Table 19: Power Zone Fault Tolerance - Juniper PTX Series Hardware Manual

Table 19: Power Zone Fault Tolerance

Zone
0
1
2
Related
Documentation
Copyright © 2012, Juniper Networks, Inc.
Nonredundant Configuration
One in either PDU can provide power
PSM0
to all fan trays.
If the nonredundant PSM in this zone is
not powered on, the fan trays are not
powered on, and the packet transport
switch will not be powered on.
If the nonredundant PSM in this zone fails,
the fan trays are not powered on, which
will cause the packet transport switch to
be powered off.
One in either PDU can provide power
PSM1
to the craft interface, both host subsystems,
both CCGs, and all nine SIBs.
If the nonredundant PSM in this zone is
not powered on, the craft interface, host
subsystems. CCGs, and SIBs are not
powered on.
If the nonredundant PSM in this zone fails,
the craft interface, host subsystems.
CCGs, and SIBs are powered off.
One to four FPCs: One or
PSM2
either PDU can provide nonredundant power
for up to four FPCs.
and in the same PDU is
PSM2 PSM3
nonredundant.
Five to eight FPCs: Two PSM in either PDU
can power up to eight FPCs.
PSM2 and PSM3 in the same PDU is
nonredundant.
CAUTION: Three PSMs are nonredundant.
PTX5000 Power Distribution Unit LEDs on page 42
PTX5000 Power Supply Module LEDs on page 43
Connecting DC Power to the PTX5000 Packet Transport Switch on page 94
Powering On the DC Powered PTX5000 Packet Transport Switch on page 96
Maintaining the PTX5000 Power System on page 113
Troubleshooting the PTX5000 Power System on page 139
Chapter 3: PTX5000 Hardware Components Overview
Redundant Configuration
The in
PSM0 PDU0
required for full power redundancy.
If neither PSM in this zone is powered on, the fan
trays are not powered on, and the packet transport
switch will not be powered on.
If both PSMs in this zone fail, the fan trays are not
powered on, which will cause the packet transport
switch to be powered off.
If one PSM in this zone is powered off or fails, the
configuration becomes nonredundant.
The in
PSM1 PDU0
required for full power redundancy.
If neither PSM in this zone is powered on, the craft
interface, host subsystems, CCGs, and SIBs are
not powered on.
If PSM1 in PDU0
craft interface, host subsystems, CCGs, and SIBs
are powered off.
If PSM1 in PDU0
the craft interface, host subsystems, CCGs, and
SIBs are not powered on.
in For full power redundancy for up to four FPCs, two
PSM3
PSM in different PDUs is required.
NOTE: The PSM must be in different PDUs for full
power redundancy.
For full power redundancy for five to eight FPCs, all
four PSM– PSM2
–must be present and fully functional for full
PDU1
power redundancy.
If all four PSM in this zone fail, the FPCs are powered
off.
and the in are both
PSM0 PDU1
and the in are both
PSM1 PDU1
and PSM1 in PDU1 both fail, the
and PSM1 in PDU1 are not online,
and PSM3 in both PDU0 and
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