Cisco Catalyst 9400 Series Switches Hardware Installation Guide

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Updated:
March 19, 2024

Chapter: Product Overview

Product Overview

Switch Models

The following sections provide detailed information about the available switch models:

Catalyst 9404R Switch

The Catalyst 9404R Switch is a four-slot modular chassis, with two redundant supervisor module slots, two line card slots with up to 96 front panel ports, one nonredundant fan tray assembly, and has a provision to accommodate up to four power supply modules.

Front View of the Catalyst 9404R Switch

The figure shows a front view of the chassis, with the major components identified:

1

Chassis handholds

5

Line card slots (1 and 4)

2

Power supply modules

6

Chassis Radio Frequency ID (RFID)

3

Fan tray assembly

7

Chassis model number

4

Supervisor module slots (2 and 3)

8

System ground

Rear View of the Catalyst 9404R Switch

The figure shows a rear view of the chassis, with the major components identified:

1

Access to remove fan tray from the rear

2

Blue beacon LED on the rear panel of the fan tray (always matches the blue beacon on the front panel of the fan tray)
Table 1. Catalyst 9404R Switch Features

Feature

Description

Product ID

Chassis model number (add = for spare)—Cisco Catalyst 9400 Series 4 Slot Chassis(C9404R)

Chassis

Has four horizontal slots. Slots are numbered 1 (left) to 4 (right).

Supervisor modules

Supports 1+1 supervisor module redundancy for integrated resiliency. Supported model numbers (add = for spare):

  • Cisco Catalyst 9400 Series Supervisor 1 Module (C9400-SUP-1)

  • Cisco Catalyst 9400 Series Supervisor 1XL Module (C9400-SUP-1XL)

  • Cisco Catalyst 9400 Series Supervisor 1XL-Y 25G Module (C9400-SUP-1XL-Y)

  • Cisco Catalyst 9400 Series Supervisor 2 Module (C9400X-SUP-2)

  • Cisco Catalyst 9400 Series Supervisor 2XL Module (C9400X-SUP-2XL)

Supervisor modules:

  • Must be installed in slots numbered 2 and 3 only.

  • Have minimum software release version requirements. Refer to your software release notes for this information.

See Cisco Catalyst 9400 Series Supervisor Module Installation Note.

Line cards

Accommodates two line cards. Supported model numbers (add = for spare):

  • Cisco Catalyst 9400 Series 12-Port 40G/100G Module (C9400-LC-12QC)

  • Cisco Catalyst 9400 Series 24-Port SFP Module (C9400-LC-24S)

  • Cisco Catalyst 9400 Series 24-Port SFP/SFP+ Module (C9400-LC-24XS)

  • Cisco Catalyst 9400 Series 24-Port 10G/25G Module (C9400-LC-24XY)

  • Cisco Catalyst 9400 Series 48-Port Gigabit Ethernet UPOE+ 10/100/1000 Module (C9400-LC-48H)

  • Cisco Catalyst 9400 Series 48-Port UPOE+ 100 Mbps/1G/2.5G/5G Multigigabit Module (C9400-LC-48HN)

  • Cisco Catalyst 9400 Series 48-Port UPOE+ 100 Mbps/1G/2.5G/5G/10G Multigigabit Module (C9400-LC-48HX)

  • Cisco Catalyst 9400 Series 48-Port Gigabit Ethernet POE/POE+ Module (C9400-LC-48P)

  • Cisco Catalyst 9400 Series 48-Port SFP Module (C9400-LC-48S)

  • Cisco Catalyst 9400 Series 48-Port 10/100/1000 Module (C9400-LC-48T)

  • Cisco Catalyst 9400 Series 48-Port 100 Mbps/1G/2.5G/5G/10G Multigigabit Module (C9400-LC-48TX)

  • Cisco Catalyst 9400 Series 48-Port UPOE 10/100/1000 Module (C9400-LC-48U)

  • Cisco Catalyst 9400 Series 48-Port UPOE Multigigabit Module (C9400-LC-48UX)

  • Cisco Catalyst 9400 Series 48-Port SFP/SFP+ Module (C9400-LC-48XS)

See Cisco Catalyst 9400 Series Line Card Installation Note.

Fan tray assembly

The switch supports a single front and rear serviceable and hot-swappable fan tray with 8 fans.

Supported model number (add = for spare)—C9404-FAN

See Fan Tray Assembly Overview and Fan Tray LEDs.

