rkk2025
Occasional Visitor
Hi,
Lately my LAN seems to be collapsing every now and then. It usually ends with leaving me without internet for some minutes, or even makes it impossible to connect to the router itself (To the webpanel). The log gets usually spammed with "kernel: TCP: time wait bucket table overflow" during this time, which makes me believe it must be related to this.
Here is a longer Log extract, in case it would be any helpful:
Form what I understand this is due to too many simultaneous open or half open connections from the clients. But this also happened to me when only one or two clients were connected. Sometimes even only my mobile phone.
I did a netstat from the phone and I could observe that there are hundreds of half open connection made trough the Google Play services and Google Chrome. But would that be enough to collapse the whole network?
Today I had again the same LAN collapsing experience while I was using my computer. This time I did a netstat from the router and saw many connections coming from my computer:
And this is only the tcp part. The UDP part has around the same amount of open connections.
I left TCPView run on my Windows machine, revealing again that many of these connections come from Google Chrome. And it seems it is creating them and destroying them constantly, which makes me believe that the router may not be notified of the removal and keeps the list growing (But that's my wild guess here).
Anybody has an idea of what could be going on here?
EDIT: This is what is being shown in Sysinfo on the router. So there are still many free connections..
Connections 4752 / 300000 - 100 active
Lately my LAN seems to be collapsing every now and then. It usually ends with leaving me without internet for some minutes, or even makes it impossible to connect to the router itself (To the webpanel). The log gets usually spammed with "kernel: TCP: time wait bucket table overflow" during this time, which makes me believe it must be related to this.
Here is a longer Log extract, in case it would be any helpful:
...
Apr 23 14:09:00 kernel: net_ratelimit: 39 callbacks suppressed
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: net_ratelimit: 282 callbacks suppressed
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: net_ratelimit: 215 callbacks suppressed
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: net_ratelimit: 289 callbacks suppressed
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:41 kernel: net_ratelimit: 182 callbacks suppressed
Apr 23 14:09:41 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:41 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:41 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:46 kernel: net_ratelimit: 298 callbacks suppressed
Apr 23 14:09:46 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:47 kernel: TCP: time wait bucket table overflow
...
Apr 23 14:09:00 kernel: net_ratelimit: 39 callbacks suppressed
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:00 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: net_ratelimit: 282 callbacks suppressed
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:16 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: net_ratelimit: 215 callbacks suppressed
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:26 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: net_ratelimit: 289 callbacks suppressed
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:31 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:41 kernel: net_ratelimit: 182 callbacks suppressed
Apr 23 14:09:41 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:41 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:41 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:42 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:46 kernel: net_ratelimit: 298 callbacks suppressed
Apr 23 14:09:46 kernel: TCP: time wait bucket table overflow
Apr 23 14:09:47 kernel: TCP: time wait bucket table overflow
...
Form what I understand this is due to too many simultaneous open or half open connections from the clients. But this also happened to me when only one or two clients were connected. Sometimes even only my mobile phone.
I did a netstat from the phone and I could observe that there are hundreds of half open connection made trough the Google Play services and Google Chrome. But would that be enough to collapse the whole network?
Today I had again the same LAN collapsing experience while I was using my computer. This time I did a netstat from the router and saw many connections coming from my computer:
tcp 0 0 192.168.2.1:35505 192.168.2.100:28619 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30751 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29875 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26929 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28198 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26194 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26099 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31631 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29916 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31851 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31507 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30639 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28875 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27916 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31589 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28240 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26183 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31525 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26079 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27845 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29050 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27237 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27193 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27999 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31566 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30048 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31750 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28752 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29924 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30202 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31492 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28779 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30798 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30223 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30099 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27735 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27140 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28238 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31092 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29097 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:25930 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28672 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26205 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26095 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26816 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26808 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27051 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29910 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28136 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31481 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28972 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28788 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30766 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31029 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28158 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27261 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29075 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31472 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27315 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30751 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29875 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26929 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28198 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26194 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26099 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31631 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29916 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31851 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31507 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30639 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28875 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27916 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31589 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28240 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26183 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31525 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26079 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27845 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29050 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27237 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27193 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27999 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31566 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30048 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31750 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28752 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29924 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30202 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31492 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28779 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30798 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30223 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30099 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27735 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27140 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28238 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31092 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29097 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:25930 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28672 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26205 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26095 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26816 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:26808 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27051 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29910 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28136 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31481 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28972 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28788 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:30766 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31029 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:28158 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27261 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:29075 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:31472 TIME_WAIT
tcp 0 0 192.168.2.1:35505 192.168.2.100:27315 TIME_WAIT
And this is only the tcp part. The UDP part has around the same amount of open connections.
I left TCPView run on my Windows machine, revealing again that many of these connections come from Google Chrome. And it seems it is creating them and destroying them constantly, which makes me believe that the router may not be notified of the removal and keeps the list growing (But that's my wild guess here).
Anybody has an idea of what could be going on here?
EDIT: This is what is being shown in Sysinfo on the router. So there are still many free connections..
Connections 4752 / 300000 - 100 active
Last edited: