Welcome to Comm-Pro Associates, Inc.
Provider of X.25 solutions for IBM Mainframe environments. X.25 Host Network Access Support (HNAS) provides support for Cisco XOT and IBM XTP routers via the host resident TCP/IP stack (NPSI and 37xx communication controller replacement product running in the host) while X.25 37XX Network Access Support (NAS) provides enhanced support under NCP and/or EP in the IBM 37XX communication controller environment (Comm-Pro has over 30 years of experience supporting IBM 37XX Communication Controllers) .
X.25 Host NAS - Network Access
Support (HNAS)
X.25 via Cisco XOT and IBM XTP Routers into Host TCP/IP Stack (NPSI
Emulation)
(NPSI Mainframe Connectivity Without 3745 NCP/NPSI Requirement) -
HNAS Overview Presentation File
X.25 connectivity via Cisco and IBM routers into Z/OS, OS/390 and MVS/ESA applications via the
host resident TCP/IP stack. Installation's that no longer have a requirement for 270x
emulator program applications or native SNA support should consider Comm-Pro's
X.25 Host Network Access Support (HNAS) product as a
replacement for their IBM 3745's (including 3705, 3725 and 3720 communication
controllers) running NCP with NPSI or NCP with our X25 37XX NAS products.
The HNAS
product can be used in conjunction with all Cisco XOT enabled routers (26nn,
36nn, 45nn, 7nnn, etc.) and
the following IBM XTP routers ( 2210, 2212, 2216,
3746-900 and Net Utility). The HNAS product can also be used
for host-to-host communication (HNAS-XOT at each end) for NPSI like
application-to-application without X25 facilities or XOT/XTP routers.
HNAS is a collection of software
that supports specific X.25 components in the mainframe environment
without the requirement for 3745 FEPs running NCP and NPSI . HNAS was
initially developed for IBM routers but now includes support of Cisco XOT
enabled routers.
X.25 virtual circuits are established between Cisco or IBM routers and X.25 networks. The connections are passed to HNAS over a TCP/IP backbone using Cisco routers with the open protocol called XOT (X.25 over TCP/IP) or IBM's proprietary protocol called XTP (X.25 via TCP/IP).
HNAS provides, for non-SNA devices, complete emulation of NPSI functions
such as GATE, GATE Fast Connect, Integrated PAD, Transparent PAD and PCNE.
HNAS now provides support for Qualified Logical Link Control (QLLC/LLC3) over XOT.
Native SNA support for PU Type 1, LU Type 2 over QLLC. This support is new
for HNAS V2R2M0 and eliminates the previous requirement to employ DLSW
at the host location. DLSW line attachment with XOT encapsulation is
required at the remote location unless HNAS XOT QLLC services are employed
in Host-to-Host environments.
IBM
Communication Controller Migration Guide Abstract and Guide
(PDF 3 MB)
Refer to Chapter 6 - X.25 NCP Packet Switching Interface (NPSI)
If the Guide hyperlink fails for the PDF document, go directly to IBM
Redbooks
main page and search on IBM Form Number SG24-6298-00 to locate the
document.
X.25 37XX NAS - Network Access
Support (NAS)
X.25 via IBM 37XX Communication Controller Support
(Over 30 years of experience supporting IBM 37XX Communication Controllers)
X.25 Network Access Support Products: - ITI, DSP, BPAD, PSH, QLLC, XPATH, etc.
This collect of 37XX software packages allows personal computers, asynchronous TTY
terminals, BSC 2780/3780 contention mode terminals, BSC 3270 terminals and native SNA PU
type 1 and 2 terminal equipment to access host systems via packet switched networks that
utilize X25 link access procedures. From the host's viewpoint, there is no distinction
between directly connected terminals and those that communicate via an X.25 network.
NCP Version 7 Release 8 Mod 1 is supported under our NCP V7R8
distribution, see link for details.
Please select one of the above product links for specific product descriptions, domestic and international sales, support and company information.
Last Update - October 15, 2008