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.
51.3 Comprehensive Configuration Example
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.
