Allied Telesis AT-S39 - Manual (Page 137)

AT-S39 User’s Guide
137
has VLANs using VIDs 2 through 24, the AT-S39 software will still use
VID 2 as the default value for the first VLAN you create on the new
switch, even though that VID number is already being used by
another VLAN on the network. To prevent inadvertently using the
same VID for two different VLANs, you should keep a list of all your
network VLANs and their VID values.
Note
A VLAN must have a VID.
6. If the VLAN will contain tagged ports, type 3 to select Tagged Ports
and specify the ports. If this VLAN will not contain any tagged ports,
leave this field empty. You can specify the ports individually (e.g.,
2,3,5), as a range (e.g., 7-9), or both (e.g., 2,5,7-9).
7. Type 4 to select Untagged Ports and specify the ports on the switch
to function as untagged ports in the VLAN. If this VLAN will not
contain any untagged ports, leave this field empty. You can specify
the ports individually (e.g., 2,3,5), as a range (e.g., 7-9), or both (e.g.,
2,5,7-9).
8. If you want all received traffic on the ports of the VLAN to be mirrored
to another port on the switch, type 5 to select Mirroring Port and
enter a port number when prompted.
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.
9. Type C to select Create VLAN.
If the switch is successful in creating the new VLAN, you will see the
following message:
SUCCESS - Press any key to continue.
The new VLAN is now active on the switch.
10. Press any key.
The Configure VLANS menu in Figure 38 is displayed.
11. Type S to select Save Configuration Changes.