Chapter 21
| VLAN Commands
Configuring VLAN Interfaces
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vlan-id - Default VLAN ID for a port. (Range: 1-4094)
Default Setting
VLAN 1
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
â—† When using Access mode, and an interface is assigned to a new VLAN, its PVID
is automatically set to the identifier for that VLAN. When using Hybrid mode,
the PVID for an interface can be set to any VLAN for which it is an untagged
member.
â—† If acceptable frame types is set to all or switchport mode is set to hybrid, the
PVID will be inserted into all untagged frames entering the ingress port.
Example
The following example shows how to set the PVID for port 1 to VLAN 3:
Console(config)#interface ethernet 1/1
Console(config-if)#switchport native vlan 3
Console(config-if)#
vlan-trunking This command allows unknown VLAN groups to pass through the specified
interface. Use the no form to disable this feature.
Syntax
[no] vlan-trunking
Default Setting
Disabled
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
â—† Use this command to configure a tunnel across one or more intermediate
switches which pass traffic for VLAN groups to which they do not belong.
The following figure shows VLANs 1 and 2 configured on switches A and B, with
VLAN trunking being used to pass traffic for these VLAN groups across switches
C, D and E.
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