Brocade Network Advisor SAN + IP User Manual v12.1.0 - Manual (Page 1348)

Brocade Network Advisor SAN + IP User Manual 1299
53-1002949-01
Chapter
36
VLAN Management
In this chapter
• VLAN Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1299
• Port VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1305
• Spanning Tree Protocol configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 1312
• VLAN routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1318
VLAN Manager
VLAN Manager allows you to manage Virtual Local Area Networks (VLANs) on IronWare products.
You can use VLAN Manager to view existing VLAN configurations on the products and the network,
and edit the configuration on supported platforms, including Network OS platforms but not the
IronWare OS 6910. By default, interfaces on a device that are not assigned to a VLAN are members
of the default port VLAN; therefore, all device interfaces assigned to the default VLAN constitute a
single Layer 2 broadcast domain.
When you assign an interface to a port VLAN, that interface is automatically removed from the
default VLAN, VLAN 1. Interfaces assigned to port VLANs can be defined as untagged, tagged, and
converged ports. An untagged port can be a member of only one VLAN, while a tagged port can be
a member of more than one VLAN. Interfaces defined as converged allow tagged and untagged
traffic to pass through an interface at the same time.
Default VLAN
When you enable port-based VLANs, all ports in the system are added to the default VLAN. The
default VLAN ID is 1. The default VLAN is configurable except on Network OS devices. If you want to
use the VLAN ID "VLAN 1" as a configurable VLAN, you can assign a different VLAN ID to the default
VLAN. You must specify a valid VLAN ID that is not already in use. For example, if you have already
defined VLAN 10, do not try to use "10" as the new VLAN ID for the default VLAN. Valid VLAN IDs are
from 1 through 4095. For DCB and Network OS products, the user-configurable range is from 1
through 3583 (3584 through 4095 are reserved).
Super-aggregated VLAN
A super-aggregated VLAN allows multiple VLANs to be placed within another VLAN. This feature
allows you to construct Layer 2 paths and channels. It is useful for Virtual Private Network (VPN)
applications in which you need to provide a private, dedicated, Ethernet connection for an
individual client that can transparently reach its subnet across multiple networks.