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Forum Discussion
what is orbi's tcp session timeout value?
does anybody know orbi's tcp session timeout value? my guesstimate puts it somewhere around 5 or 10 minutes.
32 Replies
tcp timeout is usually measured in hours, udp is in the range of 2 minutes.
I found this in the Orbi settings:
net.netfilter.nf_conntrack_tcp_timeout_established=7440
Which means tcp timeout is around 2 hours.
ive got att uverse internet dsl. i suspect the pace modem does a nat'd dmz mode. it's set for 86400 seconds. i suspect with the two being different is clogging up (dont know the offical term) the pace modem. something like devices connected to the orbi is generating more sessions than the pace modem can handle; which appears to be 8112 sessions. its easier for me to change value in the pace modem to match orbi. incidentally, ive had the pace modem set for 1800 seconds for the last five days or so and no internet service disruptions since. meaning no complaints from wife and kid for five days....ive made the internet great again.
can you dig up the value for udp? might as well set them to matching values.
at 7440 seconds on the isp gateway, tcp sessions doubled to just under 2000 sessions. orbi/debug reports around 600 sessions. i think they should be reporting similar number of sessions. as it times out the orbi, the isp gateway should be timing out shortly after. att uverse pace gateway appears to support 8112 sessions. while the orbi appears to support 65536...ive since changed it 3600 seconds. the number of sessions on the isp gateway continues to drop as time passes, although it is still higher than that reported on the orbi.
- Ugh. Is there a character limit on posts? I struggled so much to reach word count on essays back in school. It would be nice if it notified you when going over the limit.
Phone typing version....long version after I’m home from work.
1. Upload speed matters. 5Mbps better than 1.5Mbps. They don’t offer faster upload speed where I live. Frequency of lost internet vastly improved.
2. Openwrt router with fresh release and orbi ap is pretty good. Any other device as router is probably going to be good.
I experimented with Linux back in college about 20 years ago. Openwrt experience is limited to some light reading of wiki and a stay at holiday inn express.
Nothing useful in logs explaining lost internet. Buffer bloat?Possibly something with your ISP modem maybe.
Do you have problems with this modem and a different router?
Some info on Buffer Bloat. Mostly for gaming:
https://community.netgear.com/t5/Nighthawk-Pro-Gaming-Routers/What-Is-Anti-buffer-Bloat/td-p/1669266
Shotround wrote:
Ugh. Is there a character limit on posts? I struggled so much to reach word count on essays back in school. It would be nice if it notified you when going over the limit.
Phone typing version....long version after I’m home from work.
1. Upload speed matters. 5Mbps better than 1.5Mbps. They don’t offer faster upload speed where I live. Frequency of lost internet vastly improved.
2. Openwrt router with fresh release and orbi ap is pretty good. Any other device as router is probably going to be good.
I experimented with Linux back in college about 20 years ago. Openwrt experience is limited to some light reading of wiki and a stay at holiday inn express.
Nothing useful in logs explaining lost internet. Buffer bloat?- Let me rephrase point 2.
Pace 5031 nv - dmzplus setting - Linksys wrt1900ac - orbi ap mode - no complaints from family
Pace appears to be arris now.
Linksys has latest openwrt by my preferred source.
I’ll post other observations when I’m on computer. Perhaps netgear implementation to deal with buffer bloat. The base code openwrt used by orbi is quite dated. I wonder how much that contributed to issues observed.
