MX10004 Power Planning
Use the information in this topic to calculate the power consumption for the Juniper Networks MX10004 router and plan your configuration’s power requirements.
Power Requirements for MX10004 Components
Table 1 lists the power requirements for different hardware components of an MX10004 router under typical voltage conditions and optics.
|
Component |
Description |
Power Requirements (Watts) |
||
|---|---|---|---|---|
|
At 25° C |
At 40° C |
At 55° C |
||
|
JNP10004-SF2 |
MX10004 SFB |
225 W |
225 W |
225 W |
|
JNP10004-FAN2 |
MX10004 fan tray |
651 W |
651 W |
651 W |
|
JNP10K-RE1 |
MX10004 RCB |
100 W |
175 W |
175 W |
|
MX10K-LC2101 line card |
Line-rate throughput of up to 2.4 Tbps. |
1335 W |
1425 W |
- |
|
MX10K-LC480 line card |
Line-rate throughput of up to 480 Gbps. |
430 W (10G) 370 W (1G) |
450 W (10G) 390 W (1G) |
480 W (10G) 420 W (1G) |
|
MX10K-LC9600 line card |
Line-rate throughput of up to 9.6 Tbps. |
1655 W |
1770 W |
- |
Calculate Power Requirements of an MX10004 Router
Use the information in this topic to calculate power requirements of your MX10004 configuration. You also need to determine the number of power supplies required for different MX10004 router configurations.
To ensure adequate power and to avoid triggering an alarm, we recommend that you maintain n+1 power supplies in your router at all times. Replace failed power supplies immediately to prevent unexpected failures.
If a new line card is installed in an operational router, power management does not power on the line card if the increased power demand exceeds the total available power, including redundant power. If redundant power is used to power on the line card, a minor alarm is raised. The minor alarm becomes a major alarm if the condition is not corrected.
The calculations in this topic represent the maximum power requirements that you need to budget for your MX10004 router configuration. The power consumption of your router will be less than the calculated results shown here. Power consumption will vary based on the hardware and software configuration of your router, the amount of traffic passing through the line cards, and environmental variables such as room temperature.
Before you begin these calculations:
-
Ensure that you understand the different router configurations. See MX10004 Components and Configurations.
-
Ensure that you know the power requirements of different router components. See Power Requirements for MX10004 Components.
- How to Calculate the Power Consumption of Your MX10004 Router Configuration
- How to Calculate the Number of Power Supplies Required for Your MX10004 Configuration
How to Calculate the Power Consumption of Your MX10004 Router Configuration
Use the following procedure to determine the maximum power you need to supply to the router. To calculate maximum system power consumption, you first determine the combined maximum internal power requirements of all the router components and then divide this result by the power supply output power.
The calculations in this topic represent the maximum power requirements that you need to budget for your MX10004 router configuration. The power consumption of your router will be less than the calculated results shown here. Power consumption will vary based on the hardware and software configuration of your router, the amount of traffic passing through the line cards, and environmental variables such as room temperature.
To calculate maximum system power consumption:
-
Determine the maximum power consumption of the base chassis components
(that is, the components other than the line cards). Use Table 2 if your router is configured as either the standard
base or the redundant configuration.
Table 2: Chassis Power Consumption for Standard Configurations Chassis Component
MX10004-BASE Configuration
MX10004-PREMIUM Configuration
MX10004-3F-BASE Configuration
MX10004-4F-PREM Configuration
Fan tray
651*2 = 1302 W
651*2 = 1302 W
651*2 = 1302 W
651*2 = 1302 W
RCB
175 W
175*2 = 350 W
175 W
175*2 = 350 W
SFB
225*5 = 1125 W
225*6 = 1350 W
225*3 = 675 W
225*4 = 900 W
Total
2602 W
3002 W
2152 W
2552 W
-
Calculate the maximum internal power consumption of the entire router
by adding the maximum power requirements of each line card. See Table 3 for a chart of the power needed for line
cards.
