NFS Service Error(Starting NFS quotas: Cannot register service:..)

[root@sankar-test ~]# service nfs status
rpc.mountd is stopped
nfsd is stopped
rpc.rquotad is stopped

[root@sankar-test ~]# service nfs start
Starting NFS services:  [  OK  ]
Starting NFS quotas: Cannot register service: RPC: Unable to receive; errno = Connection refused
rpc.rquotad: unable to register (RQUOTAPROG, RQUOTAVERS, udp).
[FAILED]
Starting NFS daemon:

[1]+  Stopped                 service nfs start

[root@sankar-test ~]# service rpcbind status
rpcbind: unrecognized service

[root@sankar-test ~]# service portmap status
portmap is stopped

[root@sankar-test~]# service portmap start
Starting portmap: [  OK  ]

[root@sankar-test ~]# service nfs start
Starting NFS services:  [  OK  ]
Starting NFS quotas: [  OK  ]
Starting NFS daemon: [  OK  ]
Starting NFS mountd: [  OK  ]
Starting RPC idmapd: [  OK  ]
[root@sankar-test ~]#