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EX6210 Power System

 

AC Power Supplies in an EX6200 Switch

EX6200 switches can use either AC or DC power supplies. This topic describes the AC power supplies used in EX6200 switches. The switches support both 2500 W AC power supplies and 5000 W AC power supplies.

Each power supply connects to the backplane in an EX6210 switch. The backplane distributes the output power produced by the power supplies to different switch components. Each power supply provides power to all the components in the switch.

Caution

Mixing different types of power supplies (AC and DC or AC power supplies of different wattage) in the same chassis is not supported.

Mixing low-voltage input line and high-voltage input line power feeds in the same chassis is not supported.

This topic includes:

Characteristics of an AC Power Supply

Figure 1 shows the 2500 W AC power supply. Figure 2 shows the 5000 W AC power supply.

Figure 1: 2500 W AC Power Supply
2500 W AC Power Supply
Figure 2: 5000 W AC Power Supply
5000 W AC Power Supply

Table 1 lists the details of the 2500 W AC and 5000 W AC power supplies used in EX6200 switches.

Table 1: Details of the 2500 W AC and 5000 W AC Power Supplies

Details

2500 AC Power Supply

5000 AC Power Supply

Model number

EX6200-PWR-AC2500

EX6200-PWR-AC5000

Field-replaceable unit (FRU) type

Hot-insertable and hot-removable

Hot-insertable and hot-removable

Power supply weight

7 lb (3.2 kg)

10 lb (4.5 kg)

Minimum installed in chassis

1

1

Maximum installed in chassis

4

4

Power supply slots

Install in power supply slots labeled PSU 0 through PSU 3 from left to right, located at chassis front bottom.

Install in power supply slots labeled PSU 0 through PSU 3 from left to right, located at chassis front bottom.

AC appliance Inlet

Note: Each AC appliance inlet requires a dedicated AC power feed.

Number

1

2 (Labeled Input 1 and Input 2)

Type

IEC-320-C20

IEC-320-C20

Rating

16 A

16 A

Enable switch

1

1

Fans

Internal

Internal

Airflow

Front-to-back

Front-to-back

AC power cord retainer

1

2

Power supply status LEDs

Input OK

Input 1 OK

Input 2 OK

Output OK

Output OK

Fail

Fail

Operating range

Low-voltage line input (100–120 VAC)

Supported

Supported

High-voltage line input (200–240 VAC)

Supported

Supported

Output power

Low-voltage line input (100–120 VAC)

1250 W

  • Both power feeds connected and active: 2500 W

  • Only one power feed connected and active: 1250 W

High-voltage line input (200–240 VAC)

2500 W

  • Both power feeds connected and active: 5000 W

  • Only one power feed connected and active: 2500 W

Operating efficiency

Low-voltage line input (100–120 VAC)

92 %

89 %

High-voltage line input (200–240 VAC)

94 %

92 %

Note

Grounding is recommended for AC systems. An AC-powered switch gets additional grounding when you plug the power supply in the switch into a grounded AC power outlet using the power cord.

Caution

The switch is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earthing terminal must be permanently connected to earth ground.

Note

All switch configurations of EX6200 switches are shipped with one power supply. Cover panels are installed over the remaining three power supply slots. Additional power supplies can be added to the different switch configurations as necessary.

For details about different switch configurations, see EX6210 Switch Configurations.

AC Power Supply Power Cord Retainer

This section describes the power cord retainers for the 2500 W and 5000 W AC power supplies:

2500 W AC power supply—Each 2500 W AC power supply ships with a power cord retainer that holds the power cord in place. See Figure 3. The power cord retainer has a clip and an adjustment nut. The L-shaped ends of the clip hook into the bracket holes on the top and bottom of the AC appliance inlet on the faceplate. The adjustment nut holds the power cord in the correct position. For instructions on installing the power cord retainer, see Connecting AC Power to an EX6200 Switch.

Figure 3: Power Cord Retainer for a 2500 W AC Power Supply
Power Cord Retainer for
a 2500 W AC Power Supply

5000 W AC power supply—Each 5000 W AC power supply ships with two power cord retainers that hold the power cords in place. Each power cord retainer has a clip and an adjustment nut. The L-shaped ends of the clip hook into the bracket holes on the sides of the AC appliance inlet on the faceplate. The adjustment nut holds the power cord in the correct position. For instructions on installing the power cord retainer, see Connecting AC Power to an EX6200 Switch.

Figure 4: Power Cord Retainers for a 5000 W AC Power Supply
Power Cord Retainers
for a 5000 W AC Power Supply

Power Supply Cover Panels

All switch configurations of EX6200 switches ship with one power supply installed in the switch. Power supply cover panels are installed in the remaining three power supply slots. Different power supply cover panels are used for different power supplies. Table 2 lists the different power supplies and the cover panel used for each kind. See Figure 5.

