Mounting AIX 6.1 share on Redhat 6.5 Client

I am able to mount the AIX NFS share but I am not able to wite in mounted directory.
Exported directory amd mount mount are both 777. After I mount filesystem the permission are: dr-xr-xr-x and owned by root nobody.

SEE BELOW:

[root@vm-cwwfmspb1 /]# ls -ld /mnt
drwxrwxrwx. 2 root root 4096 Aug 8 10:47 /mnt
[root@vm-cwwfmspb1 /]# mount -v -t nfs4 -o rw cwwfmsnfs04:/pbdx /mnt
mount.nfs4: timeout set for Tue Oct 28 07:58:37 2014
mount.nfs4: trying text-based options 'addr=10.32.195.98,clientaddr=10.32.201.229'
cwwfmsnfs04:/pbdx on /mnt type nfs4 (rw)
[root@vm-cwwfmspb1 /]# ls -ld /mnt
dr-xr-xr-x. 1 root nobody 2 Oct 27 13:42 /mnt
[root@vm-cwwfmspb1 /]# cd /mnt
[root@vm-cwwfmspb1 mnt]# touch foobar
touch: cannot touch `foobar': Permission denied