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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
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Chapter13 Configuring VLANs
Configuring Normal-Range VLANs
For more detailed definitions of access and trunk modes and their functions, se e Table13-4 on
page 13-18.
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 “Managing th e MAC Address Table” section on
page 7-19.
Configuring Normal-Range VLANs
Normal-range VLANs are VLANs with VLAN IDs 1 to 1005. If the sw itch is in VTP server or
VTP transparent mode, you can add, modify or remove configurati ons for VLANs 2 to 1001 in the
VLAN database. (VLAN IDs 1 and 1002 to 1005 are automatically created and cannot be re moved.)
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 “Configuring
Extended-Range VLANs” section on page 13-12.
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.
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 Catalyst3750-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.
For configuration information, see the “Configuring
Dynamic-Access Ports on VMPS Clients” section on
page 13-31.
VTP is required.
Configure the VMPS and the client with the
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.
Voice VLAN A voice VLAN port is an access port attached to a Cis co
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
Chapter 15, “Configuring Voice VLAN.”
VTP is not required; it has no affect on a
voice VLAN.
Table13-1 Port Membership Modes and Characteristics (continued)
Membership Mode VLAN Membership Characteristics VTP Characteristics