Draft Document for Review September 23, 2019 1:36 am 8860ch02.fm The HiperSockets Completion Queue function is designed to allow HiperSockets to  transfer data synchronously if possible, and asynchronously if necessary. This function  combines ultra-low latency with more tolerance for traffic peaks.  With the asynchronous support, during high volume situations, data can be temporarily  held until the receiver has buffers available in its inbound queue. This function provides  end-to-end performance improvement for LPAR to LPAR communication. The z/VM virtual switch is enhanced to transparently bridge a guest virtual machine  network connection on a HiperSockets LAN segment. z/VM 6.2 or later, TCP/IP, and  Performance Toolkit APARs are required for this support. This bridge allows a single  HiperSockets guest virtual machine network connection to also directly communicate with  the following devices:  In z/OS, HiperSockets has been enhanced for zIIP exploitation. Specifically, the z/OS  Communications Server allows the HiperSockets Multiple Write Facility processing for  large outbound messages that originate from z/OS to be run on a zIIP. z/OS application workloads that are based on XML, HTTP, SOAP, Java, and traditional file  transfer can benefit from zIIP enablement by lowering general-purpose processor usage. When the workload is eligible, the HiperSockets device driver layer processing (write  command) is redirected to a zIIP, which unblocks the sending application. For more information about the technical details of each function, see  IBM Z Connectivity  Handbook , SG24-5444. The OSA-ICC function of the OSA-Express 1000Base-T feature supports TN3270  enhancements (TN3270E) and non-SNA DFT 3270 emulation. Planning for an IBM Z z15  OSA-ICC implementation requires input from a number of disciplines within a customer  organization: In HCD, the OSA-Express feature must be defined to operate as an Integrated Console  Controller (ICC). Configuration requirements are as follows:  During an upgrade from an existing IBM Z server to a z15, the same definitions can be used  for the new machine as on the source configuration. GLYPH<SM590000> IBM Z server I/O subsystem configuration: The same basic rules for adding a OSA-ICC  adapter apply as to any other new device. GLYPH<SM590000> Operating system configuration: To have a Nucleus Initialization Program (NIP) console  available, make sure that the correct device number is defined in the HCD Operating  system  Work with consoles  dialog. GLYPH<SM590000> IBM Z server I/O subsystem configuration GLYPH<SM590000> Operating system configuration GLYPH<SM590000> OSA-Express feature configuration GLYPH<SM590000> Ethernet LAN configuration GLYPH<SM590000> Client TN3270E configuration GLYPH<SM590000> HiperSockets Virtual Switch Bridge Support – Other guest virtual machines on the virtual switch – External network hosts through the virtual switch OSA UPLINK port GLYPH<SM590000> zIIP-Assisted HiperSockets for large messages 2.8.7 Defining the console (OSA-ICC) 28  IBM z15 (8561) Configuration Setup