)
Con?¬?gurations for VIDs 1 to 1005 are written to the vlan.dat ?¬?le (VLAN database). You
can display the VLANs by entering the show vlan privileged EXEC command. The
vlan.dat ?¬?le is stored in ?¬‚ash memory.
To add an Ethernet VLAN, you must specify at least a VLAN number. If no name is entered
for the VLAN, the default is to append the VLAN number to the word vlan. For example,
VLAN0004 would be the default name for VLAN 4 if no name were speci?¬?ed.
After you con?¬?gure the VLAN, you should validate the parameters for that VLAN.
Use the show vlan id vlan_number or the show vlan name vlan-name command to display
information about a particular VLAN, as demonstrated in Example 2-3.
NOTE When the switch is in VTP transparent mode and the enhanced software image
is installed, you can also create extended-range VLANs (VLANs with IDs from 1006 to
4094), but these VLANs are not saved in the VLAN database.
Example 2-3 Displaying VLAN Information
SwitchX# sshhooww vvllaann iidd 22
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
2 switchlab99 active Fa0/2, Fa0/12
Implementing VLANs and Trunks 37
Use the show vlan brief command to display one line for each VLAN that displays the
VLAN name, the status, and the switch ports.
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