User manual
26
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1, the use of port speed limit, flow control should be enabled, otherwise the speed between the device will no longer be a
smooth curve;
2, the use of the port speed limit, should not be lost packet unless the flow control is disabled. Packet loss is the
representation of the transmission speed of the fast and slow;
3, the port speed limit on the quality of the network cable is higher, otherwise there will be a lot of conflict and broken
packet.
6.3.4 Mirror
Port mirroring refers to copy data from the port which need to be monitored to appointed monitoring port
for analysis and monitoring. Ethernet switch supports many-for-one mirror which means messages from
several ports can be copied to a monitored port. User can appoint the direction of monitored message,
such as only monitoring of transmitted messages of appointed port. The device configures port mirroring
function through port mirroring group. Each group includes a monitored port and a group of mirror ports.
Total bandwidth of mirroring is not more than that of monitored port. It is good to monitor and manage its
internal network data when using port mirroring in a company. It is also good to locate the failure when
network is cut up.
In the menu bar, click on the "main menu", "port configuration", "mirror", enter the port mirror configuration
interface.
(Figure 6.3.4 )
Source port: The group defines a set of monitored ports, which will collect data from these ports in the
specified direction, and the mirror port can be one or more.
Destination port: The group defines a port for monitoring, and the device outputs data from the port to the
specified direction.
Direction: This parameter specifies the direction of the monitoring port data, a total of "ingress", "egress",