Table 2: Power Supply Cover Panels Used in EX6200 Switches

Power Supply

Power Supply Cover Panel

2500 W AC

2500 W AC power supply cover panel

  • Model Number—EX6200-BLNK-PWR-2U

  • Height—Approximately 2 U

5000 W AC

5000 W AC power supply cover panel

  • Model Number—EX6200-BLNK-PWR-3U

  • Height—Approximately 3 U

Figure 5: Power Supply Cover Panels Used in EX6200 Switches
Power Supply Cover Panels
Used in EX6200 Switches
Caution

You must use the correct power supply cover panel to ensure airflow of the power supplies installed in the switch.

Note

If you are upgrading your EX6200 switch from 2500 W AC power supplies to the 5000 W AC power supplies, you must order the 5000 W AC power supply cover panels separately.

Power Supply Airflow

Each power supply has its own fan and is cooled by its own internal cooling system. The airflow is from the front of the power supply to the back. Hot air exhausts from the rear of the chassis.

N+1 Redundancy Configuration of AC Power Supplies

We recommend an N+1 redundancy configuration for normal operation of EX6200 switches. In an N+1 redundancy configuration, if one power supply fails or is removed, the remaining power supplies (N) continue to supply power for the switch without interruption.

You can determine the minimum number of power supplies needed (N) for a switch and then install an additional power supply to meet the required N+1 redundancy configuration.

For details about different switch configurations, see EX6210 Switch Configurations .

Table 3 lists the N+1 power requirements of EX6210 switch configurations that use 2500 W AC and 5000 W AC power supplies.

Note

The calculations for the 5000 W AC power supply are based on the assumption that both power feeds are connected and active.

Table 3: N+1 Power Redundancy Configurations for Different EX6210 Switch Configurations Using 2500 W AC and 5000 W AC Power Supplies

Switch Configuration

Input Voltage

2500 W AC Power Supply

5000 W AC Power Supply

Ports Enabled for PoE+ (802.3 at)

Minimum Number of Power Supplies (N)

Power Supplies for N+1 Redundancy

Ports Enabled for PoE+ (802.3 at)

Minimum Number of Power Supplies (N)

Power Supplies for N+1 Redundancy

96-port RJ-45 system configuration

High-voltage line (200–240 VAC)

1

2

1

2

Low-voltage line (100–120 VAC)

1

2

1

2

96-port PoE+ system configuration

High-voltage line

0

1

2

0

1

2

96

2

3

96

1

2

Low-voltage line

0

1

2

0

1

2

93

3

4

96

4

Not supported

96

2

3

Chassis with two SFP line cards

High-voltage line (200–240 VAC)

1

2

1

2

Low-voltage line (100–120 VAC)

1

2

1

2

Chassis with eight PoE+ line cards

High-voltage line

0

1

2

0

1

2

174

3

4

384

Not supported

Not supported

384

3

4

Low-voltage line

0

2

3

0

1

2

49

3

4

174

3

4

384

Not supported

Not supported

384

Not supported

Not supported

N+N Redundancy Configuration of AC Power Supplies

You can optionally configure your switch for N+N redundancy, in which N power supplies can be removed or fail and the remaining N power supplies continue to supply power for the switch without interruption.

You can configure the power management software to manage switch power for N+N redundancy. When you configure power management for N+N redundancy, half of the total power available (N) is held as reserve power while the other half (N) is available for immediate consumption. If the switch configuration changes and requires additional power, additional power is drawn from the reserve power, the switch no longer has N+N power supply redundancy. This condition raises a minor alarm. If the condition is not corrected within 5 minutes, a major alarm is issued.

For more information on how power management allocates power to chassis components when power is insufficient, see Understanding Power Management on EX Series Switches.

You can determine the minimum number of power supplies needed (N) for the switch and then install additional power supplies to meet the N+N redundancy configuration.

For details about different switch configurations, see EX6210 Switch Configurations.

Table 4 lists the N+N power requirements of EX6210 switch configurations that use 2500 W AC and 5000 W AC power supplies.

Note

The calculations for the 5000 W AC power supply are based on the assumption that both power feeds are connected and active.

