Regulatory Model Numbers

This section lists the Regulatory Model Numbers (RMNs), where applicable, for the product models for the switches described in this document.

Table 1. Regulatory Model Numbers and Product Numbers
Regulatory Model Number (RMN) Product Number(s)
AN1712 CCS-720XP-48ZC2
AN1714 CCS-720XP-24ZY4
AN1713 CCS-720XP-48Y6

CCS-720XP-24Y6
AN1762 CCS-722XPM-48ZY8
AN1763 CCS-722XPM-48Y4
AN1783 CCS-720XP-48TXH-2C-S

Maintenance and Field Replacement

The Maintenance and Field Replacement section reviews the following topics:

Considerations

Review the following considerations when installing the device.

  • All fans and power supplies are hot swappable.

  • The switch can be running while a power supply is being installed or removed, but the power supply being replaced must not be connected to a power source.

    Note: Saving the switch configuration before replacing a power supply is recommended.

     

  • All slots must be filled or covered with a blank for operation (even though power supply or fans may not be functional).

  • Before you begin, refer to the Arista Networks document Safety Information and Translated Safety Warnings available at: https://www.arista.com/en/support/product-documentation.

    Note: Refer to the front (Front Panel) and rear (Rear Panel) panel illustrations of your device to locate the appropriate LED, the release lever or handle, and the handle for the power supply and fan modules.

Power Supplies

The following steps are required when removing power supplies from a switch.

 

AC Power Supplies

Removing an AC Power Supply

  1. Ground yourself with an ESD wrist strap.
  2. Power down the power supply to be removed by disconnecting the AC power cable.
  3. Push the power supply release lever and remove the power supply.

Installing an AC Power Supply

You must make space for installing the power supply by removing an existing one (Removing an AC Power Supply).
  1. Remove the replacement power supply from its packaging.
  2. Slide the new power supply into the empty slot.
  3. Slide the new power supply into the switch until the power supply is fully seated and the release lever snaps into place.
  4. Connect the power cord to the power supply.
  5. Verify the LED(s) on the power supply.
    Note: The Power Supply status LED is a steady green for normal operation.

     

  6. Verify the new power supply operation by issuing the show environment power command. 
    switch# show environment power

     

    The output of the command lists the power supplies in operation and includes the one you replaced.

DC Power Supplies

Note: Use a three-eighth inch (3/8") hexagon-socket wrench for removing the lug nuts.

Removing a 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.
Note: 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. Access the terminal studs by lifting the plastic cover.
  4. Remove the flange locking nuts to each of the terminal studs.
  5. Disconnect the power cable lug from the terminal studs.
  6. Use the power supply release lever to unseat and slide out the power supply.

Installing a DC Power Supply

You must make space for installing the power supply by removing an existing one (Removing a DC Power Supply) 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 and locked in place.
  5. Connect the DC-input wires to the appropriate terminals using the specified torque (Table 1 - Wiring, Lug, and Tightening Torques for DC PSU) in the following order:
    1. Ground wire to the Protective Earth (PE ) terminal.
    2. Negative source DC cable to the negative (- / -48V) terminal.
    3. Positive (+) source DC cable to the positive (+ / Rtn) terminal.

Fan Modules

Hot swap fans within 30 seconds to prevent the switch from overheating. Ensure that the module you are replacing matches those already installed in the switch.

Removing a Fan Module

The following steps are required when removing or replacing fans from a switch.
  1. Ground yourself with an ESD wrist strap.
  2. Push the fan module release lever and slide the fan module out of the switch.

Installing a Fan Module

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

Rear Panel

All switches covered by this guide use one of the rear panels shown below.

Note: Depending on the installed power supply and fan modules, the appearance could be different from those shown.

 

Figure 1. Rear Panel for CCS-720XP-48ZC2 (Representative switch)

1 Ground 6 Fan module 2 handle 11 Power supply 1
2 Ethernet management port 7 Fan module 3 handle 12 Fan module 3 status LED
3 USB port 8 Power supply 1 status LED 13 Fan module 2 status LED
4 Console serial port 9 Power supply 2 status LED 14 Fan module 1 status LED
5 Fan module 1 handle 10 Power supply 2 15 Ground

Front Panel

This section displays the front panel of all switches covered by this guide.

