To find out the process id attached to a port in AIX ( If you do not have a compatible lsof )   

echo "Enter port: \c"
read PORT
for HEX in `netstat -Aa |grep -v grep|grep "$PORT"|awk '{print $1}'`
do
echo "sockinfo $HEX tcpcb" | kdb |grep proc |grep ACTIVE |awk '{printf "\nProcess ID: %d\n", "0x"$4}'
done

 To unmount a hard NFS mount when the NFS server is not available if on the same subnet

To unmount testhost01:/test/nfsmount

 Find out the local interface on the subnet , i.e. en3

 ifconfig en3 alias testhost01 up

exportfs –i /test/nfsmount

 Try unmount command now, it will time out this time.

 Tips on Bladecentre – H

 Fibre Switch Placement

 Customers who planned redundancy for Fibre channel path to storage should install the second Fibre switch on Bay10 instead of Bay4. This way, one port from the onboard and daughter card goes to the switches. If the fibre switches were on Bay3 & 4 , two ports from onboard fibrechannel would get connected to switches i.e. the daughter card’s fibre HBA ports will be unused.

 Serial Over LAN – JS22 Blades

 Configuring SOL ( aka Serial Over LAN ) involves allowing VLAN 1-4094 on the Bay – 1 Ethernet switch. Once done, you may login to the Blade centre Management module via a telnet / ssh client. To attach to a blade’s console, use the following method,

 Console -t blade[5]   # To get blade 5 ‘s console.

 To exit the session use the following key combinations

 ESC + (

 Etherchannels on JS22 Blades.

 Customers who plan to use etherchannel for redundancy must be aware of the following facts.

• JS22 blades come with one dual port onboard HEA adapters.
• The daughter card comes with a regular dual port interface.

 Etherchannel do not support using one port each from HEA & daughter cards. For etherchannel (both active-active and active-passive) all the participant interfaces should be of the same type.