Poe Status - ZyXEL Communications GS2210 Series User Manual

Table 14 Basic Setting > Port Setup (continued)
LABEL
Flow Control
802.1p
Priority
Apply
Cancel

8.8 PoE Status

Note: The following screens are available for the PoE model(s) only. Some features are
only available for the Ethernet ports (1 to 24 for GS2210-24HP and 1 to 48 for
GS2210-48HP).
The PoE model(s) supports the IEEE 802.3at High Power over Ethernet (PoE) standard.
A powered device (PD) is a device such as an access point or a switch, that supports PoE (Power
over Ethernet) so that it can receive power from another device through an Ethernet port.
In the figure below, the IP camera and IP phone get their power directly from the Switch. Aside
from minimizing the need for cables and wires, PoE removes the hassle of trying to find a nearby
electric outlet to power up devices.
Figure 49 Powered Device Examples
You can also set priorities so that the Switch is able to reserve and allocate power to certain PDs.
Note: The POE (Power over Ethernet) devices that supply or receive power and their
connected Ethernet cables must all be completely indoors.
Chapter 8 Basic Setting
DESCRIPTION
A concentration of traffic on a port decreases port bandwidth and overflows buffer memory
causing packet discards and frame losses. Flow Control is used to regulate transmission of
signals to match the bandwidth of the receiving port.
The Switch uses IEEE802.3x flow control in full duplex mode and backpressure flow control in
half duplex mode.
IEEE802.3x flow control is used in full duplex mode to send a pause signal to the sending
port, causing it to temporarily stop sending signals when the receiving port memory buffers
fill.
Back Pressure flow control is typically used in half duplex mode to send a "collision" signal to
the sending port (mimicking a state of packet collision) causing the sending port to
temporarily stop sending signals and resend later. Select Flow Control to enable it.
This priority value is added to incoming frames without a (802.1p) priority queue tag. See
Priority Queue Assignment in
Click Apply to save your changes to the Switch's run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Click Cancel to begin configuring this screen afresh.
GS2210 Series User's Guide
Table 12 on page 65 for more information.
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