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IBM United States
Software Announcement 201-169
June 12, 2001

IBM ACF/NCP V7R8.1 and ACF/SSP V4R8.1 Include Network Management and Serviceability Enhancements

 ENUS201-169.PDF (44KB)


At a Glance

IBM ACF/NCP V7R8.1 and ACF/SSP V4R8.1 include new network management and service enhancements.

  • Simplifies installation of NTuneNCP and makes it easy to propagate into networks with the NTuneNCP tuning feature (now included with ACF/NCP)
  • Improves availability with the enhanced 3746-900 and NCP flow control for Token-Ring networks
  • Reduces service times with enhancements to NCP/SSP dump and Interactive Problem Control Systems

For ordering, contact:

Your IBM representative, an IBM Business Partner, or IBM Americas Call Centers at 800-IBM-CALL (Reference: YE001).

Overview

ACF/NCP V7R8.1 and ACF/SSP V4R8.1 now include the NTuneNCP tuning feature as an integral part of these programs. This feature simplifies installation and makes it easier to propagate this valuable network monitoring tool into SNA networks. NTuneNCP is also included with NTuneMON V3R2 for installation on earlier versions and releases of ACF/NCP.

In addition, ACF/NCP V7R8.1 and ACP/SSP V4R8.1 include the following new network management and serviceability enhancements:

Network Management Enhancements

  • NCP now allows 3746-900 sub-area traffic to continue to flow in a Token-Ring (ECLTYPE = ANY) environment until NCP reaches critical congestion, reducing the possibility that a disruptive multiple session outage could occur. An NCP congested for five minutes no longer issues Input/Output Halts (IOH) to deactivate a physical line. This allows 3746-900 sessions to be maintained and normal data flow to resume after NCP congestion has cleared.
  • In a 3746-900 Token-Ring environment,the NCP Outboard Data Link Control (ODLC) window has been enlarged to accept more data frames, reducing the number of Receive Not Ready (RNR)s and re-transmissions, and improving the chances that throughput will be maintained.
  • The alert that is generated by NCP when a Transmission Group (TG) is congested or hung and throughput degraded now contains a specific reference to the NCP/SSP/EP Diagnostic Guide where detailed information to aid recovery can be found.

Serviceability Enhancements

  • To help reduce service times, the SSP dump formatter will now format an NCP dump even though the first record of the dump is corrupted. This allows for the possibility that there may be usable information that will permit problem analysis to continue while another dump is being obtained.
  • The Interactive Problem Control System used to analyze NCP dumps has been extensively enhanced to provide more detailed failure data or user options. This enhancement will speed up NCP dump analysis and shorten service times.

Key Prerequisites

Refer to the Software Requirements section for details.

Planned Availability Date

  • ACF/NCP V7R8.1 — July 27, 2001
  • ACF/SSP V4R8.1 — July 27, 2001

Description

Network Management Enhancements

NTuneNCP Shipped with SSP and NCP: NTuneNCP is now shipped with NCP V7R8.1 and SSPV4R8.1 to simplify installation of NTuneNCP and make it easier to propagate this valuable tuning feature into SNA networks. Adding NTuneNCP allows changes to network parameters without having to regen NCP, thus giving greater flexibility and control over a network. NTuneNCP will continue to be shipped with NTuneMON V3R2 to support installation on earlier versions and releases of ACF/NCP.

Enhanced 3746-900 TIC3 and NCP Flow Control for a Token-Ring Network: In a token-ring environment, where both subarea and peripheral data are supported, (ECLTYPE = PHYS, ANY) and NCP is becoming congested, NCP has been modified to allow poll responses to subarea station and to continue to accept sub-area traffic until NCP reaches critical congestion (CWALL). Before, sub-area station's connections would be broken as the station's retry limit was reached because NCP did not respond, creating a disruptive multiple session outage, particularly if the Transmission Group (TG) had a single link and multiple virtual routes.

Maintain 3746-900 Sessions during NCP Congestion: One of the flow control mechanisms used by NCP is to deactivate a physical line (IOH Halt Cause Code = 8412) attached to a 3746-900 when service clear has been withheld for more than five minutes to prevent a deadlock condition from occurring. However there is no guarantee that issuing an IOH to a particular link would either prevent or resolve a deadlock condition and the IOH could result in many sessions being unnecessarily terminated. By eliminating issuing IOHs to deactivate a physical line, 3746-900 sessions will be maintained and normal data flow could resume once NCP congestion has cleared.

