Slow connection, high latency and jitter

[edxmas]

Hi team,

in the last 3 weeks the Internet connection is unreliable. I use it to watch TV, connect through my VPN for home office, generic web surfing, social networking. The feeling is a slow connection, VPN is just terribly slow and it times out (I frequently have to use my phone connectivity, using tethering, and with mobile Internet it works fine). TV (both on my smart tv, or using PrimeVideo on my laptop) starts buffering every 10 seconds. My modem is the basic CBN CH7466CE that Vodafone gives with a contract. My home setup has a eero router connected behind the CBN modem. I'm connected through the eero wifi network (keeping the CBN wifi off) - I tried to switch to the CBN network, but the problem is still there.

I can't paste the results of a speed test as speedcheck.vodafone.de doesn't work (it's stuck on "Wir messen aktuell, wie schnell Daten bei Dir ankommen"). Please, find attached the cloudflare speed test result. Router > Connection status is available at this link https://paste.ubuntu.com/p/c2km557926/

My contract is a Kabel 200

Modem is CBN CH7466CE (normally using a eero router behind it connected via LAN - but I tested with a direct connection to CBN)

I normally connect through wifi

I usually browse through Chrome, on osx

It started around 2 weeks ago

Thanks for your support

[Claudia]

Hello edxmas,

we already have your data from a former thread. The signal from your Upstreams are really low, the other devices in your building don't have problems with that. Please check a different coaxial cable as a first measure. Can you make speedtests at a different website? Please use a direct ethernet connection for that.

Kind regards,

Claudia

[edxmas]

Hi, thanks for the answer.

I made new tests. I was able to use vodafone speedcheck. I removed the eero bridge.

1. In the first run, I used a eth0 cable (ID: kn4vvxcqnhq2)

2. In the second run, I used the wlan connection (ID: dymyhmzrzn8b)

3. In the third run, I made a eth0 test again, but I used the main cable which comes in to the apartment (the setup in my cabin has a splitter) (ID: t5wyb2gtpmbf)

[pRo-Marco]

Hi edxmas,

Claudia did not mean the Ethernet-Cable. She means the Coaxial-Cable between socket and modem

Kind regards

Marco

[edxmas]

Hi Marco,

I wasn't clear in my previous message. That's exactly what I meant. I connected the router directly to the coaxial cable which comes into the apartment. Please find a schema attached. (Note: that's not a filter, just a splitter, this one exactly https://bit.ly/2ZrRVcw, I tried this config in the past and it was working fine)

[pRo-Marco]

Hi edxmas,

so there is no socket?

I would like to have a technician come out and take a look at it on site. If that's okay with you, I still need a cell phone number so we can set up an appointment.

Is the house installation accessible?

Due to the current developments, we have to take certain precautions. Therefore, we need to know if there have been any symptoms in your household that could be related to Covid-19. We don't want to offend you, of course, but on the other hand we don't want to put more people at risk unnecessarily.

Kind regards

Marco

[edxmas]

Hi Marco,

I do have a socket. To ensure it wasn't a coax cable problem I bypassed it and went directly into the cabin. In the cabin I also bypassed the splitter.

Btw, there's nothing offending! I'm more than happy to receive a technician if that helps. We don't have symptoms, I'm adopting all the precautions. Of course I expect the technician will do the same.

I sent you a private message with my phone number.

Thanks

[Wallace]

Hi,

the technician will be in touch soon to make an appointment.  

Regards

Wallace

[edxmas]

Hi all,

the technician came, he replaced the modem with a new one (he said it was broken). From that time on there were up and downs. From the latest speed tests: I have around 40Mbit (tested with a LAN cable, and all the usual recommendations). I also used ookla, and cloudflare to get jitter (which is > 30 ms - plese find it attached).

Folks, this is frustrating. I'm like "ok - switch the tv off, I need my vpn to work" or "don't run the update now" or "switch the video off, it might help".

The QoS in the past 3 months was terrible.

[Wallace]

Hi edxmas,

Do the problems occur from a certain time onwards and does it only affect the download?

Regards

Wallace