Table 4: N+N Power Redundancy Configurations for Different EX6210 Switch Configurations Using 2500 W AC and 5000 W AC Power Supplies

Switch Configuration

Input Voltage

2500 W AC Power Supply

5000 W AC Power Supply

Ports Enabled for PoE+ (802.3 at)

Minimum Number of Power Supplies (N)

Power Supplies for N+N Redundancy

Ports Enabled for PoE+ (802.3 at)

Minimum Number of Power Supplies (N)

Power Supplies for N+N Redundancy

96-port RJ-45 system configuration

High-voltage line (200–240 VAC)

1

2

1

2

Low-voltage line (100–120 VAC)

1

2

1

2

96-port PoE+ system configuration

High-voltage line

0

1

2

0

1

2

96

2

4

96

1

2

Low-voltage line

0

1

2

0

1

2

52

2

4

96

4

Not supported

96

2

4

Chassis with two SFP line cards

High-voltage line (200–240 VAC)

1

2

1

2

Low-voltage line (100–120 VAC)

1

2

1

2

Chassis with eight PoE+ line cards

High-voltage line

0

1

2

0

1

2

91

2

4

258

2

4

384

Not supported

Not supported

384

3

Not supported

Low-voltage line

0

2

4

0

1

2

8

2

4

91

2

4

384

Not supported

Not supported

384

Not supported

Not supported

AC Power Supply LEDs in an EX6200 Switch

Each AC power supply has LEDs on its faceplate that display information about the status of the power supply.

Figure 6 shows the LEDs on a 2500 W AC power supply.

Figure 7 shows the LEDs on a 5000 W AC power supply.

Figure 6: 2500 W AC Power Supply LEDs
2500 W AC Power
Supply LEDs
Figure 7: 5000 W AC Power Supply LEDs
5000 W AC Power
Supply LEDs

Table 5 describes the LEDs on an AC power supply in an EX6200 switch.

Table 5: Power Supply LEDs

LED

State

Description

INPUT OK

Note: The 5000 W AC power supply has two input LEDs labeled INPUT 1 and INPUT 2.

Unlit

Indicates one of the following:

  • Power supply is disconnected from AC power feed.

  • No AC power input.

Green

  • Steadily lit—AC power input voltage is in the normal operating range.

  • Blinking—AC power input voltage is not in the normal operating range.

OUTPUT OK

Unlit

  • Power supply is not supplying DC power correctly.

Green

  • Steadily lit—DC power output is within normal operating range.

  • Blinking—Power supply is not supplying DC power correctly.

FAIL

Unlit

  • Power supply is functioning normally.

Red

  • On steadily—Power supply has failed.

Note

If the INPUT OK LED and the OUTPUT OK LED are unlit, the AC power cord is not installed properly or the power supply has failed.

If the INPUT OK LED is lit and the OUTPUT OK LED is unlit, the AC power supply is not installed properly or the power supply has an internal failure.

If the FAIL LED is lit, the power supply has failed and must be replaced.

AC Power Specifications for EX6200 Switches

EX6200 switches support both 2500 W AC power supplies and 5000 W AC power supplies.

Table 6 lists the AC power specifications for the power supplies used in EX6200 switches.

Table 6: Power Specifications for the AC Power Supplies Used in an EX6200 Switch

Item

Specifications

AC input voltage

Operating range:

  • Low-voltage line—100–120 VAC

  • High-voltage line—200–240 VAC

AC input line frequency

50–60 Hz

AC input current rating (per power cord)

  • Low-voltage line—15 A

  • High-voltage line—15 A

AC output power

2500 W AC power supply:

  • Low-voltage line—1250 W

  • High-voltage line—2500 W

5000 W AC power supply:

  • Both power feeds connected and active:

    Low-voltage line—2500 W

    High-voltage line—5000 W

  • Only one power feed connected and active:

    Low-voltage line—1250 W

    High-voltage line—2500 W

Caution

Mixing different types of power supplies (AC and DC or AC power supplies of different wattage) in the same chassis is not supported.

Mixing low-voltage input line and high-voltage input line power feeds in the same chassis is not supported.

AC Power Cord Specifications for an EX6200 Switch

Each AC appliance inlet on the AC power supply requires a dedicated AC power feed. Most sites distribute power through a main conduit that leads to frame-mounted power distribution panels, one of which can be located at the top of the rack that houses the switch. Each AC power cord connects the power supply to the power distribution panel.

Each detachable AC power cord is 2.5 meters (approximately 8 feet) long. The appliance coupler at the female end of the cord inserts into the AC appliance inlet on the faceplate of the AC power supply. The coupler type is C19 as described by the International Electrotechnical Commission (IEC) standard 60320. The plug at the male end of the power cord fits into the power source outlet that is standard for your geographical location.

Note

In North America, AC power cords must not exceed 4.5 meters (approximately 15 feet) in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and Canadian Electrical Code (CEC) Section 4-010(3). The cords shipped with the switch are in compliance.

Table 7 lists the AC power cord specifications for an EX6200 switch for various countries and regions.

