UP-308FEW / UP-316FEW
Port Mirroring
Port mirroring is used to send a copy of packets from one switch port (or an entire VLAN) to a
network monitoring connection on another switch port.
This feature allows to analyze and debug data and diagnose errors on a network, thus helps
network administrators keep a close eye on network performance and alerts them when
problems occur. It can be used to mirror either ingress or egress traffic (or both) on single or
multiple ports.
The Port mirroring function is accomplished by assigning the following items:
•
Destination port (mirror port).
A port that will be used to monitor traffic coming from the
source port(s). Theoretically, it is possible to set multiple destination ports in a network, but
actually the port mirroring function will lower the network throughput, and therefore it is
recommended to set only one destination port.
•
Monitored packets.
The type of traffic to be monitored:
Rx
– Received packets,
Tx
–
Transmitted packets,
Tx & Rx
– both Transmitted and Received packets.
Disable
means the port mirroring function is disabled.
•
Source port.
The port to be monitored. All monitored port traffic will be copied (mirrored)
to the destination port. You can select multiple source ports, but note that port mirroring
function is bandwidth consuming. When multiple source ports are assigned, the
destination port may be congested.
Click
Update
to make the setting effective.
User Manual 21
