Коммутаторы NETGEAR S3300-28X (GS728TX) 24x1GE - инструкция пользователя по применению, эксплуатации и установке на русском языке. Мы надеемся, она поможет вам решить возникшие у вас вопросы при эксплуатации техники.
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Configure System Information
92
S3300 Smart Managed Pro Switch
supply power. When ports have the same priority, the lower numbered port will have a higher
priority. Possible priority values are:
•
Low
. Low priority.
•
Medium
. Medium priority.
•
High
. High priority.
•
Critical
. Critical priority.
The factory default is Low.
5.
Select the
Power Mode
.
•
802.3 af
. The PoE port power is limited to IEEE 802.3af mode only. A powered device
(PD) that requires IEEE 802.3at power does not receive power if the port functions in
the IEEE 802.3af mode.
•
Legacy
. A port is powered using high-inrush current, used by legacy powered devices
(PDs) whose power requirement is greater than 15W at initial power up.
•
Pre-802.3at
. This means that a port is powered in the IEEE 802.3af mode initially,
then is switched to the high-power IEEE 802.3at mode before 75 msec. This mode
needs to be used if PD is not performing Layer 2 Classification or if the PSE (the
switch) is performing two-event Layer 1 Classification.
•
802.3at
. The PoE port power is powered in the IEEE 802.3at mode, and is backward
compatible with IEEE 802.3af. The factory default is 802.3at mode. In the 802.3at
mode, if the switch detects that the attached PD requests more power than the IEEE
802.3af, but is not an IEEE 802.3at Class 4 device, then the PD does not receive
power from the switch.
6.
Set the
Power Limit Type
to control the maximum power that a port can deliver. Use of
these options may lead to a situation where the port reserves a higher amount of PoE power
than the port can actually deliver to a connected PD. This happens when the PD reports
class information incorrectly. Note that incorrect setting of this field may prevent a PDF from
receiving PoE power from a given port(s).
Possible values are:
•
None
. This value allows the port to draw up to class 0 max power in case of low
power mode, and up to class 4 max power in case of high power mode.
•
Class
. This value means that the port power limit is equal to the class of the PD
attached.
•
User
. This value means that the port power limit is equal to the value specified by
Power Limit.
The factory default is User.
7.
In the
Power Limit (mw)
field, specify the maximum power that can be delivered by a port.
The range is 3000–30000 watts with step of 1 milliwatt (mw). The factory default is 30000
mW.
8.
In the
Detection Type
field, select the PD detection mechanism performed by the PSE port.
Possible values are:
•
IEEE 802
. 4-Point Resistive Detection is done.
Характеристики
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