Configuring PoE Settings on the SRX Series Services Gateway (CLI Procedure)

You can modify Power over Ethernet (PoE) settings on the SRX series devices using the CLI configuration editor.

To configure PoE:

  1. Navigate to the top of the configuration hierarchy in the CLI configuration editor.
  2. Perform the configuration tasks described in Table 298.
  3. Commit the configuration when you have completed it.

Table 298: Configuring PoE Settings Using the CLI

Task

CLI Configuration Editor

Meaning

Enable PoE

From the [edit] hierarchy level:

  • For all PoE interfaces user@host> set poe interface all
  • For specific PoE interfaces user@host> set poe interface ge-0/0/0

Enables a PoE interface. The PoE interface must be enabled in order for the port to provide power to a connected powered device.

Disable PoE

From the [edit] hierarchy level:

  • For all PoE interfaces ser@host> set poe interface all disable
  • For specific PoE interfaces user@host> set poe interface ge-0/0/0 disable

Disables a PoE interface.

Set the power port priority

From the [edit] hierarchy level:

  • For all PoE interfaces user@host> set poe interface all priority low
  • For specific PoE interfaces user@host> set poe interface ge-0/0/0 priority high

Sets the priority of individual ports. When it is not possible to maintain power to all connected ports, lower-priority ports are powered off before higher-priority ports. When a new device is connected on a higher-priority port, a lower-priority port will be powered off automatically if available power is insufficient to power on the higher-priority port.

Note: For the ports with the same priority configuration, ports on the left are given higher priority than the ports on the right.

Set the maximum PoE wattage available power for a port

From the [edit] hierarchy level:

  • For all PoE interfaces user@host> set poe interface all maximum-power 14
  • For specific PoE interfaces user@host> set poe interface ge-0/0/0 maximum power 12.8

Note: The default wattage per port is 15.4 watts.

Sets the maximum amount of power that can be supplied to the port.

Enable logging of PoE power consumption with the default telemetries settings

From the [edit] hierarchy level:

  • For all PoE interfaces user@host> set poe interface all telemetries
  • For specific PoE interfaces user@host> set poe interface ge-0/0/0 telemetries

Allows logging of per-port PoE power consumption. The telemetries section must be explicitly specified to enable logging. If left unspecified, telemetries is disabled by default.

Default values for telemetries:

  • Duration: 1 hour
  • Interval: 5 minutes

Set the PoE power management mode

From the [edit] hierarchy level:

  • set poe management classuser@host> set poe management class
  • set poe management static user@host> set poe management static
  • Class—When a powered device is connected to a PoE port, the power allocated to it is equal to the maximum power for the class as defined by the IEEE standards.
  • Static—When a powered device is connected to a PoE port, the power allocated to it is equal to the maximum power configured for the port.

Reserve a specified wattage of power for the gateway in case of a spike in PoE consumption (default is 0)

From the [edit] hierarchy level:

For all PoE interfaces user@host> set poe guard-band 15

Reserves the specified amount of power for the gateway in case of a spike in PoE consumption.

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