Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 178)

166 Brocade Mobility RFS Controller System Reference Guide
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Overriding a Profile’s Bridge VLAN Configuration
Overriding a Profile’s Network Configuration
A Virtual LAN (VLAN) is separately administrated virtual network within the same physical managed
network. VLANs are broadcast domains defined within switches 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 need for the computer
or other gear to know itself what VLAN it's on (this is called port-based VLAN, since it's assigned by
port of the switch). Another common use is to put specialized devices like VoIP Phones on a
separate network for easier configuration, administration, security, or quality of service.
Two main VLAN bridging modes are available:
• Tunnel Mode: In tunnel mode, the traffic at the Access Point is always forwarded through the
best path. The Access Point decides the best path to use and appropriately forwards packets.
Setting the VLAN to tunnel mode ensures packets are Bridge packets between local Ethernet
ports, any local radios, and tunnels to other APs and wireless controller.
• Local Mode: Local mode is typically configured in remote branch offices where traffic on
remote private LAN segment needs to be bridged locally. Local mode implies that the wired
and the wireless traffic are to be bridged locally.
To define a bridge VLAN configuration or override for a device profile:
1. Select Devices from the Configuration tab.
The Device Configuration screen displays a list of managed devices or peer controllers, service
platforms or Access Points.
2. Select a target device (by double-clicking it) from amongst those displayed within the Device
Configuration screen.
Devices can also be selected directly from the Device Browser in the lower, left-hand, side of
the UI.
3. Select Profile Overrides from the Device menu to expand it into sub menu options.
4. Select Network to expand its sub menu options.
5. Select Bridge VLAN.
NOTE
A blue override icon (to the left of a parameter) defines the parameter as having an override applied.
To remove an override go to the Basic Configuration section of the device and click the Clear
Overrides button. This removes all overrides from the device.