Power supplies

The chassis supports up to four field-replaceable AC-input and DC-input power supply modules. Supported model numbers (add = for spare):

  • C9400-PWR-2100AC

  • C9400-PWR-3200AC

  • C9400-PWR-3200ACT

  • C9400-PWR-3200DC

See Power Supply Module Overview and Power Supply LEDs.

Backplane

With C9400-SUP-1, the backplane bandwidth is 80 Gbps.

With C9400-SUP-1XL, C9400-SUP-1XL-Y, and C9400X-SUP-2, the backplane bandwidth is 240 Gbps for each payload module slot.

With C9400X-SUP-2XL, the backplane bandwidth is 480 Gbps for each payload module slot.

RFID Tag

Has a built-in, front-facing, non-removable, passive RFID tag that uses Ultra High Frequency (UHF) RFID technology and requires an RFID reader with compatible software. For more information, see Radio Frequency Identification (RFID) on Cisco Catalyst 9000 Family Switches.

Catalyst 9407R Switch

The Catalyst 9407R Switch is a seven-slot modular chassis, with two redundant supervisor module slots, five line card slots with up to 240 front panel ports, one non-redundant fan tray assembly, and a provision to accommodate up to eight power supply modules.

Front View of the Catalyst 9407R Switch

The figure shows a front view of the chassis, with the major components identified:

1

Chassis handholds

5

Supervisor module slots (3 and 4)

2

Power supply modules

6

Chassis Radio Frequency ID (RFID)

3

Line card slots (1,2, 5,6, and 7)

7

System ground

4

Fan tray assembly

8

Chassis model number

Rear View of the Catalyst 9407R Switch

The figure shows a rear view of the chassis, with the major components identified:

1

Access to remove fan tray from the rear

2

Blue beacon LED on the rear panel of the fan tray (always matches the blue beacon on the front panel of the fan tray)
Table 2. Catalyst 9407R Switch Features

Feature

Description

Product ID

Chassis model number (add = for spare)—Cisco Catalyst 9400 Series 7 Slot Chassis(C9407R)

Chassis

Has seven horizontal slots. Slots are numbered 1 (top) to 7 (bottom).

Supervisor modules

Supports 1+1 supervisor module redundancy for integrated resiliency. Supported model numbers (add = for spare):

  • Cisco Catalyst 9400 Series Supervisor 1 Module (C9400-SUP-1)

  • Cisco Catalyst 9400 Series Supervisor 1XL Module ( C9400-SUP-1XL)

  • Cisco Catalyst 9400 Series Supervisor 1XL-Y 25G Module (C9400-SUP-1XL-Y)

  • Cisco Catalyst 9400 Series Supervisor 2 Module (C9400X-SUP-2)

  • Cisco Catalyst 9400 Series Supervisor 2XL Module (C9400X-SUP-2XL)

Supervisor modules:

  • Must be installed in slots numbered 3 and 4 only.

  • Have minimum software release version requirements. Refer to your software release notes for this information.

See Cisco Catalyst 9400 Series Supervisor Module Installation Note.

Line Cards

Accomodates five line cards. Supported model numbers (add = for spare):

  • Cisco Catalyst 9400 Series 12-Port 40G/100G Module (C9400-LC-12QC)

  • Cisco Catalyst 9400 Series 24-Port SFP Module (C9400-LC-24S)

  • Cisco Catalyst 9400 Series 24-Port SFP/SFP+ Module (C9400-LC-24XS)

  • Cisco Catalyst 9400 Series 24-Port 10G/25G Module (C9400-LC-24XY)

  • Cisco Catalyst 9400 Series 48-Port Gigabit Ethernet UPOE+ 10/100/1000 Module (C9400-LC-48H)

  • Cisco Catalyst 9400 Series 48-Port UPOE+ 100 Mbps/1G/2.5G/5G Multigigabit Module (C9400-LC-48HN)

  • Cisco Catalyst 9400 Series 48-Port UPOE+ 100 Mbps/1G/2.5G/5G/10G Multigigabit Module (C9400-LC-48HX)

  • Cisco Catalyst 9400 Series 48-Port Gigabit Ethernet POE/POE+ Module (C9400-LC-48P)

  • Cisco Catalyst 9400 Series 48-Port SFP Module (C9400-LC-48S)

  • Cisco Catalyst 9400 Series 48-Port 10/100/1000 Module (C9400-LC-48T)

  • Cisco Catalyst 9400 Series 48-Port 100 Mbps/1G/2.5G/5G/10G Multigigabit Module (C9400-LC-48TX)

  • Cisco Catalyst 9400 Series 48-Port UPOE 10/100/1000 Module (C9400-LC-48U)

  • Cisco Catalyst 9400 Series 48-Port UPOE Multigigabit Module (C9400-LC-48UX)

  • Cisco Catalyst 9400 Series 48-Port SFP/SFP+ Module (C9400-LC-48XS)

See Cisco Catalyst 9400 Series Line Card Installation Note.

