Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 472)

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A Virtual LAN (VLAN) is separately administrated virtual network within the same physical managed
network. VLANs are broadcast domains defined to allow control of broadcast, multicast, unicast,
and unknown unicast within a Layer 2 device.
Administrators often need to route traffic to interoperate between different VLANs. Bridging VLANs
are only for non-routable traffic, like tagged VLAN frames destined to some other device which will
untag it. When a data frame is received on a port, the VLAN bridge determines the associated VLAN
based on the port of reception. Using forwarding database information, the Bridge VLAN forwards
the data frame on the appropriate port(s). VLAN's are useful to set separate networks to isolate
some computers from others, without actually having to have separate cabling and Ethernet
switches. Controllers and service platforms can do this on their own, without the need to know
what VLAN it's on (this is called port-based VLAN, since it's assigned by port). Another common use
is to put specialized devices like VoIP Phones on a separate network for easier configuration,
administration, security or service quality.
To define a bridge VLAN configuration:
1. Select Configuration > Profiles > Network.
2. Expand the Network menu to display its submenu options.
3. Select Bridge VLAN.
FIGURE 49 Profile - Network Bridge VLAN screen