LANNET LANswitch Plus LSE-404S Ethernet Segment Switches (Historical documentation)

1. M O D U L A R
S W I T C H I N G
LANNET LANswitch
Plus LSE-404S
modules together with
LANswitch Plus hubs
let you add network
users and consolidate
services without
compromising
network performance.
he demands placed on today’s
networks are increasing day by day.
Organizations are demanding that
their networks cope with growing numbers
of users as well as new applications based on
client/server technology, multimedia and
collaborative computing. Traditional network
technologies cannot provide the bandwidth
needed to support this growing use of
information technology and are beginning to
place limits on users’ productivity.
As a result, enterprise networks are in
the process of an evolution to high-speed
switching and ATM. However, the process
of integrating existing enterprise networks
into an ATM environment cannot be achieved
overnight. Until then, organizations need a
way to meet the increasing demand for
network services today, and prepare the
foundation for a smooth migration to the
ATM networks of tomorrow, while leveraging
their current network investment to the
fullest.
The LANNET LANswitch™ Plus
LSE-404S series comprises a versatile
family of Ethernet segment switches that
make it easy to give network users the
bandwidth they need to be more efficient
and more productive.
E F F I C I E N T L A N S W I T C H A R C H I T E C T U R E
At the heart of the LANswitch Plus
architecture is the protocol-independent,
2.56 Gbps Cellenium™ Bus which is an
integral part of every LANNET
LANswitch™ Plus hub backplane. The
LSE-404S modules plug directly into the
hub and conduct their switching sessions
across this giga-speed switching fabric. In
addition, each LANswitch Plus port has its
own ASIC switching engine for optimal
performance, scalability and reliability.
This flexible and modular switching
system effectively boosts the performance
of your enterprise network and establishes a
smooth migration path to the ATM networks
of the future.
LANNET LANswitch Plus LSE-404S
Ethernet Segment Switches
DY N A M I C S E G M E N T S W I T C H I N G
F O R E X C E P T I O N A L N E T W O R K P E R F O R M A N C E
LAN Switching is a powerful and cost-effective way for organizations to improve network
performance and consolidate network services. Ethernet switching solves many of today’s
network performance problems, and is the ideal platform for the integration of future ATM
network applications.
T

2. S U P P O R T F O R A L L P R O T O C O L S
LANswitch’s Cellenium switching fabric is
protocol independent so it can provide a
solution for a broad range of network
configurations, from the desktop to the
backbone. When you need reliable, high-
speed support for mixed protocols and
mixed media, as well as easy expansion
capabilities, LANNET LANswitch Plus is
the solution of choice.
L A N S W I T C H L S E - 4 0 4 S / R J
The LSE-404S/RJ segment switch provides
a central switch connection for four
10BASE-T Ethernet LANs. The switch is
equipped with standard RJ45 connectors,
enabling a straightforward migration to high-
speed switching. The LSE-404S/RJ will boost
your Ethernet network to new levels of
performance while leveraging your investment
in existing 10BASE-T infrastructure to the
fullest.
B O O S T I N G N E T W O R K P E R F O R M A N C E
In Figure 1 the LANswitch Plus LSE-
404S/RJ provides speedy interconnections
between 10BASE-T LANs, while the LSE-
404/FL and LSE-404/FB connect switching
hubs to a central collapsed backbone over
reliable, long-distance fiber-optic links.
L A N S W I T C H PLUS L S E - 4 0 4 S / F B
The LSE-404S/FB brings the benefits of
standard 10BASE-FB Synchronous Ethernet
to the switching arena. This powerful segment
switch allows network managers to create
cascading, fault-tolerant backbone connections
which utilize real-time redundancy and
enable extensive diagnositics.
