Cisco Catalyst 3750 Software Configuration Manual page 207

Chapter 10 Configuring VLANs
Configurations for VLAN IDs 1 to 1005 are written to the file vlan.dat (VLAN database), and you can
display them by entering the show vlan privileged EXEC command. The vlan.dat file is stored in
NVRAM.
You can cause inconsistency in the VLAN database if you attempt to manually delete the vlan.dat file.
Caution
If you want to modify the VLAN configuration, use the commands described in these sections and in the
command reference for this release. To change the VTP configuration, see
VTP."
You use the interface configuration mode to define the port membership mode and to add and remove
ports from VLANs. The results of these commands are written to the running-configuration file, and you
can display the file by entering the show running-config privileged EXEC command.
You can set these parameters when you create a new normal-range VLAN or modify an existing VLAN
in the VLAN database:
• VLAN ID
• VLAN name
• VLAN type (Ethernet, Fiber Distributed Data Interface [FDDI], FDDI network entity title [NET],
TrBRF, or TrCRF, Token Ring, Token Ring-Net)
• VLAN state (active or suspended)
• Maximum transmission unit (MTU) for the VLAN
Security Association Identifier (SAID)
•
Bridge identification number for TrBRF VLANs
•
Ring number for FDDI and TrCRF VLANs
•
Parent VLAN number for TrCRF VLANs
•
Spanning Tree Protocol (STP) type for TrCRF VLANs
•
• VLAN number to use when translating from one VLAN type to another
This section does not provide configuration details for most of these parameters. For complete
Note
information on the commands and parameters that control VLAN configuration, refer to the command
reference for this release.
This section includes information about these topics about normal-range VLANs:
• Token Ring VLANs, page 10-6
• Normal-Range VLAN Configuration Guidelines, page 10-6
• VLAN Configuration Mode Options, page 10-7
Saving VLAN Configuration, page 10-7
•
Default Ethernet VLAN Configuration, page 10-8
•
Creating or Modifying an Ethernet VLAN, page 10-9
•
Deleting a VLAN, page 10-11
•
• Assigning Static-Access Ports to a VLAN, page 10-11
78-15870-01
Catalyst 3750 Metro Switch Software Configuration Guide
Configuring Normal-Range VLANs
Chapter 11, "Configuring
10-5