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

Problem: Inconsistent behavior while deleting aggregation onVM guest for DIO interface
While deleting a DIO LACP aggregation in HPVM Guest for "iexgbe" driver a
delay may be observed in deleting an aggregation.
There is no loss of traffic, except some delay. This delay mostly attributes to two
factors
1. Low number of vCPUs
2. lan reset taking time
This issue is not very prominent if the number of interfaces in the aggregation
is lower than the number of vCPUs.
Defect ID: QXCR1001197219
Problem: When heavy UDP traffic is run over APA DIO interfaces and if network cable pull
out is performed, the UDP traffic tries to escape to other available interfaces.
As the traffic is heavy this would take the system to hang state. This behavior is
not seen with TCP traffic.
Known Problems with Switches
• HP ProCurve Switches
When disabling Cisco's Fast Ether Channel protocol on the HP 9000 server, the HP ProCurve
switches block that particular port from further use.
Severity: Medium
Corrective Action: To use the network physical port on the HP 9000 server, physically move
the connection from the server to the switch to another non-Cisco Fast EtherChannel port on
the switch.
• Cisco Catalyst 5000 Switches
◦ Turning off Cisco's Fast Ether Channel protocol on one network physical port on the HP
9000 server might cause the entire link aggregate (the port it is associated with) to be
deconfigured.
Severity: High
Corrective Action: Reconfigure the switch; do not include the port in the link aggregate
being configured. See the appropriate switch documentation for information on how to
reconfigure link aggregates.
The Catalyst 5000 switch allows only two- or four-port link aggregates. See the Cisco
Catalyst 5000 Configuration Guide for information about these limitations.
• 3Com SuperStack II Switches
To interoperate with the switch, disable the Trunk Control Message Protocol (TCMP) on all of
the ports that are being used with HP Integrity servers.
Compatibility and Installation Requirements
This section describes the compatibility information and installation requirements for this release.
For specific installation instructions, 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.
Operating System and Version Compatibility
This release is specific for HP-UX 11i v3 (B.11.31.71).
Compatibility and Installation Requirements 15