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Junos CLI Reference
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{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
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show chassis environment cb (Security)

date_range 20-May-24

Syntax

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show chassis environment cb 
<slot>

Description

Display environmental information about the Control Boards (CBs) installed on SRX Series Firewalls.

Options

slot

(Optional) Display environmental information about the specified CB.

Required Privilege Level

view

Output Fields

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

Table 1: show chassis environment cb Output Fields

Field Name

Field Description

State

Status of the CB. If two CBs are installed and online, one is functioning as the primary, and the other is the standby.

  • Online—CB is online and running.

  • Offline— CB is powered down.

Temperature

Temperature in Celsius (C) and Fahrenheit (F) of the air flowing past the CB.

  • Temperature Intake—Measures the temperature of the air intake to cool the power supplies.

  • Temperature Exhaust—Measures the temperature of the hot air exhaust.

Power

Power required and measured on the CB. The left column displays the required power, in volts. The right column displays the measured power, in millivolts.

BUS Revision

Revision level of the generic bus device.

FPGA Revision

Revision level of the field-programmable gate array (FPGA).

PMBus device

Enhanced SCB on SRX Series Firewalls allows the system to save power by supplying only the amount of voltage that is required. Configurable PMBus devices are used to provide the voltage for each individual device. There is one PMBus device for each XF ASIC so that the output can be customized to each device. The following PMBus device information is displayed for devices with Enhanced MX SCB:

  • Expected voltage

  • Measured voltage

  • Measured current

  • Calculated power

Sample Output

show chassis environment cb (SRX5600 devices with SRX5K-SCB3 [SCB3] and Enhanced Midplanes)

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user@host> show chassis environment cb node 0
node0:
--------------------------------------------------------------------------
--------------------------------------------------------------------------
CB 0 status:
  State                      Online Master
  Temperature                34 degrees C / 93 degrees F
  Power 1
    1.0 V                       1002
    1.2 V                       1198
    1.5 V                       1501
    1.8 V                       1801
    2.5 V                       2507
    3.3 V                       3300
    5.0 V                       5014
    5.0 V RE                    4982
    12.0 V                     11988
    12.0 V RE                  11930
  Power 2
    4.6 V bias MidPlane         4801
    11.3 V bias PEM            11292
    11.3 V bias FPD            11272
    11.3 V bias POE 0          11214
    11.3 V bias POE 1          11253
  Bus Revision               96
  FPGA Revision              16
  PMBus             Expected   Measured   Measured  Calculated
  device            voltage    voltage    current   power
    XF ASIC A        1033 mV    1033 mV   15500 mA   16011 mW
    XF ASIC B        1034 mV    1033 mV   15000 mA   15495 mW

show chassis environment cb node 1 (SRX5600 devices with SRX5K-SCB3 [SCB3] and Enhanced Midplanes)

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user@host> show chassis environment cb node 1
node1:
--------------------------------------------------------------------------
CB 0 status:
  State                      Online Master
  Temperature                35 degrees C / 95 degrees F
  Power 1
    1.0 V                       1002
    1.2 V                       1198
    1.5 V                       1504
    1.8 V                       1801
    2.5 V                       2507
    3.3 V                       3325
    5.0 V                       5014
    5.0 V RE                    4943
    12.0 V                     12007
    12.0 V RE                  12007
  Power 2
    4.6 V bias MidPlane         4814
    11.3 V bias PEM            11272
    11.3 V bias FPD            11330
    11.3 V bias POE 0          11176
    11.3 V bias POE 1          11292
  Bus Revision               96
  FPGA Revision              16
  PMBus             Expected   Measured   Measured  Calculated
  device            voltage    voltage    current   power
    XF ASIC A         958 mV     959 mV   13500 mA   12946 mW
    XF ASIC B        1033 mV    1031 mV   16500 mA   17011 mW

Release Information

Command introduced in Junos OS Release 9.2.

Starting with Junos OS Release 12.1X47-D15, the SRX5K-SCBE (SCB2) is introduced and starting with Junos OS Release 15.1X49-D10, the SRX5K-SCB3 (SCB3) with enhanced midplane is introduced.

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