Enhance 3746-900 and NCP Flow Control for Token Ring Sub-Area Connections: During congestion and when the ODLC pacing window is closed, data can be discarded and RNRs (receive not ready) are sent to adjacent link stations. After congestion has cleared and the ODLC window is open, the combination of RNRs being sent and the discarded frames being retransmitted can cause throughput to be degraded. In NCP V7R8.1, the ODLC pacing window has been made larger to accept more data frames and thus reduce the need for RNRs and re transmission's, improving the chances that throughput will not be reduced.

Transmission Group Alert Enhancement: When a Transmission Group is congested or hung and throughput has degraded, NCP generates an alert notifying the owning host Subsystem Control Point (SSCP) of the condition. In the alert there is message referring the host operator to NCP documentation for additional information. This reference in the alert has been made more specific and now refers to NCP/SSP/EP Diagnostic Guide where detailed information can be found about this alert condition.

Serviceability Enhancements

NCP Dump Enhancements: On rare occasion when an NCP dump is taken, the first record, which contains information needed by the SSP dump formatter, is corrupted and the dump can't be formatted. The usual remedy is to perform another dump, but this is time consuming and slows progress towards problem resolution. The dump formatter has been modified to continue to process the dump file and to print it in hex format. This will allow IBM service personnel the opportunity to continue problem investigation until a second uncorrupted dump can be taken.

Interactive Problem Control System (IPCS) Enhancements: IPCS has been used for years to analyze NCP dumps. In this release, there are a number of enhancements to IPCS that provide more detailed failure data or user options to speed up the dump analysis process. Improvements include:

  • Allowing selection of full or partial analysis of NCP slowdown FFDC information
  • Choosing between displaying control blocks for all interface addresses or for only a specific interface address
  • Displaying current CCU and buffer utilization as well as histogram data and expanding dumps to include NPSI resources.

Euro Currency

These programs are not impacted by euro currency.

Hardware and Software Support Services

SmoothStart™/Installation Services

IBM Installation Services will not be provided for NCP.

Your country may offer NCP installation and customization through fee-based Country Specific Offerings . Contact your IBM representative for further information on what is available in your country.

If you are migrating to APPN®, IBM is able to provide you with APPN Migration Services. These services are designed around your specific migration needs, providing the flexibility to match your requirements and environment. Our project management team helps ensure that all the pieces mesh when the migration is finished. All information can be found at:

Trademarks

 
MVS/ESA, VSE/ESA, and SmoothStart are trademarks of International Business Machines Corporation in the United States or other countries or both.
 
OS/390, VM/ESA, and APPN are registered trademarks of International Business Machines Corporation in the United States or other countries or both.
 
Other company, product, and service names may be trademarks or service marks of others.

Technical Information

Specified Operating Environment

Hardware Requirements

ACF/NCP V7R8.1, for z/OS, OS/390® (MVS™), VM, and VSE is designed to operate on any IBM 3745 Communications Controller channel-attached to a host processor or remotely connected by an SDLC link, IBM Token Ring, X.25, Frame-Relay, or ISDN through another controller to a host processor.

When installed, the 3746 Model 900 provides ESCON®-attachment capability for the 3745, as well as additional, higher performance token-ring adapters and communications-line adapters.

  • Token-ring connection balancing for 3746 Model 900 requires 3746 feature numbers 5810 or 5811, and type 3 token-ring processors (TRP3).
  • Frame Relay Boundary Access Node (BAN) connection balancing for 3746 Model 900 requires feature numbers 5810 or 5811, and type 3 communications-line processors (CLP3).
  • Support for 32 ESCON stations requires feature numbers 5810 or 5811, and type 3 ESCON processors (ESCP3).
  • Dynamic Windowing for 3746 Model 900 requires 3746 feature number 5812, and type 3 token-ring processor (TRP3).
  • Extended X.25 Support requires 3746 feature number 5812, and type 3 communication line processor (CLP3).

Refer to the program directory for additional details relative to the hardware requirements for ACF/NCP V7R8.1 for z/OS, OS/390 (MVS), VM, and VSE.

