Juniper MX2010 Hardware Manual page 225

The MX2010 DC power system provides power to the FRUs in the chassis (see
information about power). Each power system is made up of two DC PDMs, nine PSMs, ten MPCs, four
fan trays, eight SFBs, and two Control Board and Routing Engines (CB-REs).
When calculating power requirements, be sure that there is adequate power for the system.
Table 70: MX2010 DC Power System Sample Configuration
Chassis Power
Configuration
3 PSMs, 2 CB-REs, 8 SFBs,
and 4 fan trays (no line
cards installed)
10 Line cards
N+1 redundant system with
N+N redundancy for SFBs,
CB-REs, and 1 out of 2 fan
trays.
Power Distribution Power Supply
Modules (PDMs) Modules (PSMs)
PDM 0 and 1 3 PSMs
PDM 0 and 1 5 PSMs
PDM 0 and 1 9 PSMs
Table 70 on page 205
Description
The power consumed by
CB-REs and SFBs is 250 W
each.
The power consumed by 2
CB-REs and 8 SFBs is 2.5 KW.
The power consumed by fan
trays 0 and 1 is 2 KW and fan
trays 2 and 3 is 1 KW.
The total Kilowatts of power
consumed is 5.5 KW.
Each line card consumes up to
1 KW. One PSM is needed for
every set of 2 line cards.
This provides N+N redundnacy
for critical FRUs (CB-REs, SFBs,
and fan trays) and N+1
redundancy for line cards.
205
for