 

Figure 1. CCS-720XP-48ZC2

1 25G SFP ports 2 System status LED 3 Fan status LED
4 Power supply 1 status LED 5 Power supply 2 status LED 6 100G QSFP ports
7 5G PoE+ ports 8 2.5G PoE+ ports    

 

 

Note: The 2.5G ports are PoE+ (30 W max), and the 5G ports are PoE+ (60 W max).

 

 

Figure 2. CCS-720XP-24ZY4

1 25G SFP ports 2 System status LED 3 Fan status LED
4 Power supply 1 status LED 5 Power supply 2 status LED 6 5G PoE+ ports
7 2.5G PoE+ ports        

 

 

Note: The 2.5G ports are PoE+ (30 W max) and the 5G ports are PoE+ (60 W max).

 

 

Figure 3. CCS-720XP-48Y6

1 25G SFP ports 2 System status LED 3 Fan status LED
4 Power supply 1 status LED 5 Power supply 2 status LED 6 1G PoE+ ports

 

 

Note: The 1G ports are PoE+ (30 W max).

 

 

Figure 4. CCS-720XP-24Y6

1 25G SFP ports 2 System status LED 3 Fan status LED
4 Power supply 1 status LED 5 Power supply 2 status LED 6 1G PoE+ port
7 1G PoE+ ports        

 

 

Note: The 1G ports are PoE+ (30 W max).

 

 

Figure 5. CCS-720XP-48TXH-2C-S
1 RJ45 ports 2 Connection status LED 3 System status LED
4 Fan status LED 5 Power supply 1 status LED 6 Power supply 2 status LED
7 100G QSFP ports 8 25G SFP ports 9 10G PoE+ ports

 

 

Figure 6. CCS-722XPM-48ZY8
1 System status LED 2 Fan status LED 3 Power supply 1 status LED
4 Power supply 2 status LED 5 25G SFP ports 6 2.5G PoE+ ports

 

 

Note: The 2.5G ports are PoE+ (60 W max).

 

 

Figure 7. CCS-722XPM-48Y4
1 System status LED 2 Fan status LED 3 Power supply 1 status LED
4 Power supply 2 status LED 5 10G SFP ports 6 25G SFP ports
7 2.5G PoE+ ports        

 

 

Note: The 2.5G ports are PoE+ (30 W max).

 

Part List

Each switch provides an accessory kit that contains parts that are required to install the switch. This appendix lists the installation parts contained in the switch accessory kit.

The Parts List section reviews the following topics:

Rack Mount Parts

Describes the rack mounting parts and cables requied for installation of the device.

Two-Post or Four-Post Rack Mount Parts

Lists the parts required for a two-post and four-post mounting system.

Figure 1. Two-Post or Four-Post Rack Mount Parts

Quantity Description
2 Mounting brackets
6 M4 x 5 Flat head head Phillips Screws

Cables

Lists the cables required for installation of the device.

Quantity Description
1 RJ-45 Patch Panel Cable
1 RJ-45 to DB9 Adapter Cable
Optional (must be ordered separately)
  Power cables: IEC-320/C13-C14, 13 A, 250 V

 

Note: All provided power cables are for use only with Arista products.

 


Status Indicators

The Status Indicators section reviews the following topics:

Front Indicators

Reviews the Switch and Port indicators of the device.

Switch Indicators

Front panel LEDs are located on the right side of the chassis and display system, fan, and power supply status. The front panel LEDs are labeled as in Figure 1 - System Status Indicators for a representative switch.

Figure 1. System Status Indicators

1 25G SFP ports 2 System status LED 3 Fan status LED
4 Power supply 1 status LED 5 Power supply 2 status LED 6 100G QSFP ports
7 5G PoE+ ports 8 2.5G PoE+ ports    

 

 

Table 1. Switch Indicators LED States (Front)
LED Name LED State Device Status
System Status LED Blinking Green System is powering up.
Green Normal operations. Due to power supply and fan redundancy, this LED will remain green if a single fan or power supply is missing or in a failed state.
Blue The locater function is active.
Amber Two or more fans (any combination of fan modules or PSU fans) are disconnected or malfunctioning. The switch will automatically execute a âgraceful shutdownâ shortly.
Fan Status LED Green All fan and power modules are operating normally.
Amber Single fan module is removed or malfunctioning. It is also amber when a PSU is completely removed or has a stuck fan rotor.
Red Two or more fans (any combination of fan modules or PSU fans) are disconnected or malfunctioning. The switch will automatically execute a âgraceful shutdownâ shortly.
PSU [1:2] Status LED Green PSU is functioning and fully operational. AC is present, Aux output is ON, and Main output is ON.
Off PSU has been removed or is not operating properly due to AC cord being unplugged, its fan rotor being stuck, or an internal fault.

