Vanguard Routing Model
2-21
T0100-01, Revision B
Release 5.4
LANView of the WAN - Group LCONs
LANView Examples
LANView over X.25
Figure 2-12 is a common application for LANView over X.25. At the HQ site is a
router (Node D) that needs to connect to three other branch nodes (Nodes A to C).
The solid line denotes a permanent SVC. The dotted lines denote On Demand SVCs.
In Figure 2-12, Node D has a LANView of the WAN. The WAN is really a logical
LAN with an IP network level address of 10.0.0.0. Node D has one IP Router
Interface with address 10.0.0.4, which can reach any of the branches (Nodes A to C)
via three SVCs tied to the same Router Interface (for example, Interface #5). This
example shows that a LANView can be a mix of Permanent and On Demand SVCs.
Without LANView functionality, this same network would require Node D to have
three IP Router Interfaces, each with a different IP network level address. With
LANView, the same three connections use only one IP network level address.
Figure 2-12. LANView for IP Over X.25
Vanguard
Terminal Server
Cisco
Vanguard
Token Ring
Vanguard
Token Ring
10.0.0.1
Vanguard
Legacy
Protocol
Server
Image Server
Node A
Node B
Node C
10.0.0.2
10.0.0.3
10.0.0.4
Node D
IP WS
