HP Auto Port Aggregation (APA) Release Notes HP-UX 11i v1, 11i v2, and 11i v3 (5900-1601, March 2011)

2 HP APA Overview for HP-UX 11i v2
This chapter provides information about the HP-UX 11i v2 (B.11.23.40) December 2007 release
of HP Auto Port Aggregation (APA) and LAN Monitor software.
This release of HP APA now supports HP Serviceguard version A.11.17 or later. HP Serviceguard
can use both link aggregates and failover groups (LAN_MONITOR mode). In addition, this release
also supports Nortel Split Multi-Link Trunking (SMLT) technology and improved HP Integrity virtual
machine support.
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 Serviceguard. See the HP Auto Port Aggregation (APA) Administrator's Guide
for more information.
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.11.23.40 version of HP APA:
• Supports using the load distribution algorithm specified in the HP APA raw mode packet within
HP Integrity virtual machines. This requires that you install the HPVM PHSS_36737 patch.
Previous releases of HP APA were restricted to the LB_MAC distribution algorithm.
See the HP Auto Port Aggregation (APA) Administrator's Guide (HP Part Number J4240-90046)
for more information on the new features and how to use them.
Known Problems Fixed in This Version
Table 2.1 lists the known problems and fixes in this release of HP APA B.11.23.40.
Table 2 Fixes in the HP APA B.11.23.40 Release
DescriptionDefect ID
System panics after starting PAgP on a port that was added to a system using online
addition.
CR: JAGag03238
SR: 8606445801
PAgP ports in link aggregates join different aggregates after they are reset or the CKO
setting changes.
CR: JAGag06609
SR: 8606449449
Under some conditions, you cannot configure an IP address after LACP negotiation
fails on a port.
CR: JAGag46484
SR: 8606494551
Auto Port Aggregation 11