User Manual

24-Port Gigabit (Hi-Power) PoE+ Ethernet Smart Managed Pro Switch with 2 SFP Ports
Configure System Information User Manual93
7. Select one or more ports by taking one of the following actions:
• To configure a single port, select the check box associated with the port, or type the
port number (for example, g1) in the Go T
o Interface field and click the Go button.
• To configure multiple ports with the same settings, select the check box associated
with each interface.
• To configure all ports with the same settings, select the check box in the heading row.
8. From the Admin
Mode menu,
select the administrative PoE mode of the port:
• Enable. The port’s capacity to deliver power is enabled.
This is the default setting.
• Disable. The port’s capacity to deliver power is disabled.
9. From the Port Priority
menu, select the priority for the port in relation to other ports if the
total power that the switch is capable of delivering exceeds the total power budget:
• Low. Low priority
. This is the default setting.
•
Medium. Medium priority.
• High. High priority.
• Critical
. Critical priority.
The port priority determines which ports can still deliver power after the total power
delivered by the switch exceeds the total power budget. (In suc
h a situation, the switch
might not be
able to deliver power to all connected devices.) If the same priority applies to
two ports, the lower-numbered port receives higher priority.
10. From the High Power
Mode menu, select the PoE mode that the port must function in:
• 802.3af. The port is powered in and limited to the IEEE 802.3af mode. A PD that
requires IEEE 802.3at does not receive power if the port functi
ons in IEEE 802.3af
mode.
• Legacy. The port is powered using high-inrush current, which is used by legacy PDs
that require more than 15W to power up.
•
Pre-802.3at. The port is initially powered in the IEEE 802.3af mode and, before
75 msec pass, is switched to the high-power IEEE 802.3at mode. Sel
ect this mode if
the PD does not perform Layer 2 classification or if the switch performs
2-event Layer 1 classification.
• 802.3at. The port is powered in the IEEE 802.3at mode and is backward compatible
with IEEE 802.3af.
The 802.3at mode is the default mode. In this mode, if the switch
detects that the attached PD requests more power than IEEE 802.3af but is not an
IEEE 802.3at Class 4 device, the PD does not receive power from the switch.