HiperSockets Virtual Switch Bridge HiperSockets Multiple Write Facility HiperSockets support of IPV6 The HiperSockets Virtual Switch Bridge is implemented on z14 M0x, z14 ZR1, z13, z13s,  zEC12, and zBC12. With the HiperSockets Virtual Switch Bridge, z/VM virtual switch is  enhanced to transparently bridge a guest virtual machine network connection on a  HiperSockets LAN segment. This bridge allows a single HiperSockets guest virtual machine  network connection to also directly communicate with the following components: The supported operating systems are listed in Table 7-8 on page 221 and Table 7-9 on  page 223. 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. Support for this function is required by the sending operating system. For more information,  see “HiperSockets” on page 151. The supported operating systems are listed in Table 7-8 on  page 221. 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 221  and Table 7-9 on page 223. GLYPH<SM590000> Other guest virtual machines on the virtual switch GLYPH<SM590000> External network hosts through the virtual switch OSA UPLINK port For flexible and efficient data transfer for IP and non-IP workloads, the HiperSockets internal  networks on z14 ZR1 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). 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. 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. The supported operating systems are listed in Table 7-8 on page 221 and Table 7-9 on  page 223. Introduced with IBM System z10, HiperSockets network traffic analyzer (HS NTA) supports  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). HiperSockets Layer 2 support HiperSockets network traffic analyzer for Linux on Z Chapter 7. Operating system support  257