Alcatel OS6855-24 User Guide - Page 143

Installing and Managing Power over Ethernet (PoE) Configuring Power over Ethernet Parameters To increase or decrease the total power available to a slot, use the lanpower maxpower command. Since you are setting the power allowance for an individual slot, you must specify a slot number in the command line. For example, the syntax -> lanpower 1 maxpower 40 reduces the power allowance of the OmniSwitch 6850 Series slot 1 to 40 watts. This value is now the maximum amount of power the slot can use to power all attached devices (until the value is modified by the user). Note. Changing the maximum power available to a slot or port does not reserve or immediately allocate that power. These settings are only used for configuring a maximum amount of power that may be used, any unused power is still available and remains a part of the overall PoE budget. Setting Port Priority Levels As not all Powered Devices (PDs) connected to the switch have the same priority within a customer network setting, the OmniSwitch 6855 Series switches allow the user to specify priority levels on a portby-port basis. Priority levels include low, high, and critical. The default priority level for a port is low. • Low. This default value is used for port(s) that have low-priority devices attached. In the event of a power management issue, inline power to low-priority is interrupted first (i.e., before critical and highpriority). • High. This value is used for port(s) that have important, but not mission-critical, devices attached. If other in the chassis have been configured as critical, inline power to high-priority is given second priority. • Critical. This value is used for port(s) that have mission-critical devices attached, and therefore require top (i.e., critical) priority. In the event of a power management issue, inline power to critical is maintained as long as possible. To change the priority level for a particular port, use the lanpower priority command. Since the switch allows you to set priority levels on a port-by-port basis, be sure to specify slot/port information in the command line. For example, the syntax -> lanpower 1/1 priority critical changes the priority value of port 1 to the highest priority level of critical. Now that the default value has been reconfigured, this port should be reserved for those PDs that are mission critical for network operations. OmniSwitch 6855 Series Hardware Users Guide September 2011 page 6-7