Neighbour table overflow

How to resolve "Neighbour table overflow" problem?

Gnu/Linux servers (when used extensively as a server) throw the following messages in log file

 kernel: Neighbour table overflow.
 kernel: printk: 100 messages suppressed.
 kernel: Neighbour table overflow.
 kernel: printk: 151 messages suppressed.
 kernel: Neighbour table overflow.

The solution to the problem is to increase the threshold level for the network devices

To check the present threshold level 1

cat /proc/sys/net/ipv4/neigh/default/gc_thresh1

It will give some value as 128 or 256 or 512.

This can be increased to the next level.Like if the value is 128 then

make the thresh1 value as 256 and thresh2 as 512 and thresh3 as 1024:

#nano /etc/sysctl.conf


net.ipv4.neigh.default.gc_thresh1 = 1024
net.ipv4.neigh.default.gc_thresh2 = 2048
net.ipv4.neigh.default.gc_thresh3 = 4096

#sysctl -p

This will stop the Error messages that were recieved in the log file