HP Auto Port Aggregation (APA) Release Notes (5900-2483, September 2012)

3 HP APA Overview for HP-UX 11i v3
This chapter provides information about the HP-UX 11i v3 (B.11.31.71) September 2012 release
of HP Auto Port Aggregation (APA) and LAN Monitor software.
Auto Port Aggregation
HP APA is a software product that creates link aggregates, often called "trunks," which provide a
logical grouping of two or more physical ports into a single "Fat-Pipe." Network traffic is load
balanced across all of the links in the aggregation, which allows you to build large bandwidth
logical links into the server that are highly available and completely transparent to the client and
server applications.
In addition, HP APA provides automatic link failure detection and recovery, and optional support
for load balancing of network traffic across all of the links in the aggregation.
HP APA supports HP Serviceguard.
For more information, see the HP Auto Port Aggregation (APA) Administrator's Guide. To locate
this document, go to the www.hp.com/go/hpux-networking-docs product page. On this page,
select HP-UX Auto Port Aggregation (APA) Software.
Failover Group
HP APA supports the creation of failover groups (link aggregates in LAN_MONITOR mode),
providing a failover capability for links. In the event of a link failure, LAN Monitor automatically
migrates traffic to an available, standby link (port or link aggregate) in the failover group.
New Features in This Release
The B.11.31.71 version of HP APA:
• APA over DIO interfaces support.
DIO directly exposes the NIC to the guest. Support for aggregating DIO interfaces in HPVM
guest is qualified in this revision of APA. LACP Aggregation and Lan monitor mode have been
qualified for 10Gb drivers (iexgbe and iocxgbe). For how to create a DIO pool and assign
the DIO interface to HPVM guest refer DIO Admin guide.
For more information on the new features and how to use them, see the HP Auto Port Aggregation
(APA) Administrator's Guide for HP-UX 11i v3. To locate this document, go to the www.hp.com/
go/hpux-networking-docs product page. On this page, select HP-UX Auto Port Aggregation (APA)
Software.
Known Problems Fixed in This Version
Table 1 lists the known problems fixed in this release of HP APA B.11.31.71.
Table 4 Fixes in the HP APA B.11.31.71 Release
DescriptionDefect ID
Guest panic loop with 1.5G memory and 16 DIO functions.QXCR1001160530
HPVM guest connected via vswitch APA/LM connectivity pbms after LM failover.QXCR1001198122
Known Problems and Limitations
This section provides a list of known problems and limitations as known to HP at the time of
publication. If workarounds are available, they are included.
Defect ID: QXCR1001187596
14 HP APA Overview for HP-UX 11i v3