 4
The Linecard Status LED is in the top left corner of the DCS-7300X Linecard. Table 3 - Linecard Status LED States interprets the states of the Status LED.
Table 3. Linecard Status LED States
LED State
Status
Off
Linecard not inserted.
Green
Linecard is operating normally.
Yellow
Linecard administratively shut down.
Red
Module has failed.
The linecard provides LEDs for each port module socket:
Figure 3 - Linecard Status LEDs (DCS-7300X-32Q-LC) display QSFP module LEDs. A set of four LEDs correspond to each module. The first LED in the set reports status when the module is programmed as a 40G port. When the module is programmed as four 10G ports, each port is assigned to an LED within the set.
You can access the fan and fabric modules from the rear panel. Fabric modules are inserted into the switch, and fan modules are inserted into the fabric modules.
Each switch contains four fabric modules; the fan module capacity varies by switch model, as displayed in Table 5 - Fan Module Capacity.
The fan and fabric module indicators are displayed in the Figure 4 - Fan Status and Fabric Status LEDs. The fan handle indicates the fan direction. All fan modules must have the same color handle.
Figure 4. Fan Status and Fabric Status LEDs
1
Handle (color indicates airflow orientation)
3
Fan module installation indicator
2
Fabric status LED
4
Fan module status LED
The fan module installation indicator is green when the fan module is properly installed or red when the module is not fully installed. The Table 6 - Fan and Fabric Status LED States table interprets the states of the Fan and Fabric Status LEDs.
Table 6. Fan and Fabric Status LED States
LED State
Status
Off
The module is inserted but not receiving power – it may not be properly seated.
Green
The module is operating normally.
Red
The module has failed.
Power Supply Status Indicators
Power Supply LEDs are on power supply modules. The front panel contains power supply modules for all switches; the DCS-7316 rear panel may also contain power supply modules.
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) that is accessible only through the console port because it has no password.
When bypassing ZTP, initial switch access requires logging in as admin, with no password, through the console port. Then, you can configure an admin password and other password-protected usernames.
This manual configuration procedure cancels ZTP mode, logs into the switch, assigns a password to admin, assigns an IP address to the management port, and defines a default route to a network gateway.
As the switch boots without a startup-config file, it displays this message 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:
Log into the switch by typing admin at the login prompt.
localhost login: admin
Cancel ZTP mode by typing zerotouch cancel.
Important: This step initiates a switch reboot.
localhost> zerotouch cancel
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
Enter global configuration mode.
localhost>enable
localhost# config
Assign a password to the admin username using the username secret command.
localhost(config)# username admin secret pxq123
Configure a default route to the network gateway.
localhost(config)# ip route 0.0.0.0/0 192.0.2.1
Assign an IP address (192.0.2.8/24 in this example) to an Ethernet management port.
localhost(config)# interface management 1/1
localhost(config-if-Ma1/1)# ip address 192.0.2.8/24
Save the configuration by typing write memory or copy running-config startup-config.
localhost# copy running-config startup-config
When the management port IP address is configured, use this command to access the switch from a host using the address configured in Step 9:
ssh admin@192.0.2.8
Refer to the Arista Networks User Manual for complete switch configuration information.
Supervisor modules contain console, management, and USB ports. Figure 1 - Supervisor Ports (DCS-7300(-D)-SUP) displays status LED and port locations on the 7300 Series Modular switch supervisor.
Figure 1. Supervisor Ports (DCS-7300(-D)-SUP)
1
Status LED
5
Fabric module status LED
9
Ethernet management port
2
Active LED
6
Fan module status LED
10
USB ports
3
Power supply status LED
7
Console serial port
11
Clock input port
4
Line card status LED
8
Ethernet management port
12
Release lever
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
Ethernet Management Port: Connect to 10/100/1000 management network with RJ-45 cable.
USB Port: This may be used for software or configuration updates.
Clock Input Port: The port type is MCX connector, 2-5.5V, 50 ohm termination.
The rack mounting procedure is identical for all modular switches. Illustrations in this chapter depict the mounting of an unpopulated DCS-7304 chassis.
Les procédure de montage du bâti est identique pour tous les commutateurs modulaires. Illustrations dans ce chapitre montrent le montage d’un châssis de DCS-7304 inhabité.
Two-Post Rack Mount provides instructions for mounting the switch in a two-post rack.
Four-Post Rack Mount provides instructions for mounting the switch in a four-post rack.
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.
Important:
Two-post rack mount parts are only available through your sales representative. Two-post rack mounting is not supported for DCS-7316 switches.
Pièces de montage rack à deux montants sont uniquement disponibles par l’intermédiaire de votre représentant des ventes. Montage en rack de deux-poteau n’est pas supporté pour les commutateurs DCS-7316.
The accessory kit includes the following two-post mounting parts:
2 center-mount brackets.
16 (DCS-7304) or 20 (DCS-7308) M4x8 panhead Phillips screws.
Position the flanges that attach to the rack posts toward the front of the chassis.
Attach both center-mount brackets to the chassis with the provided M4x8 panhead Phillips screws. Secure the bracket by attaching screws through each bracket hole.
Inserting the Switch into the Rack
Rotate the stabilizer bar from the left shelf toward the right shelf such that the nob at the end of the stabilizer bar inserts into the notch at the rear of the ledge of the right shelf.
Figure 2. Both Switch Shelves Installed
Move the chassis to the rack using a mechanical lift (Figure 3 - Lifting the Switch ChassisLifting the Switch Chassis). If modules are inserted in the chassis, use the lift carefully to avoid damaging any components.
