Cisco Cisco IOS Software Release 12.4(15)T
Extended VLAN ID
How to Configure an Extended VLAN ID
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Cisco IOS Release 12.4(15)T
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Extended-range VLANs are not saved in the VLAN database; they are saved in the switch that runs
the 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.
the 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.
How to Configure an Extended VLAN ID
Extended VLANs have VLAN IDs in the range from 1006 to 4094. You can create or delete extended VLANs
using the command-line interface (CLI) in the config-vlan submode. All extended VLANs are created with
the primary type (for example, Ethernet) appropriate for the device. Configurable VLAN parameters include
maximum transmission unit (MTU) size, private VLAN, and remote switched port analyzer (RSPAN). All
other extended VLAN parameters use the default values.
using the command-line interface (CLI) in the config-vlan submode. All extended VLANs are created with
the primary type (for example, Ethernet) appropriate for the device. Configurable VLAN parameters include
maximum transmission unit (MTU) size, private VLAN, and remote switched port analyzer (RSPAN). All
other extended VLAN parameters use the default values.
For detailed information on default values for extended VLAN parameters, see the
section in the “Configuring VLANs” chapter in the Catalyst 6500 Series Cisco IOS Software
Configuration Guide, 12.2SX.
For detailed information on VLANs and configuring VLAN IDs see the
Catalyst 6500 Series Cisco IOS Software Configuration Guide, 12.2SX
.
This section contains instructions for the following tasks:
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Configuring an Extended VLAN
When the switch is in VTP transparent mode (VTP disabled), you can create extended-range VLANs (in
the range 1006 to 4094). The extended-range VLAN IDs are allowed for any commands that allow
VLAN IDs. You always use config-vlan mode (accessed by entering the vlan vlan-id global
configuration command) to configure extended-range VLANs. The extended range is not supported in
VLAN database configuration mode (accessed by entering the vlan database privileged EXEC
command).
the range 1006 to 4094). The extended-range VLAN IDs are allowed for any commands that allow
VLAN IDs. You always use config-vlan mode (accessed by entering the vlan vlan-id global
configuration command) to configure extended-range VLANs. The extended range is not supported in
VLAN database configuration mode (accessed by entering the vlan database privileged EXEC
command).
Extended-range VLAN configurations are not stored in the VLAN database, but because VTP mode is
transparent, they are stored in the switch running configuration file, and you can save the configuration
in the startup configuration file by using the copy running-config startup-config privileged EXEC
command.
transparent, they are stored in the switch running configuration file, and you can save the configuration
in the startup configuration file by using the copy running-config startup-config privileged EXEC
command.
To configure a new extended VLAN, follow the steps below.
Prerequisites
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Extended VLANs can be configured only in the global configuration mode.
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The router must be in VTP transparent mode to configure an extended VLAN.
Restrictions
These are the restrictions for configuring extended VLANs:
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You cannot create a VLAN in the extended range when the reduced MAC address feature is disabled.