CABLETRON DELIVERS SECUREFAST VNET MANAGER

Industry's Most Advanced Management System For Connection-Oriented
Switching

LAS VEGAS -- NETWORLD+INTEROP -- APRIL 3, 1996 -- Cabletron Systems
(NYSE:CS), the leading provider of intranet management solutions, today
unveiled SecureFast VNET Manager -- the industry's most advanced
management system for implementing automated, policy-based virtual
networking capabilities. Engineered for customers requiring advanced
management services such as policy management, call accounting and call
management, VNET Manager allows users to implement policies and procedures
defining user access to essential resources on corporate intranets and the
Internet.

"VNET Manager brings command and control back to the network manager,
without sacrificing performance or security," said Chris Oliver,
Cabletron's director of engineering and manufacturing. "Companies can now
manage their computer networks in similar ways that they manage their
telecommunications networks, controlling user access and generating
account reports for actual network usage."

"VNET Ready" Switches - The Core

When coupled with Cabletron's powerful SecureFast Switch Client software,
users are able to easily implement virtual workgroups that offer features
such as layer 3 routing and broadcast containment. VNET Manager can be
used to implement these services on a Cabletron installed base of over 1
million ports.

Cabletron "VNET Ready" products immediately supporting SecureFast include
the Multi Media Access Center (MMAC), MMAC-Plus and the new SmartSwitch
family. Cabletron switches shipping as early as 1993 support SecureFast,
enabling customers to preserve hardware investments.

VNET MANAGER -- Advanced Management Services

Designed for customers requiring advanced virtual networking capabilities,
the new VNET Manager platform provides extensive control over user access
to key network resources. VNET Manager's automated connection-management
services provide users with powerful network management capabilities such
as network security, resource allocation, call accounting and monitoring.

The key components of VNET Manager include the SecureFast Switch Client
software, the SecureFast Management Suite and a SecureFast Virtual Network
Server (SFVNS). Available as rack-mountable server, the SFVNS enforces all
user-defined rules of the switched network. The company will also develop
an SFVNS module for its MMAC-Plus enterprise switch platform.

By maintaining a comprehensive database of user access rights and
privileges, the SFVNS can simultaneously process requests, determining
which users can talk, how much bandwidth they can use, the time of day
they can access network resources and the best path to establish the
connection.

At the core of VNET Manager is the SecureFast Management Suite -- a group
of applications for managing switched virtual intranetworks and
internetworks. Available management applications include Policy Manager,
Accounting Manager, Connection Manager and Virtual Routing Services.

POLICY MANAGER - Allows network managers to apply policies (rules) to
workgroups on the network. Policies can be established to define resource
usage limits, establish network security and optimize call overhead.

ACCOUNTING MANAGER - Provides call recording for billing and management
purposes. Generates network usage reports, similar to a phone bill, with a
breakdown of who is using the network, what services they are using and
the amount of time they are using the network.

CONNECTION MANAGER - Enables the control of end-to-end connections between
network devices (connection establishment, call maintenance, network
monitoring, path control).

VIRTUAL ROUTING SERVICES -

1. Directory Services - Allows registration and mapping of end point and
switch addresses.

2. Topology Services - Determines connection path and programs switch
connection tables.

Under VNET Manager, the network management system becomes a proactive tool
for the network manager. Operational policy defined by the network manager
is enforced through real-time configuration changes made by the system,
ensuring that network operation is always reliable and predictable. Each
user's network privileges are defined and managed as a policy, regardless
of where the user connects to the network.

Policy management allows very complex network configurations to be easily
managed and most importantly -- enables accounting of network usage on a
"per-call" basis. When combined with a powerful network management system,
such as SPECTRUM, network bandwidth can be allocated per-user, ensuring
that all users receive adequate network resources.

Products are competitively priced. Volume discounts are available. Contact
local sales representatives for specifics. Cabletron Systems is the
recognized leader in providing high-performance intranetworking solutions,
including LAN and ATM switches and advanced network and systems management
software. Under its Synthesis product framework, Cabletron markets
products throughout the world for linking and managing enterprise-wide
networks.

With corporate headquarters in Rochester, NH, Cabletron employs over 5,700
people worldwide. Cabletron's common stock is traded over the New York
Stock Exchange under the symbol CS. Over the last four quarters, the
company has reported record revenue of $1.1 billion.

Cabletron's World Wide Web site can be reached on the Internet at
http://www.cabletron.com/
 
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