Thomas Dukes wrote:
*From:* centos-bounces@xxxxxxxxxx [mailto:centos-bounces@xxxxxxxxxx]
*On Behalf Of *chloe K
*Sent:* Thursday, November 27, 2008 9:10 PM
*To:* CentOS mailing list
*Subject:* Re: Neighbour table overflow
what is your netmask?
eth0 = 255.255.240.0
That is 4096 addresses (256*16).
eth1 = 255.255.255.0
lo = 255.0.0.0
lo is correct. The 'whole' net127. Of which 4 addresses have ever been
used (that I have encountered)....
These don't look right except for eth1. I have made no changes to
these in about 4 years.
Thanks
*/Thomas Dukes <tdukes@xxxxxxxxx>/* wrote:
Just started getting this. I tried the following by adding it to my
etc/sysctl.conf:
net.ipv4.neigh.default.gc_thresh1 = 4096
net.ipv4.neigh.default.gc_thresh2 = 8192
net.ipv4.neigh.default.gc_thresh3 = 8192
net.ipv4.neigh.default.base_reachable_time = 86400
net.ipv4.neigh.default.gc_stale_time = 86400
That pretty much locked things up.
Then I tried another googled solution:
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
And adding it also to etc/sysctl.conf:
net.ipv4.neigh.default.gc_thresh1 = 256
net.ipv4.neigh.default.gc_thresh2 = 512
net.ipv4.neigh.default.gc_thresh3 = 1024
Still not working.
Any ideas?
TIA
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