Service Provisioning
BayStream Dial VPN Services is somewhat
unique in terms of provisioning,since the
s e rv i ce is provisioned mainly by co n f i g u rat i o n
of the TMS.It s u p po rts two prov i s i o n i n g
m e t h ods for the TMS.
First,Bay Networks has provided the
Application Programming Interfaces (API)
for the TMS application so that a service
provider can layer a TMS application directly
on top of its existing subscriber databases.
Bay Networks recommends that the TMS
system be built this way to take advantage
of the powe rful capabilities of these sys te m s.
The second way to provision BayStream
Dial VPN Services is simpler.Bay Networks
provides the TMS application that is com-
patible with the NDBM database included
with most UNIX platforms.The NDBM is flat,
as opposed to relational,and utilizes a fairly
simple command line interface to enter
subscriber records into the TMS.It does not
have the more sophisticated features of an
RDBMS such as database replication and
synchronization.However,it offers a more
cost-effective solution and is ideal for
systems where a single TMS is used, or for
services that support a relatively small
number of subscribers.
Monitoring and Troubleshooting
Bay Networks platforms have the most
comprehensive set of built-in instrumen-
tation in the networking industry today.In
addition,all Bay Networks equipment uses
embedded Simple Network Management
Protocol (SNMP) agents, so any SNMP-based
network monitoring tool can view statistics
or other information from the network.
For each of the platforms that comprise
BayStream Dial VPN Services,a compre-
hensive set of tools is available under the
umbrella of OptivityServices that are
designed to make it simple to monitor
the system and diagnose problems.Tools
such as PathMan
™
,RouterMan
™
,and
Packet Capture and Trace and Performance
(PCAP/TAP)are OptivityServices tools that
can be used for network monitoring.
In addition to monitoring individual
network elements such as routers and
remote access concentrators,protocol-level
signaling built into Bay Networks Mobile
IP implementation allows the tunnel to
maintain state at any given time.The state
of a tunneled connection can be viewed
from the perspective of either the RAS or
the gateway in a BayStream Dial VPN
Services network.A network administrator
can also see,for example,how many tunnels
are currently in use by any given subscriber
by looking at statistics available from the
TMS console.
Accounting and Billing
BayStream Dial VPN Services provides
solutions for both user and subscriber
accounting,while generating billing data
that can easily be used by billing programs.
User accounting is supported today via ACP
and the Sys l og functions of the RA S p l at fo rm .
Through its RADIUS interface,the RAS can
also utilize RADIUS accounting services.
Change Control and Network Maintenance
Bay Networks equipment is configurable via
SNMP SETs,allowing changes to be made
dynamically without bringing down the
node.Partial reboots are also possible as are
individual port restarts.This means that new
services can be configured and deployed
on Bay Networks equipment easily and
without service disruption.
Summary
To summarize, the Bay Networks solution
offers the following benefits:
• No modifications or upgrades required
to subscriber CPE.
• No modifications or upgrades required
to remote client software.
• No addressing changes needed.
Non-globally unique or overlapping
IP addresses are allowed.
• Better security.
• Total control over the network by the
service provider.
• Industry-leading network management.
White Paper Understanding and Implementing Dial VPN Services 13
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