Table 7: AC Power Cord Specifications for an EX6200 Switch

Country/Region

Electrical Specifications

Plug Standards

Juniper Model Number

Graphic

Argentina

250 VAC, 16 A, 50 Hz

IRAM Type RA/3/20

CBL-EX-PWR-C19-AR

No graphic available

Australia

250 VAC, 15 A, 50 Hz

AS/NZS 3112 Type SAA/3/15

CBL-EX-PWR-C19-AU

Brazil

250 VAC, 16 A, 50 Hz

NBR 14136 Type BR/3/20

CBL-EX-PWR-C19-BR

No graphic available

China

250 VAC, 16 A, 50 Hz

GB 1002 Type PRC/3/16

CBL-EX-PWR-C19-CH

Europe (except Italy, Switzerland, and United Kingdom)

250 VAC, 16 A, 50 Hz

CEE (7) VII Type VIIG

CBL-EX-PWR-C19-EU

India

250 VAC, 16 A, 50 Hz

SABS 164/1 Type ZA/3

CBL-EX-PWR-C19-IN

No graphic available

Israel

250 VAC, 16 A, 50 Hz

SI 32 Type IL/3

CBL-EX-PWR-C19-IL

Italy

250 VAC, 16 A, 50 Hz

CEI 23-16 Type I/3/16

CBL-EX-PWR-C19-IT

Japan

250 VAC, 16 A, 50 Hz

NEMA 6–20 Type N6/20

CBL-EX-PWR-C19-JP

NEMA L6–20 Type NEMA Locking

CBL-EX-PWR-C19-JPL (default)

125 VAC, 15A, 50 Hz

NEMA 5-15 Type N5/15

CBL-EX-PWR-C19-JP110V

Korea

250 VAC, 16 A, 50 Hz

CEE(7) VII Type VIIG

CBL-EX-PWR-C19-KR

North America

250 VAC, 16 A, 50 Hz

NEMA 6–20 Type N6/20

CBL-EX-PWR-C19-US

NEMA L6–20 Type NEMA Locking

CBL-EX-PWR-C19-USL (default)

125 VAC, 20 A, 50 Hz

NEMA 5–20 Type N5/20

CBL-EX-PWR-C19-US20

South Africa

250 VAC, 16 A, 50 Hz

SABS 164/1 Type ZA/3

CBL-EX-PWR-C19-SA

Switzerland

250 VAC, 16 A, 50 Hz

SEV 5934-2 Type 23G

CBL-EX-PWR-C19-SZ

No graphic available

Taiwan

250 VAC, 16 A, 50 Hz

NEMA L6–20 Type NEMA Locking

CBL-EX-PWR-C19-TW

United Kingdom

250 VAC, 13 A, 50 Hz

BS 1363/A Type BS89/13

CBL-EX-PWR-C19-UK

Caution

AC power cords for EX6200 switches are intended for use with this switch only and not for any other use.

Power Cable Warning (Japanese)

Warning: The attached power cable is only for this product. Do not use the cable for another product.

Warning

Power cords must not block access to switch components. We recommend that you route all AC power cord cables through the optional power cord tray provided with the switch.

Caution

The switch is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earth terminal must be permanently connected to earth ground. See Connecting Earth Ground to an EX Series Switch.

DC Power Supply in an EX6200 Switch

EX6200 switches can use either AC or DC power supplies. This topic describes the DC power supplies in EX6200 switches.

Caution

Mixing different types of power supplies (AC and DC) in the same chassis is not supported.

The DC power supplies in EX6200 switches are hot-removable and hot-insertable field-replaceable units (FRUs).

You can install up to four DC power supplies in an EX6200 switch. Power supplies are installed at the bottom of the chassis in slots labeled PSU 0 through PSU 3 (left to right). See Slot Numbering for an EX6210 Switch. All power supplies are accessible from the front of the chassis.

Note

Grounding is required for DC-powered systems.

Warning

The switch is a pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal provided on the chassis. This separate protective earthing terminal must be permanently connected to earth ground.

Note

All switch configurations of EX6200 switches are shipped with one power supply. Cover panels are installed over the remaining three power supply slots. Additional power supplies can be added to the switches as necessary. For details about different switch configurations, see EX6210 Switch Configurations.

Each DC power supply weighs approximately 7 lb (3.2 kg) and has a pair of DC input lugs on the front of the power supply. Each power supply also has an Enable switch, a fan, and three LEDs on the faceplate that indicate the status of the power supply. See Figure 8.

Figure 8: DC Power Supply
DC Power Supply
Note

A 2100 W DC power supply requires a dedicated 60 A circuit breaker for each input DC feed.

Each DC power supply connects to the backplane in an EX6200 switch. The backplane in an EX6200 switch distributes the output power produced by the power supplies to different switch components. Each DC power supply provides power to all the components in the switch.