Port Indicators

Port LEDs, located in the vicinity of their corresponding ports, provide link and operational status. Figure 2 - Port LEDs displays the Port LED location on the DCS-7050QX-32S switch.

Figure 2. Port LEDs

1 Port 1 LEDs 3 Port 3 LEDs
22 Port 2 LEDs 4 Port 4 LEDs

 

Table 2 - Port LED States (Front) provides status conditions that correspond to port LED states. Port LED behavior for QSFP+ and SFP+ ports is consistent.

Table 2. Port LED States (Front)
LED State Status
Off Port link is down.
Green Port link is up.
Yellow Port is software disabled.
Flashing Yellow Port failed diagnostics.

Rear Status Indicators

Fan and power supply modules are accessed from the rear panel. Each fan and power supply module contains an LED that reports the module status.

Fan Status LEDs are on the fan modules, as displayed in Figure 3 - Fan Status LED.

Figure 3. Fan Status LED

1 Fan module status LED

 

Table 3 - Fan Status LED States (Rear) provides status conditions that correspond to fan status LED states.

Table 3. Fan Status LED States (Rear)
LED State Status
Off The fan module is not detected. If it is inserted, it may not be seated properly.
Green The fan is operating normally. This LED state is exclusive to its fan module, and independent of the states of its neighboring fans and power supplies.
Red The fan has failed.

 

The AC Power Supply Status LEDs are on the power supply modules, as displayed in Figure 4 - Representative AC Power Supply Status LED (PWR-1021-AC-RED).

Figure 4. Representative AC Power Supply Status LED (PWR-1021-AC-RED)

1 Power supply status LED 2 Release 3 Handle

 

Table 4 - AC Power Supply Status LED States (Rear) provides status conditions that correspond to the AC power supply status LED states.

Table 4. AC Power Supply Status LED States (Rear)
Power Supply State PWR-1021-AC-RED
Input power present Normal operation

Green
Input power present Power Supply fault ON/OFF: ON when PSU output is ON, OFF when PSU Output is OFF
Input power present Power Supply FAN fault FLASH 800 ms ON / 800 ms OFF
No Input power Supply installed in chassis OFF
Input power present Supply not installed in chassis Green

 

Note: You can narrow down the error condition by logging in to the switch to view the specific device state. Refer to the Arista User Manual's Switch Environment Control chapter, under the topic Viewing Environment Status, for further information on the show environment commands.

Configuring the 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 Switch).
  2. Connect the console port to a PC (Connecting Serial and Management Cables).

    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)# ip route 0.0.0.0/0 192.0.2.1

     

  9. Assign an IP address (192.0.2.8/24 in this example) to an Ethernet management port. 
    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.

Cabling the Switch

The Cabling the Switch section reviews the following topics:

Grounding the Switch

After mounting the switch into the rack, connect the switch to the data center ground. Figure 1 - Earth Grounding Pad Sockets displays the location of the grounding pads located on the left of the rear panel.

Note: Grounding wires and grounding lugs (M4 x 0.7) are not supplied. Wire size should meet local and national installation requirements. Commercially available 6 AWG wire is recommended for installations in the U.S.

À la terre et de mise à la terre fils cosses (M4 x 0.7) ne sont pas fournis. Calibre des fils doit satisfaire des exigences de l’installation locale et nationale. Disponible dans le commerce 6 fils AWG est recommandé pour les installations aux États-Unis.

Figure 1. Earth Grounding Pad Sockets

1 Ground 5 Power supply 1 status LED 9 Fan module 3 status LED
2 Fan module 1 handle 6 Power supply 2 status LED 10 Fan module 2 status LED
3 Fan module 2 handle 7 Power supply 2 11 Fan module 1 status LED
4 Fan module 3 handle 8 Power supply 1 12 Ground

Connecting Power Cables

Power cords are optional and must be ordered separately. You must use an approved power cord compliant with local and national electrical codes or order one from Arista for use with the device.

