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management

 

Syntax

Hierarchy Level

Release Information

Statement introduced in Junos OS Release 9.0 for EX Series switches.

Statement introduced in Junos OS Release 12.2 for ACX2000 Universal Metro Routers.

Statement introduced in Junos OS Release 17.2R1 for a Junos Fusion Provider Edge.

Description

Designate how the PoE controller allocates power to the PoE interfaces.

Default

class

Options

  • class—The amount of power allocated to the interface is based on the class of the connected powered device. If LLDP power negotiation is enabled, the powered device can request more or less power. LLDP power negotiation is enabled by default in class management mode.

    If LLDP power negotiation is disabled, the power allocation is determined solely by the class of the connected powered device. If there is no powered device connected, standard 15.4W power is allocated on the interface. For more information about power allocation, see Understanding PoE on EX Series Switches.

  • static—The amount of power allocated to the interface is determined by the value of the maximum-power statement, not the class of the connected powered device. This amount is allocated even when a powered device is not connected to the interface, ensuring that power is available when needed.

    Note

    Static mode is not supported in PoE-bt.

  • high-power—(ACX2000 routers only) ACX2000 PoE interfaces support power delivery of up to 65 W per port using all four pairs of Ethernet RJ45 cables. Traditional PoE ports use only two pairs of Ethernet cable for power delivery. According to the IEEE 802.3af standard, each port can deliver a maximum power of up to 32 W. With high-power mode of power delivery over all four pairs, the power sourcing equipment (PSE) has an option to deliver up to 65 W per port, provided the powered devices request this high power over all four pairs of the Ethernet cable. By default, high-power mode is not enabled and has to be explicitly enabled. When the PoE controller is configured for high-power mode, the PoE controller does not deliver power to normal powered devices that request power over two pairs.

Required Privilege Level

system—To view this statement in the configuration.

system-control—To add this statement to the configuration.