Fan tray assembly

The switch supports a single front and rear serviceable and hot-swappable fan tray with 12 fans.

Supported model number (add = for spare)—C9407-FAN

See Fan Tray Assembly Overview and Fan Tray LEDs.

Power supplies

The chassis supports up to eight field-replaceable AC-input and DC-input power supply modules. Supported model numbers (add = for spare):

  • C9400-PWR-2100AC

  • C9400-PWR-3200AC

  • C9400-PWR-3200ACT

  • C9400-PWR-3200DC

See Power Supply Module Overview and Power Supply LEDs.

Backplane

With C9400-SUP-1, the backplane bandwidth is 80Gbps.

With C9400-SUP-1XL and C9400-SUP-1XL-Y, the backplane bandwidth is 120 Gbps for each payload module slot.

With C9400X-SUP-2, the backplane bandwidth is 240 Gbps for each payload module slot.

With C9400X-SUP-2XL, the backplane bandwidth is 480 Gbps for each payload module slot.

RFID Tag

Has a built-in, front-facing, non-removable, passive RFID tag that uses Ultra High Frequency (UHF) RFID technology and requires an RFID reader with compatible software. For more information, see Radio Frequency Identification (RFID) on Cisco Catalyst 9000 Family Switches.

Catalyst 9410R Switch

The Catalyst 9410R Switch is a ten-slot modular chassis, with two redundant supervisor module slots, eight line card slots with up to 384 1-Gigabit Ethernet front panel ports, one non-redundant fan tray assembly, and a provision to accommodate up to eight power supply modules.

Front View of the Catalyst 9410R Switch

The figure shows a front view of the chassis, with the major components identified:

1

Chassis handholds

5

Supervisor module slots (5 and 6)

2

Power supply modules

6

Chassis Radio Frequency ID (RFID)

3

Line card slots (1,2, 3, 4, 7, 8, 9 and 10)

7

System ground

4

Fan tray assembly

8

Chassis model number

Rear View of the Catalyst 9410R Switch

The figure shows a rear view of the chassis, with the major components identified:

1

Access to remove fan tray from the rear

2

Blue beacon LED on the rear of the fan tray (always matches the blue beacon on the front of the fan tray)
Table 3. Catalyst 9410R Switch Features

Feature

Description

Product ID

Chassis model number (add = for spare)—Cisco Catalyst 9400 Series 10 Slot Chassis(C9410R)

Chassis

Has ten horizontal slots. Slots are numbered 1 (top) to 10 (bottom).

Supervisor modules

Supports 1+1 supervisor module redundancy for integrated resiliency. Supported model numbers (add = for spare):

  • Cisco Catalyst 9400 Series Supervisor 1 Module (C9400-SUP-1)

  • Cisco Catalyst 9400 Series Supervisor 1XL Module (C9400-SUP-1XL)

  • Cisco Catalyst 9400 Series Supervisor 1XL-Y 25G Module (C9400-SUP-1XL-Y)

  • Cisco Catalyst 9400 Series Supervisor 2 Module (C9400X-SUP-2)

  • Cisco Catalyst 9400 Series Supervisor 2XL Module (C9400X-SUP-2XL)

Supervisor modules:

  • Must be installed in slots numbered 5 and 6 only.

  • Have minimum software release version requirements. Refer to your software release notes for this information.

See Cisco Catalyst 9400 Series Supervisor Module Installation Note.

