Cisco Systems 3750E manual Configuring Normal-Range VLANs, 13-4

Chapter 13 Configuring VLANs

Configuring Normal-Range VLANs

Table 13-1	Port Membership Modes and Characteristics (continued)
Membership Mode		VLAN Membership Characteristics	VTP Characteristics
Dynamic access		A dynamic-access port can belong to one VLAN (VLAN	VTP is required.
		ID 1 to 4094) and is dynamically assigned by a VMPS.	Configure the VMPS and the client with the
		The VMPS can be a Catalyst 5000 or Catalyst 6500
			same VTP domain name.
		series switch, for example, but never a Catalyst 3750-E
			To participate in VTP, at least one trunk port
		or 3560-E switch. The Catalyst 3750-E or 3560-E switch
		is a VMPS client.	on the switch or a switch stack must be
		You can have dynamic-access ports and trunk ports on	connected to a trunk port of a second switch
			or switch stack.
		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.
Voice VLAN		A voice VLAN port is an access port attached to a Cisco	VTP is not required; it has no affect on a
		IP Phone, configured to use one VLAN for voice traffic	voice VLAN.
		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.”

For more detailed definitions of access and trunk modes and their functions, see Table 13-4 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 the 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 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.)

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.

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

13-4 OL-9775-02