"Virtual optical storage using the Network File System."

I am trying "Virtual optical storage using the Network File System." as
documented here:
http://pic.dhe.ibm.com/infocenter/iseries/v7r1m0/topic/rzam4/rzam4virtualopstoragenfs.htm

On my 'host' I ran

VFYIMGCLG IMGCLG(CUME) TYPE(*PTF) SORT(*YES) NFSSHR(*YES)

Image catalog CUME, type *PTF verified.

CHGNFSEXP OPTIONS('-i -o ro') DIR('/fixes/cume')

Export request completed successfully.
1 entries exported, 0 entries not exported.

CHGTFTPA ALTSRCDIR('/fixes/cume/BOOTP')

Process completed successfully.

md ('/fixes/cume/BOOTP')

Directory created.

cHGAUT OBJ('/fixes/cume') USER(*PUBLIC) DTAAUT(*RX) SUBTREE(*ALL)

11 objects successfully changed.

endtcpsvr *tftp

TFTP server ended.

strtcpsvr *tftp

TFTP server starting.

On my 'client' I ran:

CRTDEVOPT DEVD(optfixes) RSRCNAME(*VRT) LCLINTNETA(*SRVLAN)

RMTINTNETA('10.10.1.194') NETIMGDIR('/fixes/cume')
Ownership of object OPTFIXES in QSYS type *DEVD changed.
Description for device OPTFIXES created.

wrkcfgsts *dev opt*

Vary on completed for device OPTFIXES.

INSPTF LICPGM((*ALL)) DEV(OPTFIXES) INSTYP(*DLYALL)

Media or device error occurred. OPT1605, RC 01
Function check. OPT1605 unmonitored by QPZINSFX at statement *N,
instruction X'04F3'.
PTF install processing failed.

Nothing in the Product Activity Log.
Nothing in the Service Action log.
For either the host or client.

Rob Berendt