L A N S W I T C H PLUS L S E - 4 0 4 S / F L
LSE 404S/FL makes it easy to extend the
benefits of high-speed LAN switching
across the campus network. LSE 404S/FL
uses reliable 10BASE-FL (FOIRL) fiber-
optic media to create full-duplex backbone
connections between LANswitch Plus
switching hubs. These multi-mode, fiber-
optic connections establish dedicated,
collision-free inter-hub links that can span
distances of more than two kilometers. The
module also performs traffic filtering,
making it an ideal solution for network
environments that use a collapsed backbone
topology.
LANNET
LANswitch Plus
LSE-404S
Ethernet
Segment
Switches
LSE-404S/RJ
Switching between
Ethernet Segments
LSE-404S/FL
Collapsed Fiber
Backbone Links
LSE-404S/FB
Synchronous
Ethernet Backbone
E1
E2
E3
Generic Hub
Link to LSE-404S/FL
LET-36 Hub
LET-36 Hub
LET-20 Hub
100 Mbps
RedundantLink
A typical configuration using
LANswitch Plus Ethernet
segment switches.

3. C O N G E S T I O N M A N A G E M E N T
LANswitch Plus guarantees the delivery of
each and every packet by effectively
controlling the flow of traffic. Even on the
busiest switch ports, no-packet-loss is
ensured by the unique congestion
management mechanisms built into every
LANswitch Plus module.
Effective congestion management
improves the overall performance of your
network by ensuring that the network is
utilized for transmitting first-time packets
only, and does not waste time and resources
on multiple re-transmissions.
P R I O R I T Y A N D FA I R N E S S
LANNET LANswitch Plus has built-in
priority and fairness mechanisms that
guarantee the quality of service required for
the multitude of emerging business
applications.
LANswitch Plus prioritization allows the
network manager to assign priorities to specific
sources of packets (e.g., real-time applications)
to ensure that they are delivered at a higher
rate than low priority data. Prioritization
provides the isochronous service required
for multimedia and other delay-sensitive
applications.
Using fairness, LANswitch Plus
maintains balanced, non-proliferating
queues of traffic in all switch ports which
eliminates pressure points in the switch.
What’s more, LANswitch Plus delivers
these features using standard NICs, drivers
and cabling, and serves as an end-to-end
extension for ATM quality of service
standards.
V I R T U A L L A N N E T W O R K I N G
Like all LANswitch Plus modules,
LSE-404S segment switches can be easily
configured in a Virtual LAN (logically
defined work-group). This allows users
within logical groups to work together
irrespective of their physical network
connection.
FA U LT – T O L E R A N C E
LANswitch Plus modules are designed to
be completely fault tolerant. Their
distributed ASIC architecture ensures that
failure of one switching module does not
affect other modules in the hub.
F U L LY M A N A G E A B L E
To keep a switched network running
smoothly, network managers must be able
to effectively monitor and troubleshoot the
switch. It is essential to know who is using
the switch, what they use it for and how much
traffic they generate. Quickly locating the
source of an error and correcting it is critical
to maintaining good network performance.
LANswitch Plus LSE-404S segment
switches are fully monitored and managed
by SMONMaster,™ LANNET’s RMON
switch monitoring application which works
in conjunction with Montage,™ LANNET’s
comprehensive SNMP-based network
management system.
SMONMaster passively monitors all
traffic traversing the Cellenium Bus, giving
network managers a top-down perspective
of activity in the switch. Top-down switch
management employs a two-tier methodology,
beginning with a global view of switch
traffic and progressing to specific views
of individual switch ports and their hosts.
Using the global view, network managers
can quickly pinpoint problematic areas in
the switch, and then zoom in on specific
hosts or individual sessions in order to
analyze them in more detail.
What’s more, passive monitoring of the
LANswitch Plus bus gives an accurate
picture of switch traffic without affecting the
switching process or performance.
Montage and SMONMaster are fully
integrated with such popular management
platforms as HP OpenView/UNIX,
HP OpenView/Windows, and IBM NetView.
