794 | Power over Ethernetw w w . d e l l . c o m | s u p p o r t . d e l l . c o m Figure 36-5. Order of PoE TerminationFor the configuration in Figure 36-2:• Power for ports 7/1 and 7/2 is terminated first because it is configured with inline power auto.• Power for port 7/2 is terminated before PoE for port 7/1 because port 7/1 has a lower port number.• Power for port 7/0 is terminated last because it is configured with inline power static.When a failed PSU is replaced and there is sufficient power for PoE, power is automatically re-supplied forpreviously configured PoE ports, and power is supplied first to ports with the highest priority.Figure 36-6. Order of PoE Re-SupplyPower Additional PoE Ports on the S-SeriesBy default, 320 Watts is available for PoE on the S50V and S25V models of the S-Series. You have theoption of enabling more power by connecting the external Dell Force10 DC 470W Redundant PowerSupply to the Current Sharing terminal of the S50V and S25V. This power supply is in backup mode bydefault, but you can use the power budget stack-unit command to allow that external power supply to beused for powering PoE ports. 790W is the maximum that you can allocate to PoE, although the combinedoutput of the internal AC power supply and the external DC power supply is 940W. That external powersupply is the only power supply that you can use to add power for PoE with the S-Series.Message 28 appears if you attempt to use the power budget command when an external power supply isnot connected.Message 2 External Power Supply Not Found% Error: External power supply not found or incompatible external power supply.012Terminate PoE012Re-supply