Software Requirements

NCP V7R8.1 Base Software Requirements: ACF/NCP V7R8.1 is generated using the following ACF/SSP programs:

                                                        Order
Title                                                   Number
 
ACF/SSP V4R8.1 for z/OS, OS/390                         5655-041
 (MVS/ESA(TM))
 
ACF/SSP V4R8.1 for VM/ESA(R)                            5654-009
 
ACF/SSP V4R8.1 for VSE/ESA(TM)                          5686-064

Beginning with ACF/SSP V4R7, the Network Definition Facility (NDF) offers exclusive support for High Level Assembler (HLAS) (5696-234). Support of the HLAS program product is available on z/OS, OS/390, MVS/ESA, VM/ESA, and VSE/ESA operating systems.

If the HLAS does not come installed on your operating system, you will need to order and install it. Refer to the following table to determine if the High Level Assembler is integrated with your operating system .

Operating System                HLAS V1R2            HLAS V1R3
 
MVS/ESA V5R1 and later          Order                Order
 (5655-068, 5655-069)            separately           separately
 
OS/390 R1, R2, R3               Integrated           Order
 (5645-001)                                           separately
 
OS/390 V2R4,V2R5,V2R6           Integrated           Order
 (5647-A01)                                           separately
 
OS/390 V2R7,V2R8                Not                  Integrated
 (5647-A01)                      applicable
 
Z/OS V1R1                       Not                  Integrated
 (5694-A01)                      applicable
 
VM/ESA V2R2 and V2R3            Order                Order
 (5654-030)                      separately           separately
 
VM/ESA V2R4                     Not                  Order
 (5654-030)                      applicable           separately
 
VSE/ESA V1R4.3, V1R4.4          Order                Order
 (5750-ACD)                      separately           separately
 
VSE/ESA V2R2, V2R3              Integrated           Order
 (5690-VSE)                                           separately
 
VSE/ESA V2R4                    Not                  Integrated
 (5690-VSE)                      applicable

In addition to the HLAS requirements, the following authorized program analysis reports (APARs) are required:

  • DFSMS/MVS® OW26738 is required for the binder.
  • DFSMS/MVS OW27802 is required for the linkage editor.
  • VM/ESA VM61534 is required for the linkage editor.

In addition to providing the generation function for this release, ACF/SSP provides utilities for loading, dumping, and trace formatting for NCP when operating with OS/390, MVS/ESA, VM/ESA, VSE/ESA operating systems.

Support for a new VTAM® command to trigger Non-Disruptive Route Switch (NDRS) for 3745 subarea connections requires the SNA Services feature of SecureWay® Communications Server for OS/390 V2R8.

Use of the partitioned emulation programming extension of ACF/NCP for these releases requires the appropriate release of the Emulation Program for IBM Communication Controllers, as indicated in the Compatibility section.

Compatibility: ACF/NCP V7R8.1 is supported in conjunction with the following licensed programs, at the function level of the version and release, for as long as program services are available for the particular version and release.

  • Host-resident programs:
    • ACF/SSP V4R8.1
    • z/OS V1R1 or later
    • eNetwork Communications Server for OS/390 Release 1, or later
    • ACF/VTAM® V4R4
    • ACF/VTAM V4R3
    • ACF/VTAM V4R2
    • ACF/VTAM V3R4.2
    • ACF/VTAM V3R4.1
    • ACF/VTAM V3R4
    • ACF/Telecommunication Access Method (TCAM) V2R4 (refer to Note 1)
    • TME10 NetView for OS/390 Release 1, or later
    • NetView V3R1
    • NetView V2R4
    • NetView V2R3
    • NetView Performance Monitor V2R4
    • NetView Performance Monitor V2R3
    • NetView Performance Monitor V2R2
    • NetView Performance Monitor V1R6
    • NTuneMON V2R6
    • Transaction Processing Facility (TPF) V4 (refer to Note 2)
    • TCP/IP V3R2
    • TCP/IP V3R1
    • TCP/IP V2R4
  • Controller-resident programs:
    • Emulation Program (EP) V1R14
    • Network Terminal Option (NTO) V1R11
    • Network Routing Facility (NRF) V1R9
    • X.25 NCP Packet Switching Interface (NPSI) V3R9
    • X.25 SNA Interconnection (XI) V2R4.2
  • Controller RPQs:
    • Airlines Line Control RPQs (refer to Note 3)

Notes:

  1. Channel attachment of ACF/TCAM V2R4 to the IBM 3745 requires the appropriate PTF on TCAM V2R4.
  2. Either Type 5 or Type 2.1 attachment capability is provided. Type 5 attachment requires SNA Interconnection (SNI) support in the channel attached NCP. Refer to Note 3 for related 3745 RPQs supported by NCP V7R8.
  3. NCP V7R8.1, through the Airlines Line Control Interconnect feature, provides support for the 3745 RPQs listed below.

