Cisco Systems 3750E Manual De Usuario
13-4
Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
Chapter 13 Configuring VLANs
Configuring Normal-Range VLANs
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
on a per-VLAN basis. For more information, see the
.
Configuring Normal-Range VLANs
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.)
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.)
Note
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
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. On a Catalyst 3750-E switch, thevlan.dat file is stored in flash memory on the stack master.
Stack members have a vlan.dat file that is consistent with the stack master.
display them by entering the show vlan privileged EXEC command. The vlan.dat file is stored in flash
memory. On a Catalyst 3750-E switch, thevlan.dat file is stored in flash memory on the stack master.
Stack members have a vlan.dat file that is consistent with the stack master.
Dynamic access
A dynamic-access port can belong to one VLAN (VLAN
ID 1 to 4094) and is dynamically assigned by a VMPS.
The VMPS can be a Catalyst 5000 or Catalyst 6500
series switch, for example, but never a Catalyst 3750-E
or 3560-E switch. The Catalyst 3750-E or 3560-E switch
is a VMPS client.
ID 1 to 4094) and is dynamically assigned by a VMPS.
The VMPS can be a Catalyst 5000 or Catalyst 6500
series switch, for example, but never a Catalyst 3750-E
or 3560-E switch. The Catalyst 3750-E or 3560-E switch
is a VMPS client.
You can have dynamic-access ports and trunk ports on
the same switch, but you must connect the
dynamic-access port to an end station or hub and not to
another switch.
the same switch, but you must connect the
dynamic-access port to an end station or hub and not to
another switch.
For configuration information, see the
.
VTP is required.
Configure the VMPS and the client with the
same VTP domain name.
same VTP domain name.
To participate in VTP, at least one trunk port
on the switch or a switch stack must be
connected to a trunk port of a second switch
or switch stack.
on the switch or a switch stack must be
connected to a trunk port of a second switch
or switch stack.
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.
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 affect on a
voice VLAN.
voice VLAN.
Table 13-1
Port Membership Modes and Characteristics (continued)
Membership Mode
VLAN Membership Characteristics
VTP Characteristics