Hi, I have Redhat linux 7.2 and NFS V3 working on it. it puts too much load on network which slows down all network operations. Also I am running NFS on Solaris 7. I just want to know the who is cause the problem. both side NFS working on UDP. a.. the version of nfs-utils Iam are using (nfs-utils-0.3.1-13.7.2.1) b.. the version of the kernel and any non-stock applied kernels. is (2.4.7-10) c.. the distribution of linux you are using (REDHAT ) d.. the version(s) of other operating systems involved. ( Linux 7.2) It is also useful to know the networking configuration connecting the hosts ( cat 5 with 10/100 switch network). Linux NFS server. a.. the output of rpcinfo -p localhost run on the server out put is program vers proto port 100000 2 tcp 111 portmapper 100000 2 udp 111 portmapper 100024 1 udp 32768 status 100024 1 tcp 32768 status 100004 2 udp 624 ypserv 100004 1 udp 624 ypserv 100004 2 tcp 627 ypserv 100004 1 tcp 627 ypserv 100007 2 udp 644 ypbind 100007 1 udp 644 ypbind 100007 2 tcp 647 ypbind 100007 1 tcp 647 ypbind 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100021 1 udp 32771 nlockmgr 100021 3 udp 32771 nlockmgr 100021 4 udp 32771 nlockmgr 100009 1 udp 830 yppasswdd 100011 1 udp 685 rquotad 100011 2 udp 685 rquotad 100011 1 tcp 688 rquotad 100011 2 tcp 688 rquotad 100005 1 udp 32774 mountd 100005 1 tcp 32770 mountd 100005 2 udp 32774 mountd 100005 2 tcp 32770 mountd 100005 3 udp 32774 mountd 100005 3 tcp 32770 mountd for Solaris is a.. the output of rpcinfo -p localhost out put is program vers proto port 100000 4 tcp 111 portmapper 100000 3 tcp 111 portmapper 100000 2 tcp 111 portmapper 100000 4 udp 111 portmapper 100000 3 udp 111 portmapper 100000 2 udp 111 portmapper 100004 2 udp 728 ypserv 100004 1 udp 728 ypserv 100004 1 tcp 729 ypserv 100004 2 tcp 32771 ypserv 1073741824 2 udp 32772 100007 3 udp 32778 ypbind 100007 2 udp 32778 ypbind 100007 1 udp 32778 ypbind 100007 3 tcp 32772 ypbind 100007 2 tcp 32772 ypbind 100007 1 tcp 32772 ypbind 100024 1 udp 32783 status 100024 1 tcp 32773 status 100133 1 udp 32783 100133 1 tcp 32773 100021 1 udp 4045 nlockmgr 100021 2 udp 4045 nlockmgr 100021 3 udp 4045 nlockmgr 100021 4 udp 4045 nlockmgr 100232 10 udp 32785 sadmind 100011 1 udp 32786 rquotad 100002 2 udp 32787 rusersd 100002 3 udp 32787 rusersd 100002 2 tcp 32774 rusersd 100002 3 tcp 32774 rusersd 100012 1 udp 32788 sprayd 100008 1 udp 32789 walld 100001 2 udp 32790 rstatd 100001 3 udp 32790 rstatd 100001 4 udp 32790 rstatd 100083 1 tcp 32775 100221 1 tcp 32776 100235 1 tcp 32777 100068 2 udp 32791 100068 3 udp 32791 100068 4 udp 32791 100068 5 udp 32791 300326 4 tcp 32778 100021 1 tcp 4045 nlockmgr 100021 2 tcp 4045 nlockmgr 100021 3 tcp 4045 nlockmgr 100021 4 tcp 4045 nlockmgr 100005 1 udp 32803 mountd 100005 2 udp 32803 mountd 100005 3 udp 32803 mountd 100005 1 tcp 32779 mountd 100005 2 tcp 32779 mountd 100005 3 tcp 32779 mountd 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100227 2 udp 2049 nfs_acl 100227 3 udp 2049 nfs_acl 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs 100227 2 tcp 2049 nfs_acl 100227 3 tcp 2049 nfs_acl 300598 1 udp 32805 300598 1 tcp 32781 805306368 1 udp 32805 805306368 1 tcp 32781 100249 1 udp 32807 100249 1 tcp 32782 1289637087 4 tcp 32859 1289637087 1 tcp 32859 1289637087 3 tcp 32859 1289637087 2 tcp 32859 1289637086 4 tcp 35213 1289637086 1 tcp 35213 1289637086 3 tcp 35213 1289637086 2 tcp 35213 Help on this will be greatful Thanks Yukthi