Allied Telesis AT-S94 - Manual (Page 104)

Configuring Ports
Setting Ports Configurations
Page 104
Configuring Port Mirroring
Port mirroring monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from
one port to a monitoring port. Port mirroring can be used as a diagnostic tool as well as a debugging feature. Port
mirroring also enables device performance monitoring.
Network administrators can configure port mirroring by selecting a specific port from which to copy all packets,
and other ports to which the packets copied. Any number of ports on the device can be mirrors, except the
destination port. An 8-to-1 ratio is supported.
To define port mirroring:
1. Click Layer 1 > Port Mirroring. The Port Mirroring Page opens:
Figure 61: Port Mirroring Page
The Port Mirroring Page contains information about all port mirrors currently defined on the device. The following
information is displayed:
• Unit No. — Indicates the stacking member’s unit number.
• Destination Port — Defines the port number to which port traffic is copied. Note that this port has to be
detached from its VLAN before mirroring is configured . Only one destination port can be defined.
• Source Port — Indicates the port from which the packets are mirrored.
• Type — Indicates the port mode configuration for port mirroring. The possible field values are:
– RX — Defines that the port is monitored for traffic received on this port.
– TX — Defines that the port is monitored for traffic transmitted on this port.
– Both — Defines that the port is monitored for both transmitted and received traffic.