ZyXEL Communications ES-3024 manual Port Edit Screen

Dimension ES-3024 Ethernet Switch

Table 6-2 Port Edit Screen

LABEL	DESCRIPTION	EXAMPLE
Active	A port must be enabled for data transmission to occur. Select Active to
	enable the port.
Name	Choose a descriptive name for port identification purposes.	Joe
Default 802.1P	This priority value is added to incoming frames without a (802.1p)	0 (default)
Priority	priority queue tag. See Priority Queue Assignment in Table 5-4
	Switch Setup for more information.
Limiting Number	Use this field to limit the number of (dynamic) MAC addresses that may	0
of Learned MAC	be learned on a port. For example, if you set this field to "5" on port 2,
Address	then only the devices with these five learned MAC addresses may
	access port 2 at any one time. A sixth device would have to wait until
	one of the five learned MAC addresses aged out. MAC-address aging
	out time can be set in the Switch Setup screen. The valid range is
	from “0” to “254”. “0” means this feature is disabled, so the switch will
	learn MAC addresses up to the global limit of 16K.
Type	This read-only label displays the type of port you are currently	10/100M
	configuring.
Speed	Select the speed of the Ethernet connection on this port. Auto (auto-	Auto
	negotiation) makes one Ethernet port able to negotiate with a peer
	automatically to obtain the connection speed and duplex mode that
	both ends support. When auto-negotiation is turned on, an Ethernet
	port on the switch negotiates with the peer automatically to determine
	the connection speed and duplex mode. If the peer Ethernet port does
	not support auto-negotiation or turns off this feature, the switch
	determines the connection speed by detecting the signal on the cable
	and using half duplex mode. When the switch’s auto-negotiation is
	turned off, an Ethernet port uses the pre-configured speed and duplex
	mode when making a connection, thus requiring you to make sure that
	the settings of the peer Ethernet port are the same in order to connect.
Duplex	Select a duplex mode from half duplex (Half), full duplex (Full) or	Full
	(N/A). N/A displays when auto-negotiation is turned on, as the Ethernet
	port on the switch negotiates with the peer automatically to determine
	the connection speed and duplex mode.
Flow Control	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 ES-3024 uses IEEE802.3x flow control in full duplex mode and
	backpressure flow control in half duplex mode.
	IEEE802.3 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.

6-4 Port Setup