The document describes an Integrated Ethernet Feeder Node (IEFN) module that provides multi-protocol routing, bridging and WAN connectivity functions. The IEFN module connects to up to four internal Ethernet segments and has two front ports for WAN connectivity. It supports protocols including TCP/IP, IPX, DECnet and AppleTalk for routing and bridging. The module can be managed by MultiMan and Site Manager network management systems.

1. IEFN
FEATURES
s Modularity
Plug-in multi-protocol bridge/router module for
use with MultiNet™
Smart Hubs
s Multiport Interface
Two LAN ports can individually connect to any
two of the four internal Ethernet segments
s Flexible WAN Connectivity
Two front panel synchronous ports for WAN
(Wide Area Network) connectivity
s High Speed
High filtering and forwarding rates ensure
maximum networking efficiency
s Multi-Protocol Routing Support
TCP/IP, IPX, DECnet (phase IV), AppleTalk
(phase 2), XNS, VINES, OSI
s Multi-Protocol Bridging Support
Spanning Tree Transparent Bridge, Transparent
Synchronous Pass-Thru
s Multi-Protocol WAN Support
X.25, Frame Relay, PPP, SMDS
s Connectivity
Supports RS-232, RS-422, X.21, V.35 interfaces
s Fault Tolerance
Supports IEEE 802.1d Spanning Tree Algorithm
for continuous network operation. Two WAN
connections may be used for redundancy or
load sharing
s Intelligence
Self-learning and auto-configuring for simple
installation and operation
s Manageability
Manageable under LANNET's MultiMan™
network management system and Wellfleet's
Site Manager™
s Self-Testing
Extensive self-test routines prevent network
downtime
MODULAR, MULTI-MEDIA NETWORKING INTEGRATED ETHERNET FEEDER NODE

2. Multi-Protocol Support
The IEFN's design allows multi-protocol routing,
bridging, and WAN connectivity.
For Routing: TCP/IP with OSPF and RIP, Novell IPX,
DECnet (phase IV), AppleTalk (phase 2), Xerox
XNS, Banyan VINES, and OSI with ES-IS and IS-IS.
For Bridging: Spanning Tree Transparent Bridge
and Transparent Synchronous Pass-Thru.
For WAN Connectivity: HDLC, PPP, X.25, Frame
Relay, and SMDS.
The module is IEEE 802.3 protocol and interface
compatible.
Intelligence
Built-in intelligence enables the module to
automatically learn the network configuration and
set up efficient routing schemes, greatly simplifying
and streamlining installation and operation
procedures.
Maximal Uptime
Maximal uptime is achieved through fault tolerance,
self-testing routines, and extensive diagnostics. The
module supports the IEEE 802.1d Spanning Tree
Algorithm and supplies backup data links for
continuous network operation. Extensive self-testing
routines are employed to detect potential problems.
Diagnostic LEDs indicate status of ports,
management, loads and faults.
Manageability
The IEFN is manageable by MultiMan, LANNET's
SNMP-based network management system, in
conjunction with Wellfleet's Site Manager. The
powerful management console allows module
configuration and router parameter control from the
system manager's desktop. Setup is also possible
through the serial RS-232 port on the module's front
panel. Software can be downloaded by TFTP from
the console station.
The router module's configurable parameters are
stored in on-board Flash Card allowing
independent plug-and-play operation.
A Path for Growth
Software download capability and advanced
hardware provide a platform for future integration of
advanced bridging and routing features.
10 BIT
ON
LOAD
BS1
BS2
LNK1
LNK2
RESET
BIT
RUN
8OOT
A
L
I
N
K
1
L
I
N
K
2
M
O
D
E
M
C
O
N
S
O
L
E
B/R
Select2 of 4 WAN Port
WANPort
Ethernet Bus 2
Ethernet Bus 3
Ethernet Bus 1
Ethernet Bus 4
Multiple LAN
Segment Connectivity
DESCRIPTION
Introduction
The IEFN (Integrated Ethernet Feeder Node) is a
multi-port, multi-protocol bridge/router module for
use with the MultiNet modular smart hubs. The two
slot module, which provides concurrent routing and
bridging, is a powerful internetworking solution for
multiple LAN/WAN environments. It is totally
integrated, interfacing with the backplane segments
and manageable under the same network
management system.
Flexible Connectivity
The IEFN's interface is comprised of two Ethernet
ports that can individually connect to any two of the
four Ethernet internal segments on the backplane.
This unique port switching capability allows flexible
implementation of bridging and routing functions.
Two front panel synchronous ports provide
LAN/WAN connectivity.
Port selection can be via on board DIP switches or
from the management console.
Performance
The powerful multiprocessor module, incorporating
a state-of-the art Motorola 68030, 32Mhz CPU,
provides a high performance bridging/routing
capability. High network load filtering, high
forwarding rate and low transfer delay provide for
efficient internetworking.

