2-14
Vanguard Routing Model
WANView and LANView
WANView and LANView
Introduction
The Vanguard provides two types of interconnection of LANs over a WAN,
LANView and WANView. This section provides a brief description of each and
example functional diagrams.
WANView and
LANView Overview
The following table describes WANView and LANView.
Differences
Figure 2-7 and Figure 2-6 show the difference in the internal data connections
between a LANview (Group LCONs) and traditional WANview (point-to-point
LCONs). With LANView, three different LCONs are mapped to the same Router
Interface. With a WANview, each LCON (that is, each virtual circuit) is tied to a
different Router Interface. For WANView, each Router Interface must be assigned a
different IP Network (or Subnetwork) address.
Name
Type
Description
WANView
Point-to-
Point
LCONs
The most common mechanism of routing between
two Vanguard routers over a WAN link with a virtual
circuit configured as a point-to-point LAN connection
(LCON). The LCON is associated with a unique
router interface on each end. The LCON is considered
to be a network with only two hosts and is assigned its
own, unique subnetwork number.
LANView
Group
LCONs
Grouped LCONs are multiple virtual circuits
associated with the same router interface.
Conceptually, all of the WAN-attached nodes are
considered to be on a virtual LAN. All WAN
interfaces are assigned different host addresses on the
same network number.
