Juniper M120 Hardware Manual page 116

M120 Multiservice Edge Router Hardware Guide
90
Table 53: Component Power Requirements (continued)
Component
Cooling system (full speed)
AC power supply
DC power supply
FEB
Type 1 FPC (without PICs)
Type 2 FPC (without PICs)
Type 3 FPC (without PICs)
CFPCs
CB (and craft interface)
Routing Engine 1000
Routing Engine 1800
Routing Engine 2000
You can use the information in
various hardware configurations, input current from a different source voltage, and
thermal output, as shown in the following examples for a DC-powered router. These
examples use generalized values for PICs. For PIC power requirements, see the M120
Multiservice Edge Router Interface Module Reference.
Power consumption for minimum configuration:
Cooling system (normal speed) + 1 host subsystem with RE1000 + 1 Type 1 FPC + 1 FEB
+ 1 Type 1 PIC =
3.90 A + 1.52 A + 0.69 A + 1.79 A + 0.56 A = 8.46 A @ –48 VDC = 406 W DC
Power consumption for maximum DC-powered configuration :
Cooling system (high speed) + 2 host subsystems with RE2000 + 2 CFPC + 4 Type 2
FPCs + 6 FEBs + 16 Type 2 PICs =
5.11 A + 2 (1.48 A + .78 A) + 2 (1.12) + 4(0.92 A) + 6(1.79 A) + 16(1.05 A) =
5.11 A + 4.52 A + 2.24 A + 3.68 A + 10.74 A + 16.8 A = 43.09 A @ –48 VDC = 2,068 W DC
System thermal output for maximally configured DC-powered router:
Watts DC * 3.41 = BTU/hr
2,068 * 3.41 = 7052 BTU/hr
DC Power
Requirement
(Watts)
245 W
114 W
17 W
86 W
27 W
44 W
34 W
54 W
38 W
35 W
110 W
71 W
Table 53 on page 89 to calculate power consumption for
Copyright © 2018, Juniper Networks, Inc.
DC Current
Requirement
(Amps @
–48 VDC)
5.11 A
Not applicable
0.35 A
1.79 A
0.56 A
0.92 A
0.72 A
1.12 A
0.78 A
0.74 A
2.3 A
1.48 A