IBM Systems magazine - January/February 2020 - 16

HOT TOPICS
Run Linux on IBM Z Docker Containers Inside z/OS
Networking support and best practices for zCX

E

verybody knows that Linux*
runs on IBM Z*, but what if
you could build a hybrid workload consisting of native z/OS* software and Linux on Z software, both
running in the same z/OS image?
Starting from z/OS V2R4, with
an exciting new feature named IBM
z/OS Container Extensions (zCX),
you have a new way to run Linux on
IBM Z Docker containers in direct
support of z/OS workloads on the
same z/OS system. It builds much
more flexibility into operations on
IBM Z by modernizing and extending z/OS applications.
"With zCX, clients will be able
to access the most recent development tools and processes available in Linux on the Z ecosystem,
giving developers the flexibility to
build new, cloud-native containerized apps and deploy them on
z/OS without requiring Linux or a
Linux partition," says Ross Mauri,
general manager for IBM (ibm.
co/2W04VWW).
See the zCX website (ibm.
co/2JaDzWe) if you're interested in
more details.

IBM zCX
Networking Support
z/OS V2R4 Communications Server
has added network support for zCX.
The Communications Server
support provides network support
for zCX workloads by introducing
a new type of DVIPA called a zCX
DVIPA, created with the VIPARange
statement. The zCX DVIPA represents an instance of a Docker

FIGURE 1: zCX NETWORK SUPPORT IS PROVIDED BY z/OS zCX VIRTUALIZATION SUPPORT AND z/OS COMMUNICATIONS SERVER (TCP/IP).

server allowing TCP/IP to provide unique IP routing and apply
various TCP/IP QoS functions for
container workloads
running within each
Docker server address
space. For a high-level
zCX network overview
of key concepts, see
Figure 1 (above).
The Communications Server VTAM support introduces a new type of zCX network
transport that dynamically provides optimized internal network
connectivity from each Docker
server ASID to TCP/IP for providing
access to and from colocated
z/OS applications, and to and from

Jerry Stevens is a senior technical staff member and Master Inventor with IBM
z/OS Enterprise Networking Solutions Architecture, Strategy and Design team. 
Erin Zhang is the content designer for Enterprise Network Solutions in
IBM Systems.
16 | JANUARY/FEBRUARY 2020 IBMSYSTEMSMAG.COM

the external network. The VTAM
support also introduces the zCX Direct Network Interface Component
(DNIC) that provides
a Virtual NIC for the
Docker server virtualization environment.
Figure 2 (page 17)
provides an overview
of the z/OS Communications Server support
provided for the zCX environment.

Steps to Enable Network
Support for zCX
1.

Use the z/OSMF workflows to
create the zCX environment.
Here is the zCX network information needed for each zCX
instance (inputs to z/OSMF zCX
provisioning workflow):
*
*

zCX server IP address-an
IPv4 zCX DVIPA
DNS server IP addresses
(up to two for resiliency)


http://ibm.co/2W04VWW http://ibm.co/2W04VWW http://ibm.co/2JaDzWe http://ibm.co/2JaDzWe http://www.IBMSYSTEMSMAG.COM

IBM Systems magazine - January/February 2020

Table of Contents for the Digital Edition of IBM Systems magazine - January/February 2020

