HP-UX Operating Systems - "error: duplex mismatch port"

ISSUE:
An error is seen when starting Auto Port Aggregation (APA):

/sbin/init.d/hpapa start
error: duplex mismatch port 1
SOLUTION:
1. The settings are checked for both of the Network Interface Cards (NICs). It is found that one was configured as full-duplex and the other as half-duplex, while the network switch ports were configured as full-duplex.
lanadmin -x 1
lanadmin -x 2

2. The LAN settings were changed for the NIC that mismatched the network switch port at the other end of the connection.
lanadmin -X 100FD 1

3. APA is started without errors.
/sbin/init.d/hpapa start

4. Network services is started.
/sbin/init.d/net start

It is verified that ssh(1) functioned correctly (the originally reported issue had to do with ssh functionality).