DB2 database server network setup
A fast LPAR-to-LPAR connection is established between the application server and the database server.
IBM® System z® mainframes offer a reliable and fast internal LPAR-to-LPAR connection method called HiperSockets™. HiperSockets simulate a QDIO network adapter and provide a high-speed TCP/IP communication.
The default HiperSockets frame size of 16 KB sets a TCP/IP MTU size of 8192. If required, the HiperSockets frame size can be changed in the IBM System z I/O Control Data Set (IOCDS).
The default HiperSockets frame size fits for the System Under Test (SUT), because only small or medium size network packages are expected for the benchmark application.
For details about the IOCDS, see:
Input/Output Configuration Program User's Guide, SB10-7037-10
https://www.ibm.com/servers/resourcelink (registration required)
For details about HiperSockets see:
HiperSockets Implementation Guide, SG24-6816