Port Mirroring
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Overview
The port mirroring feature allows you to monitor the traffic being
received and transmitted on one or more ports on a switch. This is done
by having traffic copied to another port on the switch. You can connect a
network analyzer to the port where the traffic is being copied and
monitor the traffic on the other ports without impacting network
performance or speed.
Observe the following guidelines when creating a port mirror:
You can monitor from one to up to 23 ports, depending on your
model. However, the more ports you mirror, the less likely the
mirroring port will be able to handle all the traffic. For example, if
you mirror the traffic of six heavily active ports, the mirror port is
likely to drop packets. This means that the mirror port will not
provide an accurate mirror of the traffic of the other six ports.
The ports to be mirrored and the mirroring port must be located
on the same switch.
The ports to be mirrored and the mirroring port must be
operating at the same speed. For example, you cannot use a 10
Mbps port to mirror traffic on a 100 Mbps port.
The AT-S67 and AT-S68 management software also features an
advanced port mirroring. For information and instructions, refer to
Configuring Advanced Mirroring on page 41.
