The TCP/IP stack dynamically creates 10GbE RoCE Express® interfaces for each configured PCI Express function ID (PFID). The stack activates all the configured 10GbE RoCE Express interfaces when the first SMC-R capable IPAQENET or IPAQENET6 interface is started. After the 10GbE RoCE Express interfaces are started, they remain active even when all SMC-R capable IPAQENET and IPAQENET6 interfaces are stopped. You can explicitly stop a 10GbE RoCE Express interface by using the VARY TCPIP,,STOP command. The name of the dynamically created 10GbE RoCE Express interfaces is in the form EZARIUTpffff, where p is the port number and ffff is the PFID.
In addition to stopping and starting the 10GbE RoCE Express interface, you can dynamically add or delete PFIDs from your TCP/IP profile by using the VARY TCPIP,,OBEYFILE command.