Note: Installation of this equipment must comply with local and national electrical codes. If necessary, consult with the appropriate regulatory agencies and inspection authorities to ensure compliance.

 

Installation de cet équipement doit être conformes aux codes électriques locaux et nationaux. Si nécessaire, consulter les organismes de réglementation appropriés et des autorités de contrôle pour assurer la conformité.

The switch operates with two installed power supplies. At least one power supply must connect to a power source. Two circuits provide redundancy protection. Rear Panel displays the location of the power supplies on the rear panel of the switch.

Note: Read all installation instructions before connecting the system to the power source.

Lire toutes les instructions d’installation avant de brancher le système à la source d’alimentation.

  • Non-Redundant Configuration: Connect power to either of the two power supplies.
  • Redundant Power Supply Configuration: Connect power to both power supplies.

  • Power down the Switch: Remove all power cords and wires from the power supplies.

Note: This equipment must be grounded. Never defeat the ground conductor.

This unit requires overcurrent protection.

Cet équipement doit être mis à la terre. Ne jamais modifier le conducteur de terre.

Cet appareil requiert une protection contre les surintensités.

AC Power Supplies

The following AC power supplies are supported.

  • PWR-621-AC-RED
  • PWR-621-AC-BLUE
  • PWR-1021-AC-RED
  • PWR-1021-AC-BLUE

Figure 2 - AC Power Supply (PWR-1021-AC-RED) displays an AC power supply, including the power connector (C16) on the right side of the module. The AC power supply connects to a circuit that provides the required power, as specified by Specifications.

Figure 2. AC Power Supply (PWR-1021-AC-RED)

1 Power supply status LED 2 Release 3 Handle

 

The power supplies have a C16 connector and require power cables that comply with IEC-320.

DC Power Supplies

The following DC power supplies are supported.

PWR-721-DC-RED

PWR-521-DC-RED

 

Figure 3 - DC Power Supply (PWR-721-DC-RED) displays a representative DC power supply.

 

Figure 3. DC Power Supply (PWR-721-DC-RED)

1 Power supply status LED 4 Battery return (RTN) 7 Plastic cover
2 -48V 5 Protective earth    
3 Release 6 Handle    

 

Note:

A disconnect device must be provided as part of the installation.

Assure power is removed from DC circuits before performing any installation actions. Locate the disconnect device, circuit breakers, or fuses on DC power lines servicing the circuits. Turn off the power line circuits or remove the fuses.

Wire size must comply with local and national requirements and electrical codes. Use only copper wire.

Apply ground connection to the switch first during installation and remove last when removing power.

 

Un dispositif de sectionnement doit être fourni dans le cadre de l'installation.

Pouvoir assurer qu'il est retiré de circuits DC avant d'effectuer des actions d'installation . Localiser les disjoncteurs ou des fusibles sur les lignes de courant continu desservant les circuits. Coupez les circuits de lignes d'alimentation ou retirer les fusibles.

Le calibre du fil doit être conforme aux exigences locales et nationales et les codes électriques. Utiliser du fil de cuivre.

Appliquer connexion à la terre à l'interrupteur premier lors de l'installation et de supprimer la dernière alimentation lors du débranchement.

 

Wire and Lug Preparation

Before performing any installation actions, ensure power is removed from DC circuits by turning off the power line servicing the circuits. Prepare the stranded wiring before you begin a DC power installation.

Note: Stranded copper wiring is required and should meet local and national installation requirements. Wires and grounding lugs are not supplied.

 

  1. Attach an ESD grounding strap.
  2. Prepare the stranded copper wiring for the power supply to be used. Table 1 - Wiring, Lug, and Tightening Torques for DC PSU provides wiring, lug, and tightening torque information for the power supplies covered in this guide.
    Table 1. Wiring, Lug, and Tightening Torques for DC PSU
    PSU Wire Size(1) Lug Type(1) Tightening Torque
    (AWG) (mm2) N∙m in∙lbs.
    PWR-721-DC-RED 10 - 12 6.0 - 4.0 Twin #10 studs spaced for dual-hole lug with 5/8" hole spacing. 2.7 24
    PWR-521-DC-RED 12 - 14 4.0 - 2.5 Twin #10 studs spaced for dual-hole lug with 5/8" hole spacing. 2.7 24

