BCAM - An overview

openNet Server is the central communications manager in BS2000 and guarantees the consistent placement of BS2000 mainframes as future-oriented Internet Servers. The communications manager openNet Server offers communication services for all relevant networks, i.e. not only the Internet but also all services of the traditional transport service DCAM in BS2000.

openNet Server is supplemented by the delivery units interNet Services, interNet Value Edition and interNet Security, which provide the following important standard services:

The selectable units openNet Server and interNet Services.

The concept of the Internet Server is a product standard (X98PS) that was defined by The Open Group in 1998. This Product Standard includes the set of relevant Internet services for interoperability as well as the portability service for JAVA^TM. In addition, the standard also includes references to the required RFCs (Request for Comments) which must be supported for the individual services.

All the relevant services of X98PS are offered by the operating system BS2000 with the openNet Server, interNet Services, interNet Security, APACHE, NFS, JENV, SNMP management and the print service RSO. This package combines the processing power, reliability and security of BS2000 mainframes with all the main Internet standards.

Due to these comprehensive features, BS2000 was the first operating system to be certified with Internet Server Branding by The Open Group.

openNet Server supports IPv6. There is, in addition, a range of functions designed to increase the availability of applications and servers. 

The following overview shows the services listed in X98PS and the products in which they are implemented:

Product	Service group	Service
openNet Server	TCP/IP Communications Services	TCP UDP IPv4 IPv6 -	Transmission Control Protocol User Datagram Protocol Internet Protocol Version 4 Internet Protocol Version 6 Requirements for Internet Hosts
interNet Services APACHE	File Transfer Service	FTP	File Transfer Protocol
	Terminal Service	TELNET
	Name Service	DNS DDNS	Domain Name Service Dynamic DNS
	Time Service	NTP	Network Time Protocol
	Security Service OpenSSL	SSL TLS	Secure Socket Layer Transport Layer Security
	Security Service OpenSSH	SSH	Secure Shell
	Mail Services	SMTP POP IMAP	Simple Mail Transfer Protocol Post Office Protocol Internet Message Access Protocol
	Hypertext Services	HTTP	HyperText Transfer Protocol
SNMP-AGENTS	Network Management	SNMP	Simple Network Management Protocol

More information on the X98PS Product Standard can be found on the Internet under:
http://www.opengroup.org/branding/prodstds/x98ps.htm.

BCAM (Basic Communication Access Method) is the basis of the data communication system for BS2000 mainframes. It supports connections to LANs and, via routers, to WANs in accordance with CCITT, ISO and TCP/IP standards.

BCAM enables the generation, administration, and control of data communication from and to, as well as within, BS2000 mainframes.

This chapter describes the standardizations required for teleprocessing, particularly in multivendor networks. The term multivendor network refers to a network comprising components from various manufacturers.
The section "Network types" lists the public and private networks in which communication can be implemented with BCAM. Details on the systems, devices, networks, lines and applications that can be used are presented in section "Network components".

Details on the names and addresses in computer networks that can be reached with BCAM are discussed in section "Addressing in computer networks".