Juniper Networks T1600 用户手册
Table 1: Components Powered by Each Three-Input 240-A Power Supply Input
Two-Input Mode
Three-Input Mode
Input
FPCs in slots
FPC0
and
FPC1
, SIBs, T-CBs,
fan trays, and Routing Engines
T1600-SIBs, T-CBs, fan trays, and
Routing Engines
Routing Engines
INPUT 0
FPCs in slots
FPC2
and
FPC7
FPCs in slots
FPC4
through
FPC7
INPUT 1
Not applicable
FPCs in slots
FPC0
through
FPC3
INPUT 2
Three-Input 240-A Power Supply Load Sharing and Fault Tolerance
When the routing node is operating normally and both power supplies are switched
on, load sharing between them occurs automatically. When one power supply fails
or is turned off, the other power supply immediately assumes the entire electrical
load for the system. A single power supply can provide full power for as long as the
routing node is operational. Table 2 on page 7 describes the behavior of the power
supply if one of the inputs fails.
on, load sharing between them occurs automatically. When one power supply fails
or is turned off, the other power supply immediately assumes the entire electrical
load for the system. A single power supply can provide full power for as long as the
routing node is operational. Table 2 on page 7 describes the behavior of the power
supply if one of the inputs fails.
Table 2: Fault Tolerance
Two-Input Mode
Three-Input Mode
Input
If this input fails,
INPUT 0
and
INPUT 1
shut down. The power supply shuts
down, and the other power supply
assumes the electrical load of
down, and the other power supply
assumes the electrical load of
INPUT 0
and
INPUT 1
.
If this input fails,
INPUT 0
,
INPUT 1
,
and
INPUT 2
shut down. The power
supply shuts down, and the other
power supply assumes the electrical
load for all three inputs.
power supply assumes the electrical
load for all three inputs.
INPUT 0
If this input fails,
INPUT 0
is
unaffected and
INPUT 1
shuts down.
The other power supply assumes the
electrical load of
electrical load of
INPUT 1
.
If this input fails,
INPUT 0
is
unaffected and
INPUT 1
and
INPUT 2
shut down. The other power supply
assumes the electrical load of
assumes the electrical load of
INPUT 1
and
INPUT 2
.
INPUT 1
Not applicable
If this input fails,
INPUT 0
is
unaffected and
INPUT 1
and
INPUT 2
shut down. The other power supply
assumes the electrical load of
assumes the electrical load of
INPUT 1
and
INPUT 2
.
INPUT 2
Three-Input 240-A Power Supply LEDs
LEDs on each power supply faceplate (see Figure 4 on page 8) indicate the status
of the power supply. In addition, a power supply failure triggers the red alarm LED
on the craft interface. Table 3 on page 8 describes the functions of the power supply
LEDs.
of the power supply. In addition, a power supply failure triggers the red alarm LED
on the craft interface. Table 3 on page 8 describes the functions of the power supply
LEDs.
T1600 Upgrade Kit
■
7
T1600 Upgrade Kit