IPv6 support for guest LANs has been enhanced to allow the z/VM TCP/IP stack to be confi gured for IPv6 networks connected through OSA-Express operating in QDIO mode. The stack can be confi gured to provide static routing of IPv6 packets and to send IPv6 Router Advertisements. In addition, support is being provided to help application developers to develop socket appli- cations for IPv6 communications.

Systems Management Improvements

The Performance Toolkit for VM has been enhanced in z/VM V5.1 to provide functional equivalence to the Perfor- mance Reporting Facility (PRF) priced, optional feature, thereby virtually eliminating the need for separate products (PRF and RealTime Monitor (RTM)) to help manage your performance more effi ciently. Other new function includes:

New high-level Linux reports based on Application Moni- tor records from Linux

A new report for SCSI disks

Delivery of equivalent function to PRF in the Performance Toolkit for VM satisfi es the Statement of Direction made on May 13, 2003 to remove the RTM and PRF features in a future release of z/VM. The RTM and PRF features have been with- drawn from z/VM V5.1. These features are still available with z/VM V4.4 but cannot be licensed with z/VM V5.1.

For further information see the z/VM Reference Guide, GM13-0137.

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IBM z/OS manual Systems Management Improvements