Configuring Normal-Range Vlans - Cisco 2950 - Catalyst Switch Configuration Manual

Configuring Normal-Range VLANs

Configuring Normal-Range VLANs
Normal-range VLANs are VLANs with VLAN IDs 1 to 1005. If the switch is in VTP server or
transparent mode, you can add, modify or remove configurations for VLANs 2 to 1001 in the VLAN
database. (VLAN IDs 1 and 1002 to 1005 are automatically created and cannot be removed.)
Note When the switch is in VTP transparent mode and the EI is installed, you can also create extended-range
VLANs (VLANs with IDs from 1006 to 4094), but these VLANs are not saved in the VLAN database.
See the
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 Flash
memory.
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:
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Note This section does not provide configuration details for most of these parameters. For complete
information on the commands and parameters that control VLAN configuration, refer to the command
reference for this release.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
17-4
"Configuring Extended-Range VLANs" section on page
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
Chapter 17 Configuring VLANs
17-12.
Chapter 18, "Configuring
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