#11091: Router reboot on high download traffic.
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Reporter: cristian.sandu@… | Owner: hauke
Type: defect | Status: assigned
Priority: normal | Milestone: Barrier Breaker 14.07
Component: base system | Version: 10.03.1
Resolution: | Keywords:
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Comment (by Ext3h):
Same problem for me as well, a WR1043NDv1 with latest trunk. Random
crashes during high load on the wired interface.
It looks though as if there is a workaround:
{{{
# /etc/sysctl.conf
net.netfilter.nf_conntrack_max=4096
net.netfilter.nf_conntrack_tcp_timeout_established=600
net.netfilter.nf_conntrack_udp_timeout=30
net.netfilter.nf_conntrack_udp_timeout_stream=180
}}}
I'm clueless as to why this works, and it will cause connection drops with
P2P load, but so far it saved me from the reboots.
So far, I could only reliably trigger the reboots by having >=5k
connections tracked simultaneously, and for some unknown reason, there are
far more unique connections tracked than actually established, but only on
the wired interface. When using the wireless interface, the connections
don't spike like that.
Is there possibly any traffic already pre-filtered on the wireless
interface? Something which could otherwise trip the connection tracking?
And why does a growing contrack table cause a kernel panic in random
modules?
--
Ticket URL: <https://dev.openwrt.org/ticket/11091#comment:52>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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