Allied Telesis AT-GS950/24 - Manual (Page 122)

Chapter 8: Port Mirroring
122
5. For the source port, select the port(s) whose ingress, egress, or both
ingress and egress traffic you want to monitor.
To select all ports for an ingress or egress, click the All button. (The
All button changes to Clear.)
To de-select all ports for an ingress or egress, click the Clear button.
A check in a box indicates the Ingress or Egress traffic for a port has
been selected.
6. Click Apply on the right-hand side of the page.
The Port Mirroring configuration is implemented immediately on the
AT-GS950/24 switch.
You can connect a data analyzer to the mirroring port to monitor the
Ethernet traffic on the source port(s).
7. From the main menu on the left side of the page, select Save Settings
to Flash to permanently save your changes.