Line Cards

Accomodates eight line cards. Supported model numbers (add = for spare):

  • Cisco Catalyst 9400 Series 12-Port 40G/100G Module (C9400-LC-12QC)

  • Cisco Catalyst 9400 Series 24-Port SFP Module (C9400-LC-24S)

  • Cisco Catalyst 9400 Series 24-Port SFP/SFP+ Module (C9400-LC-24XS)

  • Cisco Catalyst 9400 Series 24-Port 10G/25G Module (C9400-LC-24XY)

  • Cisco Catalyst 9400 Series 48-Port Gigabit Ethernet UPOE+ 10/100/1000 Module (C9400-LC-48H)

  • Cisco Catalyst 9400 Series 48-Port UPOE+ 100 Mbps/1G/2.5G/5G Multigigabit Module (C9400-LC-48HN)

  • Cisco Catalyst 9400 Series 48-Port UPOE+ 100 Mbps/1G/2.5G/5G/10G Multigigabit Module (C9400-LC-48HX)

  • Cisco Catalyst 9400 Series 48-Port Gigabit Ethernet POE/POE+ Module (C9400-LC-48P)

  • Cisco Catalyst 9400 Series 48-Port SFP Module (C9400-LC-48S)

  • Cisco Catalyst 9400 Series 48-Port 10/100/1000 Module (C9400-LC-48T)

  • Cisco Catalyst 9400 Series 48-Port 100 Mbps/1G/2.5G/5G/10G Multigigabit Module (C9400-LC-48TX)

  • Cisco Catalyst 9400 Series 48-Port UPOE 10/100/1000 Module (C9400-LC-48U)

  • Cisco Catalyst 9400 Series 48-Port UPOE Multigigabit Module (C9400-LC-48UX)

  • Cisco Catalyst 9400 Series 48-Port SFP/SFP+ Module (C9400-LC-48XS)

See Cisco Catalyst 9400 Series Line Card Installation Note.

Fan tray assembly

The switch supports a single front and rear serviceable and hot-swappable fan tray with 16 fans.

Supported model number (add = for spare)—C9410-FAN

See Fan Tray Assembly Overview and Fan Tray LEDs.

Power supplies

The chassis supports up to eight field-replaceable AC-input and DC-input power supply modules. Supported model numbers (add = for spare):

  • C9400-PWR-2100AC

  • C9400-PWR-3200AC

  • C9400-PWR-3200ACT

  • C9400-PWR-3200DC

See Power Supply Module Overview and Power Supply LEDs.

Backplane

With C9400-SUP-1, C9400-SUP-1XL, and C9400-SUP-1XL-Y, the backplane bandwidth is 80Gbps for each payload module slot.

With C9400X-SUP-2 the backplane bandwidth is 240 Gbps for each payload module slot.

With C9400X-SUP-2XL the backplane bandwidth is 480 Gbps for each payload module slot.

RFID Tag

Has a built-in, front-facing, non-removable, passive RFID tag that uses Ultra High Frequency (UHF) RFID technology and requires an RFID reader with compatible software. For more information, see Radio Frequency Identification (RFID) on Cisco Catalyst 9000 Family Switches.

Fan Tray Assembly

The following sections provide detailed information about the fan tray assembly:

Fan Tray Assembly Overview


Warning

Statement 1073—No User-Serviceable Parts

There are no serviceable parts inside. To avoid risk of electric shock, do not open.

A Cisco Catalyst 9400 Series fan tray assembly—

  • Is composed of a fan tray and an adapter that is attached to the fan tray. It is responsible for cooling the entire chassis and interfacing with environmental monitors to trigger alarms when conditions exceed thresholds.

  • Has side-to-side airflow for balanced airflow across the inserted cards. When facing the front of the chassis, airflow direction is right to left.

  • Can be installed and removed from the front and the rear.

  • Has a built-in, front-facing, non-removable, passive RFID tag that uses Ultra High Frequency (UHF) RFID technology and requires an RFID reader with compatible software. For more information, see Radio Frequency Identification (RFID) on Cisco Catalyst 9000 Family Switches.

    Is chassis-specific. (Add = to the model number for spares)

    • Model number C9404-FAN for the Catalyst 9404R Switch.

      This model has eight individual fans (two rows of four each). It supports a minimum airflow of 640 cubic feet per minute (CFM) at 100 percent fan throttle.

    • Model number C9407-FAN for the Catalyst 9407R Switch.

      This model has 12 individual fans (three rows). It supports a minimum airflow of 960 cubic feet per minute (CFM) at 100 percent fan throttle.

    • Model number C9410-FAN for the Catalyst 9410R Switch.

      This model has 16 individual fans (four rows). It supports a minimum airflow of 1190 CFM at 100 percent fan throttle.

The following figure shows the C9407-FAN with the major components identified. The C9410-FAN has the same features, and in addition, a fourth row of fans. The C9404-FAN has the same features but has only two rows of fans.

