Avaya Configuring and Troubleshooting Bay Dial VPN (DVS) Networks Manual de usuario Pagina 22

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Configuring and Troubleshooting Bay Dial VPN Services
1-2 303509-A Rev 00
Dial VPN encapsulates multiprotocol data within an IP datagram. It then sends the
encapsulated packets through bidirectional IP tunnels over the service provider’s
IP routed backbone to the user’s home network.
Dial VPN 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. The Dial VPN
network access server (NAS) function runs on the Remote Access Concentrator
(RAC) Model 8000, and the 5399 RAC module for the System 5000™ MSX™.
Platforms running BayRS, such as the Access Stack Node (ASN™), the
Backbone Node (BN
®
) family of high performance switch/routers (BLN
®
,
BLN-2, and BCN
®
), and the Model 5380 module for the System 5000 MSX, can
function as the Dial VPN gateway (for Layer 3 Dial VPN), or as the L2TP
network server (LNS, for Layer 2 Dial VPN) or CPE (Layer 3) router on the
customer’s home network.
You configure Dial VPN using the same tools that you use to configure the
Remote Access Concentrator and the BayRS platform (that is, the Remote Access
Concentrator command line interface, CLI, and Site Manager). All the features of
Remote Access Concentrators and of BayRS are available on your Dial VPN
system.
What Is Tunneling?
Tunneling is a way of forwarding multiprotocol traffic and addresses from remote
nodes to a corporate network through an Internet Service Provider’s IP backbone
network. Encapsulation is the tunneling mechanism. It takes an incoming packet
of any protocol, wraps that packet’s contents in a tunnel packet, then routes the
encapsulated packet over the Dial VPN IP network.
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