Table 3: Line Card Power Consumption Number of Line Cards
MX10K-LC2101
MX10K-LC480
MX10K-LC9600
1
1425 W
450 W
1770 W
2
2850 W
900 W
3540 W
3
4275 W
1350 W
5310 W
4
5700 W
1800 W
7080 W
For example, for an MX10004-PREMIUM Configuration with four MX10K-LC9600 line cards, the maximum power consumption of the four line cards is 7080 W:
1770 W (power consumed by one MX10K-LC9600) x 4 line cards = 7080 W
-
Add the power consumption from Step 1
(3002 W) and the total line card consumption from Step 2
(7080 W).
To continue from the previous example, add the wattage from four MX10K-LC9600 line cards (7080 W) to an MX10004-PREMIUM configuration (3002 W):
7080 W + 3002 W = 10082 W
How to Calculate the Number of Power Supplies Required for Your MX10004 Configuration
The minimum power configuration for MX10004 routers is three power supplies. However, using the calculated minimum power configuration doesn’t prevent the system from triggering a power alarm. To ensure that you don’t trigger power alarms with a fully loaded chassis, you must configure your router for dual feed and high-power settings.
To calculate the number of power supplies required for your minimum router configuration:
-
Determine the power available from the power supplies. The
JNPR10K-PWR-AC2
and JNPR10K-PWR-DC2 power supplies have a set of three
DIP switches on the faceplate. These switches enable you to configure
the power supply for either the high-power (30 A) or low-power (20 A)
input mode.
The
JNPR10K-PWR-AC3 power supply has a set of five DIP switches on the
faceplate that allows you to configure the power supply for either the
high power (20 A) or low power (15 A) input mode.
Table 4,
Table 6,
and Table 5 shows the power available for the
installed power supplies.
Table 4: Total Power Available Power Supply Module Models
With Two Power Supplies
With Three Power Supplies
JNP10K-PWR-AC2 dual-feed, high power (30 A) setting
11,000 W
16,500 W
JNP10K-PWR-AC2 single-feed, high-power (30 A) setting
10,000 W
15,000 W
JNP10K-PWR-AC2, dual-feed, low-power (20 A) setting
6,000 W
9,000 W
JNP10K-PWR-AC2, single-feed, low-power (20 A) setting
5,400 W
8,100 W
JNP10K-PWR-DC2 dual-feed, high-power (80 A) setting
11,000 W
16,500 W
JNP10K-PWR-AC3, single active feed, (15-A) setting
5,000 W
7,500 W
JNP10K-PWR-AC3, two active feeds, (15-A) setting
10,000 W
15,000 W
JNP10K-PWR-AC3, three active feeds, (15-A) setting
15,000 W
22,500 W
JNP10K-PWR-AC3, four active feeds, (15-A) setting
15,600 W
23,400 W
JNP10K-PWR-AC3, single active feed, (20-A) setting
6,000 W
9,000 W
JNP10K-PWR-AC3, two active feeds, (20-A) setting; (either A0 and A1 or B0 and B1)
12,000 W
18,000 W
JNP10K-PWR-AC3, three or four active feeds, (20-A) setting
15,600 W
23,400 W
JNP10K-PWR-DC2 dual-feed, low-power (60 A) setting
8,800 W
13,200 W
JNP10K-PWR-DC2 single-feed, high-power (80 A) setting
5,500 W
8,250 W
JNP10K-PWR-DC2 single-feed, low-power (60 A) setting
4,400 W
6,600 W
Note:The JNP10K-PWR-AC3 power supply has a set of five DIP switches on the faceplate that allows you to configure the power supply for either high power (20 A) or low power (15 A) input mode. If any JNP10K-PWR-AC3 power supply is set to 15 A, then the power budget for all power supplies installed in the system becomes 15 A, regardless of whether other power supplies are set at 20 A. This design helps prevent overloading of the power supply that is set to 15 A. See Table 5.
