[Outages-discussion] Mediacom intermittent packet loss

[Chad Austin]

22 seconds of latency?

Do you have gigabytes of buffers, or is something sending pause frames?

+1 to 'did you plug your PC into the modem directly?'

-Chad

On 2/19/2022 9:57 PM, Scott Buettner wrote:
> The cable carrier has done the standard "have him powercycle then send a tech out" and the techs have not found a problem in this most recent issue. (He had a similar problem in December that WAS line related and was resolved in early Jan by the carrier techs). Unfortunately he's on residential class service at the moment (which I am trying to persuade him to correct) so the level of support we're getting from the Tier 1 folks isn't ideal.
> He's scheduling another tech dispatch with them now, just to be safe.
>
> It's hitting TCP and UDP both, which is just manifesting in "slowness" on TCP of course. It's most relevant over UDP as he is a professional streamer and the most prominent symptom is frame drops on that, and I've confirmed it is affecting his connection in general, the issue is not specific to that service. I had him grab a packet loss test using devicetests.com (which looks to be based on WebRTC for the test) and we managed to grab results of it actively happening here:  https://dast-files.s3.us-east-2.amazonaws.com/packets.jpg
>
> He's replaced the modem and router both in the last 3 months, along with the cables.
> It's very intermittent, bursts of packet loss over a few minutes, then fine for some period of time (minutes to hours).
>
> He's informed me that a colleague of his located about 4 hours away on the same ISP is experiencing similar issues, but that individual is not a client of mine so I don't have anything concrete from that endpoint currently.
>
> I'm happy to keep discussing/troubleshooting, but I would like to avoid spamming the rest of the list (even -discuss), so feel free to email me directly.
>
> -----Original Message-----
> From: Jay R. Ashworth <jra at baylink.com>
> Sent: Saturday, February 19, 2022 7:18 PM
> To: Scott Buettner <DasterinTempus at outlook.com>
> Cc: outages-discussion at outages.org
> Subject: Re: [Outages-discussion] Mediacom intermittent packet loss
>
> ----- Original Message -----
>> From: "Scott Buettner" <DasterinTempus at outlook.com>
>> I hate to ask since this isn't really the forum, but I'm sort of out of ideas:
>> Would anyone from MediacomCable be able to reach out to me offlist?
>> I'm not gonna call it an outage, but I have a client on their service
>> who is having crippling intermittent upload packet loss (~85%) for
>> most of this month, calls from him to phone support have not resulted
>> in a resolution and it's seriously affecting his home business.
>>
>> Thanks in advance if anyone can assist, and sorry to bother everyone otherwise.
>> --Samantha
> The cable carrier has confirmed there's not a low-signal problem on the link, and other first-level stuff like that?  Do they have their own router, have they plugged directly into the cablemodem for test (after a powercycle)?
>
> What protocol isn't working, does other stuff not work too?
>
> You're right, this is usually out-of-scope for Outages, but at least you posted it on -discuss.  :-)
>
> Cheers,
> -- jra