Creating An Extended-Range Vlan - Cisco Catalyst 2950 Software Configuration Manual

Chapter 16 Configuring VLANs

Creating an Extended-Range VLAN

You create an extended-range VLAN in global configuration mode by entering the vlan global
configuration command with a VLAN ID from 1006 to 4094. This command accesses the config-vlan
mode. The extended-range VLAN has the default Ethernet VLAN characteristics (see
the MTU size is the only parameter you can change. See the description of the vlan global configuration
command in the command reference for defaults of all parameters. If you enter an extended-range VLAN
ID when the switch is not in VTP transparent mode, an error message is generated when you exit from
config-vlan mode, and the extended-range VLAN is not created.
Extended-range VLANs are not saved in the VLAN database; they are saved in the switch running
configuration file. You can save the extended-range VLAN configuration in the switch startup
configuration file by using the copy running-config startup-config privileged EXEC command.
Beginning in privileged EXEC mode, follow these steps to create an extended-range VLAN:
Command
Step 1 configure terminal
Step 2
vtp mode transparent
Step 3
vlan vlan-id
Step 4 mtu mtu-size
Step 5 end
Step 6 show vlan id vlan-id
Step 7
copy running-config startup config
To delete an extended-range VLAN, use the no vlan vlan-id global configuration command.
The procedure for assigning static-access ports to an extended-range VLAN is the same as for
normal-range VLANs. See the
This example shows how to create a new extended-range VLAN (when the EI is installed) with all
default characteristics, enter config-vlan mode, and save the new VLAN in the switch startup
configuration file:
Switch(config)# vtp mode transparent
Switch(config)# vlan 2000
Switch(config-vlan)# end
Switch# copy running-config startup config
78-11380-12
Purpose
Enter global configuration mode.
Configure the switch for VTP transparent mode, disabling VTP.
Enter an extended-range VLAN ID and enter config-vlan mode. The
range is 1006 to 4094.
(Optional) Modify the VLAN by changing the MTU size.
Although all commands appear in the CLI help in config-vlan
Note
mode, only the mtu mtu-size command is supported for
extended-range VLANs.
Return to privileged EXEC mode.
Verify that the VLAN has been created.
Save your entries in the switch startup configuration file. To save
extended-range VLAN configurations, you need to save the VTP
transparent mode configuration and the extended-range VLAN
configuration in the switch startup configuration file. Otherwise, if the
switch resets, it will default to VTP server mode, and the extended-range
VLAN IDs will not be saved.
"Assigning Static-Access Ports to a VLAN" section on page
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Configuring Extended-Range VLANs
Table 16-2), and
16-11.
16-13