I've got a linux router pushing 600-1000 pppoe connections through it.
I'm getting a screen error "Neighbor Table Overflow" after this box has
been up for between 1 week and 1 month. When this is happening, routing
slows to a crawl if at all. Then dies. I've added:
# Added to stop "neighbor table overflow" messages in the kernel
net.ipv4.neigh.default.gc_thresh1=512
net.ipv4.neigh.default.gc_thresh2=2048
net.ipv4.neigh.default.gc_thresh3=4096
# Added to increase IP contrack number (was getting to max)
net.ipv4.ip_conntrack_max=99999
to sysctl.conf to increase the size, but this only seems to delay the
problem.
Any thoughts?
Marco
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