Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 147)

Brocade Mobility RFS Controller System Reference Guide 135
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Use L2TP V3 to create tunnels for transporting layer 2 frames. L2TP V3 enables controllers, service
platforms and Access Points to create tunnels for transporting Ethernet frames to and from bridge
VLANs and physical ports. L2TP V3 tunnels can be defined between Mobility devices and other
vendor devices supporting the L2TP V3 protocol.
Multiple pseudowires can be created within an L2TP V3 tunnel. Mobility supported access points
support an Ethernet VLAN pseudowire type exclusively.
NOTE
A pseudowire is an emulation of a layer 2 point-to-point connection over a packet-switching network
(PSN). A pseudowire was developed out of the necessity to encapsulate and tunnel layer 2 protocols
across a layer 3 network.
Ethernet VLAN pseudowires transport Ethernet frames to and from a specified VLAN. One or more
L2TP V3 tunnels can be defined between tunnel end points. Each tunnel can have one or more
L2TP V3 sessions. Each tunnel session corresponds to one pseudowire. An L2TP V3 control
connection (a L2TP V3 tunnel) needs to be established between the tunneling entities before
creating a session.
For optimal pseudowire operation, both the L2TP V3 session originator and responder need to
know the psuedowire type and identifier. These two parameters are communicated during L2TP V3
session establishment. An L2TP V3 session created within an L2TP V3 connection also specifies
multiplexing parameters for identifying a pseudowire type and ID.
The working status of a pseudowire is reflected by the state of the L2TP V3 session. If a L2TP V3
session is down, the pseudowire associated with it must be shut down. The L2TP V3 control
connection keep-alive mechanism can serve as a monitoring mechanism for the pseudowires
associated with a control connection.
NOTE
If connecting an Ethernet port to another Ethernet port, the pseudowire type must be Ethernet port,
if connecting an Ethernet VLAN to another Ethernet VLAN, the pseudowire type must be Ethernet
VLAN.
To define an L2TPV3 configuration for an Access Point 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. Expand the Network menu and select L2TPv3.
The General tab displays by default with additional L2RPv3 Tunnel and Manual Session
tabs available.