Each DC power supply has its own fan and is cooled by its own internal cooling system. The airflow is from the front of the power supply to the back. Hot air exhausts from the rear of the chassis.

The power configuration recommended for an EX6200 switch is an N+1 power configuration. In an N+1 power configuration, if one power supply fails or is removed, the remaining power supplies (N) continue to supply power for the system without interruption.

The configuration type of the switch, number of ports enabled for PoE, and the input voltage determine the minimum number of power supplies needed (N) for a switch. You must install an additional power supply to meet the recommended N+1 power redundancy configuration. See EX6210 Switch Configurations for details about different EX6200 switch configurations.

Table 8 lists the N+1 power requirements of an EX6210 switch configuration that use 2100 W DC power supplies.

Table 8: N+1 Power Redundancy Configurations for Different EX6210 Switch Configurations Using 2100 W DC Power Supplies

Switch Configuration

Nominal Input Voltage

Ports Enabled for PoE+ (802.3at)

Minimum Number of Power Supplies Needed (N)

Power Supplies Needed for N+1 Redundancy

96-port RJ-45 system configuration

–48 VDC through

–60 VDC

NA

1

2

96-port PoE+ system configuration

–48 VDC through

–60 VDC

0

1

2

96

2

3

Fully loaded with two SFP line cards

–48 VDC through

–60 VDC

NA

1

2

Fully loaded with eight PoE+ line cards

–48 VDC through

–60 VDC

0

2

3

134

3

4

384

Not supported

Not supported

You can optionally configure your switch for N+N redundancy, in which N power supplies can be removed or fail and the remaining N power supplies continue to supply power for the switch without interruption.

You can configure the power management software to manage the switch power for N+N redundancy. When you configure power management for N+N redundancy, half of the total power available (N) is held as reserve power while the other remaining half (N) is available for immediate consumption. If the switch configuration changes (addition of one or more line cards, or additional PoE ports enabled), additional power is required to power on the new line cards. If this additional power is drawn from the reserve power, the switch no longer has N+N power supply redundancy. This condition raises a minor alarm. If the condition is not corrected within 5 minutes, a major alarm is issued.

The configuration type of the switch and the number of ports enabled for PoE determine the minimum number of power supplies needed (N) for the switch. You must then install additional power supplies to meet the N+N redundancy configuration. For details about different switch configurations, see EX6210 Switch Configurations.

Table 9 lists the N+N power requirements of an EX6210 switch configuration that use 2100 W DC power supplies.

Table 9: N+N Power Redundancy Configurations for Different EX6210 Switch Configurations Using 2100 W DC Power Supplies

Switch Configuration

Nominal Input Voltage

Ports Enabled for PoE+

Minimum Number of Power Supplies Needed (N)

Power Supplies Needed for N+N Redundancy

96-port RJ-45 system configuration

–48 VDC through

–60 VDC

NA

1

2

96-port PoE+ system configuration

–48 VDC through

–60 VDC

0

1

2

96

2

4

Fully loaded with two SFP line cards

–48 VDC through

–60 VDC

NA

1

2

Fully loaded with eight PoE+ line cards

–48 VDC through

–60 VDC

0

2

4

64

2

4

384

Not supported

Not supported

DC Power Supply LEDs in an EX6200 Switch

A DC power supply has three LEDs on its faceplate: INPUT OK, OUTPUT OK, and FAIL LEDs. All three LEDs display information about the status of the power supply. See Figure 9.

Figure 9: DC Power Supply LEDs in an EX6200 Switch
DC Power Supply LEDs in an
EX6200 Switch

Table 10 describes the LEDs on a DC power supply in EX6200 switches.

Table 10: DC Power Supply LEDs in EX6200 Switches

LED

State

Description

INPUT OK

Unlit

Indicates one of the following:

  • Power supply is disconnected from DC power feed.

  • No DC power input.

Green

  • On steadily—DC power input voltage is within operating range (–40 VDC through –72 VDC).

  • Blinking—DC power input voltage is not within operating range (-40 VDC through -72 VDC).

OUTPUT OK

Unlit

Indicates one of the following:

  • DC output voltage is not within normal operating range.

  • Power supply is not supplying DC power correctly.

Green

  • On steadily—DC power output is within normal operating range.

  • Blinking—DC output voltage is not within normal operating range.

FAIL

Unlit

  • Power supply is functioning normally.

Red

  • On steadily—Power supply has failed.

Note

If the INPUT OK LED and the OUTPUT OK LED are unlit, the power cords are not installed properly or the power supply has failed.

If the INPUT OK LED is lit green and the OUT OK LED is unlit, the power supply is not installed properly or the power supply has an internal failure.

