[ale] Slightly OT: AT&T Fiber upload failures.

[Jim Kinney]

See if google has an iperf3 reciever. I've found the tool tracepath to give
very good info about all the hops between start and end points.

Ask to speak with their manager because the SLA is not being met. It
doesn't seem to be on your end but between your entrance to AT&T and their
exit point.

Test against here:
https://speed.cloudflare.com/

The cloudflare test is something AT&T will care about as they also rely on
them.

And there's other testing sites as well.  Get the numbers and the data from
tracepath so you can show a rout problem.

Thanks for being Tier3 training support for AT&T . <facepalm>

-- 
James P. Kinney III

Every time you stop a school, you will have to build a jail. What you gain
at one end you lose at the other. It's like feeding a dog on his own tail.
It won't fatten the dog.
- Speech 11/23/1900 Mark Twain


*http://heretothereideas.blogspot.com/
<http://heretothereideas.blogspot.com/>*

On Sun, Jun 28, 2026, 3:11 PM Neal Rhodes via Ale <ale at ale.org> wrote:

> We've been chasing AT&T on streaming upload failures on a Business Fiber
> setup for about 6 weeks now.
>
> We've been streaming Sunday Morning services to Youtube for years on
> Comcast.
>
> Switched to AT&T in March.   And........ increasingly were having Youtube
> abort the stream.
>
> We were sending 60fps video, which amounted to about 6mbps; this is on a
> 20mbps Fiber connection.
>
> We dropped that to 30fps video, which is about 3.5mbps.
>
> I ran the Speedtest CLI every 5 minutes from a script for several 24 hour
> periods, and found Max Upload Latency all over the highway, from 5ms to
> 528ms.   (BTW, we understand the upload SLA to be 37ms)
>
> Granted, the Speedtest test tries to shove 20mbps upload; whereas we are
> trying to get consistent 3.5mbps.  this is to an AT&T Speedtest host in
> Atlanta.
>
> I'm getting close to nowhere arguing with AT&T.    I recently took the
> church completely offline, disconnected our Unifi router, connected
> directly to the AT&T Calex box, ran the same tests, had roughly the same
> results.
>
> AT&T level 2 support is asking ME to tell THEM where in the hops from us
> to THEM that THEY are bottlenecked.     Kinda hard, since MTR or TraceRoute
> gets 2 hops in, and then it's just stars with no data.  'cause their
> equipment isn't replying to me.
>
> Anyone have ideas, either on troubleshooting, or finding anyone within
> AT&T that actually knows anything about testing their own equipment?    I
> was wondering about iPerf3, if they had a server for it.   It would be
> better to test a realistic 4mbps upload.
>
> Anyone know the process to file a formal request for a failed SLA credit
> with AT&T?   The minimal docs I have apparently are no longer correct?
>
> regards,
>
>
> Neal
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