3Com First To Ship Complete Campus Backbone ATM/Ethernet Solution Featuring
Fully-Integrated Standard LAN Emulation

Customers Now Successfully Implementing New LAN Emulation Software and
Virtual LAN Management Software with 3Com's ATM Products

SEPTEMBER 18, 1995 -- SANTA CLARA, CALIF. -- 3Com Corporation (NASDAQ:COMS)
today announced it is shipping standard LAN Emulation software for its
fully scalable, complete ATM/Ethernet solution featuring integrated
Ethernet and ATM switching. Today's announcement makes 3Com the only
vendor to ship ATM products with fully-integrated, ATM Forum-based
standard LAN Emulation in backbone and workgroup switches as well as
network interface cards. With LAN Emulation, 3Com ATM products enable full
intercommunication between legacy Ethernet and ATM LANs. The company also
today unveiled easy ATM virtual LAN management with its Transcend network
management software.

"The combination of 3Com's state-of-the-art technology, flexible
architecture and impressive price/performance ratio made it the easy
choice for integrating ATM into our network," said Eddy Boujaoude, manager
of data communications at Oklahoma State University. "Installation of the
products was extremely easy. All devices were completely configured and up
and running in one day."

By shipping this integrated family of ATM products, 3Com is providing a
complete ATM backbone solution that is designed to preserve customer's
significant legacy LAN investments. 3Com's ATM campus backbone switch, the
CELLplex 7000, dramatically boosts network performance. The LinkSwitch
2700 Ethernet/ATM workgroup switch offers seamless integration of ATM with
Ethernet switching. 3Com ATMLink NICs provide a smooth migration to ATM
for high-performance workstations and high-end servers. The entire ATM
solution can be managed with 3Com's Transcend network management software.
No other ATM vendor offers such a comprehensive package of standardized,
high-performance ATM products for ATM backbone solutions.

"While many vendors have announced support for standard LAN Emulation, 3Com
is the first to actually deliver standard LAN Emulation within a
comprehensive end-to-end solution," said Nachman Shelef, general manager
of 3Com's ATM Division. "Right now, 3Com's ATM solution, with
system-integrated standard LAN Emulation and virtual LAN management, is
satisfying real-life needs. No other ATM vendor can make this statement."

Real-World Backbone Applications Using 3Com ATM with LAN Emulation

Oklahoma State University is one of many sites that currently employ the
3Com ATM strategy and family of products to relieve backbone traffic and
boost overall network performance. OSU uses three CELLplex 7000 switches
and six LinkSwitch 2700 departmental switches to network five PC centers,
encompassing more than 200 Pentium machines, as well as 16 Netware servers
and Sun workstations. 3Com ATM products have enabled OSU to integrate the
power of ATM into its existing network infrastructure. With this
ATM-integrated architecture, OSU is running virtual LANs and is managing
them with Transcend software.

"The 3Com ATM solution is excellent for sites that have Ethernet in place,
but need a boost in network backbone bandwidth." said OSU's Boujaoude.
"The VLAN management with Transcend is also very helpful."

3Com Features LAN Emulation Standard

3Com ATM products are the first to ship fully-integrated standard LAN
Emulation, which is designed to allow existing network applications and
network protocols to run over ATM backbone networks in a standardized
manner. It supports both end-systems directly attached to ATM networks and
edge devices. This feature, integrated in 3Com's complete solution, allows
customers to deploy ATM networks while migrating the embedded base of
networking products -- all without any disruption to end- system network
protocols and applications.

Customize and Optimize with Virtual LANs

3Com's ATM solution with Ethernet switching and LAN Emulation enables
enterprise-wide virtual LANs (VLANs) that closely correspond to network
and business needs, independent of physical locations. When servers are
not co-located with users, or when users are not all co-located, LAN
Emulation optimizes workflow patterns by creating virtual workgroups.
These workgroups have direct links, regardless of physical location, that
enable high-speed communication between each desktop and the server. 3Com
now provides comprehensive VLAN management with its Transcend management
software, which has been enhanced to manage the multiple logical
associations with switched VLANs.

3Com's ATM solution is an integral part of High Performance Scalable
Networking (HPSN), the company's comprehensive strategy for evolving
bandwidth to meet current and future requirements and for extending
networks to remote offices, mobile users and the home office. Delivery of
an end-to-end ATM solution represents Stage 3 of 3Com's HPSN that was
first announced in 1992, charting the company's commitment to integrating
ATM with its leading existing VLAN switching strategies.

3Com Corporation has helped more than 22 million people gain access to
critical information through high speed networks. Designed to serve large
enterprises, small offices and homes, 3Com products provide a scalable
architecture to meet the immediate and long term connectivity needs of
today's user. With research and development on three continents, 3Com is
one of the data networking industry's largest and fastest growing
companies. The company's innovative marketing, sales and support simplify
communication, optimize network reliability and protect customer
investments.
 
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