If the FAIL LED is lit, the power supply has failed and must be replaced.

DC Power Specifications for EX6200 Switches

EX6200 switches can use either AC or DC power supplies.

Table 11 lists the power specifications for the 2100 W DC power supply used in EX6200 switches.

Table 11: Power Specifications for a 2100 W DC Power Supply Used in an EX6200 Switch

Item

Specifications

DC input voltage

  • Nominal operating voltage: –48 VDC through - 60 VDC

  • Operating voltage range: –40 VDC through –72 VDC

Note: If the input voltage from the DC power source drops below –37.5 VDC through –39.5 VDC, the switching platform automatically shuts down. During automatic shutdown, the circuit remains active. When the input voltage returns to –43 VDC through –44 VDC, the switch automatically starts up again and the system returns to normal operation within 30 minutes. No operator intervention is required.

DC input current rating

  • 60 A maximum at lowest nominal operating voltage (–40 VDC) for each input terminal.

  • 50 A maximum at nominal operating voltage (–48 VDC) for each input terminal.

Output power

2100 W

Power Requirements for EX6210 Switch Components

Table 12 lists the maximum power requirements for different hardware components of an EX6210 switch under typical voltage conditions.

Table 12: EX6210 Switch Component Power Requirements

Components

Maximum Power Requirements (Watts)

Fan tray

300 W

Switch Fabric and Routing Engine (SRE) module

100 W

48-port PoE+ line card (EX6200-48P)

Maximum base power requirement: 220 W

Maximum PoE+ power requirement: 1440 W

48-port RJ-45 line card (EX6200-48T)

150 W

48-port SFP line card (EX6200-48F)

250 W

PoE enabled (per port)

15.4 W

PoE+ enabled (per port)

30 W

Calculating Power Requirements for an EX6210 Switch

Use the information in this topic to calculate power requirements of your EX6210 switch configuration, number of power supplies required for different EX6210 switch configurations, and the system thermal output of your EX6210 switch.

Note

The calculations in this topic represent the maximum power requirements that you need to budget for your EX6210 switch configuration. The actual power consumption of your switch will be less than the calculated results shown here and will vary based on the hardware and software configuration of your switch, the amount of traffic passing through the line cards, and environmental variables such as room temperature.

To complete these calculations, you might need to refer to the following information:

Maximum Power Requirements of EX6210 Switch Components

Table 13 lists the maximum power requirements of the switch components of an EX6210 switch under typical voltage conditions. The numbers in this table are used for various calculations in this topic.

Table 13: EX6210 Switch Component Power Requirements

Components

Maximum Power Requirements (Watts)

Fan tray

300 W

Switch Fabric and Routing Engine (SRE) module

100 W

48-port PoE+ line card (EX6200-48P)

Maximum base power requirement: 220 W

Maximum PoE+ Power Requirement = (Maximum Number of Ports on the Line Card ) * (Maximum PoE+ Power Requirement Per Port)

Maximum PoE+ Power Requirement = (48) * (30 W)

Maximum PoE+ Power Requirement = 1440 W

48-port RJ-45 line card (EX6200-48T)

150 W

48-port SFP line card (EX6200-48F)

250 W

PoE enabled (per port)

15.4 W

PoE+ enabled (per port)

30 W

Note

The calculations in this topic use the maximum possible values for PoE+. However, you can configure the PoE or PoE+ power budget of each line card to values lower than the maximum requirements. See Configuring PoE on EX Series Switches (CLI Procedure).

Calculating the Chassis Base Power Budget for Your EX6210 Switch

The chassis base power budget for an EX6210 switch is the sum of the maximum power requirements of the fan tray and two SRE modules. See Table 13 for the power requirements of the fan tray and the SRE module.

Thus the chassis base power budget is :

= 300 W + ((2) * (100 W))

= 300 W + 200 W

= 500 W

Note

The chassis base power budget of the EX6210 switch remains the same, even if only one SRE module is installed in the switch.



Calculating the Maximum System Power Required for Your EX6210 Switch Configuration

To calculate the maximum system power required for your EX6210 switch configuration, determine the maximum internal power requirements of all the components installed in the chassis, and then divide this result by the power supply efficiency.

To calculate the maximum system power requirements of an EX6210 switch, follow the instructions in Table 14.

Table 14: Calculating the Maximum System Power Required for Your EX6210 Switch Configuration

Step

EX6210 switch with two 48-port RJ-45 line cards, 2100 W DC power supply

EX6210 switch with two 48-port PoE+ line cards, 2500 W AC power supply (high-voltage line input)

EX6210 switch with two 48-port SFP line cards, 5000 W AC power supply (high-voltage line input)

1

Start with the chassis base power budget of your switch.

