Manage Ports Using Power Priority And The Power Budget; Determine The Power Priority For A Port - Dell Force10 C150 Configuration Manual

Table 36-4 describes the fields that the
Table 36-4. show power detail Field Description
Field
Unit
Catalog Name
Slot ID
Total Power Available
Logic Power Consumed
Inline Power Available
Inline Power Allocated
Inline Power Consumed
Inline Power Remaining

Manage Ports using Power Priority and the Power Budget

The allocation and return of power on ports depends on the total inline power available in the system and
the power priority calculation.

Determine the Power Priority for a Port

FTOS uses a sophisticated port prioritization algorithm for determining which ports receive PoE so that
PoE ports are powered up/down deterministically.
FTOS uses the following four parameters, in order, for defining the power priority for a port:
power-inline
1. the
power-inline priority
2. the
3. the LLDP-MED priority sent by the PD in the Extended Power-via-MDI TLV,
4. and the port's slot and port number.
FTOS maintains a sorted list of PoE ports based these four parameters. Static ports have a higher weight
than auto mode ports, so all static ports always stay on top of all auto ports regardless of the other 3
parameters. Within the set of static ports, FTOS attempts to order them based on the second parameter
power-inline priority
show power detail
Port Number
(S-Series only) The stack member unit ID.
(C-Series only) Displays the component's Dell Force10 catalog number.
(C-Series only) Displays the slot number in which the line card or RPM is installed.
The total power available in the stack member or chassis.
Note: On the S-Series a maximum of 790W can be allocated for PoE, even if you add the 470W
external power supply.
The power consumed by the system logic.
Power available for PoE (whatever was configured using
watts
Total power allocated to the ports.
Total power consumed by connected devices.
Difference between power available and power allocated.
static auto
mode: or ,
configuration,
, the default of which is "Low". If FTOS finds multiple ports with the same
command displays.
power-budget
command. Default: 320
Power over Ethernet | 789