Home arrow Wiki arrow How to resolve "Neighbour table overflow" problem?
Main Menu
Home
Help Docs
Newbies
Corporates
Gnu/Linux Distros
Programming
Databases
Links
Search
Regular
News
Interviews
Aaj Ka Tip
Aaj Ka Command
Community
Blogs
Wiki
Forums
Services
Free Software

How to resolve "Neighbour table overflow" problem? Print E-mail

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.

echo 256 > /proc/sys/net/ipv4/neigh/default/gc_thresh1

echo 512 > /proc/sys/net/ipv4/neigh/default/gc_thresh2

echo 1024 > /proc/sys/net/ipv4/neigh/default/gc_thresh3

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

< Previous   Next >



gnulinuxclub
Join Us
About Us
Contact Us
Support Us
Acknowlegdement
Login(only for dev.)

Royalty Free Images

O'Reilly User Group discount!




Powered By GIMP GIMP
Contact Webmaster Copyleft 2011 gnulinuxclub.org