mount: RPC: Program not registered

[Ritesh Agrawal]

Hi Group,

Recently i deployed one NFS server(S1) with three clients(C1,C2,C3),
two client nodes successfully mount NFS server(S1) share into local
directory , but problem with client3 , when i tried to mount NFS
Server(S1) share  directory in to local directory , it showed the
error message 'mount: RPC: Program not registered'.

# mount -o rsize=8192,wsize=8192 S1:/remote /local
mount: RPC: Program not registered

To minimize the complexity i add following line in /etc/hosts.allow in
NFS server(S1)

portmap:ALL


RHEL ver 3.0 installed on all machines.

Services running on  machines
c1,c2,c3: portmap,rpc.mountd
s1: portmap,nfsd,rpc.rquotad,rpc.statd,rpc.mountd

C1# rpcinfo -p  S1
     program vers proto   port
     100000    2   tcp    111  portmapper
     100000    2   udp    111  portmapper
     100024    1   udp  59403  status
     100024    1   tcp  36772  status
     100021    1   udp  60364  nlockmgr
     100021    3   udp  60364  nlockmgr
     100021    4   udp  60364  nlockmgr
     100021    1   tcp  42935  nlockmgr
     100021    3   tcp  42935  nlockmgr
     100021    4   tcp  42935  nlockmgr

C3# rpcinfo -p S1
     program vers proto   port
     100000    2   tcp    111  portmapper
     100000    2   udp    111  portmapper
     100024    1   udp  59403  status
     100024    1   tcp  36772  status
     100021    1   udp  60364  nlockmgr
     100021    3   udp  60364  nlockmgr
     100021    4   udp  60364  nlockmgr
     100021    1   tcp  42935  nlockmgr
     100021    3   tcp  42935  nlockmgr
     100021    4   tcp  42935  nlockmgr

S1# rpcinfo -p
program vers proto   port
     100000    2   tcp    111  portmapper
     100000    2   udp    111  portmapper
     100021    1   udp  32774  nlockmgr
     100021    3   udp  32774  nlockmgr
     100021    4   udp  32774  nlockmgr
     100021    1   tcp  34121  nlockmgr
     100021    3   tcp  34121  nlockmgr
     100021    4   tcp  34121  nlockmgr
     100024    1   udp  32852  status
     100024    1   tcp  59544  status
     100011    1   udp    933  rquotad
     100011    2   udp    933  rquotad
     100011    1   tcp    936  rquotad
     100011    2   tcp    936  rquotad
     100003    2   udp   2049  nfs
     100003    3   udp   2049  nfs
     100003    2   tcp   2049  nfs
     100003    3   tcp   2049  nfs
     100005    1   udp    960  mountd
     100005    1   tcp    963  mountd
     100005    2   udp    960  mountd
     100005    2   tcp    963  mountd
     100005    3   udp    960  mountd
     100005    3   tcp    963  mountd
----------------------------------------------------------
any more information you need ??
need urgent help, thanks in advance.
-- 

Ritesh Agrawal