Description:

The LANCOM switches ES-2126P+, GS-1224P, GS-2326P(+), GS-2352P, GS-2328P and GS-2310P(+) have the option of supplying power over Ethernet (PoE) on all Ethernet ports.

The devices' PoE function provides an overall power output of 185 Watts, which can be distributed dynamically between the ports. This is set up in the appropriate configuration dialog.

The LANCOM GS-2352P and LANCOM GS-2328P provides 370 Watts PoE power output. The LANCOM GS-2310P(+) provides 130 Watts PoE power output.

This document describes how to configure the PoE power distribution for the switches, and how the switches handle a total load in excess of 185 Watts (for LANCOM ES-2126P+, LANCOM GS-1224P, LANCOM GS-2326P(+)) or 370 Watts (for LANCOM GS-2352P) and 130 Watts (for LANCOM GS-2310P).


Requirements:
  • The latest firmware (download)
  • Web browser


Configuring PoE power distribution for LANCOM ES-2126+ and LANCOM GS-1224P:

1) Open a web browser window and enter the IP address of the switch.
    Information:
    As an alternative, you can double-click on the switch in LANconfig .
    The configuration interface for the switch automatically starts in the web browser.
2) Log in to the device with your user name.

3) Navigate to the menu PoE -> Configuration.

4) You can adjust the PoE settings in this menu.

Information:
  • The switch is compatible with the IEEE 802.3af protocol and is able to detect automatically whether a device connected to it is a powered device (PD).
  • When the switch and the powered device (PD) negotiate the PoE class, the switch makes no reservation of the maximum power required by the PD. Instead, the switch continuously monitors the PD's actual power consumption and reacts accordingly (e.g. when the switch's maximum PoE power of 185 watts is exceeded, the PoE ports are deactivated in the order set by the assigned priorities).
  • The switch automatically supplies power to the powered device (PD) according to its PoE class; otherwise the supply is interrupted if power consumption exceeds that specified for the PD's PoE class, if the PD short circuits, or if the PD overheats.

    Status:
    This value can be either Normal or Active . The status Normal means that the port is ready to be connected to a powered device (PD) and to supply it with power. The status Active means that the port is already connected and is supplying power to a device.

    State:
    The status Enable displays the ability of the port to supply power to a powered device (PD). The status Disable means that the PoE capability has been switched off for this port.

    Priority:
    You can choose between three options: Normal, Low and High. Normal is the default setting. Should the total power demanded by the ports exceed the maximum power that the switch can supply (185 watts), the switch will turn off the ports according to the priority set here ( Low -> Normal -> High ) . If the power limit is exceeded and all ports have the same priority , the switch will turn them off starting with at the highest port ID ( port 24 -> port 1 ).

    Power (W):
    This value displays the power consumed by the port.

    Current (mA):
    This value displays the current supplied to the powered device (PD).

    Class:
    This value displays the PoE Class (0-4) of the PD connected with this port. An overview of PoE classes as per IEEE 802.3af is available at the end of this document.




Configuring PoE power distribution for LANCOM GS-2326P(+), LANCOM GS-2352P, LANCOM GS-2328P and LANCOM GS-2310P(+):

1) Open a web browser window and enter the IP address of the switch.
    Information:
    As an alternative, you can double-click on the switch in LANconfig .
    The configuration interface for the switch automatically starts in the web browser.

2) Log in to the device with your user name.

3) Navigate to the menu Configuration - > PoE -> Power over Ethernet Configuration.

4) You can adjust the PoE settings in this menu.

    Information:
    • The switch is compatible with the IEEE 802.3af and IEEE 802.3at protocol and is able to detect automatically whether a device connected to it is a powered device (PD).
    • When the switch and the powered device (PD) negotiate the PoE class, the switch makes no reservation of the maximum power required by the PD. Instead, the switch continuously monitors the PD's actual power consumption and reacts accordingly (e.g. when the switch's maximum PoE power of 185 watts is exceeded, the PoE ports are deactivated in the order set by the assigned priorities).
    • The switch automatically supplies power to the powered device (PD) according to its PoE class; otherwise the supply is interrupted if power consumption exceeds that specified for the PD's PoE class, if the PD short circuits, or if the PD overheats.

        Retry Time:
        Here you set the time (in seconds), after which the switch tries to reactivate an overloaded PoE port.


        PoE Mode:
        The Enabled status describes the ability of the port to supply power to a powered device (PD). The Disabled status means that the PoE capability is turned off at this port.


        Priority:
        You can choose between three options: Low , High and Critical . The default setting is Low .


        Maximum Power (W):
        The value for the maximum power (in Watts) that can be supplied to a powered device (PD) is entered in this field.
          Information:
          If you want to operate PoE as per IEEE802.3at on a port, you must enter the maximum power output of 30 W into this box (also see the table of PoE classes at the end of this document).


Overview of PoE classes:

When a powered device (PD) is connected, the switch measures the power requirement of the device. The power requirement of the PDs according to IEEE 802.3af and IEEE 802.3at PoE is divided into the following categories: