ECS4110-28T_Management Guide

C HAPTER 14 | Basic Administration Protocols
Power over Ethernet
– 450 –
3. Set the maximum PoE power provided by the switch, and enable the
compatible mode if required.
4. Click Apply.
Figure 244: Setting the Switch’s PoE Budget
SETTING THE PORT
POE POWER BUDGET
Use the Administration > PoE > PSE (Configure Interface) page to set the
maximum power provided to a port.
CLI REFERENCES
◆ "Power over Ethernet Commands" on page 1035
◆ "Time Range" on page 782
COMMAND USAGE
◆ This switch supports both the IEEE 802.3af PoE and IEEE 802.3at-2009
PoE Plus standards. To ensure that the correct power is supplied to
powered devices (PD) compliant with these standards, the first
detection pulse from the switch is based on 802.3af to which the
802.3af PDs will respond normally. It then sends a second PoE Plus
pulse that causes an 802.3at PD to respond as a Class 4 device and
draw Class 4 current. Afterwards, the switch exchanges information
with the PD such as duty-cycle, peak and average power needs.
◆ For the ECS4110-28P, the total PoE power delivered by all ports cannot
exceed the maximum power budget of 390W. For the ECS4110-52P, the
total PoE power delivered by all ports cannot exceed the maximum
power budget of 400W. All the RJ-45 ports support both the IEEE
802.3af and IEEE 802.3at standards. The maximum number of ports
which can supply power simultaneously at the specified levels are
shown in the following table.
Table 31: Maximum Number of Ports Providing Simultaneous Power
Switch 34.2W (802.3at) 15.4W (802.3af) 7.5W (802.3af)
ECS4110-28P 11 24 24
ECS4110-52P 11 25 48