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PoE – Global – Settings
Application scenarios:
The device will dynamically allocate power to each interface according to the power actually consumed by each interface.
During the running process of each PD device, its power consumption will continue to change, and the system will periodically
calculate the total power required by all currently connected PDs. Whether the upper limit of the available PoE power is
exceeded, if it exceeds, the system will automatically power off the PD device on the interface with lower priority to ensure the
normal operation of other devices. However, sometimes there will be a sudden surge in power consumption, the remaining
available power of the system cannot support this surge in demand, and the system has not yet had time to calculate the total
power consumption exceeding the limit, so as to disconnect the power supply of the interface with lower priority. When the
PoE power supply is overloaded, the overload protection will be powered off, and all PD devices will be powered off. Use the
PoE power-reserved command to reasonably set the reserved power of the system. In the event of a sudden surge in power
demand, the reserved power of the system can support the sudden demand and ensure that the system has time to power off
the devices on the interfaces with low priority. method to ensure the stable operation of other equipment.
Interface PoE configuration
Select the switch interface that supports PoE power supply to be configured . Multiple choices are possible.
Click on "Edit" button or icon to change the configuration per port including Power Supply Standard, Power Mode, Power
Limit Mode and Power Supply Priority.
PoE – Interface
QoS
Popularity of the network and the diversification of services have led to a surge in Internet traffic, resulting in network
congestion, increased forwarding delay, and even packet loss in severe cases, resulting in reduced service quality or even
unavailability. Therefore , in order to carry out these real-time services on the network, it is necessary to solve the problem of
network congestion . The best way is to increase the bandwidth of the network, but considering the cost of operation and
maintenance, this is not realistic . The most effective solution is to apply a " Guaranteed " policies govern network traffic. QoS
technology is developed under this background . QoS is quality of service , and its purpose is to provide end-to-end service
quality assurance for various business needs . QoS is a tool for effectively utilizing network resources. It allows different traffic
flows to compete for network resources unequally. Voice, video and important data applications can be prioritized in network
equipment.
Port Priority
This page enables the user to enable the global settings for Port Priority by Enabling/Disabling the feature, the Trust Mode
used by the switch for the received packets, the options are (CoS, DSCP, CoS-DSCP or IP-Precedence).
Once Port Priority is enabled then the user can click on "Edit" button for further configuration per Port/LAG.
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