3Com Switch 8800 Configuration Guide Chapter 51 PoE Configuration
51-4
To cancel the configurations, use the corresponding undo commands. For details
about the parameters, refer to the Command Manual.
Note:
z When setting the maximum PoE power supplied by the switch, you must set it to a
value greater than the total power that has been distributed to the cards. Otherwise,
the command cannot be executed successfully. The maximum power ranges from
3000 mW to 16800 mW.
z Before setting the maximum power supplied by a card, make sure the remaining
power of the switch is no less than the full power of the card, and the power you can
set for a card ranges from 37 W to 806 W.
z The reserved power for a blank slot will be recycled automatically by the system if
you insert a PoE-incapable card into the slot.
z When a card is almost fully loaded and a new PD is added, the switch will respond to
the PD according to the PoE priority set on the port.
z The PoE priority of each port is based on its card. In other words, the switch cannot
compare the priorities of ports on different cards.
I. Network requirements
z Two PoE-capable cards are installed in slots 3 and 5 on a Switch 8800.
z GigabitEthernet3/1/1 through GigabitEthernet3/1/48 are connected with IP
phones and GigabitEthernet5/1/1 through GigabitEthernet5/1/48 are connected
with access point (AP) devices.
z The IP phones connected to GigabitEthernet3/1/23 and GigabitEthernet3/1/24 do
not need PoE.
z GigabitEthernet3/1/48 is reserved for the use of network management, so it needs
higher priority.
z Slot 3 is provided with 400 W power and slot 5 is provided with full power.
z The input power of the AP device connected to GigabitEhternet5/1/15 cannot be
greater than 9000 mW.