Receive (Rx) rings and transmit (Tx) rings are NIC hardware resources through which the system receives and sends network packets, respectively. These rings enable you to tune the system's packet processing to increase efficiency, for example, by increasing the number of receive rings of a link that is receiving a large volume of packets.

Note - The current Oracle Solaris release supports kernel network data path bypass for the User Datagram Protocol (UDP) but only on physical, not virtual, interfaces. Also, a bypass socket can only be associated with one kernel data path bypass-capable network interface for both send and receive operations. See Using the Network Data Path Bypass Capability for UDP in Administering TCP/IP Networks, IPMP, and IP Tunnels in Oracle Solaris 11.4.

Managing Network Virtualization and Network Resources in Oracle® Solaris 11.4

Managing NIC Rings

Managing Network Virtualization and Network Resources in Oracle^® Solaris 11.4