Tripp Lite NGI-S08C2POE8, Руководство пользователя

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
Auto Negotiation
Auto (auto-negotiation) allows one port to negotiate with a peer port automatically to obtain the
connection speed and duplex mode that both ends support. When auto-negotiation is turned on,
a port on the Switch negotiates with the peer automatically to determine the connection speed
and duplex mode.
If the peer 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, a 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 port are the same in order to connect.

Flow Control
A concentration of traffic on a port decreases port bandwidth and overflows buffer memory
causing packet discards and frame losses.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 and resend later.
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.
Note: 1000 Base-T does not support force mode .
4.4.1. Port Configuration
4.4.1.1. CLI Configuration
Node Command Description
enable show interface IFNAME This command displays the current port
configurations.
enable configure terminal This command changes the node to
configure node.
configure interface IFNAME This command enters the interface
configure node.
interface show This command displays the current port
configurations.
interface loopback (none|mac) This command tests the loopback mode
of operation for the specific port.
interface flowcontrol (off|on) This command disables / enables the
flow control for the port.
interface speed (auto|10-full|10-full-n|10-half|
10-half-n|100-full|100-full-n|100-half|
100-half-n|1000-full-1000-full-n)
This command configures the speed
and duplex for the port.
interface shutdown This command disables the specific
port.
interface no shutdown This command enables the specific