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List:       outages-discussion
Subject:    Re: [Outages-discussion] Mediacom intermittent packet loss
From:       Chad Austin <me () chadaustin ! org>
Date:       2022-02-20 3:29:05
Message-ID: b0396e6f-e402-73d4-29d7-f6d3eddc67a7 () chadaustin ! org
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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@baylink.com>
> Sent: Saturday, February 19, 2022 7:18 PM
> To: Scott Buettner <DasterinTempus@outlook.com>
> Cc: outages-discussion@outages.org
> Subject: Re: [Outages-discussion] Mediacom intermittent packet loss
> 
> ----- Original Message -----
> > From: "Scott Buettner" <DasterinTempus@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
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