Technical Documentation

show chassis power

Syntax

show chassis power

Release Information

Command introduced in JUNOS Release 10.0

Description

(MX Series Ethernet Services Routers only) Display power limits and usage information for the AC or DC Power Entry Modules (PEMs).

Options

This command has no options.

Required Privilege Level

view

List of Sample Output

show chassis power (MX960 Router with DC PEM)
show chassis power (MX960 Router with AC PEM)
show chassis power (MX480 Router with AC PEM)
show chassis power (MX240 Router with DC PEM)

Output Fields

Table 1 lists the output fields for the show chassis power command. Output fields are listed in the approximate order in which they appear.

Table 1: show chassis power Output Fields

Field Name

Field Description

PEM number

AC or DC PEM number on the chassis. The following output fields are displayed for the PEM:

  • State—State of the PEM:
    • Online—PEM is present in the slot and online.
    • Empty—PEM is not present in the slot.
    • Present—PEM is present in the slot, but not online.
  • AC/DC Input—OK or Check—State of the AC or DC input power feed with the number of active and expected feeds (one or two).

    For a DC input power feed, this output field also displays the reference voltage input with maximum input voltage displayed in mV in parentheses for the AC or DC PEM.

  • Capacity—Actual power input capacity with maximum capacity displayed in parentheses, in watts.

    Note: The maximum capacity for AC and DC PEMS is:

    • MX960 AC PEM—4100W if two feeds are connected. 1700W if one feed is connected.
    • MX960 DC PEM—4100W if two feeds are connected. 1700W if one feed is connected.
    • MX480 AC PEM—2520W if it is high-line. 1450W if it is low-line.
    • MX480 DC PEM—2400W if dip-switch is on. 2350W if dip-switch is off.
  • DC Output—DC power output in Watts for the specified zone, at the specified amps and voltage (A @ V), and load and percentage utilization of the maximum capacity) for the zone.

System

Overall power statistics for the system zone-wise:

  • Zone number:
    • Capacity—Maximum power capacity applicable for the zone, in watts.
    • Allocated power—Actual capacity allocated for the zone, in watts, with remaining power displayed in parentheses.
    • Actual usage—Actual power usage for the zone, in watts.
  • Total system capacity—Cumulative power capacity of all the zones, in watts.
  • Total remaining capacity—Difference between the Total system capacity and cumulative Allocated power of all the zones, in watts.

Sample Output

show chassis power (MX960 Router with DC PEM)

user@host> show chassis power
PEM 0:
  State:     Online
  DC input:  OK (1 feed expected, 1 feed connected)
  DC input:  48.0 V input (51500 mV)
  Capacity:  2800 W (maximum 2800 W)
  DC output: 306 W (zone 0, 6 A at 51 V, 10% of capacity)
 
PEM 1:
  State:     Online
  DC input:  OK (1 feed expected, 1 feed connected)
  DC input:  48.0 V input (51000 mV)
  Capacity:  2800 W (maximum 2800 W)
  DC output: 459 W (zone 1, 9 A at 51 V, 16% of capacity)
 
PEM 2:
  State:     Empty
  Input:     Absent
 
PEM 3:
  State:     Empty
  Input:     Absent
 
System:
  Zone 0:
      Capacity:          2800 W (maximum 2800 W)
      Allocated power:   540 W (2260 W remaining)
      Actual usage:      306 W
  Zone 1:
      Capacity:          2800 W (maximum 2800 W)
      Allocated power:   905 W (1895 W remaining)
      Actual usage:      459 W
  Total system capacity: 5600 W (maximum 5600 W)
  Total remaining power: 4155 W

show chassis power (MX960 Router with AC PEM)

user@host> show chassis power
PEM 0:
  State:     Online
  AC input:  OK (2 feed expected, 2 feed connected)
  Capacity:  4100 W (maximum 4100 W)
  DC output: 0 W (zone 0, 0 A at 56 V, 0% of capacity)

PEM 1:
  State:     Present
  AC input:  Check (2 feed expected, 1 feed connected)
  Capacity:  1700 W (maximum 4100 W)

PEM 2:
  State:     Empty
  Input:     Absent

PEM 3:
  State:     Online
  AC input:  OK (1 feed expected, 1 feed connected)
  Capacity:  1700 W (maximum 1700 W)

System:
  Zone 0:
      Capacity:          4100 W (maximum 4100 W)
      Allocated power:   540 W (3560 W remaining)
      Actual usage:      0 W
  Zone 1:
      Capacity:          0 W (maximum 0 W)
      Allocated power:   0 W (0 W remaining)
      Actual usage:      0 W
  Total system capacity: 4100 W (maximum 4100 W)
  Total remaining power: 3560 W

show chassis power (MX480 Router with AC PEM)

user@host> show chassis power
PEM 0:
  State:     Online
  AC input:  OK (1 feed expected, 1 feed connected)
  Capacity:  2520 W (maximum 2520 W)
  DC output: 472 W (zone 0, 8 A at 59 V, 18% of capacity)

PEM 1:
  State:     Online
  AC input:  OK (1 feed expected, 1 feed connected)
  Capacity:  2520 W (maximum 2520 W)
  DC output: 472 W (zone 0, 8 A at 59 V, 18% of capacity)

PEM 2:
  State:     Online
  AC input:  OK (1 feed expected, 1 feed connected)
  Capacity:  2520 W (maximum 2520 W)
  DC output: 118 W (zone 0, 2 A at 59 V, 4% of capacity)

PEM 3:
  State:     Empty
  Input:     Absent

System:
  Maximum capacity:   5040 W
  Allocated capacity: 1675 W (33% of maximum)
  Remaining capacity: 3365 W
  Actual usage:       1062 W

show chassis power (MX240 Router with DC PEM)

user@host> show chassis power
PEM 0:
  State:     Online
  DC input:  OK (1 feed expected, 1 feed connected)
  DC input:  48.0 V input (53500 mV)
  Capacity:  2400 W (maximum 2400 W)
  DC output: 318 W (zone 0, 6 A at 53 V, 13% of capacity)

PEM 1:
  State:     Online
  DC input:  OK (1 feed expected, 1 feed connected)
  DC input:  48.0 V input (54000 mV)
  Capacity:  2400 W (maximum 2400 W)
  DC output: 0 W (zone 0, 0 A at 54 V, 0% of capacity)

PEM 2:
  State:     Online
  DC input:  OK (1 feed expected, 1 feed connected)
  DC input:  48.0 V input (52500 mV)
  Capacity:  2400 W (maximum 2400 W)
  DC output: 312 W (zone 0, 6 A at 52 V, 13% of capacity)

PEM 3:
  State:     Online
  DC input:  OK (1 feed expected, 1 feed connected)
  DC input:  48.0 V input (55000 mV)
  Capacity:  2400 W (maximum 2400 W)
  DC output: 0 W (zone 0, 0 A at 55 V, 0% of capacity)

System:
  Maximum capacity:   2400 W
  Allocated capacity: 1270 W (52% of maximum)
  Remaining capacity: 1130 W
  Actual usage:       630 W

Published: 2010-04-27