How A Dial Vpn Network Functions - Bay Networks Baystream 7 Configuration And Troubleshooting Manual

Configuring and Troubleshooting Bay Dial VPN Services
Dial VPN also implements concepts from IETF working groups, draft
specifications, and standards such as Mobile IP and Remote Authentication
Dial-In User Service (RADIUS), in addition to IP routing, frame relay, and
Point-to-Point Protocol (PPP).
Dial VPN runs on a variety of Bay Networks hardware platforms. Platforms
running BayStream software such as the Access Stack Node (ASN™), the
Backbone Node family of high performance switch/routers (BLN
BCN
Dial VPN gateway. The Dial VPN NAS function runs on Remote Annex™ and
Remote Access Concentrator (RAC)™ models 4000, 6100, 6300, and 8000, along
with the 5390, 5391, 5393, and 5399 modules for the System 5000 MSX.
You configure Dial VPN using the same tools that you use to configure the
Remote Annex or Remote Access Concentrator and the BayStream platform (that
is, the Remote Annex or Remote Access Concentrator command line interface,
CLI, and the BayStream Site Manager). All the features of Remote Annex and of
BayStream are available on your Dial VPN system.

How a Dial VPN Network Functions

Any authorized remote user (using a PC or dial-up router) who has access to a
phone line and a modem can dial into your network through Dial VPN. A remote
node can be an individual user dialing in (using IP or IPX) or a dial-up router
(using IP) using either a public-switched telephone network (PSTN) or ISDN
connection. A remote user can dial in to a Dial VPN network to connect either to a
corporate or home network or to a third-party Internet service provider (ISP). Dial
VPN regards these as functionally equivalent.
Figure 1-1
reality, a Dial VPN service provider's network might include several remote
access servers to service a variety of dial-in users, and its gateways might serve
different types of networks. This figure may help you visualize the building blocks
when configuring your network. You can configure Dial VPN so that its operation
is transparent to both users and applications. You may find it useful to draw a map
of your own configuration and label the interfaces with their IP and Data Link
Connection Interface (DLCI) addresses, as appropriate.
1-2
®
), and the 5380 module for the System 5000™ MSX™ can function as the
is a simplified illustration of one possible Dial VPN configuration. In
BayStream Multiservice Software Version 7.2
®
, BLN-2, and
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