    1. Unless otherwise noted, applies to -48V, Battery return, and Protective earth wires.

  3. Strip the wires to the appropriate length for the lugs to be used.
  4. Use agency-approved compression (pressure) lugs for wiring terminations.
  5. Slip on heat-shrink tubing on the wire ends before assembling the lugs on to the wire.
  6. Crimp the lugs with the proper tool, and ensure that the tubing extends over the barrel of the lugs and the insulation on the wires (Figure 4 - Lugs Wiring Terminations).
    Figure 4. Lugs Wiring Terminations

    1 Insulated wire 3 Lug (all three terminals) B 1/2"
    2 Heat-shrink tubing A 1/4" C 5/8"

     

  7. Shrink the tubing with a heat gun.

Connecting a DC Power Supply to Power Source

To connect a DC power supply to a power source:

  1. Prepare the stranded wiring (Wire and Lug Preparation.)
  2. Attach the appropriate lugs to the source DC wires.
  3. Connect the DC-input wires to the appropriate terminals using the specified torque (Table 1 - Wiring, Lug, and Tightening Torques for DC PSU) in the following order.

     

    Note: Remove terminal covers as needed.

     

    1. Ground wire to the Protective Earth (PE) terminal.
    2. Negative source DC cable to the negative (- / -48V) terminal.

    Positive (+) source DC cable to the positive (+ / Rtn) terminal.

     

    Note:

    Assure power is removed from DC circuits before performing any installation actions. Locate circuit breakers or fuses on DC power lines servicing the circuits. Turn off the power line circuits or remove the fuses.

    Wire size must comply with local and national requirements and electrical codes. Use only copper wire.

    Apply the ground connection first during installation and remove it last when removing power.

     

    Assurez-vous de pouvoir retirer des circuits en courant continu avant d’effectuer toute action d’installation.Localiser les disjoncteurs ou fusibles sur les lignes électriques DC entretien des circuits. Mettez hors tension le circuit ligne ou retirer les fusibles.

    Calibre doit respecter les exigences locales et nationales et les codes de l’électricité. Utiliser seulement du fil de cuivre.

    Appliquer le motif connexion tout d’abord pendant l’installation et supprimer dernière lors du retrait de puissance.

     

     

  4. Replace the terminal covers as required.

Connecting Serial and Management Cables

The accessory kit includes the following cables:

  • RJ-45 to DB-9 serial adapter cable.
  • RJ-45 Ethernet cable.

     

Table 2 - RJ-45 to DB-9 Connections lists the pin connections of the RJ-45 to DB-9 adapter cable.

Table 2. 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 33 2 RXD   DSR 7 4 DTR
GND 4 5 GND   CTS 8 7 RTS

 

Note: RJ-45 to DB-9 connections: For the console management port on the rear panel, RJ-45 pin 1 (RTS) is connected to RJ-45 pin 8 (CTS); RJ-45 pin 2 (DTR) and RJ-45 pin 7 (DSR) are not electrically connected to any signal.

 

Figure 5 - Rear Panel Management Ports displays management ports on the rear panel of the CCS PoE switches. Front Panel and Rear Panel display the front and rear panels of all switches covered by this guide.

Figure 5. Rear Panel Management Ports

1 Speed status LED 2 Activity status LED 3 Ethernet management port
4 USB port 5 Serial console port    

 

Connect management ports as follows:

  • Console (Serial) Port: Connect to a PC with the RJ-45 to DB-9 serial adapter cable. The switch uses the following default settings:

    • 9600 baud
    • No flow control
    • 1 stop bit
    • No parity bits
    • 8 data bits

       

  • Ethernet Management Port: Connect to 10/100/1000 management network with RJ-45 Ethernet cable.
  • USB Port: The USB port may be used for software or configuration updates.
    Note:

    Excessive bending can damage interface cables, especially optical cables.

     

    Flexion excessive peut endommager les câbles d’interface, notamment des câbles optiques.

Rack Mounting the Switch

The Rack Mounting the Switch section reviews the following topics:
Note: The rack mounting procedure is identical for all switches covered by this guide. Illustrations in this chapter depict the mounting of a DCS-7010T-48 switch.

Les procédure de montage du bâti est identique pour tous les commutateurs visés par ce guide. Illustrations dans ce chapitre montrent le montage d’un interrupteur de DCS-7010T-48.

