Allied Telesis AT-S39 - Manual (Page 143)

AT-S39 User’s Guide
143
❑ If the VLAN does not contain untagged ports, leave this field
empty.
❑ To remove all untagged ports from a VLAN, enter a 0 (zero) for this
value.
❑ You cannot remove untagged ports directly from the
Default_VLAN. Instead, you remove an untagged port from the
Default_VLAN by assigning the port as an untagged port to
another VLAN.
An untagged port removed from a VLAN is automatically returned to
the Default_VLAN as an untagged port.
5 - Mirroring Port
Use this option to direct all received traffic on the ports of the VLAN
to a mirror port on the switch. This feature is useful when
troubleshooting a VLAN. By placing a packet sniffer on the mirroring
port, you can analyze the VLAN traffic.
Note
In most cases, this parameter should be left with its default value of
0. A value of 0 means that the VLAN traffic will not be mirrored. For
more information on port mirroring, refer to Port Mirroring
Overview on page 93.
7. After making the desired changes, type M to select Modify VLAN.
A confirmation prompt is displayed.
8. Press any key.
The VLAN is modified. Changes to a VLAN are immediately activated
on the switch.
9. Type S to select Save Configuration Changes.
10. Repeat this procedure starting with Step 4 to modify other VLANs.