Cisco Systems 3560X Manual De Usuario
15-8
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 15 Configuring VLANs
Configuring Normal-Range VLANs
Beginning in privileged EXEC mode, follow these steps to create or modify an Ethernet VLAN:
To return the VLAN name to the default settings, use the no name, no mtu, or no remote-span
commands.
commands.
This example shows how to create Ethernet VLAN 20, name it test20, and add it to the VLAN database:
Switch# configure terminal
Switch(config)# vlan 20
Switch(config-vlan)# name test20
Switch(config-vlan)# end
Deleting a VLAN
When you delete a VLAN from a switch that is in VTP server mode, the VLAN is removed from the
VLAN database for all switches in the VTP domain. When you delete a VLAN from a switch that is in
VTP transparent mode, the VLAN is deleted only on that specific switch or a switch stack.
VLAN database for all switches in the VTP domain. When you delete a VLAN from a switch that is in
VTP transparent mode, the VLAN is deleted only on that specific switch or a switch stack.
You cannot delete the default VLANs for the different media types: Ethernet VLAN 1 and FDDI or
Token Ring VLANs 1002 to 1005.
Token Ring VLANs 1002 to 1005.
Caution
When you delete a VLAN, any ports assigned to that VLAN become inactive. They remain associated
with the VLAN (and thus inactive) until you assign them to a new VLAN.
with the VLAN (and thus inactive) until you assign them to a new VLAN.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
vlan vlan-id
Enter a VLAN ID, and enter VLAN configuration mode. Enter a new
VLAN ID to create a VLAN, or enter an existing VLAN ID to modify
that VLAN.
VLAN ID to create a VLAN, or enter an existing VLAN ID to modify
that VLAN.
Note
The available VLAN ID range for this command is 1 to 4094.
For information about adding VLAN IDs greater than 1005
(extended-range VLANs), see the
For information about adding VLAN IDs greater than 1005
(extended-range VLANs), see the
Step 3
name
vlan-name
(Optional) Enter a name for the VLAN. If no name is entered for the
VLAN, the default is to append the vlan-id with leading zeros to the
word VLAN. For example, VLAN0004 is a default VLAN name for
VLAN 4.
VLAN, the default is to append the vlan-id with leading zeros to the
word VLAN. For example, VLAN0004 is a default VLAN name for
VLAN 4.
Step 4
mtu
mtu-size
(Optional) Change the MTU size (or other VLAN characteristic).
Step 5
remote-span
(Optional) Configure the VLAN as the RSPAN VLAN for a remote
SPAN session. For more information on remote SPAN, see
SPAN session. For more information on remote SPAN, see
Step 6
end
Return to privileged EXEC mode.
Step 7
show vlan
{name vlan-name | id vlan-id} Verify your entries.
Step 8
copy running-config startup config
(Optional) If the switch is in VTP transparent mode, the VLAN
configuration is saved in the running configuration file as well as in the
VLAN database. This saves the configuration in the switch startup
configuration file.
configuration is saved in the running configuration file as well as in the
VLAN database. This saves the configuration in the switch startup
configuration file.