I m try to edit file gc_thresh1,2,3 in /proc/sys/net/ipv4/neigh/default/gc_thresh1 but giving error ;file in use.
now i got success by edit # vi /etc/rc.local
echo 1024 > /proc/sys/net/ipv4/neigh/default/gc_thresh1
echo 4096 > /proc/sys/net/ipv4/neigh/default/gc_thresh2
echo 8192 > /proc/sys/net/ipv4/neigh/default/gc_thresh3
# ./rc.local