Table of Contents
Editor's Desk: A new IBM Z cloud era
Currents: Bringing new talent to the mainframe workforce
Currents: On the web
Currents: Accessing electricity in Africa
Currents: Solutions
Currents: AI keeps pets engaged and entertained
Partner POV: The flexibility of z/OS means industry interoperability, but with it comes application programming risks
Hot Topics: Networking support and best practices for zCX
Cover Story: IBM Z Integration: The Next Chapter of the Cloud Journey: Data protection, privacy and enhanced functionality enable enterprises to confidently expose data and applications to the cloud
Feature 1: Cutting-Edge Innovation: Red Hat OpenShift, IBM Cloud Paks and more facilitate digital transformation
Feature 2: DevOps and IBM Z: You've Come a Long Way: IBM's three-pronged DevOps approach helps organizations leverage the IBM Z platform, tools and open-source strategies
TECH Showcase: Leveraging IBM z15, Parallel Sysplex, IBM Z Open Development, zCX and more is key for modernization
Techbits: IBM Lab Services enables next-gen IBM Z and LinuxONE systems
Techbits: Ask the Expert: EKMF and pervasive encryption
Beyond the Box: Everledger CEO and Founder Leanne Kemp on running an organization with purpose
Reference Point - Global Events, Education, Resources for IBM Z
2020 IBM Z Solutions Directory
IBM Systems magazine - January/February 2020 - Intro
IBM Systems magazine - January/February 2020 - Cover1
IBM Systems magazine - January/February 2020 - Cover2
IBM Systems magazine - January/February 2020 - 1
IBM Systems magazine - January/February 2020 - 2
IBM Systems magazine - January/February 2020 - 3
IBM Systems magazine - January/February 2020 - Table of Contents
IBM Systems magazine - January/February 2020 - 5
IBM Systems magazine - January/February 2020 - Editor's Desk: A new IBM Z cloud era
IBM Systems magazine - January/February 2020 - 7
IBM Systems magazine - January/February 2020 - Currents: Bringing new talent to the mainframe workforce
IBM Systems magazine - January/February 2020 - Currents: Solutions
IBM Systems magazine - January/February 2020 - Currents: AI keeps pets engaged and entertained
IBM Systems magazine - January/February 2020 - 11
IBM Systems magazine - January/February 2020 - 12
IBM Systems magazine - January/February 2020 - 13
IBM Systems magazine - January/February 2020 - Partner POV: The flexibility of z/OS means industry interoperability, but with it comes application programming risks
IBM Systems magazine - January/February 2020 - 15
IBM Systems magazine - January/February 2020 - Hot Topics: Networking support and best practices for zCX
IBM Systems magazine - January/February 2020 - 17
IBM Systems magazine - January/February 2020 - 18
IBM Systems magazine - January/February 2020 - 19
IBM Systems magazine - January/February 2020 - Cover Story: IBM Z Integration: The Next Chapter of the Cloud Journey: Data protection, privacy and enhanced functionality enable enterprises to confidently expose data and applications to the cloud
IBM Systems magazine - January/February 2020 - 21
IBM Systems magazine - January/February 2020 - 22
IBM Systems magazine - January/February 2020 - 23
IBM Systems magazine - January/February 2020 - 24
IBM Systems magazine - January/February 2020 - 25
IBM Systems magazine - January/February 2020 - Feature 1: Cutting-Edge Innovation: Red Hat OpenShift, IBM Cloud Paks and more facilitate digital transformation
IBM Systems magazine - January/February 2020 - 27
IBM Systems magazine - January/February 2020 - 28
IBM Systems magazine - January/February 2020 - 29
IBM Systems magazine - January/February 2020 - 30
IBM Systems magazine - January/February 2020 - 31
IBM Systems magazine - January/February 2020 - Feature 2: DevOps and IBM Z: You've Come a Long Way: IBM's three-pronged DevOps approach helps organizations leverage the IBM Z platform, tools and open-source strategies
IBM Systems magazine - January/February 2020 - 33
IBM Systems magazine - January/February 2020 - 34
IBM Systems magazine - January/February 2020 - 35
IBM Systems magazine - January/February 2020 - 36
IBM Systems magazine - January/February 2020 - 37
IBM Systems magazine - January/February 2020 - 38
IBM Systems magazine - January/February 2020 - TECH Showcase: Leveraging IBM z15, Parallel Sysplex, IBM Z Open Development, zCX and more is key for modernization
IBM Systems magazine - January/February 2020 - 40
IBM Systems magazine - January/February 2020 - 41
IBM Systems magazine - January/February 2020 - 42
IBM Systems magazine - January/February 2020 - 43
IBM Systems magazine - January/February 2020 - 44
IBM Systems magazine - January/February 2020 - Techbits: IBM Lab Services enables next-gen IBM Z and LinuxONE systems
IBM Systems magazine - January/February 2020 - 46
IBM Systems magazine - January/February 2020 - Techbits: Ask the Expert: EKMF and pervasive encryption
IBM Systems magazine - January/February 2020 - Beyond the Box: Everledger CEO and Founder Leanne Kemp on running an organization with purpose
IBM Systems magazine - January/February 2020 - Cover3
IBM Systems magazine - January/February 2020 - Cover4
IBM Systems magazine - January/February 2020 - Reference Point - Global Events, Education, Resources for IBM Z
IBM Systems magazine - January/February 2020 - SD
IBM Systems magazine - January/February 2020 - 2020 IBM Z Solutions Directory
IBM Systems magazine - January/February 2020 - CoverSD2
IBM Systems magazine - January/February 2020 - SD1
IBM Systems magazine - January/February 2020 - SD2
IBM Systems magazine - January/February 2020 - SD3
IBM Systems magazine - January/February 2020 - SD4
IBM Systems magazine - January/February 2020 - CT1
IBM Systems magazine - January/February 2020 - CT2
IBM Systems magazine - January/February 2020 - SD5
IBM Systems magazine - January/February 2020 - SD6
IBM Systems magazine - January/February 2020 - SD7
IBM Systems magazine - January/February 2020 - SD8
IBM Systems magazine - January/February 2020 - SD9
IBM Systems magazine - January/February 2020 - SD10
IBM Systems magazine - January/February 2020 - SD11
IBM Systems magazine - January/February 2020 - SD12
IBM Systems magazine - January/February 2020 - SD13
IBM Systems magazine - January/February 2020 - SD14
IBM Systems magazine - January/February 2020 - SD15
IBM Systems magazine - January/February 2020 - SD16
IBM Systems magazine - January/February 2020 - SD17
IBM Systems magazine - January/February 2020 - SD18
IBM Systems magazine - January/February 2020 - SD19
IBM Systems magazine - January/February 2020 - SD20
IBM Systems magazine - January/February 2020 - SD21
IBM Systems magazine - January/February 2020 - SD22
IBM Systems magazine - January/February 2020 - SD23
IBM Systems magazine - January/February 2020 - SD24
IBM Systems magazine - January/February 2020 - SD25
IBM Systems magazine - January/February 2020 - SD26
IBM Systems magazine - January/February 2020 - SD27
IBM Systems magazine - January/February 2020 - SD28
IBM Systems magazine - January/February 2020 - SD29
IBM Systems magazine - January/February 2020 - SD30
