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HiperSockets
• HiperSockets, introduced in z/OS 1.2, provides very
high-speed, low latency TCP/IP data communications
across LPARs resident within the same zSeries server.
HiperSockets acts like a TCP/IP network within the server.
• HiperSockets Accelerator provides an “accelerated
routing path” which concentrates traffi c between OSA-
Express external network connections and HiperSockets
connected LPARs. This function can improve perfor-
mance, simplify confi guration, and increase scalability
while lowering cost by reducing the number of network-
ing adapters and associated I/O cage slots required for
large numbers of virtual servers.
Communications Services highlights:
• A single high-performance TCP/IP stack providing sup-
port for both IPv4 and IPv6 applications
• High Performance Native Sockets (HPNS) for TCP/IP
applications
• Support for the latest security protocols - SSL & TLS
• Multinode Persistent Sessions for SNA applications run-
ning in a Parallel Sysplex environment
• Simple Network Time Protocol Support (SNTP) for client/
server synchronization
• New confi guration support for Enterprise Extender (EE)
XCA major nodes allows activation and inactivation at
the GROUP level. In addition, the EE XCA major node
now supports confi guration updates when the major
node is active. This provides fl exibility and can help
improve availability by allowing updates to occur without
necessarily affecting existing sessions.
• Alternate route selection for SNA and Enterprise
Extender (EE): VTAM allows alternate route selection for
sessions using Enterprise Extender (EE) connection net-
works when connectivity fails due to temporary condi-
tions in the underlying IP network. This can help improve
availability for sessions using EE connection networks.
• Separate address space for TN3270 servers
• TCP/IP Sysplex health monitoring
Network Services benefi ts can include:
•
Function for on demand Internet and intranet applications
• Multivendor, multiplatform connectivity
• Mainframe class of service over IP networks
• Dramatic improvements in TCP/IP performance include
optimization of the TCP/IP stack, and inclusion of a
number of performance related capabilities
z/OS
UNIX
z/OS Version 1 Release 6 base elements
z/OS UNIX
z/OS UNIX is an integral element of z/OS and is a key ele-
ment of the zSeries’ open and distributed computing strat-
egy. Many middleware and application products that run
on z/OS use z/OS UNIX.
z/OS contains the UNIX application services (shell, utilities
and debugger) and the UNIX System Services (kernel and
runtime environment). The shell and utilities provide the
standard command interface familiar to interactive UNIX
users. z/OS includes all of the commands and utilities
specifi ed in the X/Open Company’s Single UNIX Specifi ca-
tion, also known as UNIX 95 or XPG4.2. The z/OS UNIX
Services Debugger provides a set of commands that
allow a C language program to be debugged interactively.
The command set is familiar to many UNIX users. With
Language Environment, z/OS supports industry standards
for C programming, shell and utilities, client/server appli-
cations, and the majority of the standards for thread man-
agement and the X/Open Single UNIX Specifi cation. The
combination of open computing and z/OS allows the trans-
parent exchange of data, easy portability of applications,