Bay Networks Baystream 7 Configuration And Troubleshooting Manual page 23

provider network
PSTN
Remote
PPP
node
connection
Figure 1-1. Dial VPN Network Providing Connections to Different Destination Types
Figure 1-1
provides connection services both to a corporate LAN and to a third-party Internet
service provider network. While this figure shows only one tunnel, in reality Dial
VPN creates one tunnel for each dial-in connection.
In this illustration, a user at a remote node can dial in to a corporate or home
network or a third-party ISP by calling a phone number associated with that
destination network. The network access server handles the call. The service
provider's network uses a standard IP connection between the remote access
server, shown here as a 5393 module in a 5000 MSX chassis, and the gateway. A
frame relay PVC and a static route must exist between the gateway and the
customer premise equipment (CPE) router to provide a path for packets to return
to the remote node.
115623B Rev. 00
Service
TMS /erpcd
Network
server
access
server (NAS
Tunnel
shows a Dial VPN service provider network with a gateway that
BayStream Multiservice Software Version 7.2
Tunnel
domain
data
Gateway
Frame Relay
PVCs
Planning for Dial VPN
Third-party
internet
service Internet
provider
network
CPE
CPE
LAN Third-party
ISP
RADIUS
server
CPE
Customer
Network
Customer
RADIUS
server
User
data
DVS0012A
1-3