500 W

500 W

500 W

Compute chassis base power budget as shown in Calculating the Chassis Base Power Budget for Your EX6210 Switch .

2

Total Base Power Requirement of the Installed Line Cards = (Number of Line Cards Installed in the Switch) * (Maximum Power Requirement of Line Card)

= ((2) * (150 W))

= 300 W

=((2) * (220 W))

= 440 W

= ((2) * (250 W))

= 500 W

For maximum power requirements of different EX6210 switch components, see Table 13.

3

Total PoE+ Power Requirement of the Installed Line Cards = (Number of Line Cards Installed in the Switch) * (Maximum PoE+ Power Requirement per Line Card)

-

= ((2) * (1440 W))

= 2880 W

-

For details about the PoE+ power budget for your switch, see Understanding PoE on EX Series Switches.

4

Total Power Requirement of the Installed Line Cards = (Total Base Power Requirement of the Installed Line Cards) + (Total PoE+ Power Requirement of the Installed Line Cards)

= 300 W

= (440 W + 2880 W)

= 3320 W

= 500 W

5

Maximum Internal Power Requirement of the Switch = (Chassis Base Power Budget) + (Total Power Requirement of the Installed Line Cards)

= (500 W + 300 W)

= 800 W

= (500 W + 3320 W)

= 3820 W

= (500 W + 500 W)

= 1000 W

6

Determine the efficiency of the installed power supply:

  • 2500 W AC power supply efficiency is approximately 94% at high-voltage line (200–240 VAC) input.

  • 2500 W AC power supply efficiency is approximately 92% at low-voltage line (100–120 VAC) input.

  • 5000 W AC power supply efficiency is approximately 92% at high-voltage line (200–240 VAC) input.

  • 5000 W AC power supply efficiency is approximately 89% at low-voltage line (100–120 VAC) input.

  • 2100 W DC power supply efficiency is approximately 92%.

92%

94%

92%

7

Maximum System Power Requirement = (Maximum Internal Power Requirement of the Switch) / (Efficiency of the Installed Power Supply)

= 800 W / .92

= 870 W

= 3820 W / .94

= 4064 W

1000 W / .92

= 1087 W



Calculating the Number of Power Supplies Required for Your EX6210 Switch Configuration

Use the procedure described in this section to calculate the number of power supplies required by your switch configuration. The recommended power configuration for EX6210 switches is N+1. You can optionally configure power management to manage the power supplies for N+N redundancy. See Understanding Power Management on EX Series Switches.

To calculate the number of power supplies required for your EX6210 switch, follow the instructions in Table 15.

Table 15: Calculating the Number of Power Supplies Required for Your EX6210 Switch Configuration

Step

EX6210 switch with two 48-port RJ-45 line cards, 2100 W DC power supply

EX6210 switch with two 48-port PoE+ line cards, 2500 W AC power supply (high-voltage line input)

EX6210 switch with two 48-port SFP line cards, 5000 W AC power supply (high-voltage line input)

1

Start with the chassis base power budget of your switch.

500 W

500 W

500 W

Compute chassis base power budget as shown in Calculating the Chassis Base Power Budget for Your EX6210 Switch .

2

Total Base Power Requirement of the Installed Line Cards = (Number of line cards installed in the switch) * (Maximum Power Requirement of line card)

= (2) * (150 W)

= 300 W

=(2) * (220 W)

= 440 W

= (2) * (250 W)

= 500 W

For maximum power requirements of different EX6210 switch components, see Table 13.

3

Total PoE+ Power Requirement of the Installed Line Cards = (Number of line cards installed in the switch) * (Maximum PoE+ Power Requirement of each line card)

-

= (2) * (1440 W)

= 2880 W

-

For details about the PoE+ power budget for your switch, see Understanding PoE on EX Series Switches.

4

Total Power Requirement of the Installed Line Cards = (Total Base Power Requirement of the Installed Line Cards) + (Total PoE+ Power Requirement of the Installed Line Cards)

= 300 W

= (440 W + 2880 W)

= 3320 W

= 500 W

5

Maximum Internal Power Requirement of the Switch = (Chassis Base Power Budget) + (Total Power Requirement of the Installed Line Cards)

= 500 W + 300 W

= 800 W

= (500 W + 3320 W)

= 3820 W

= 500 W + 500 W

= 1000 W

6

Determine the output wattage of the installed power supply:

  • The output wattage of a 2500 W AC power supply is 2500 W at high-voltage line (200–240 VAC) input.

  • The output wattage of a 2500 W AC power supply is 1250 W at low-voltage line (100–120 VAC) input.