    The Airlines Control Program (ALCI) is a "no charge" RPQ feature offered by NCP. You no longer need to order and install separate media to operate this program. The ALCI code is now incorporated in the base ACF/NCP code. In order to identify the number of users, IBM still requires you to obtain an ALCI license by ordering the "no charge" ALCI feature number. Although, the ALCI code is included in the new release of NCP V7R8, it is recommended that you reference the 3745 RPQs (listed below) for hardware requirements.

RPQ
Number                Controller
 
7L1092                3745 Models 210, 310, 410,
                       610, 21A, 31A, 41A, 61A
7L1216                3745 Models 210, 310, 410,
                       610, 21A, 31A, 41A, 61A
7L1148                3745 Model 170

The following levels of ACF/NCP are supported as communicating with ACF/NCP V7R8.1 as long as program services are available for the particular level of ACF/NCP.

  • ACF/NCP V7R8.1
  • ACF/NCP V7R8
  • ACF/NCP V7R7
  • ACF/NCP V7R6
  • ACF/NCP V7R5
  • ACF/NCP V7R4
  • ACF/NCP V7R3
  • ACF/NCP V6R3
  • ACF/NCP V5R4
  • ACF/NCP V4R3.1

Refer to the program directory for additional details relative to the compatibility requirements for ACF/NCP V7R8 for z/OS, OS/390 (MVS/ESA), VM/ESA, and VSE/ESA.

Planning Information

Customer Responsibilities: ACF/NCP V7R8.1 will replace ACF/NCP V7R8 shipped after July 27, 2001.

ACF/SSP V4R8.1 will replace ACF/SSP V4R8 shipped after July 27, 2001.

ACF/NCP V7R8.1 and ACF/SSP V4R8.1 will be shipped from the IBM Software Delivery and Fulfillment (SDF) after availability (July 27, 2001).

Direct Customer Support: Installation and technical support are provided by the S/390® Support Family. For more information on services available, call 800-IBM-4YOU (426-4968) and ask for the IBM Support Family Inside Sales.

Security, Auditability, and Control

If sensitive data is sent over external communications facilities, user management may wish to pursue the application of cryptography. The customer is responsible for evaluation, selection, and implementation of security features, administrative procedures, and appropriate controls in application systems and communication facilities.

Customer Financing

IBM Global Financing offers attractive financing to credit-qualified commercial and government customers and Business Partners in more than 40 countries around the world. IBM Global Financing is provided by the IBM Credit Corporation in the United States. Offerings, rates, terms and availability may vary by country. Contact your local IBM Global Financing organization. Country organizations are listed on the Web at:

Ordering Information

Registered customers can access IBMLink™ for ordering information and prices.

Current Licensees

A program reorder form which may be returned directly to IBM SDF will be sent to current licensees of:

  • ACF/NCP Version 7 (5648-063)
  • ACF/SSP Version 4 for z/OS, OS/390, MVS (5655-041)
  • ACF/SSP Version 4 for VM (5654-009)
  • ACF/SSP Version 4 for VSE

The mailing of these reorder forms is scheduled to be completed by August 25, 2001. Reorder forms returned to IBM SDF will be processed within ten work days of receipt.

Current licensees of ACF/NCP V7 and ACF/SSP V4 can reorder and receive the product tapes listed below.

  • ACF/NCP V7R8 for z/OS, OS/390 (MVS), VM, VSE
  • ACF/SSP V4R8 for OS/390 (MVS)
  • ACF/SSP V4R8 for VM
  • ACF/SSP V4R8 for VSE

The table below shows the NCP V7R8.1 enhancements that can be separately ordered as APARs. The table also notes the oldest NCP V7 release the APAR can be applied to.

