If this is connection count related only, It is most likely an issue with the CPE (router), NAT table, or similar.
On Tue, Nov 2, 2021 at 8:21 AM Neel Chauhan <n...@neelc.org> wrote: > I tried that back in September, it didn't work. It doesn't happen on my > hop but the one after that. Even a second GPON connection shows the > issues if one is running the offending traffic. > > The issue occurs even if I'm using 50 Mbps out of my 940. > > It may be bufferbloat on CL's side but they keep denying the issue. > > I guess I'll have to break the bank and get Comcast Gigabit Pro. > > CenturyLink should just get bought out by another telco, like how > Cablevision got bought by Altice. > > -Neel > > On 2021-11-01 20:52, Ryan Hamel wrote: > > Neel, > > > > Sounds like buffer bloat. > > > > Run a speed test, whatever is your maximum for your download and upload > > take > > 10% away from it, and setup traffic shaping in OPNsense > > (https://docs.opnsense.org/manual/shaping.html) with those values. If > > the > > issue goes away, then you're exceeding the buffer of CenturyLink's > > device > > with the bursts of traffic. > > > > Ryan > > > > -----Original Message----- > > From: NANOG <nanog-bounces+ryan=rkhtech....@nanog.org> On Behalf Of > > Neel > > Chauhan > > Sent: Monday, November 1, 2021 6:44 PM > > To: nanog@nanog.org > > Subject: CenturyLink Fiber Latency Issues (Seattle, WA) > > > > Hi NANOG Mailing List, > > > > I don't know if any of you work at CenturyLink/Lumen, very less on > > their > > Fiber network in Seattle, WA. However, here's my story. > > > > If I attempt to run certain applications that use 1000, or 10000 TCP > > connections, I get latency spikes. It is based on how many connections, > > but > > also how much bandwidth is used. This means certain things like Tor > > relays > > are off limits to me (which I wish to run). > > > > On an idle connection, the PingPlotter outputs look like this: > > https://centurylinklatencyissues.com/image-000.png > > > > If I attempt to run BitTorrent with 1000 connections in Deluge, > > PingPlotter > > looks like this: > > https://centurylinklatencyissues.com/image-002.png > > > > Getting support, or even executive contacts to admit the issue hasn't > > worked. They all love to blame my equipment or applications, when CL > > routers > > also show the issue when I run the same things whereas my same exact > > OPNsense box on Google Fiber Webpass running Tor at another address had > > no > > issues whatsoever, and I can ping other Tor relays on CenturyLink AS209 > > just > > fine (from a VPS). > > > > The most competent person I dealt with was actually one tech. He told > > me > > there was "capacity issues" in our neighborhood, and that's the reason > > for > > the issues. However, nothing was done about it afterwards, I'm guessing > > since I turned off my Tor relay after the visit to avoid complaints > > from > > family members. > > > > On an AT&T forum, people have said GPON gives latency spikes/packet > > loss on > > congestion: > > > https://www.dslreports.com/forum/r33242889-How-rare-is-GPON-XGSPON-saturatio > > n > > > > The capacity managers in Seattle are literally dragging their feet: > > it's > > 100x worse than AT&T's 802.1X. I know AT&T and CenturyLink don't > > compete, > > but if I had to choose between AT&T Fiber and CenturyLink, I'll take > > AT&T in > > a heartbeat, no ifs, no buts, even if I have to use AT&T's crappy > > router > > instead of my OPNsense box. > > > > Going back, do any of you who work at CenturyLink/Lumen can get me to > > the > > right people, hopefully the capacity managers in Seattle? > > > > I could go with Comcast, but it's either (a) 35 Mbps uploads or (b) > > $329/mo > > for "Gigabit Pro" with a 2-year contract and a steep install fee. I am > > seriously considering Gigabit Pro even if it breaks the bank, but hope > > I > > won't have to go there. > > > > I don't need 2 Gbps and would rather pay $65 than $329. 300-500 Mbps > > uploads > > when I need it is the sweet spot for me (even without Tor) which CL > > GPON > > should easily handle without a sweat. I also don't exactly > > **trust** Comcast, they're a horrible company in many metrics, but in > > some > > ways Comcast is more competent than CenturyLink. > > > > Best, > > > > Neel Chauhan >
