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13-5
Catalyst 2940 Switch Software Configuration Guide
78-15507-02
Chapter 13 Configuring VLANs
Configuring Normal-Range VLANs
• Creating or Modifying an Ethernet VLAN, page 13-7
• Deleting a VLAN, page 13-9
• Assigning Static-Access Ports to a VLAN, page 13-10
Token Ring VLANs
Although the switch does not support Token Ring connections, a remote device such as a Catalyst 5000
series switch with Token Ring connections could be managed from one of the supported switches.
Switches running VTP version 2 advertise information about these Token Ring VLANs:
• Token Ring TrBRF VLANs
• Token Ring TrCRF VLANs
For more information on configuring Token Ring VLANs, refer to the Catalyst 5000 Series Software
Configuration Guide.
Normal-Range VLAN Configuration Guidelines
Follow these guidelines when creating and modifying normal-range VLANs in your network:
• Normal-range VLANs are identified with a number between 1 and 1001. VLAN numbers 1002
through 1005 are reserved for Token Ring and FDDI VLANs.
• VLAN configuration for VLANs 1 to 1005 are always saved in the VLAN database. If VTP mode
is transparent, VTP and VLAN configuration is also saved in the switch running configuration file.
• Before you can create a VLAN, the switch must be in VTP server mode or VTP transparent mode.
If the switch is a VTP server, you must define a VTP domain or VTP will not function.
• The switch does not support Token Ring or FDDI media. The switch does not forward FDDI,
FDDI-Net, TrCRF, or TrBRF traffic, but it does propagate the VLAN configuration through VTP.
• The switch supports four spanning-tree instances.
VLAN Configuration Mode Options
You can configure normal-range VLANs (those with VLAN IDs 1 to 1005) by using these two
configuration modes:
• VLAN Configuration in config-vlan Mode, page 13-6
You access config-vlan mode by entering the vlan vlan-id global configuration command.
• VLAN Configuration in VLAN Configuration Mode, page 13-6
You access VLAN database configuration mode by entering the vlan database privileged EXEC
command.