                                                       Oldest
                                                       NCP
                                                       Release
                        MVS &                          APAR
                        VM APAR        VSE APAR        Available
Enhancement             Number         Number          for
 
NCP Module Status       IR45560        IR45563         V7R7
 
Accept ECLTYPE          IR43197        IR43209         V7R7
 (PHYS, ANY) Data
 during Slowdown
 
Eliminate IOH           IR43197        IR43209         V7R7
 Halt 8401 Flow
 Control
 
Reduce RNRs for         IR43743        IR43744         V7R6
 TIC3 Subarea
 Connections
 
Hung TG Reference       IR45561        IR45564         V7R3
 
IPM Extension           IR45562        IR45565         V7R3
 to TG Trace

New Licensees

Ordering Information for ACF/NCP V7: For ordering information on the base program, ACF/NCP V7R8.1 (5648-063), refer to the following announcements:

  • Software Announcement 297-342 , dated September 9, 1997
  • Software Announcement 298-332 , dated September 22, 1998
  • Withdrawal Announcement 998-294 , dated September 29, 1998

Orders for new licenses will be accepted now. Shipment will begin on the planned availability date of July 27, 2001.

Orders that ship prior to the planned availability date will receive ACF/NCP V7R8.0.

Orders that ship after the planned availability date will receive ACF/NCP V7R8.1.

New users of ACF/NCP V7R8.1 should specify:

          Type           Model
 
          5648           063

Basic Machine-Readable Material: The following basic machine-readable material is available:

Program            Usage       Feature       Distribution
Environment        Tier        Number        Media
 
z/OS & OS/390      All         5801          9/6250 BPI tape
 (MVS)
z/OS & OS/390      All         5802          3480 tape cartridge
 (MVS)
z/OS & OS/390      All         6498          4-mm DAT tape
 (MVS)
VM                 All         5831          9/6250 BPI tape
VM                 All         5832          3480 tape cartridge
VM                 All         6488          4-mm DAT tape
VSE                All         5851          9.6250 BPI tape
VSE                All         5852          3480 tape cartridge
VSE                All         6188          4-mm DAT tape

Ordering Information for ACF/SSP V4: For ordering information on the base program SSP Version 4 refer to the following announcements:

  • Software Announcement 293-623 , dated October 28, 1993
  • Software Announcement 298-355 , dated September 29, 1998
  • Withdrawal Announcement 998-294 , dated September 28, 1998
  • Software Announcement 299-052 , dated February 22, 1999

Orders for new licenses are now being accepted. Shipment will begin on the planned availability date of July 27, 2001.

Orders that ship prior to the planned availability date will receive ACF/SSP Version 4 Release 8.0.

Orders that ship after the planned availability date will receive ACF/SS Version 4 Release 8.1.

New users of ACF/SSP Version 4 should specify:

Operating System              Type                Model
 
z/OS                          5694                A01
OS/390 (MVS/ESA)              5655                041
VM/ESA                        5654                009
VSE/ESA                       5686                064

Basic Machine-Readable Material: The following basic machine-readable material is available:

                              Feature             Distribution
Program Number                Number              Medium
 
5655-041                      5801                9/6250 tape
 (z/OS & OS/390)              5802                3480 cartridge
 (MVS/ESA)                    5700                4-mm DAT tape
 
5654-009 (VM/ESA)             5801                9/6250 tape
                              5802                3480 cartridge
                              5700                4-mm DAT tape
 
5686-064 (VSE/ESA)            5801                9/6250 tape
                              5802                3480 cartridge
                              5700                4-mm DAT tape

Basic License: The following new ordering information pertains to NCP Tier C effective June 12, 2001.

  • 3746 Model 900 users ordering the "No Charge" NCP Tier C (feature numbers 3908 or 3910) and installing a new Network Node Processor Type 4 (#5424) or Type 5 (#5425) will not be required to license Tier A or Tier B for the adapters on the 3746 Model 900.
  • The license for Tier A or Tier B is waived if the associated 3746 Model 900 Controller contains a Network Node Processor Type 4 (#5424) or Type 5 (#5425) and the "No Charge" NCP Tier C is licensed.
  • A new license for the "No Charge" NCP Tier C is not available for a Network Node Processor upgraded to Type 3 (#5049), Type 4 (#5448), or Type 5 (#5427).
  • New orders for the "No Charge" NCP Tier C (#3908 or #3910) are only available for users running NCP Version 7 in conjunction with an installed Network Node Processor Type 4 (#5424) Type 5 (#5425).
  • The "No Charge" NCP Tier C software features (#3908 and #3910) can no longer be ordered for a 3746 Model 900 configured with a Network Node Processor Type 1 (#5022), Type 2 (#5122), or Type 3 (#5423).

