HP Auto Port Aggregation (APA) Release Notes for HP-UX 11i v1 and v2 September 2006
Table 2-1 Fixes in the HP APA B.11.23.20 Release (continued)
DescriptionDefect ID
When a link aggregate serving as the active port of a failover group changes its MAC address,
an unnecessary failover occurs. This causes a momentary traffic loss.
CR: JAGaf38054
SR: 8606377796
The lan*conf commands might log unneeded information to NetTL.
CR: JAGaf98280
SR: 8606440399
The lanqueryconf command might pick failover group Physical Points of Attachment (PPAs)
on which an IP address is still configured, causing lancheckconf and lanapplyconf to
fail.
CR: JAGaf98170
SR: 8606440277
The lanqueryconf command might put ports having VLANs configured on them into failover
groups. If lanapplyconf detects these ports in a failover group, the command fails.
CR: JAGaf98173
SR: 8606440280
When creating a link aggregate, APA indicates TCP Segmentation Offload (TSO) is supported
on the link aggregate even though all member links do not support TSO.
CR: JAGaf22867
SR: 8606362186
The lanapplyconf command cannot create failover groups whose member ports have a
Maximum Transmission Unit (MTU) of 259 or less.
CR: JAGaf98057
SR: 8606440152
The descriptions for the default admin key value and default port mode are incorrect in the
/etc/rc.config.d/hp_apaportconf configuration file.
CR: JAGag01992
SR: 8606444432
After adding a down port to an unused link aggregate, lanadmin –g shows Other in the
link aggregate's Type field. However, the down port being added is ethernet-csmacd(1).
CR: JAGag00338
SR: 8606442593
Known Problems and Limitations
This section describes the known problems and limitations as known to HP at time of publication. If
workarounds are available, they are included.
Known Problems with Switches
• 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.
Known Problems with Failover Groups
If you create a failover group with a link aggregate as the primary port, after lanapplyconf successfully
creates the failover group, lanscan –q shows the primary port as DOWN. This only occurs when a new
failover group is created over a cleared failover group that already has VLANs with IP addresses configured.
NOTE: This problem does not occur when the primary port in a failover group is a physical link.
Corrective Action: To prevent this problem, unplumb all IP addresses on the VLANs created over failover
groups before the failover group is cleared with landeleteconf. In the following example, the failover
group lan902 has link aggregate lan900 as the primary port and lan901 as the standby port. VLANs
lan5000 and lan5001 have lan902 as their interface, with lan5000 configured with an IPv4 address
and lan5001 configured with an IPv6 address. The following steps show how to clear the failover group
and create a new one:
1. Unplumb the VLAN interfaces. Enter:
# ifconfig lan5000 unplumb
# ifconfig lan5001 inet6 unplumb
2. Clear the failover group. Enter:
# landeleteconf –g lan902
3. Create failover group lan902. Enter:
12 HP APA Overview for HP-UX 11i v2