The supported operating systems are listed in Table 7-8 on page 255 and Table 7-9 on  page 257. HiperSockets Multiple Write Facility HiperSockets support of IPV6 HiperSockets Layer 2 support HiperSockets network traffic analyzer for Linux on Z OSA-Express7S 25 Gigabit Ethernet SR 292  IBM z14 (3906) Technical Guide OSA-Express7S 25GbE (FC 0429) is installed in the PCIe I/O drawer and has one 25GbE  physical port and requires 25GbE optics and Ethernet switch 25GbE support (negotiation  down to 10GbE is not supported).  Linux on Z tools can be used to format, edit, and process the trace records for analysis by  system programmers and network administrators. Introduced with IBM System z10, HiperSockets network traffic analyzer (HS NTA) provides  support for tracing Layer2 and Layer3 HiperSockets network traffic in Linux on Z. This support  allows Linux on Z to control the trace for the internal virtual LAN to capture the records into  host memory and storage (file systems). The supported operating systems are listed in Table 7-8 on page 255 and Table 7-9 on  page 257. Layer 2 support can help facilitate server consolidation. Complexity can be reduced, network  configuration is simplified and intuitive, and LAN administrators can configure and maintain  the mainframe environment the same way as they do a non-mainframe environment. HiperSockets devices are protocol-independent and Layer 3-independent. Each  HiperSockets device features its own Layer 2 Media Access Control (MAC) address. This  MAC address allows the use of applications that depend on the existence of Layer 2  addresses, such as Dynamic Host Configuration Protocol (DHCP) servers and firewalls. For flexible and efficient data transfer for IP and non-IP workloads, the HiperSockets internal  networks on z14 can support two transport modes: Layer 2 (Link Layer) and the current Layer  3 (Network or IP Layer). Traffic can be Internet Protocol (IP) Version 4 or Version 6 (IPv4,  IPv6) or non-IP (AppleTalk, DECnet, IPX, NetBIOS, or SNA). IPv6 is expected to be a key element in the future of networking. The IPv6 support for  HiperSockets allows compatible implementations between external networks and internal  HiperSockets networks. The supported operating systems are listed in Table 7-8 on page 255  and Table 7-9 on page 257. Support for this function is required by the sending operating system. For more information,  see “HiperSockets” on page 183. The supported operating systems are listed in Table 7-8 on  page 255. The HiperSockets Multiple Write Facility allows the streaming of bulk data over a  HiperSockets link between two LPARs. Multiple output buffers are supported on a single  Signal Adapter (SIGA) write instruction. The key advantage of this enhancement is that it  allows the receiving LPAR to process a much larger amount of data per I/O interrupt. This  process is transparent to the operating system in the receiving partition. HiperSockets  Multiple Write Facility with fewer I/O interrupts is designed to reduce processor utilization of  the sending and receiving partitions.