For an IQD channel path type, HCM allows you to specify the following parameters:
- maximum frame size
- HCM allows you to specify a maximum frame size to be used for IQDIO requests on that channel path. For further information refer to z/OS V2R1.0 Communications Server: IP Configuration Guide
- IQD function
- Starting with processor types 2817 and 2818, the Internal Queued
Direct I/O (IQDIO) functions or the HiperSockets functions offers
two new options:
- integration with the intraensemble data network (IEDN) controlled by the zManager functions which provide access controls, virtualization and management functions necessary to secure and manage the IEDN. This functionality is called extended IQD (IQDX).
- bridging an IQD channel to an external (customer managed) network
To support these functions, for IQD channels, HCD offers three choices:
- Basic HiperSockets
- The IQD channel path is connected to the internal HiperSockets network and is used without connection to the IEDN or an external network. This is the default.
- IEDN Access (IQDX)
- The IQD channel path supports IEDN via the Internal Queued Direct I/O Extensions (IQDX) function.
- External Bridge
- The IQD channel path works in basic HiperSockets mode and can be transparently bridged to an external (customer managed) network via the z/VM Virtual Switch bridge support.
Figure 1. Edit IQD Channel Parameters