Brocade Communications Systems Network Advisor 12.0.0, User Manual

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Brocade Network Advisor SAN User Manual 853
53-1002696-01
Chapter
26
VLAN Management
In this chapter
•
VLAN Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 853
•
Port VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 858
•
Spanning Tree Protocol configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 865
•
VLAN routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 871
VLAN Manager
VLAN Manager allows you to manage Virtual Local Area Networks (VLANs) on Brocade products.
You can use VLAN Manager to view existing VLAN configurations on the products and the network,
and edit the configuration on supported platformsBy default, interfaces on a Brocade 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. 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 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.