Figure 1. Fan Tray Assembly

1

Captive installation screws on the front of the fan tray.

5

Front fan tray handle.

2

Captive installation screws on the rear of the fan tray.

6

Rear fan tray handle

3

LEDs on the front panel. (The rear blue beacon LED is not visible in this image)

7

Fan tray adapter

4

Fan tray RFID

-

-

Operation


Caution

Do not operate the system if the fan tray assembly is removed or if it is not functioning properly. An overtemperature condition can cause severe equipment damage or an unscheduled system shutdown.

Depending on the ambient conditions, the system optimises the fan-speed for temperature and pressure and maintains the minimum fan speeds and temperatures that the chassis requires. Accordingly, the fan tray's internal controller operates in a normal mode and a Network Equipment-Building System mode (NEBS mode).

  • In the normal mode—the controller optimizes fan-speed for temperature and pressure.

  • In the NEBS mode—the controller responds more aggressively, to maintain proper cooling for installations with high airflow impedance. When the fan tray operates in this mode, there may be increased noise levels due to increased fan speeds.

    You can also manually set the fan tray to operate in the NEBS mode.

High Availability

To ensure high availability, the system is designed to respond to fan failures by either minimising impact or by compensating and operating at a worst case scenario specification.

  • If a single fan fails, the remaining fans in the row compensate with increased speed.

  • If two or more fans fail, the entire fan tray operates at full speed after one minute. Further, the fan tray must be replaced. The individual fans are not field replaceable, you must replace the fan tray.

  • If the temperature sensor fails or communication with the temperature sensor fails, the worst case operating temperature is assumed.

  • If the pressure sensor fails or communication with the pressure sensor fails, the worst case operating pressure is assumed.

Thresholds, Alarms, and Abnormal Acoustic Conditions

Under normal operating conditions, when none of the temperature alarms have been triggered, hardware controls fan speed. If any of the system temperature alarms are triggered, software takes fan speed control from hardware. Refer to the System Management section of the software configuration guide for more information.

When the fan tray operates at full speed, increased noise levels may be expected. The fan tray may operate at full speed in these circumstances:

  • If the fan tray is not installed correctly

  • When operating in the NEBS mode

  • If two or more fans have failed

  • If the STATUS LED remains red for more than one minute

  • If there is a hardware failure

  • If the software watchdog timer is triggered

Power Supply Module

The following sections provide detailed information about the available power supply modules:

Power Supply Module Overview

Available power supply module model numbers (Add = to the model number for spares):

  • C9400-PWR-2100AC

  • C9400-PWR-3200AC

  • C9400-PWR-3200ACT

  • C9400-PWR-3200DC


Note

Unless otherwise indicated, the power supply information provided in this document applies to all the available power supply modules.

The chassis supports field-replaceable AC-input and DC-input power supply modules. If you install modules of different types (AC input and DC input) and capacities, ensure that all the required conditions are met.

Features: AC-Input Power Supply

  • Has a self-cooling mechanism, with a minimum airflow of :

    • 7 cubic feet per minute (CFM) at 100 percent load for C9400-PWR-2100AC and C9400-PWR-3200AC.

    • 19.87 CFM at 100 percent load for C9400-PWR-3200ACT which has a single fan.

  • Provides a regulated 55-VDC PoE-compliant main output and 3.3-VDC standby output.

  • Supports only single-phase source AC. Source AC can be out of phase between multiple power supplies or multiple AC power plugs on the same power supply because all the AC power supply inputs are isolated.

  • Has a release latch and cord-retention mechanism on the front panel of the module to avoid accidental removal of the module or the attached power cord.

  • Supports redundant and combined configuration modes. A single (nonredundant) or a dual (redundant) power supply configuration can support the following loads:

    Input Voltage (in Volts AC)

    Output Power with C9400-PWR-3200AC and C9400-PWR-3200ACT (in Watts)

    Output Power with C9400-PWR-2100AC (in Watts)

    200-240 VAC

    3200 W

    2112 W

    100-120 VAC

    1570 W

    950 W

  • Has a built-in, front-facing, non-removable, passive RFID tag that uses Ultra High Frequency (UHF) RFID technology and requires an RFID reader with compatible software. For more information, see Radio Frequency Identification (RFID) on Cisco Catalyst 9000 Family Switches.

Figure 2. C9400-PWR-3200AC

1

On/ Off rocker switch

5

Power cord retainer

2

LEDs.

