Mounting from other server

Hi Guys,
I have some problem when i want to mount a directory from another server, this is the detail information:
Server : 192.168.2.83.
-> cat /etc/exports  = /simprela1 192.168.10.129/255.255.255.0(rw,no_root_squash,no_subtree_check)

Client : 192.168.10.129
-> df -kh
    Filesystem               Size   Used    Avail    Use%     Mounted on
    /dev/cciss/c0d0p3     9.7G   583M   8.6G    7%         /
    /dev/cciss/c0d0p5     97M    13M     80M    14%       /boot
    /dev/cciss/c0d0p1     50M    5.1M    45M    11%       /boot/efi
    /dev/sda1                 447G   135G   290G   32%       /data
    /dev/sda7                 448G   46G     379G   11%       /data1
    /dev/sda2                 20G     33M    19G     1%         /home
    none                        5.9G    0         5.9G    0%        /dev/shm
    /dev/sda6                 9.7G    121M   9.1G    2%        /tmp
    /dev/cciss/c0d0p4     13G     2.2G    9.4G   19%       /u01