Figure 3. Lifting the Switch Chassis
Lift the chassis into the rack.
Secure the chassis by tightening the six thumbscrews on the front flanges into the rack posts.
Note: Components are designed for tool-less installation in square-hole racks. To install the switch in round hole or threaded hole racks, remove all rack plugs from the rail kit, if required (described below), and attach all components with nuts and bolts that fit the rack.
Note: The parts list for rack kit installations for round and threaded hole racks are listed in the Parts List.
Shelves
The two shelves are almost identical, differing in that 1) they are mirror images of each other and 2) the left shelf includes a stabilizer bar. Each shelf has a two-piece mechanism. The base includes the surface upon which the switch is placed and is oriented towards the front of the rack. The slide-end adjusts the shelf’s length to fit the shelf between the front and rear posts of various size racks.
The Figure 5 - Left Shelf – Inner View displays the inner view of the left shelf. Depending on the rack kit ordered, each shelf may include latches to the locking mechanism that secures the shelf to the rack. If the locking mechanism is not present, the kit shall be attached with appropriate screws (not included). Figure 5 - Left Shelf – Inner View displays latches that are closed. The insets display open latches The inner side of each shelf is oriented toward the center of the rack.
Figure 5. Left Shelf – Inner View
1
Front post attachments
4
Rear post attachments
7
Stabilizer bar (left shelf only)
2
Front latch (closed)
5
Slide-end
8
Front latch (open)
3
Rear latch (closed)
6
Base
9
Rear latch (open)
Figure 6 - Right Shelf – Outer View displays the outside view of the right shelf, from where rack plugs and guide pins that insert into rack posts are visible (Insets A and B). To install shelves into posts with threaded or rounded holes, attach the shelves with bolts that fit the rack. Remove all plugs from the shelves if present.
Figure 6. Right Shelf – Outer View
1
Front post attachments (Inset A)
4
Rear post attachments (Inset B)
7
Inset B
2
Base
5
Inset A
8
Rack plugs
3
Slide-end
6
Rack plugs
Mounting Ears
Figure 7 - Mounting Ears displays the mounting ears, securing the rack's switch top. The two mounting ears are identical and installed above each shelf. The inner side of each ear may include a latch to the locking mechanism that secures the ear to the rack.
Rack posts and guide pins inserted into the rack are visible from the outer side of the ear (Inset B). To install ears into posts with threaded or round holes, remove both plugs from each ear (if required for rail set), then install the ears with screws that fit the rack.
Figure 7. Mounting Ears
1
Brace (Inner view)
4
Inset A - Released
7
Inset B (Details)
2
Inset A
5
Brace (Outer view)
8
Rack plugs
3
Inset A - Locked
6
Inset B
Component Placement
Figure 8 - Component Placement displays component placement for a 7304 (8-RU) switch. Mounting ears brace the top of the switch; their rack placement position differs for each switch model. Using the placement of the shelves’ bottom front rack plug as a reference (first RU and first hole), the mounting ears are placed as follows:
The switch mounting process consists of three steps:
Installing the shelves.
Installing the mounting ears.
Placing and securing the switch upon the shelves.
Shelf Installation
The installation process for each shelf is identical. The shelves must be installed on the same horizontal level. In the following section, inner side illustrations feature the left shelf, and outer side illustrations feature the right shelf.
Perform the following procedure for each shelf:
If applicable, verify that both locking mechanism latches on the shelf are open (Figure 5 - Left Shelf – Inner View, insets A and B). For racks that do not require the locking mechanism, skip to Step 2.
Attach the front side of the shelf to its corresponding front rack post by inserting the shelf-side rack plugs and guide pins into post slots (Figure 9 - Attaching the Right Shelf).
The shelf ledge must be between the front posts. If the rack plugs were previously removed or not present, use bolts to attach the shelf to the rack and skip to Step 4.
Figure 9. Attaching the Right Shelf
Attach the back side of the shelf into the rear shelf by gliding the slide-end so that the rack plugs (if present) and guide pins are inserted to the rack post holes (Figure 11 - Seating the Left Shelf).
The bottom rack plug must be inserted one RU (three rack holes) above the bottom rack plug on the front side of the shelf. If the locking mechanism and plugs are not used, fasten the back side of the shelf to the rear shelf and skip to Step 6.
Figure 11. Seating the Left Shelf
The mounting ears attach the top of the switch to the rack posts. Their placement on the posts depends on the switch model (Component Placement).
The installation process for each mounting ear is identical. The inner side of the mounting ear (which includes the locking mechanism latch) is oriented between the front rack posts. Depending on the rack kit configuration, a locking mechanism may not be present. In the following section, all illustrations feature the right mounting ear.
Perform the following procedure for each mounting ear:
Install the mounting ear on the front post by inserting the front rack plugs (if present) and guide pins in the racks specified for the switch model that is being installed (Figure 12 - Attaching the Right Mounting Ear).
Figure 12. Attaching the Right Mounting Ear
1
Front right rack post
If rack plugs are not present, align the threaded holes and attach the mounting ears with screws.
Rotate the stabilizer bar from the left shelf toward the right shelf such that the nob at the end of the stabilizer bar inserts into the notch at the rear of the ledge of the right shelf.
Figure 13. Both Switch Shelves Installed
Move the chassis to the rack using a mechanical lift (Figure 3 - Lifting the Switch ChassisLifting the Switch Chassis). If modules are inserted in the chassis, use the lift carefully to avoid damaging any components.
Figure 14. Lifting the Switch Chassis
Lift the chassis into the rack.
Secure the chassis by tightening the six thumbscrews on the front flanges into the rack posts.