Table 5: Power Voltages Settings for JNP10K-PWR-AC3 Power Supplies INP-A0 (Switch 0)
INP-A1 (Switch 1)
INP-B0 (Switch 2)
INP-B1 (Switch 3)
Switch 4 (High Input 20 A/Low Input 15 A)
Output Power
15-A
Off
Off
Off
On
Off (15 A)
2500 W
Off
Off
On
Off
Off (15 A)
2500 W
Off
Off
On
On
Off (15 A)
5000 W
Off
On
Off
Off
Off (15 A)
2500 W
Off
On
Off
On
Off (15 A)
5000 W
Off
On
On
On
Off (15 A)
7500 W
Off
On
On
Off
Off (15 A)
5000 W
On
Off
Off
Off
Off (15 A)
2500 W
On
Off
Off
On
Off (15 A)
5000 W
On
Off
On
Off
Off (15 A)
5000 W
On
Off
On
On
Off (15 A)
7500 W
On
On
Off
Off
Off (15 A)
5000 W
On
On
Off
On
Off (15 A)
7500 W
On
On
On
Off
Off (15 A)
7500 W
On
On
On
On
Off (15 A)
7800 W
20-A
Off
Off
Off
On
On (20 A)
3000 W
Off
Off
On
Off
On (20 A)
3000 W
Off
Off
On
On
On (20 A)
6000 W
Off
On
Off
Off
On (20 A)
3000 W
Off
On
Off
On
On (20 A)
6000 W
Off
On
On
Off
On (20 A)
6000 W
Off
On
On
On
On (20 A)
7800 W
On
Off
Off
Off
On (20 A)
3000 W
On
Off
Off
On
On (20 A)
6000 W
On
Off
On
Off
On (20 A)
6000 W
On
Off
On
On
On (20 A)
7800 W
On
On
Off
Off
On (20 A)
6000 W
On
On
Off
On
On (20 A)
7800 W
On
On
On
Off
On (20 A)
7800 W
On
On
On
On
On (20 A)
7800 W
Table 6: Power Voltage Settings for JNP10K-PWR-AC2 and JNP10K-PWR-DC2 Power Supplies INP0 (Switch 1)
INP1 (Switch 2)
H/L (High-Input/Low-Input Switch 3)
Output Power
JNP10K-PWR-AC2
On
On
On (High 30 A)
5500 W
On
On
Off (Low 20 A)
3000 W
On
Off
On (High 30 A)
5000 W
Off
On
On (High 30 A)
5000 W
On
Off
Off (Low 20 A)
2700 W
Off
On
Off (Low 20 A)
2700 W
JNP10K-PWR-DC2
On
On
On (High 80 A)
5500 W
On
On
Off (Low 60 A)
4400 W
On
Off
On (High 80 A)
2750 W
Off
On
On (High 80 A)
2750 W
On
Off
Off (Low 60 A)
2200 W
Off
On
Off (Low 60 A)
2200 W
Note:If any JNP10K-PWR-AC2 power supply is set to 20 A, then the power budget for all power supplies installed in the system becomes 20 A, regardless of whether other power supplies are set at 30 A. This design is to prevent overloading of the power supply that is set to 20 A. See Table 2 for details on setting the DIP switches.
-
Determine the total power required for your configuration with line
cards installed. The total power available to the chassis is calculated
by dividing the wattage needed by the power rating, and then rounding
up.
In the previous examples, we calculated that an MX10004-PREMIUM system requires 10082 W with four MX10K-LC9600 line cards. In this example, we calculate the total power available for two JNP10K-PWR-AC2 power supplies set for dual feed and low power in an MX10004-PREMIUM configuration:
10082 W (premium system) / 3000 W (6000 W total, 3000 per device) = 3.36
Round up the result to three JNP10K-PWR-AC power supplies. An MX10004-PREMIUM redundant AC system then has a sufficient number of power supplies.
- Calculate how much power the power supplies need. To determine the power required, multiply the number of power supplies by the power supply wattage that each supply requires. Then, divide by the efficiency of the power supply. The efficiency rate accounts for the loss of energy within the power supply and is 89 percent for power supplies running in MX10004 routers.