Extended-Range Vlans; Vlan Port Membership Modes; Uni Vlans - Cisco 3845 - Security Bundle Router Software Manual

Understanding VLANs
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For extended-range VLANs, you can configure only VLAN MTU.
This chapter does not provide configuration details for most of these parameters. For complete
Note
information on the commands and parameters that control VLAN configuration, see the command
reference for this release.

Extended-Range VLANs

You can create extended-range VLANs (in the range 1006 to 4094) to enable service providers to extend
their infrastructure to a greater number of customers. The extended-range VLAN IDs are allowed for any
switchport commands that allow VLAN IDs. Extended-range VLAN configurations are not stored in
the VLAN database, but they are stored in the switch running configuration file, and you can save the
configuration in the startup configuration file by using the copy running-config startup-config
privileged EXEC command.

VLAN Port Membership Modes

You configure a port to belong to a VLAN by assigning a membership mode that specifies the kind of
traffic that the port carries and the number of VLANs to which it can belong.
membership modes and characteristics.
Table 10-1 Port Membership Modes
Membership Mode
Static-access
Trunk (IEEE 802.1Q)
For more detailed definitions of access and trunk modes and their functions, see
page
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
page

UNI VLANs

The Cisco ME 3800X and 3600X have commands for configuring user network interface (UNI) VLANs
to isolate traffic between some ports on a switch.
Cisco ME 3800X and 3600X Switch Software Configuration Guide
10-4
VLAN number to use when translating from one VLAN type to another
UNI VLAN configuration
VLAN Membership Characteristics
A static-access port can belong to one VLAN and is manually assigned to that VLAN.
For more information, see the
A trunk port is a member of all VLANs by default, including extended-range VLANs, but
membership can be limited by configuring the allowed-VLAN list.
For information about configuring trunk ports, see the
Trunk Port" section on page
10-10.
5-19.
"Assigning Static-Access Ports to a VLAN" section on page
10-11.
"Managing the MAC Address Table" section on
Chapter 10
Table 10-1
"Configuring an Ethernet Interface as a
Table 10-4 on
Configuring VLANs
lists the
10-8.
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