Lucent Technologies 6000 - Manual (Page 40)

2-6 MAX 6000/3000 Network Configuration Guide
Configuration Concepts and Profiles
Overview of MAX configuration
Using IPX routing (NetWare 3.11 or later)
The MAX can operate as an IPX router, linking remote NetWare LANs with the local NetWare
LAN on the Ethernet network. IPX routing has its own set of concerns related to the
client-server model and user logins. For example, users should remain logged in for some
period even if the connection has been brought down to save connection costs.
IP routing
IP routing is the most widespread use of the MAX, and it has a wide variety of configurable
options. IP routing is the required protocol for Internet-related services such as IP multicast
support, OSPF, and cross-Internet tunneling for Virtual Private Networks (VPNs). Most sites
create static IP routes to enable the MAX to reliably bring up a connection to certain
destinations or to change global metrics or preferences settings.
Configuring Internet services
All Internet services and routing methods require that the MAX function as an IP router, so an
IP routing configuration is a necessary precondition.
Multicast
The Multicast Backbone (MBONE) is a virtual network layered on top of the Internet to
support IP multicast routing across point-to-point links. It is often used for transmitting audio
and video on the Internet in real time, because multicasting is a much cheaper and faster way to
communicate the same information to multiple hosts.
OSPF routing
Open Shortest Path First (OSPF) is the next generation Internet routing protocol. The MAX
can be configured to communicate with other OSPF routers within an Autonomous System
(AS). To enable this routing function, you must configure the OSPF options on the Ethernet
interface and for each WAN connection that supports remote OSPF routers.
OSPF can import routes from RIP as well. You can control how these imported external routes
are handled by adjusting systemwide routing options such as route preferences and ASE-type
metrics.
Virtual Private Networks
Many sites use the Internet to connect corporate sites or to enable mobile nodes to log in to a
corporate backbone. Such Virtual Private Networks (VPNs) use cross-Internet tunneling to
maintain security or to enable the Internet to transport packets that it would otherwise drop,
such as IPX packets. To implement VPNs, the MAX supports both Ascend Tunnel
Management Protocol (ATMP), which is a Lucent proprietary tunneling mechanism, and
Point-to-Point Tunneling Protocol (PPTP).
ATMP enables the MAX unit to create and tear down a tunnel to another unit. In effect, the
tunnel collapses the Internet cloud and provides direct access to a home network. Packets
received through the tunnel must be routed, so ATMP currently applies only to IP or IPX
networks.