6

Airflow intake

3

Power supply module RFID

7

Airflow exhaust

4

Release latch

-

-
Figure 3. C9400-PWR-3200ACT

1

On/ Off rocker switch

5

Power cord retainer

2

LEDs

6

Airflow intake

3

Power supply module RFID

7

Airflow exhaust

4

Release latch

-

-

Features: DC-Input Power Supply

  • Has a self-cooling mechanism, with a minimum airflow of 9.5 cubic feet per minute (CFM) at 100 percent load.

  • Has a release latch mechanism on the side of the module to avoid accidental removal of the module.

  • Has an On/ Off power button on the front panel. Press for two seconds to switch it on and off.

    Pressing the power button on and off turns the main 55-VDC output on and off, respectively. Standby output power of 3.3-VDC is available whenever DC input is applied.

    The power button has two modes of operation, which are described below. Press the power button for 10 seconds to toggle between modes; the LOCATE LED blinks for three seconds when you do.

    • Auto-on: When in this mode, the power supply module automatically starts or restarts on application or restoration of DC input power. This is the default mode.

      For NEBS compliance, the power button must be in the auto-on mode. When power is restored after a power failure, the power supply module recovers automatically.

    • Protected: When in this mode, if the DC power source output voltage is zero, or drops out for more than three seconds, you must press the power button for two seconds, to restore operation.

  • Has dual DC inputs.

    Each input has an independent, isolated circuit. -A and +A form one DC-input; +B and -B form another. Each DC input can be powered either from separate sources, or a suitable single source. The module has one operational mode as a function of both inputs receiving power. When both the inputs are active, a regulated 55-VDC PoE-compliant main output and 3.3-VDC standby output is provided.

  • Has DC-input reversal protection such that the unit will survive DC-input reversal up to the full input voltage rating.

  • Supports redundant and combined configuration modes. A single (nonredundant) or a dual (redundant) power supply configuration, can support the following loads:

    Input Voltage (in Volts DC)

    Output Power with C9400-PWR-3200DC (in Watts)

    40-72 VDC (with an extended range to 75 VDC)

    A voltage differential between inputs is acceptable, as long as the value is within the above range. For example, one DC input can have an input voltage of 40 VDC and the other, 75 VDC.

    3200 W

  • Has a built-in, front-facing, non-removable, passive RFID tag that uses Ultra High Frequency (UHF) RFID technology and requires an RFID reader with compatible software. For more information, see Radio Frequency Identification (RFID) on Cisco Catalyst 9000 Family Switches.

Figure 4. C9400-PWR-3200DC

1

Terminal block

6

Slots for DC input (+B and -B)

2

Release latch

7

On/ Off power button

3

Airflow intake

8

LEDs

4

Airflow exhaust

9

Slot for ground cable

5

Slots for DC input (-A and +A)

10

Power supply module RFID

Operation

The power supply connectors distribute power as follows:

Module

C9400-PWR-2100AC, C9400-PWR-3200AC, C9400-PWR-3200ACT, and C9400-PWR-3200DC

Supervisor Module (Main Output)

Maximum of 20 A at 55 VDC

Line Card (Main Output)

Maximum of 120 A at 55 VDC

Fan Tray, Supervisor Module, Backplane

(Standby Output)

3.3 VDC

Power Supply Modes

Cisco Catalyst 9400 Series Switches offer redundant and combined configuration modes for power supplies.

The number of power supply modules installed and the system load determine the power level that the system expects to draw from each power supply module, and consequently, the power supply mode that will be suitable. To calculate, or estimate a system's power budget, and to determine power supply requirements for a specific PoE configuration, use the Cisco Power Calculator.

To configure a power supply mode, enter the power redundancy-mode command in global configuration mode. If you do not configure a mode, the default mode is applicable.

Combined Mode

This is the default power supply mode.

The system operates on one to eight power supply modules. The power available to the system is the sum of power outputs of all the power supply modules in the chassis. All available power supply modules are active, share power, and can operate at up to 100 percent capacity.


Caution
When operating in combined mode, if any of the modules fail, all remaining operational power supply modules increase their output. If the output power does not meet the system requirements and the power supply autolc shutdown command is disabled, all the operational power supply modules may get overloaded and go into overcurrent shutdown. All system power is then lost.

Redundant Mode

In a redundant configuration, a given power supply module can either be active, or in standby:

  • An active power supply module is powered on, and provides output power. All the active modules in a chassis always attempt to share the load.

