Alcatel OS6850-P48 User Guide - Page 156

Configuring Power over Ethernet Parameters Managing Power over Ethernet (PoE) Setting the PoE Operational Status Enabling PoE By default, Power over Ethernet is administratively enabled in the switch's system software. However, in order to physically activate PoE, you must issue the lanpower start command on a slot-by-slot basis before any connected PDs will receive inline power. To activate power to PoE-capable in a switch, enter the corresponding slot number only. For example: -> lanpower start 3 If power to a particular port has been disconnected via the lanpower stop command, you can reactivate power to the port by specifying both the slot and port in the command line. For example: -> lanpower start 3/11 Note. You cannot use the slot/port syntax to initially activate PoE on a port. This syntax is intended only to reactivate power to those that have been disconnected via the lanpower stop command. To initially activate PoE, you must use the lanpower start slot syntax only, as described above. Disabling PoE To disable PoE on a particular slot or port, use the lanpower stop command. To disable PoE on a specific PoE-capable port, enter a slot/port number. For example: -> lanpower stop 8/22 To disable PoE for all PoE-capable in a slot, enter the corresponding slot number only. For example: -> lanpower stop 8 Configuring the Total Power Available to a Port By default, each port is authorized by the system software to use up to a maximum amount of milliwatts to power any attached device. You can either increase or decrease this value based on the allowed ranges specified in Chapter 5, "Managing Power over Ethernet (PoE)." Increasing the total power available to an individual port may provide a more demanding Powered Device (PD) with additional power required for operation. Decreasing the total power available to a port helps to preserve inline power and assists in the overall management of the switch's power budget. To increase or decrease the total power available to an individual port, use the lanpower power command. Since you are setting the power allowance for an individual port, you must specify a slot/port number in the command line. For example, the syntax -> lanpower 3/12 power 3000 reduces the power allowance on slot 3 port 12 to 3000 milliwatts. This new value is now the maximum amount of power the port can use to power any attached device (until the value is modified by the user). page 5-6 OmniSwitch 6850/6850E Series Hardware Users Guide June 2011