6 Configuring network features This chapter explains how to configure network to your z14 ZR1. It includes the following  sections: GLYPH<SM590000> 6.1, “Preparation for defining and customizing OSA-Express” on page 124 GLYPH<SM590000> 6.2, “Defining OSA Express to your I/O configuration” on page 124 GLYPH<SM590000> 6.3, “Customizing  OSA-Express using OSA Advanced facilities” on page 127 GLYPH<SM590000> 6.4, “Shared Memory Communications (SMC-R and SMC-D)” on page 138 GLYPH<SM590000> 6.5, “Channel-To-Channel connection” on page 138 123 ' Copyright IBM Corp. 2018, 2019. All rights reserved.