Understanding Power Supplies ! 221
Chapter 18: Monitoring Power Supplies
M10i Router Power Supplies
The M10i router uses either AC or DC power. You can install up to four load-sharing
power supplies at the bottom rear of the chassis. Figure 87 shows the M10i router
power supplies and where they are installed in the chassis.
The AC power supplies are fully redundant. If one power supply fails or is removed,
the remaining power supplies instantly assume the entire electrical load. Two power
supplies can provide full power for as long as the router is operational. Three power
supplies are required for redundancy. Power supplies must be present in slots
P/S 0
and
P/S 1 for the router to operate.
The DC power supplies are fully redundant. The DC power supplies in slots
P/S 0
and
P/S 1 can provide full power to the router. Likewise, the DC power supplies in
slots
P/S 2 and P/S 3 can also provide full power. The DC power supplies in slots
P/S 2 and P/S 3 jointly serve as the backup to the DC power supplies in slots P/S 0
and
P/S 1. Power supplies must be present in slots P/S 0 and P/S 1 for the router
to operate.
Figure 87: M10i Router Power Supplies
g002234
M10i router rear
F
A
N
T
R
A
Y
O
F
A
N
T
R
A
Y
1
N
O
T
E
:
C
-
F
E
B
0
C
-
F
E
B
1
P
/
S
3
P
/
S
2
P
/
S
1
P
/
S
0
P
/
S
0
A
N
D
P
/S
1
M
U
S
T
B
E
P
R
E
S
E
N
T
F
O
R
N
O
R
M
A
L
O
P
E
R
A
T
IO
N
.
PEM0
PEM1
PEM3
PEM2
DC power supply
AC power supply
CAUTION
Energy hazard
from
contacting co
mponents
on midplane
or in card cag
e.
U
S
E
C
O
P
P
E
R
C
O
N
D
U
C
T
O
R
S
R
T
N
-4
8
V
1
0
A
Power supplies
NOTE: AC and DC power supplies are required in slots P/S 0 and P/S 1 for the
router to operate.
The DC power supplies in slots
P/S 0 and P/S 1 must be powered by dedicated
power feeds derived from feed A, and the DC power supplies in slots
P/S 2 and
P/S 3 must be powered by dedicated power feeds derived from feed B. This
configuration provides the commonly deployed
A/B feed redundancy for the
system.
To Next Page
Loading...
Need help?
General
