problem on sharing cdrom drive in AIX with linux

HI

i have setuped a nfs between a AIX system and a linux os ,keeping AIX as sever
i need to share the CDrom in AIX server with the linux operating system. ie. linux os
machine does't have a cdrom . will i be able be share ..i tried a lot but it gives a message which resembles NFS access denied while mounting.

thanks in advance