Users Guide

(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
PoE or PoE+
Power Budge
Limit
Model Name System Power
Maximum
Dissipation
One PSU
Support
One PSU
Support
Two PSUs
Support
Two PSUs
Support
C1048P 110 W
Maximum PSU
Output Ability
1000 W
PoE+ power
turn on
limitation
Power budget
is 850 W: The
total PoE supply
power available
is 850 W.
Maximum PSUs
output ability
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. PoE is not supported in
the C1048P port extender.
Table 68. Maximum Number of PoE and PoE+ Ports
Number of PSUs Maximum number of PoE+ Ports Maximum Number of PoE Ports
1 28 48
2 48 48
826
Power over Ethernet (PoE)