On Thu, Jan 08, 2015 at 11:38:46PM +0800, zhen wang wrote:
> Hi, all
>
> When use Centos 6.5,kernel version 2.6.431, I have continuous messages of
> "Neighbour table overflow" in messages.
> I have modified the gc_thresh1(512) , gc_thresh2 (2048) gc_thresh3 (4096)
> in /proc/sys/net.. path, But the messages occurs occasionally.
We had 1,500 machines in our colo when I did this to stop those
complaints:
# increase the size of the neighbor tables to be more than the # of ips in the colo
net.ipv4.neigh.default.gc_thresh1 = 2048
net.ipv4.neigh.default.gc_thresh2 = 2304
net.ipv4.neigh.default.gc_thresh3 = 2560
-- greg
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