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SRX550 Services Gateway Power over Ethernet


Power over Ethernet (PoE) supports the implementation of the IEEE802.3 af and IEEE802.3 at standards, which allow both data and electric power to pass over a copper Ethernet LAN cable.

The SRX550 Services Gateway provides PoE ports, which supply electric power over the same ports that are used to connect network devices. PoE ports allow you to plug in devices that require both network connectivity and electric power, such as Voice over IP (VoIP) and IP phones and wireless access points.

The PoE ports for the SRX550 Services Gateway reside on the individual XPIMs. The SRX550 Services Gateway supports the following XPIMs with PoE:

  • 16-Port Gigabit Ethernet XPIM

  • 24-Port Gigabit Ethernet XPIM

The Services and Routing Engine (SRE) manages the overall system PoE power. You can configure the services gateway to act as power sourcing equipment to supply the power to the GPIMs connected on the designated PoE ports.

Table 1 lists the SRX550 Services Gateway PoE specifications.

Table 1: SRX550 Services Gateway PoE Specifications

Power Management Schemes


Supported standards

  • IEEE802.3 af

  • IEEE802.3 at

  • Legacy

Supported slots

PoE is supported on the following front panel slots:

  • 3

  • 4

  • 6

  • 8

For more information, see SRX550 Services Gateway Front Panel.

Total PoE power sourcing capacity

The 645 W AC and 645 W DC power supplies support the following capacities:

  • 255 W PoE on a single power supply, or with redundancy using the two power supply option

  • 510 W PoE using the two power supply option operating as nonredundant

Per-port power limit

31.2 W

Power management modes

  • Static: Power allocated for each interface can be configured

  • Class: Power allocation for interfaces is decided based on the class of powered device connected

For details about the GPIMs and XPIMs, see the SRX Series Services Gateways for the Branch Physical Interface Modules Hardware Guide  .