Siemens V4.0 manual Network communication

Advanced Server for UNIX architecture Network communication

3.2 Network communication

A workstation and an Advanced Server for UNIX communicate in the network using several protocol layers. NetBIOS is implemented in accordance with RFC1001/2. This NetBIOS implementation is based on the standard protocol TCP/IP. The following diagram illustrates the way in which the individual modules work together in the communication process.

Advanced Server for UNIX
	NB-LIB	TCP/IP application
	TLI
	RFC 1001/2
		Sockets
	TCP/IP
WAN driver	Token Ring driver	Ethernet driver
Communications	Communications	Communications controller
controller for WAN	controller for Token Ring	for Ethernet
HDLC, X.25, or	LAN	LAN
ISDN	Token Ring	Ethernet

Communication architecture of Advanced Server for UNIX

i

●This diagram is a simplified illustration of the communication architecture, other products such as CMX, for example, may be required for communications controllers.

●Depending on the UNIX system implemented

–there are different connection options

–communications controllers and card drivers are required

–several communications controllers can be implemented simultaneously.

The NetBIOS component of the operating system kernel is implemented in the streams architecture. The library NB-Lib in Advanced Server for UNIX allows access to the NetBIOS streams driver using the standard interface TLI. Access to TCP/IP takes place via the NetBIOS streams driver. Parallel access to TCP/IP is possible via the socket interface.

Product Manual U7613-J-Z815-6-76