Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 745

Power Management Mode: Static Interface Inline Power Inline Power Class Device PoE Port LLDP Max / Alloc Consumed Type Priority Support (Watts) (Watts) PeGi 0/0/0 30.00/0.00 0.00 NO_PD - critical 0 Monitor the Power Budget The power budget is the amount of power available from the installed PSUs minus the power required to operate the port extender. To help determine if power is available for additional PoE or PoE+ ports, use the show power inline and show power detail commands. For information about these commands, see Displaying PoE Power Allocation. The C1048P PE has one 1000 W fixed PSU and one external power supply with a capacity of 1000 W. The power required for system components is 150 W. The power available for PoE or PoE+ is calculated after excluding the power needed for system components and power redundancy. The following table defines the power budgeting for PE. In this table, 150 W from the fixed PSU and EPS are reserved for system power and redundancy. The remaining 850 W from each PSU is allotted for PoE or PoE+. Table 67. Power Budgeting for the PE Model Name C1048P System Power Maximum Dissipation 110 W One PSU Support PoE or PoE+ Power Budge Limit One PSU Support Two PSUs Support Two PSUs Support Maximum PSU Output Ability 1000 W PoE+ power turn on limitation Maximum PSUs output ability Power budget is 850 W: The total PoE supply power available is 850 W. 2000 W PoE power turn on limitation Power budget is 1700 W All PoE+ ports can be turned on. The following table shows the maximum number of ports that you can configure for PoE and PoE+ based on the number of PSUs available. NOTE: The table assumes maximum of 30 W for PoE+ and 15.4 W for PoE. Table 68. Maximum Number of PoE and PoE+ Ports Number of PSUs Maximum number of PoE+ Ports 1 28 2 48 Maximum Number of PoE Ports 48 48 Enabling PoE or PoE+ on more ports than the power budget supports produces one of the following results: • If the newly PoE or PoE+ -enabled port has a lower priority, the command is accepted but power is not allocated to the port. In this case, the following message displays: %Warning: Insufficient power to enable. POE oper-status set to OFF for port. • If the newly PoE or PoE+ -enabled port has a higher priority, the command is accepted and power is terminated on the lowest priority port in the power extender. If you add another PSU to the system later, both ports receive power. Power over Ethernet (PoE) 745