Intranode Management Network; Intraensemble Data Network; Osa-Express5S And Osa-Express4S Ncp Support - IBM z13s Technical Manual

7.3.49 Intranode management network

The INMN is one of the ensemble's two private and secure internal networks. The INMN is
used by the Unified Resource Manager functions.
The INMN is a private and physically isolated 1000Base-T Ethernet internal platform
management network. It operates at 1 Gbps, and connects all resources (CPC components)
of an ensemble node for management purposes. It is pre-wired, internally switched,
configured, and managed with full redundancy for high availability.
The z196 introduced the OSA-Express for Unified Resource Manager (OSM) CHPID type.
INMN requires two OSA-Express5S 1000BASE-T or OSA-Express4S 1000BASE-T ports
from two different OSA-Express5S 1000BASE-T or OSA-Express4S 1000BASE-T features,
which are configured as CHPID type OSM. One port per CHPID is available with CHPID type
OSM.
The OSA connection is through the system control hub (SCH) on the z13s to the HMC
network interface.

7.3.50 Intraensemble data network

The IEDN is one of the ensemble's two private and secure internal networks. The IEDN
provides applications with a fast data exchange path between ensemble nodes. Specifically, it
is used for communications across the virtualized images (LPARs, z/VM virtual machines,
and blade LPARs).
The IEDN is a private and secure 10 Gbps Ethernet network that connects all elements of an
ensemble. It is access-controlled by using integrated virtual LAN (VLAN) provisioning. No
client-managed switches or routers are required. The IEDN is managed by the primary HMC
that controls the ensemble. This configuration helps reduce the need for firewalls and
encryption, and simplifies network configuration and management. It also provides full
redundancy for high availability.
The z196 introduced the OSX CHPID type. The OSA connection is from the z13s to the
top-of-rack (ToR) switches on zBX.
The IEDN requires two OSA-Express5S or OSA-Express4S 10 GbE ports that are configured
as CHPID type OSX.

7.3.51 OSA-Express5S and OSA-Express4S NCP support

The OSA-Express5S 1000BASE-T Ethernet and OSA-Express4S 1000BASE-T Ethernet
features can provide channel connectivity from an operating system in a z13s to IBM
Communication Controller for Linux on z Systems (CCL). This configuration uses the Open
Systems Adapter for Network Control Program (NCP) (CHPID type OSN) in support of the
Channel Data Link Control (CDLC) protocol. OSN eliminates the requirement for an external
communication medium for communications between the operating system and the CCL
image.
The data flow of the LPAR to the LPAR is accomplished by the OSA-Express5S or
OSA-Express4S feature without ever exiting the card. The OSN support allows multiple
connections between the CCL image and the operating system, such as z/OS or z/TPF. The
operating system must be in the same physical server as the CCL image.
274
IBM z13s Technical Guide