LANNET
LANswitch Plus
LSE-404S
Ethernet
Segment
Switches

4. I N V E S T M E N T P R O T E C T I O N
LANNET gives network users the
flexibility to adopt high-speed switching at
their own pace. Performance-boosting
LANswitch Plus modules like the
LSE-404S series, plug directly into the
LANswitch Plus hub chassis, allowing
customers to deploy high-speed switching
technology where it is needed most by
simply swapping modules in and out of the
hub.
This built-in flexibility also paves a
smooth migration path to ATM. In fact,
LANNET LANswitch Plus is the only hub
in the industry providing easy coexistence
and migration from shared LANs to
switched LANs to ATM, with no hub or
backplane upgrade.
C U S T O M E R S U P P O R T W I T H O U T L I M I T S
The LSE-404S modules are backed by
LANNET’s expertise in networking and a
worldwide network of Value Added
Resellers.
Customers can also download up-to-date
information from the LANNET World Wide
Web home page (http://www.lannet.com).
The LFE-404S modules come with a
one-year hardware warranty.
LANNET
LANswitch Plus
LSE-404S
Ethernet
Segment
Switches
Israel
LANNET Ltd.
Atidim Technology Park
Building 3
Tel-Aviv 61131
Israel
Tel +972 3 645 8458
Fax +972 3 648 7146
http://www.lannet.com
USA
LANNET Inc.
150 Knowles Ave.
Los Gatos, CA 95032
USA
Tel 1-888-ETHERNET
(408) 871-4000
Fax (408) 871-4100
http://www.lannet.com
Other Offices
Benelux
Brazil
China
France
Germany
Honk Kong
Iberia
Italy
Japan
Korea
Mexico
Republic of S. Africa
Singapore
Sweden
Switzerland
United Kingdom
P R O D U C T S P E C I F I C AT I O N S
I N T E R FA C E S
I/O Ports:
LSE-404S/FL and Four ST connectors accepting
LSE-404S/FB optical fibers with core diameters
of 50µ, 62.5µ and 100µ
LSE-404S/RJ: Four shielded RJ45 connectors
S I G N A L L I N G A N D P R O T O C O L S
IEEE 802.3 standard for 10BASE-T, 10BASE-FB and
10BASE-FL (FOIRL)
P H Y S I C A L C H A R A C T E R I S T I C S
Dimensions (h,w,d): 253mm x 20mm x 232mm
Hub Slots: Occupies one slot in hub
P O W E R R E Q U I R E M E N T S
Consumption: 3.5 Amps @ 5V
E N V I R O N M E N TA L
Operating
Temperature: 0-40 degrees Celsius
Humidity: 5% to 95% non-condensing
A G E N C Y A P P R O VA L
EMI
Emission: FCC Part 15, subpart J, class A;
EN55022 class B; CE
Immunity: Meets EN50082-1
F R O N T PA N E L I N D I C AT O R S
Front Panel LEDs: Port Activity
Buffers
Collisions
Management mode
Standalone mode
Backbone
Redundancy
Port enable/disable status
O R D E R I N G I N F O R M AT I O N
PA R T N O . D E S C R I P T I O N
860008 LANswitch Plus LSE-404S/FL
Ethernet Segment Switch
(10BASE-FL)
860009 LANswitch Plus LSE-404S/RJ
Ethernet Segment Switch
(10BASE-T)
860013 LANswitch Plus LSE-404S/FB
Ethernet Segment Switch
(10BASE-FB)
Specifications subject to change without notice.
LANNET, the LANNET logo, Cellenium, LANswitch, Montage, MultiNet, SMON, TerrainMaster, and Visage are trademarks, and in some jurisdictions may be registered
trademarks, of LANNET Ltd., Madge Networks or its affiliated companies. Other trademarks appearing in this document are the property of their respective owners.
© Copyright 1998 LANNET. All Rights Reserved. 143016 Rev. 0 1/98