Neighbour table overflow
از ویکی پارس پویش
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
