Advanced Server for UNIX architecture Network communication
Product Manual U7613-J-Z815-6-76
© Siemens Nixdorf Informationssysteme AG 1995 Pfad: D:\O7613e6\u7613e.k03
3.2 Network communication
A workstation and an Advanced Server for UNIX communicate in the network using sever al
protocol layers. NetBIOS is implemented in accordance with RFC1001/2. This Ne tBIOS
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 pr ocess.
Communication architecture of Advanced Server for UNIX
●This diagram is a simplified illustration of the communicat ion architecture, other
products such as CMX, for example, may be required for communicat ions
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 simultaneousl y.
The NetBIOS component of the operating system kernel is implemented in the stream s
architecture. The library NB-Lib in Advanced Server for UNIX allows acces s 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.
Advanced Server for UNIX
NB-LIB
RFC 1001/2
TCP/IP application
TCP/IP
WAN driv er Token Ring driver Ethernet driver
Communications
controller for Token Ring Communications controller
for Ethernet
Communications
controller for WAN
HDLC, X.25, or
ISDN LAN
Token Ring LAN
Ethernet
Sockets
TLI
i