 

Note: Illustrations use a representative Arista switch. Your device may be different in appearance.

Two-Post or Four-Post Rack Mount

The switch can be installed in a two-post or four-post rack. The installation process is identical because the switch attaches to only two posts of a rack.

To mount the switch in a rack, assemble the mounting brackets to the chassis, then attach the brackets to the rack posts. Rack mount accessory kits include the following parts:

  • 2 x mounting brackets

  • 6 x M4x5 flat head Phillips screws.

The following image displays the proper bracket placement for the rack mount.

Figure 1. Bracket Mount Placement for Rack Mount

Inserting the Switch into the Rack

This procedure attaches the switch to the rack.

  1. Lift the chassis into the rack. Position the flanges against the rack posts.
  2. Select mounting screws that fit your equipment rack.
  3. Attach the bracket flanges to the rack posts.
    Figure 3. Inserting the Switch into the Rack

    After completing the rack mount, proceed to Cabling the Switch.

Four-Post Rack Mount

This section provides instructions for mounting the switch in a four-post rack.

The switch is mounted onto a four-post rack by assembling two rails onto the rear posts, sliding the switch onto the rails,and securing the switch to the front posts.

The installation kit provides the following four-post mounting parts:
  • 2x six-hole mounting brackets
  • 2x rail-rods
  • 2x rail-slides

The rail-rods and rail-slides assemble into two identical slide-rails.

Each chassis side has attachment pins that align with bracket holes. Pin orientation is symmetric and equidistant, supporting bracket placements where the flange is flush with the front switch panel, flush with the rear panel, or not flush with either panel. Each bracket hole includes a key-opening for placing the bracket flush with the chassis and then locking it into place.

 

Important: Attachment pins must engage at least five of the six bracket holes.

Goupilles de fixation doivent être lock au moins cinq des trous du six support.

 

Figure 4. Bracket Mount Configuration for Four-Post Rack Mount (Example)

Figure 5. Improper Bracket Mount Configuration for Four-Post Rack Mount (Example)

1 Bracket not attached by at least 5 pins

Assembling the Rails onto the Equipment Rack

Rail-rods and rail-slides assemble into two identical rails. Each rail connects a front post to a rear post. When the rails are installed, the switch slides on the rails into the rack. Each bracket includes a screw that attaches the switch to the rail.

Each end of an assembled rail contains two rack plugs (Attaching the Mounting Brackets to the Switch Chassis). The rails are installed into a rack by inserting the plugs into rack slots. When installing rails into posts with threaded or rounded holes, remove all plugs located on both sides of the assembled rails, then install the rails with bolts that fit the rack.

Figure 7. Attaching the Mounting Brackets to the Switch Chassis

1 Attach rail slide to the switch 4 Bracket clip (attached)
2 Slide rail rod onto rail slide 5 Bracket clip (aligned)
3 Attach bracket clip    

 

  1. Slide a rail-rod into a rail-slide until the rail clip makes an audible click.

    The rail clip prevents the extension of the rail beyond the maximum supported distance between the front and rear rack posts.

    Figure 8. Assembling the Rails

    1 Rail-slide 3 Rack plugs
    2 Rail-rod 4 Rail (assembled)

     

  2. Attach rail to the right rear rack post by inserting rod-end rack plugs into post slots. The slide assembly must be on the side of the post facing the switch.

    If the rack plugs were previously removed, use bolts to attach the rail to the rack.

  3. Attach the slide end of the rail to the front post by extending the rail end past the post, then contracting the rail while guiding the rack plugs into the post.
  4. Repeat Step 1 through 3 for the left posts. Ensure the rails are on the same horizontal level.
    Figure 9. Attaching the Rails

    1 Inset A 2 Inset B

     

Attaching the Switch to the Rack

The appliance slides into the rack once the rails are installed. Each bracket includes a thumb screw that attaches the switch to the rail.
  1. Lift the switch into the rack and insert the mounting brackets into the slide rails.
    Figure 10. Inserting the Switch onto the Rails
  2. Slide the switch on the rails toward the rear posts until the mounting bracket flanges are flush with the rail flanges attached to the rack posts.
  3. Attach the bracket flanges to the rack post using the quick-release thumb screws provided in the accessory kit.
    Figure 11. Attaching the Switch to the Rack Posts