D-Link xStack DGS-3400 Series, Руководство пользователя

Страница: 109 / 326

xStack DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch
Disconnect Method The PoE controller uses either Deny next port or Deny low priority port to offset the power
limit being exceeded and keep the Switch’s power at a usable level. Use the drop down menu
to select a
Power Disconnect Method . The default for the Power Disconnect Method is Deny
next port . Both Power Disconnection Methods are described below:
Deny next port - After the power limit has been exceeded, the next port attempting to power
up is denied, regardless of its priority.
Deny low priority port - After the power limit has been exceeded, the next port attempting to
power up causes the port with the lowest priority to shut down to allow the high-priority and
critical priority ports to power up.
Management Mode Use the pull-down menu to set the Management Mode for PoE ports. The user has two
choices:
Power Limit – Choose this option to shut down the port if the power limit on the port exceeds
the limit stated by the user in the Power Limit field.
Auto – Choose this field to automatically disconnect the power from a given port when it
exceeds the maximum power used, as defined by the PD’s (power device) power class, stated
previously in this section. When a PD is attached to a port on the Switch, the Power Class is
automatically determined. If the PD’s power class is unspecified or there is an error in
determining the power class, it is given the power class zero (0).
Therefore, lets say a PD is connected to a PoE port and the power class determined is 1. If
Auto is chosen and the wattage exceeds 3.84 watts, this port will automatically shut down.
Click Apply to implement changes made to the PoE System Settings.
95