Cisco Systems 3560 Manual De Usuario

For more detailed definitions of access and trunk modes and their functions, see 

When a port belongs to a VLAN, the switch learns and manages the addresses associated with the port 
on a per-VLAN basis. For more information, see the 

.

Normal-range VLANs are VLANs with VLAN IDs 1 to 1005. If the switch is in VTP server or 
VTP 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.) 

When the switch is in VTP transparent mode, 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. 

Voice VLAN 

A voice VLAN port is an access port attached to a Cisco 
IP Phone, configured to use one VLAN for voice traffic 
and another VLAN for data traffic from a device attached 
to the phone. 

For more information about voice VLAN ports, see 

VTP is not required; it has no effect on a 
voice VLAN.

Private VLAN

A private VLAN port is a host or promiscuous port that 
belongs to a private VLAN primary or secondary VLAN. 

For information about private VLANs, see 

The switch must be in VTP transparent 
mode when you configure private VLANs. 
When private VLANs are configured on 
the switch, do not change VTP mode from 
transparent to client or server mode.

Tunnel

 

(dot1q-tunnel)

Tunnel ports are used for IEEE 802.1Q tunneling to 
maintain customer VLAN integrity across a 
service-provider network. You configure a tunnel port on 
an edge switch in the service-provider network and 
connect it to an IEEE 802.1Q trunk port on a customer 
interface, creating an asymetric link. A tunnel port belongs 
to a single VLAN that is dedicated to tunneling.

For more information about tunnel ports, see 

VTP is not required. You manually assign 
the tunnel port to a VLAN by using the 
switchport access vlan interface 
configuration command.