The OSI-LAN product is a
modular implementation of the four Lower Layers of the
OSI Reference Model and conforms to the relevant ISO
It was implemented as a Windows NT Kernel Driver and works with
all the supported Windows NT LAN adapters. The product is well integrated into the Windows NT networking interfaces and provides the standard Winsock interface to
The product supports all
the media types like Ethernet, Token-Ring and FDDI. The
package is flexible and can be configured to meet
different Profile requirements. The product can also be
configured with Null Network Layer. In this case the
Transport Layer accesses Data Link Layer directly,
bypassing the CLNP / ES-IS protocol modules.
All mandatory functions for UK-GOSIP (Government OSI
Profile) V3.1/V4.0 are supported. All mandatory
functions for US GOSIP Version 2.0 are supported. The
product is certified and registered in US GOSIP version
Interoperability tests are performed with a variety of
vendor's protocol stacks on various platforms as part of
Quality Assurance process. Also the product has been
thoroughly tested to work with network interface cards
for different media like Ethernet, Token-Ring, and FDDI
from a number of vendors at Microsoft's Laboratory. It
has also been tested to interoperate with a variety of
routers capable of OSI routing.
Transport Layer (Layer 4)
ISO 8073 Open Systems Interconnection - Connection Oriented Transport Protocol specification. Addendum 2 : Class four operation over connectionless network service, 1989.
Network Layer (Layer 3)
ISO 8473 Open Systems Interconnection - Protocol for providing Connectionless mode Network Service, 1988. It supports the Full Protocol and Inactive Subset modes.
ISO 9542 End System to Intermediate System Routing Exchange protocol for use in conjunction with the Protocol for providing the connectionless mode network service (ISO 8473), 1988.
Data Link Layer (Layer 2)
ISO 8802-2 Logical Link Control, 1989.
Physical Layers (Layer
Ethernet, Token-Ring and FDDI physical interface
framing supported. (Hardware not included)
For further details of implementation of the above
standards, see the PICS (Protocol Implementation
A GUI application for configuration and administration. Installation and Control are through the Control Panel-Networks applet of Windows NT.
Winsock interface for OSI application developers.
Thus it works with Microsoft's EMX-440 product.
Other OSI based applications like FTAM, and VTP are
Transport Layer (TP4)
Provides End to End Reliable data transfer. PDU size
is configurable. There are many parameters that
advanced user can configure to customize the
Provides TDI as well
as TLI interface.
Provides DLL for winsock based application and
sample source in 'C' is also included in the
deliverables. Supports 32 bytes long T-Selector.
Network Layer (CLNP,
CLNP: Supports multiple
network interface cards. Easy access to Static routing table to override dynamic routing table entry. Routing can be configured based on address and priority. Can handle US GOSIP V2.0 / US GOSIP V1.0 / UK GOSIP V3.1 / UK GOSIP V 4.0 addressing formats. Works with ES-IS module. Can be easily configured to run in full or inactive mode.
ES-IS: Can be configured as End System or Intermediate System. Multicast capability for auto discovery of the end systems in the LAN. Has Interoperated with routers from vendors like Cisco, Wellfleet, 3Com etc.
Two programs are included as part of the standard
delivery, which can be executed as per the Users Guide,
to find a problem. A separate chapter is included in
Users Guide for administration and configuration of the
Toolkit for OSI Application Developer
Winsock addendum for applications development in Users
Guide. Libraries, include and source files for Winsock
application development. Sample Winsock applications in
Hardware - Intel PC with a Network Interface card
(Ethernet, token-ring or FDDI media)
Software - MS-Windows NT V3.5/3.51/4.0