  • The output wattage of a 5000 W AC power supply is 5000 W at high-voltage line (200–240 VAC) input when both input feeds are connected and active.

  • The output wattage of a 5000 W AC power supply is 2500 W at low-voltage line (100–120 VAC) input when both input feeds are connected and active.

  • The output wattage of a 2100 W DC power supply is 2100 W

2100 W

2500 W

5000 W

7

Number of power supplies required for your switch (N) = (Maximum Internal Power Requirement of the Switch) / (Output wattage of the Installed Power Supply)

Note: If the value of N is not a whole number, round up the value of N to the next whole number.

= (800 W) / (2100 W)

= 0.38

= 1

= (3820 W) / (2500 W)

= 1.52

= 2

= (1000 W) / (5000 W)

= 0.2

= 1

8

To achieve N+1 power redundancy, add a single power supply to the value of N.

= 1 + 1

= 2

= 2 + 1

= 3

= 1 + 1

= 2

To achieve N+N power redundancy, add N power supplies to the value of N.

= 1 +1

= 2

= 2+ 2

= 4

= 1 +1

= 2

Note

We recommend that you maintain N +1 or N+N power supplies in your switch at all times.

Power management raises a minor alarm if the number of online power supplies in your switch is less than the number required to maintain the configured power redundancy (N+1 or N+N ). If the problem is not corrected in 5 minutes, power management raises a major alarm. See Understanding Alarm Types and Severity Levels on EX Series Switches for details.

Power management raises a major alarm if the number of online power supplies in your switch is less than N power supplies and normal operation of the switch might be disrupted. For more information about how power management allocates power to chassis components when power is insufficient, see Understanding Power Management on EX Series Switches.



Calculating System Thermal Output for Your EX6210 Switch Configuration

To calculate the system thermal output of an EX6210 switch, follow the instructions in Table 16.

Table 16: Calculating System Thermal Output for Your EX6210 Switch Configuration

Step

EX6210 switch with two 48-port RJ-45 line cards, 2100 W DC power supply

EX6210 switch with two 48-port PoE+ line cards, 2500 W AC power supply (high-voltage line input)

EX6210 switch with two 48-port SFP line cards, 5000 W AC power supply (high-voltage line input)

1

Start with the chassis base power budget of your switch.

500 W

500 W

500 W

Compute chassis base power budget as shown in Calculating the Chassis Base Power Budget for Your EX6210 Switch .

2

Total Base Power Requirement of the Installed Line Cards = (Number of line cards installed in the switch) * (Maximum Power Requirement of line card)

= (2) * (150 W)

= 300 W

=(2) * (220 W)

= 440 W

= (2) * (250 W)

= 500 W

For maximum power requirements of different EX6210 switch components, see Table 13.

3

Total Power Requirement of the Installed Line Cards = (Total Base Power Requirement of the Installed Line Cards) + (Total PoE+ Power Requirement of the Installed Line Cards)

Note: Thermal output from the PoE+ line cards is dissipated at the PoE powered device end, so this Power Requirement is not included in the system thermal output.

= 300 W

= 440 W

= 500 W

4

Maximum Internal Power Requirement of the Switch = (Chassis Base Power Budget) + (Total Power Requirement of the Installed Line Cards)

= (500 W + 300 W)

= 800 W

= (500 W + 440 W)

= 940 W

= (500 W + 500 W)

= 1000 W

5

Determine the efficiency of the installed power supply:

  • 2500 W AC power supply efficiency is approximately 94% at high-voltage line (200–240 VAC) input.

  • 2500 W AC power supply efficiency is approximately 92% at low-voltage line (100–120 VAC) input.

  • 5000 W AC power supply efficiency is approximately 92% at high-voltage line (200–240 VAC) input.

  • 5000 W AC power supply efficiency is approximately 89% at low-voltage line (100–120 VAC) input.

  • 2100 W DC power supply efficiency is approximately 92%.

92%

94%

92%

6

Maximum System Power Requirement = (Maximum Internal Power Requirement of the Switch) / (Efficiency of the Installed Power Supply)

= 800 W / .92

= 870 W

= 940 W / .94

= 1000 W

= 1000 W / .92

= 1087 W

7

System Thermal Output = (Maximum System Power Requirement ) * 3.41

Note: 1 W = 3.41 BTU/hr

= 870 * 3.41 BTU/hr

= 2996.7 BTU

= 1000 * 3.41 BTU/hr

= 3410 BTU

= 1087 * 3.41 BTU/hr

3706.67 BTU

Note

The system thermal output for your switch configuration will be different from the values calculated in Table 16. Using the maximum system power requirement values to calculate the system thermal output would typically provide you with a value that would overprovision the cooling system budget. The typical power requirement is about one-third less than these calculated values.