FTOS Configuration Guide for the C-Series - Force10 Networks

To create a port-based VLAN, use the following command in the CONFIGURATION mode:
Command Syntax Command Mode Purpose
interface vlan vlan-id CONFIGURATION Configure a port-based VLAN (if the vlan-id is
different from the Default VLAN ID) and enter
INTERFACE VLAN mode.
After you create a VLAN, you must assign interfaces
in Layer 2 mode to the VLAN to activate the VLAN.
Use the show vlan command (Figure 36) in the EXEC privilege mode to view the configured VLANs.
Force10#show vlan
Codes: * - Default VLAN, G - GVRP VLANs
NUM Status Q Ports
* 1 Inactive U So 9/4-11
2 Active U Gi 0/1,18
3 Active U Gi 0/2,19
4 Active T Gi 0/3,20
5 Active U Po 1
6 Active U Gi 0/12
U So 9/0
Force10#
Figure 93 show vlan Command Example
A VLAN is active only if the VLAN contains interfaces and those interfaces are operationally up. In
Figure 93, VLAN 1 is inactive because it contains the interfaces that are not active. The other VLANs
listed in the Figure 93 contain enabled interfaces and are active.
Note: In a VLAN, the shutdown command stops Layer 3 (routed) traffic only. Layer 2 traffic continues to
pass through the VLAN. If the VLAN is not a routed VLAN (that is, configured with an IP address), the
shutdown command has no affect on VLAN traffic.
When you delete a VLAN (using the no interface vlan vlan-id command), any interfaces assigned to that
VLAN are assigned to the Default VLAN as untagged interfaces.
Assigning interfaces to a VLAN
Only interfaces in Layer 2 mode can be assigned to a VLAN using the tagged and untagged commands.
Use the switchport command to place an interface in Layer 2 mode.
These Layer 2 interfaces can further be designated as tagged or untagged. For more information, refer to
the Interfaces chapter and Layer 2 Mode on page 246. When an interface is placed in Layer 2 mode by the
switchport command, the interface is automatically designated untagged and placed in the Default
VLAN.
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