IBM Systems magazine - January/February 2020 - SD31
IBM Systems magazine - January/February 2020 - SD32
IBM Systems magazine - January/February 2020 - SD33
IBM Systems magazine - January/February 2020 - SD34
IBM Systems magazine - January/February 2020 - SD35
IBM Systems magazine - January/February 2020 - SD36
IBM Systems magazine - January/February 2020 - SD39
IBM Systems magazine - January/February 2020 - SD40
IBM Systems magazine - January/February 2020 - SD41
IBM Systems magazine - January/February 2020 - SD42
IBM Systems magazine - January/February 2020 - SD43
IBM Systems magazine - January/February 2020 - SD44
IBM Systems magazine - January/February 2020 - SD45
IBM Systems magazine - January/February 2020 - SD46
IBM Systems magazine - January/February 2020 - SD47
IBM Systems magazine - January/February 2020 - SD48
IBM Systems magazine - January/February 2020 - SD49
IBM Systems magazine - January/February 2020 - SD50
IBM Systems magazine - January/February 2020 - SD51
IBM Systems magazine - January/February 2020 - SD52
IBM Systems magazine - January/February 2020 - SD53
IBM Systems magazine - January/February 2020 - SD54
IBM Systems magazine - January/February 2020 - SD55
IBM Systems magazine - January/February 2020 - SD56
IBM Systems magazine - January/February 2020 - CoverSD3
IBM Systems magazine - January/February 2020 - CoverSD4
http://www.ibmsystemsmagmainframedigital.com/mspcomm/ibmsystemsmag/ibmsystems_mainframe_20201112
http://www.ibmsystemsmagmainframedigital.com/mspcomm/ibmsystemsmag/ibmsystems_mainframe_20200910
http://www.ibmsystemsmagmainframedigital.com/mspcomm/ibmsystemsmag/ibmsystems_mainframe_20200708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20200506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20200304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20200102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/2020mfse
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20191112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20190910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20190708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20190506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20190304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/relevantz_20190102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/2019mfse
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20190102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20181112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20180910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20180708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20180506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20180304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20180102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/2018mfse
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20171112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20170910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20170910_v2
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20170708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20170506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20170304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_sesupp
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20170102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_linuxsupp
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20161112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/MainframeSecurity
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20160910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20160708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20160506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20160304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20160102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20151112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20150910_se
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20150910
http://www.ibmsystemsmagmainframedigital.com/MFSkills
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20150708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20150506_supp
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20150506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20150304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20150102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20141112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20140910_v2
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20140910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20140708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_gt_201405
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/BigData
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20140506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20140304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20140102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20131112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20130910_v2
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20130910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20130708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20130506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20130304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20130102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20121112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/buyersguide2013
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20120910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20120708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20120506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20120304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20120102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/ibmsystems_mainframe_2012bg
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20111112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20110910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20110708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20110506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20110304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20110102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20101112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20100910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20100910_bg
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20100708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20100506
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20100304
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20100102
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20091112
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20090910
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20090708
http://www.ibmsystemsmagmainframedigital.com/nxtbooks/ibmsystemsmag/mainframe_20090506
https://www.nxtbook.com/nxtbooks/ibmsystemsmag/mainframe_20090304
https://www.nxtbookmedia.com