Cool Ideas Fibre ISP – Feedback Thread 3

[Diabolix]

Internet just died in Cape Town, Kuilsriver area.

On openserve, what's happening?

 

[DuckKnuckle]

Same here. Brackenfell

Yeah same area. Back up now

 

[PBCool]

No maintenance on our side going on.

 

[Bighit]

Another one, vumatel, stellenberg, dead

 

[DeatheCore]

Still been having daily intermittent "drops" on my Vuma line, Panorama CPT. Not sure if this is related to the rest of the peeps whose lines just dropped.

Fired up a trace while it was happening:

 

[Bighit]

Another one, vumatel, stellenberg, dead

And she is up

 

[jannier]

Also having issues now, internet is off/on/off/on ... Brackenfell, CPT, Vumatel Trenched, 1000/100

Could this maintenance of this morning be a factor/cause?

Cool Ideas - Western Cape Emergency Maintenance - Cool Ideas

 

[CrypticZA]

Internet died for about 25 seconds on Vumatel as well and was connected to VPN so maybe Vumatel network issue?

 

[PBCool]

Also having issues now, internet is off/on/off/on ... Brackenfell, CPT, Vumatel Trenched, 1000/100

Could this maintenance of this morning be a factor/cause?

Cool Ideas - Western Cape Emergency Maintenance - Cool Ideas

If it was then it would have been happening since we did the change so unlikely, did your service go down this morning?

 

[Nerhzelok]

Cape Town, Southern Suburbs, went down a short while ago for a bit.
Unsure if this is related to the upgrade? Can't really test because don't have a Cat5e cable from CPE device to my router.

 

[TheRoDent]

Still been having daily intermittent "drops" on my Vuma line, Panorama CPT. Not sure if this is related to the rest of the peeps whose lines just dropped.

Fired up a trace while it was happening:
View attachment 810991

Have seen the conversation with Divian and Vumatel around this. It is being followed up regularly.

 

[DeatheCore]

Have seen the conversation with Divian and Vumatel around this. It is being followed up regularly.

Coolio!

 

[jannier]

If it was then it would have been happening since we did the change so unlikely, did your service go down this morning?

I only started using the internet at around 10ish, so not sure....

 

[Slinetpixel]

Automated tests
View attachment 810951

Same as @abudabi, curious about the scripts / seyup on Mikrotik

 

[leppie]

Curios.. are those tests running on a 'tik ? If so what might they be called?

Nope, it is just simple .NET Core app I wrote before Speedtest released their CLI app.

GitHub - leppie/Speedtest: Simple .NET Core app to get download speeds and pings

Simple .NET Core app to get download speeds and pings - GitHub - leppie/Speedtest: Simple .NET Core app to get download speeds and pings

github.com

 

[leppie]

More likely a full queue, or buffer on a switch

Would either of those explain these latency patterns though? Either is either 2ms normal or 10ms when 'throttled' . It is not gradual at all.

 

[TheRoDent]

Good explanation here.

Switch Buffer Sizing

What is the relationship between a switches buffer size and the effect it has on latency? I am aware of the bufferbloat issue and understand that buffers that are too large in networks of slower BW...

networkengineering.stackexchange.com

Octotel switched to a lot of Arista kit about a year ago.

So the switch isn't dropping your packets, but rather buffering them until it can transmit it without loss, which increases latency in lieu of packet loss. This can cause a lot of out-of-order packets which messes with TCP a lot.

This obviously happens during congestion.

Have you considered using a VPN?

It might get you past the switch buffer issues.

 

[leppie]

Good explanation here.

Switch Buffer Sizing

What is the relationship between a switches buffer size and the effect it has on latency? I am aware of the bufferbloat issue and understand that buffers that are too large in networks of slower BW...

networkengineering.stackexchange.com

Octotel switched to a lot of Arista kit for backhaul about a year ago.

So the switch isn't dropping your packets, but rather buffering them until it can transmit it without loss.

This obviously happens during congestion.

But would that not imply it would be more of gradual thing? Or maybe they turn on (or increase) the buffers based on some conditions?

 

[TheRoDent]

But would that not imply it would be more of gradual thing? Or maybe they turn on (or increase) the buffers based on some conditions?

Well, the switch would decide when it's uplink is congested, and then start deep buffering.

I doubt they are "manually" doing this.

 

[Ghost02]

Does anyone know how long it takes to get your PPPOE details after your Octotel line has been activated?