3. LET-36
LE-140XTN
LE-140XTN
IEFN
LET-36
LE-140XTN
LE-140XTN
IEFN
LET-36
LE-140XTN
LE-140XTN
IEFN
Ethernet 3
Ethernet 4
City A
Ethernet 1
Ethernet 2
City B
City C
Public
N
etw
ork
Redundant Link
Ethernet 5
Ethernet 6
Load Sharing
APPLICATION EXAMPLE
SPECIFICATIONS
MODULE HARDWARE
s CPU Microprocessor
Motorola 68030, 32Mhz CPU
s Ethernet Controller
Two LANCE Ethernet co-processors
s Management Sensor Microprocessor
Motorola MC68HC11 microcontroller
s Serial Interface (Console)
RS-232, RJ45 connector, 9600 bps
s Serial Interface (Modem)
for future use
s Memory Allocation
DRAM 4 to 16 Mb
Flash Card 2 Mb
PROTOCOL SUPPORT
s Routing
TCP/IP with OSPF and RIP
Novell IPX
DECnet Phase IV
AppleTalk Phase 2
Xerox XNS
Banyan VINES
OSI with ES-IS and IS-IS
APPN
s Bridging
Transparent Bridge
Transparent Sync-Pass-Thru
s Wide Area Networking
HDLC
Point-to-Point Protocol (PPP)
X.25
Frame Relay
Switched Multimegabit Data Service (SMDS)
Data Link Switching (DLSw)
s Software
Flash Memory Card based, downloadable from
management and console
ETHERNET INTERFACES
s Internal
Connection to two Ethernet buses on backplane of
LET-10 and LET-36 (top and bottom) enclosures
s Control
On board DIP switches for determining two active
ports from the four available options

4. GENERAL
s Environmental
Operating Temperature: 0°-40°C (32°-104°F)
Humidity :5% to 95% non-condensing
EMI: Emission - Meets FCC part 15, subpart J,
class A and EN55022, class B
Immunity - Meets EN50082-1
CE: Meets with requirements
s Mechanical
Panel width: 8 HP (40 mm). Occupies 2
slots in modular enclosure
Size: Height – 266 mm (10.5")
Depth – 230 mm ( 9.06")
Weight: 1 kg (2.2 lb)
s Power Consumption
4.3 Amp at 5 VDC
ORDERING
852101 IEFN Integrated Ethernet
Feeder Node Module
Cables:
890701 V.35/I*FN WAN cable for V.35
890702 RS422/I*FN WAN cable for RS-422
890703 X.21/I*FN WAN cable for X.21
890704 RS232/I*FN WAN cable for RS-232
890714 RS232CONSOLE Console cable
Software:
861202 Site Manager for UNIX
861222 Site Manager for PC/WINDOWS
Documentation:
UM211001 IEFN/ITFN documentation set
WAN INTERFACES
s Interface Support
RS449/422, RS232, V.35, X.21
s Interface Speed
Internal clocking: 1200 bps to 1.25 Mbps
External clocking: 1200 bps to 6.0 Mbps
INDICATORS
s I/O Module
"IOBIT" LED – indicates if the I/O module has
failed or is being reset (ON)
4 "ON" LEDs – indicate selected backplane
buses (BS1 - BS4)
4 "LOAD" LEDs – indicate data activity on the
corresponding bus (BS1-
BS4)
2 "LNK" LEDs – Data Channel Detect is active
on the corresponding link
s Processor Module
"BIT" LED: indicates if the processor has failed
(ON)
"RUN" LED:
ON – running properly
OFF – failure / boot
"BOOT" LED:
ON – operating system is being reset or
loading from FLASH
"A" LED:
ON – AUTO management mode
OFF – MANUAL management mode
CONTROL
"RESET" – push to reset processor
Americas
2310 North First Street,
San Jose, Ca 95131-1011 USA
Tel +1 408 955 0700
Fax+1 408 955 0970
http://www.madge.com
Asia
64-01 Central Plaza, 18 Harbour
Road
Wanchai, Hong Kong
Tel +852 2593 9888
Fax+852 2519 8022
Israel
Atidim Technology Park, Bldg. 3
Tel Aviv 61131 Israel
Tel +972 3 645 8458
Fax +972 3 648 7146
http://www.madge.com
Japan
Believe Mita, 43-16, Shiba 3-chome
Minato-Ku, Tokyo 105 Japan
Tel +81 3 5232 3281
Fax+81 3 5232 3208
http://www.madge.com
Europe, Middle East, Africa
Knaves Beech Business Park, Loudwater
High Wycombe, Bucks HP10 9QZ England
Tel +44 1628 858 000
Fax+44 1628 558 011
http://www.madge.com
Madge Networks
Madge, the Madge logo, LANNET, MultiNet, MultiMan, LANswitch, LANstack,VirtualMaster,VirtuaLAN, DecodeMaster, InterMaster, RMONMaster, SMONMaster, SecureMaster, TerrainMaster and Cellenium aretrademarks,
and insome jurisdictions may be registered trademarks of Madge Networks or its affiliated companies. Other trademarks appearing inthis document are the property of their respective owners.
Data is subject to change without notice
© Copyright 1995 Madge Networks. All Rights Reserved. DS-
Madge Networks N.V. acquired LANNET Data Communications
Ltd. on November 28, 1995.
201001-Rev. B