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Hipersockets for virtual lans between logical partitions within a zenterprise system

HiperSockets, formally recognized as internal queued direct input/output (iQDIO), is a core feature of the zEC12, z196, and z114 models, enabling the creation of up to 32 high-speed virtual LANs. This functionality is engineered to reduce both system and network overhead, optimizing performance and resource allocation.

This innovative technology allows for the customization of network traffic capacity, ensuring optimal performance without the need for an external network. This not only conserves valuable system and network resources but also reduces costs associated with network attachments, thereby enhancing both availability and performance.

By eliminating the need for I/O subsystem operations and external network connections for inter-partition communication within the same System z server, HiperSockets significantly enhances server consolidation efforts. It facilitates the connection of numerous virtual servers, offering a robust alternative to traditional coupling link configurations in Parallel Sysplex environments.

HiperSockets supports two primary transport modes within zEC12, z196, and z114 server internal networks:

  • Layer 2 (Link Layer)
  • Layer 3 (Network or IP Layer)

It accommodates a variety of traffic types, including IPv4, IPv6, and non-IP protocols such as AppleTalk, DECnet, IPX, NetBIOS, or SNA.

For additional details on HiperSockets and the Open Systems Adapter features, consult the IBM System z Connectivity Handbook (SG24-5444), available at IBM Redbooks.