  • A standby power supply module is powered on, but asleep, and can switch to active when required. When in standby mode, the power supply module’s OUTPUT LED is blinking green.

To ensure high availability, the system is designed to respond to failure as follows:

  • If all the available power supply modules are active, the operational power supplies continue to share current equally. Note that the load on the available power supplies would have increased.

  • If standby power supply modules are available, the minimum number of power supply modules needed to power the load switch to active.

When configuring a redundant mode, you have these options: an n+1 or an n+n redundant mode.

N+1 Redundant Mode

N is the number of active power supply modules and can be one to seven power supply modules on a seven-slot or a ten-slot chassis, and one to three power supply modules on a four-slot chassis. +1 is the power supply module reserved for redundancy, and must be configured as the standby module (use the power redundancy-mode command in global configuration mode).

The default standby power supply slot on a seven-slot or a ten-slot chassis is eight. The default standby power supply slot on a four-slot chassis is four. To designate a different slot as standby, use the power redundancy-mode command in global configuration mode.

N+N Redundant Mode

N number of power supply modules are configured as active, and n number of power supply modules are configured as standby. To configure standby power supply modules, use the power redundancy-mode command in global configuration mode.

For detailed software configuration information including examples, see the required version of the software configuration guide. In the guide, go to Contents → System Management → Environmental Monitoring and Power Management.

Power Supply Module Installation Considerations


Warning

Statement 1028—More Than One Power Supply

This unit might have more than one power supply connection. To reduce risk of electric shock, remove all connections to de-energize the unit.


Warning

Statement 1073—No User-Serviceable Parts

There are no serviceable parts inside. To avoid risk of electric shock, do not open.

Note

While the installation of power supplies of different capacities in the same chassis is supported, it is not an optimal use of total system power in a redundant mode.

When installing power supply modules, ensure that the following conditions are met:

AC input Only

If you plan to install only AC-input power supply modules, you must meet these conditions in the context of the N+1 redundant mode, or N+N redundant mode, or combined mode:

  • All the installed power supply modules must be of the same capacity.

    For example, all the installed modules are C9400-PWR-2100AC or C9400-PWR-3200ACT.

  • All the installed power supply modules must have the same AC-input voltage level.

    For example, all the power supply modules have an AC-input voltage of 220 VAC, or an AC-input voltage 110 VAC.

AC Input and DC Input with N+1 Redundant Mode or Combined Mode

If you plan to install a mix of AC-input and DC-input power supply modules, you must meet these conditions in the context of the N+1 redundant mode or combined mode:

  • All the installed power supply modules must be of the same capacity.

    For example, a mix of C9400-PWR-3200AC and C9400-PWR-3200DC or a mix of C9400-PWR-3200ACT and C9400-PWR-3200DC are installed.

  • All the installed AC-input power supply modules must have an AC-input voltage of 220 VAC.

AC Input and DC Input with N+N Redundant Mode

If you plan to install a mix of AC-input and DC-input power supply modules, you must meet these conditions in the context of the N+N redundant mode:

  • All the power supply modules that are configured as active must be of the same type; all the modules that are configured as standby must be of the same type. (The type refers to AC input and DC input).

    For example, all the installed active power supply modules are C9400-PWR-2100AC or C9400-PWR-3200ACT, all the installed standby power modules are C9400-PWR-3200DC.

  • All the installed AC-input power supply modules in the chassis must be of the same capacity and have the same input voltage level.

    Continuing with the above example, all the active power supply modules are C9400-PWR-2100AC or C9400-PWR-3200ACT, and have an input voltage of 115 VAC.

  • All the installed DC-input power supply modules must be configured as standby.

    Continuing with the above example, all the installed C9400-PWR-3200DC modules are configured as standby.

  • If power supply modules of different capacities are installed, the higher capacity modules must be configured as standby.

    Continuing with the above example, the 3200 W module is the higher capacity module and all installed C9400-PWR-3200DC modules are configured as standby.


Note

Regardless of the type of power supply module installed (whether only AC input, or only DC input, or a mix of both types), in the context of the N+N redundant mode, ensure the following:

  • When transitioning or switching over to the N+N mode (from any other mode), there must be no change in the power consumption budget during the transition period.

  • Total standby output power must be greater than or equal to the total active output power (total standby output power > or = total active output power). This ensures that the system continues to provide redundancy at the time of a switchover.

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