NJE/IP Bridge Research Project

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Sine Nomine Associates
Introduction to the
NJE/IP Bridge
David Boyes
Sine Nomine Associates
Session Q22
© 2005 Sine Nomine Associates
Sine Nomine Associates
NJE Overview
Why NJE Today?
Interesting Enhancements to a Linux-based Appliance
Scenarios for Using the NJE/IP Bridge
– Unattended Encrypted File Transfer
– Development Workstation
– Delivering Mainframe Output to a Program for Post-Processing
– Remote execution of Linux applications from z/OS
 Demonstration (network permitting)
 Q&A
© 2005 SNA
Sine Nomine Associates
NJE Overview
 Network Job Entry (NJE) is embedded in most IBM mainframe
operating systems as a method of transmitting and receiving job
streams, output, and interactive messages between nodes.
 Characteristics:
– 8 character userid
– 8 character node name
 Network is fully defined at all points (with some exceptions)
© 2005 SNA
Sine Nomine Associates
NJE Overview
 NJE supported as a application over different transports
– Native BSC communications
– Native CTC communications
– SNA networks
– TCP/IP (VM and VSE only)
 Protocol governed by NJE Protocols and Formats manual
© 2005 SNA
Sine Nomine Associates
NJE Overview
 IBM has implemented NJE capability only for mainframe and iSeries
– No AIX
– No Linux
– No Windows
– No non-IBM workstation OS
 Large amounts of effort and expense necessary to integrate file
transfer and output management capabilities between these
© 2005 SNA
Sine Nomine Associates
Why NJE Today?
 Why do NJE over IP?
– Clean bidirectional integration of programmable workstations with
mainframe data transfer
– Leverage Linux-based development tooling and skills in tandem with
mainframe services (right tool, right job).
– Increasing necessity of data movement between IBM and non-IBM
environments without complex automation requirements
– Death of the 37x5 FEP
– Demonstrate construction of Linux-based companion appliance
 Eliminate SNA requirement for z/OS to participate in NJE networks
© 2005 SNA
Sine Nomine Associates
NJE/IP Bridge
 NJE/IP Bridge implements a
complete set of NJE over IP
server and client applications,
allowing complete NJE over IP
or NJE over CTC peer
functionality, including routing
and output management
 Three configurations:
–LPAR appliance (s390, s390x
–31/64-bit preconfigured guest
for z/VM (s390, s390x only)
–Open systems packages
– Linux (s390, s390x, IA32,
IA64, AMD64, PPC)
– Solaris (SPARC, x86)
– AIX 5.x
– HP/UX 11 and 11i
– Windows
– Mac OS X
© 2005 SNA
Sine Nomine Associates
NJE/IP Bridge Features
 IP connections are protected with SSL if desired
 No SNA stack or SNA services are required on host or
 NQS integration provides RJE function for Unix/Linux
© 2005 SNA
Sine Nomine Associates
Configuration Example
or z/OS
TCP only
NJE/IP Bridge
CTC only
TCP only
z/OS 1.7
Intel or 390
TCP only
© 2005 SNA
Sine Nomine Associates
Linux Enhancements: CTC Driver
 Parallel, ESCON, FICON CTC necessary to communicate with
unmodified IBM operating systems
 New device driver needed: /dev/ctc0
– Implements NJE line discipline over physical or virtual CTC
– Presented to application as connection similar to serial link
© 2005 SNA
Sine Nomine Associates
Scenario: Unattended File Transfer
 Mainframe:
 Open Systems:
 DEST=(node, userid) in JCL
 sendfile /etc/hosts [email protected]
 Benefits:
– Automatic retry
– Multiple file transmission in parallel
– Positive success/fail return code
– ASCII/EBCDIC translation if
– Easily automated with mainframe
© 2005 SNA
Sine Nomine Associates
Scenario: Development Workstation
 JCL submission operates
identically to remote NJE
 Any development tools available
on the workstation can be used
 Preserves module attributes in
transmission automatically (within
scope of NJE protocol)
 Output can be automatically routed
back to workstation w/o complex
transfer procedure
 Possible uses:
– Using COBOL or PL/1 languagesensitive editing in Eclipse with z/OS
COBOL applications
– Online debugging using IDE
against z/OS code
– Low cost configuration
management using CVS or
Subversion for z/OS or VM
© 2005 SNA
Sine Nomine Associates
Scenario: Delivering Output to a Program
 Easy mapping of NJE node/userid to workstation program input via
mapping table in NJE Bridge
 Mapping table specifies application and command line to use, and
file is supplied to application standard input for processing
 Examples (not included, but easily constructed):
– Automatic faxing of output to specified number
– Line printer emulation for PostScript or PCL printers (full CUPS
support, plus mainframe output management)
– Automated PDF conversion and archival on DVD
© 2005 SNA
Sine Nomine Associates
Scenario: Remote Job Execution on Linux
 Available only on Unix/Linux variants
 Uses NQS to queue jobs and manage the remote execution.
 NQS selects system from a pool, transfers the job to the execution
node and returns output and status info via NJE messages
 NJE/IP Bridge integration via program interface
Messages and files produced by Linux application can be tracked
and automated via standard mainframe tools (eg, Netview, PROP,
CA products, TWS, etc)
© 2005 SNA
Sine Nomine Associates
Demonstration (network permitting)
Link Status
Interactive messages
Unattended file transfer
Job transmission from open system to IBM system
Job transmission from IBM system to open system
Remote control and logging via NJE messages
© 2005 SNA
Sine Nomine Associates
Licensing and Packaging
 zSeries appliance packages licensed by physical CEC (no perimage or per-LPAR charges), processor size neutral
 Open systems packages licensed by platform (no per-seat or percopy charges)
– Platform = HW processor architecture + operating system major
 Requires activation code per platform or appliance to function
 Source code available
© 2005 SNA
Sine Nomine Associates
 The NJE/IP Bridge allows all IBM and non-IBM operating systems to
interoperate in a natural, supported, integrated fashion
 The NJE/IP Bridge allows rapid implementation of sophisticated
output and application development solutions at very low cost.
 The NJE/IP Bridge enables IBM and non-IBM systems to leverage
common and sophisticated system management solutions already in
place in either environment
 In environments where the only SNA networking in place is to
support a NJE link between z/OS and a system supported by the
NJE/IP Bridge, the NJE/IP Bridge can allow elimination of VTAM and
SNA networking completely.
© 2005 SNA
Sine Nomine Associates
For More Information
 Talk to any of us at BSI or Sine Nomine
 Stop by the Barnard Software booth here at the zExpo (booth 6)
 Check out the BSI WWW site at www.bsiopti.com
 Call +1 407 323 4773 for pricing and terms.
© 2005 SNA
Sine Nomine Associates
© 2005 SNA

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