If the host WWN still cannot be discovered after the S5500 is directly connected to IBM minicomputer, the SFP module is replaced, or the host port is replaced, you can perform the following operations to discover the WWN on the host:
Step 1 Run the lsdev |grep fcs command to find the current FC switches fcs0 and fcs1.
Step 2 Run the rmdev -Rdl fcs0 and rmdev -Rdl fcs1 commands to remove FC switches fcs0 and fcs1.
Step 3 Run the cfgmgr -v command to rescan the device.
Step 4 Log in to the OSM again and add a host port. The host WWN is discovered.