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276 IBM z13s Technical Guide

7.3.53 VLAN management enhancements

Table 7-45 lists the minimum support requirements for VLAN management enhancements for

the OSA-Express5S and OSA-Express4S features (CHPID type OSD).

Table 7-45 Minimum support requirements for VLAN management enhancements

7.3.54 GARP VLAN Registration Protocol

All OSA-Express5S and OSA-Express4S features support VLAN prioritization, a component

of the IEEE 802.1 standard. GARP VLAN Registration Protocol (GVRP) support allows an

OSA-Express port to register or unregister its VLAN IDs with a GVRP-capable switch and

dynamically update its table as the VLANs change. This process simplifies the network

administration and management of VLANs because manually entering VLAN IDs at the

switch is no longer necessary.

The minimum support requirements are listed in Table 7-46.

Table 7-46 Minimum support requirements for GVRP

7.3.55 Inbound workload queuing for OSA-Express5S and OSA-Express4S

OSA-Express3 introduced inbound workload queuing (IWQ), which creates multiple input

queues and allows OSA to differentiate workloads “off the wire.” It then assigns work to a

specific input queue (per device) to z/OS. The support is also available with OSA-Express5S

and OSA-Express4S. CHPID types OSD and OSX are supported.

Each input queue is a unique type of workload, and has unique service and processing

requirements. The IWQ function allows z/OS to preassign the appropriate processing

resources for each input queue. This approach allows multiple concurrent z/OS processing

threads to process each unique input queue (workload), avoiding traditional resource

contention. In a heavily mixed workload environment, this “off the wire” network traffic

separation is provided by OSA-Express5S and OSA-Express4S. IWQ reduces the

conventional z/OS processing that is required to identify and separate unique workloads. This

advantage results in improved overall system performance and scalability.

Operating system Support requirements

z/OS z/OS V1R12.

z/VM z/VM V6R2. Support of guests is transparent to z/VM if the device

is directly connected to the guest (pass through).

Operating system Support requirements

z/OS z/OS V1R12

z/VM z/VM V6R2

Linux on z Systems

a. By using VLANs

SUSE Linux Enterprise Server 12

SUSE Linux Enterprise Server 11

Red Hat RHEL 7

Red Hat RHEL 6

IBM z13s User Manual

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