Orders for new licenses will be accepted now.

Shipment will begin on the planned availability date.

  • Orders that ship prior to the planned availability date will receive ACF/NCP V7R8.0, ACF/SSP V4R8.0.
  • Orders that ship after the planned availability date will receive ACF/NCP V7R8.1, ACF/SSP V4R8.1.

New users of ACF/NCP Version 7 Release 8.1 should specify:

          Type           Model
 
          5648           063

New users of ACF/SSP Version 4 Release 8.1 should specify:

                                        Type               Model
 
For z/OS, OS/390, MVS/ESA               5655               041
For VM/ESA                              5654               009
For VSE/ESA                             5686               064

Unlicensed Documentation: A memo, program directory, and one copy of the following publications will be supplied automatically with the basic machine-readable material.

Publications for ACF/NCP V7R8.1

  • Licensed Program Specifications — GC31-6226
  • NCP Version 7 Migration Guide — SC30-4024
  • NCP, SSP, and EP Resource Definition Guide — SC31-6223
  • NCP, SSP, and EP Resource Definition Reference — SC31-6224
  • Planning for NetView, NCP and VTAM — SC31-8063
  • Planning for Integrated Networks — SC31-8062
  • NCP,X25 Planning and Installation — SC30-3470

Publications for ACF/SSP V4R8.1

  • Licensed Program Specifications (z/OS, OS/390, MVS/ESA) — GC31-6229
  • Licensed Program Specifications (VM/ESA) — GC31-6227
  • Licensed Program Specifications (VSE/ESA) — GC31-6230
  • NCP, SSP, and EP Generation and Loading Guide — SC31-6221
  • NCP, SSP, and EP Messages and Codes — SC31-6222
  • NTune NCP Feature Reference — LY43-0039
  • NCP V7R8, SSPV4R8 and EPR14 Library Directory — SC30-4025
  • NCP, SSP, and EP Diagnosis Guide — LY43-0033
  • NCP, SSP, and EP Trace Analysis Hardware — LY43-0037

Displayable Softcopy Publications: ACF/NCP V7R8.1 and ACF/SSP V4R8.1 publications are also provided in displayable, softcopy form. All unlicensed and licensed manuals are included. The softcopy pubs are shipped on CD-ROM (LK2T-0414), IBM Online Library: IBM ACF/NCP, ACF/SSP, EP and X.25 NPSI and NTuneMON Softcopy Collection Kit. For your convenience, the CD-ROM also contains publications for several related products.

The first copy is available at no additional charge to licensees of basic materials of ACF/NCP (5648-063) by specifying feature number 7110.

Licensed Documentation: For information on Licensed Documentation, refer to the following:

  • Software Announcement 297-342 , dated September 9, 1997
  • Software Announcement 298-332 , dated September 22, 1998

Subsequent updates (technical newsletters or revisions between releases) to the publications shipped with the product will be distributed to the user of record for as long as a license for this software remains in effect. A separate publication order or subscription is not needed.

Customized Offerings

Most product media is shipped only via Customized Offerings (for example, CBPDO, ServerPac, or Systempac®). Non-customized items (CDs, diskettes, source media, media kits) will continue to be shipped via the stand-alone product.

IBM Operational Support Services — Support Line: Yes

Other Support: System/390®

Prices

Prices are unaffected by this announcement.

Order Now

 Use Priority/Reference Code: YE001
 
 Phone:     800-IBM-CALL
 Fax:       800-2IBM-FAX
 Internet:  ibm_direct@us.ibm.com
 Mail:      IBM Atlanta Sales Center
            Dept. YE001
            P.O. Box 2690
            Atlanta, GA  30301-2690

You can also contact your local IBM Business Partner or IBM representative. To identify them, call 800-IBM-4YOU.

Note: Shipments will begin after the planned availability date.

Trademarks

 
MVS, MVS/ESA, VSE/ESA, and IBMLink are trademarks of International Business Machines Corporation in the United States or other countries or both.
 
OS/390, ESCON, VM/ESA, DFSMS/MVS, VTAM, SecureWay, ACF/VTAM, S/390, Systempac, and System/390 are registered trademarks of International Business Machines Corporation in the United States or other countries or both.
 
Other company, product, and service names may be trademarks or service marks of others.