L2Tp V3 Configuration - Motorola WiNG 5 System Reference Manual

7 - 8 WiNG 5 Access Point System Reference Guide

7.2 L2TP V3 Configuration

L2TP V3 is an IETF standard used for transporting different types of layer 2 frames in an IP network. L2TP V3 defines
control and encapsulation protocols for tunneling layer 2 frames between two IP nodes.
Use L2TP V3 to create tunnels for transporting layer 2 frames. L2TP V3 enables WING supported controllers 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 WING devices and other vendor devices supporting the L2TP V3 protocol.
Multiple pseudowires can be created within an L2TP V3 tunnel. WING supported access points support an Ethernet
VLAN pseudowire type exclusively.
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.
To define an L2TP V3 tunnel configuration:
1. Select Configuration
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.
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.
> Network > L2TP V3