Cisco Catalyst 3750-X Software Configuration Manual page 458

Configuring Extended-Range VLANs
In VTP version 1 and 2, 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. VTP version 3 saves extended-range VLANs in the VLAN database.
Before you create an extended-range VLAN, you can verify that the VLAN ID is not used internally by
Note
entering the show vlan internal usage privileged EXEC command. If the VLAN ID is used internally
and you want to free it up, go to
section on page 15-13
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 remote-span
Step 6 end
Step 7
show vlan id vlan-id
Step 8
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 with all default characteristics, enter
VLAN configuration 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
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
15-12
the"Creating an Extended-Range VLAN with an Internal VLAN ID"
before creating the extended-range VLAN.
Purpose
Enter global configuration mode.
Configure the switch for VTP transparent mode, disabling VTP.
This step is not required for VTP version 3.
Note
Enter an extended-range VLAN ID and enter VLAN configuration mode.
The range is 1006 to 4094.
(Optional) Modify the VLAN by changing the MTU size.
Although all VLAN commands appear in the CLI help, only the
Note
mtu mtu-size, private-vlan, and remote-span commands are
supported for extended-range VLANs.
(Optional) Configure the VLAN as the RSPAN VLAN. See the
"Configuring a VLAN as an RSPAN VLAN" section on page
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.
With VTP version 3, the VLAN configuration is also saved in the
Note
VLAN database.
"Assigning Static-Access Ports to a VLAN" section on page
Chapter 15 Configuring VLANs
32-18.
15-9.
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