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Continuing my previous post that was closed: https://forums.cox.com/forum_home/internet_forum/f/internet-forum/21292/internet-issues---consistent-lost-packets-north-phoenix-arizona
The same issue is still occurring. I now have months of data collected to support packet loss beyond my home, as well as an in-home Cox technician that confirmed the infrastructure beyond my home was the issue and that he was seeing packet loss at my tap while excluding my entire internal network. The call date was September 8, 2018 and packet loss beyond my home should be notated on my account in accordance with that call.
Here are screenshots from a packet testing utility I've been using while hard wired to my modem and through a router - the same packet loss issues persisted with or without the router in between. Packet loss also persisted through different hardware and operating systems. This packet loss issue persisted through three separate/new routers, two separate, brand new DOCSIS 3.0 modems, a Cox supplied Panoramic modem/router combo as well as the current Motorola MB8600 DOCSIS 3.1 modem. The modem provisioning can be found in my account history.

In the photo below, you can see lost packets using UDP (in the Ping Plotter application window, not a normal ICMP request that would normally be dropped due to low priority) and a normal ping in the command prompt window both displaying dropped packets at the same time using two separate types of communication:
Here is a screenshot from my modem indicating the uptime (less than three weeks, modem is brand new) and the several hundred thousand of corrections needed on bands 2-21:
I called Motorola to confirm my understanding of the "correction" column, and was immediately informed that the number of corrections based on the modem's status page is indicative of an issue with Cox's infrastructure beyond my home.
My RG6 line runs direct from the tap at the outside of my home to my modem - no splitters or other devices in use, and was replaced about two months ago by a Cox technician. The RG11 line that runs from the closest Cox ingress point to the outside of my home was replaced as well, about two months ago.
There is a problem with the Cox infrastructure in my area of Phoenix. I've been dealing with this problem for months, and have provided Cox with dozens of data sets like the ones linked in this post - yet no tangible corrective measures beyond replacing the lines running to my home have been taken.
I currently have a complaint in with the FCC and FTC, and will continue documenting and communicating this information out until the issue of packet loss is identified and corrected.
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sjo102784
Contributor
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Here is an image of my internet from last night. 20+% packet loss. This is ridiculous and deserves to be addressed.
As you can see based on my previous post, the number of corrections made by my modem went up by 10,000 or more on several channels following the service outage last night:
I was unable to maintain a 1080p video stream from YouTube, let alone play games online. All devices suffering packet loss were hard wired to the router. Modem is brand new, DOCSIS 3.1 - Motorola MB8600 - approved for Cox's network according to your list of certified modems: https://www.cox.com/residential/support/cox-certified-cable-modems.html
My router is brand new and is demonstrating no issues according to my packet loss tracking utility. This is a problem with Cox's infrastructure beyond my home.
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Michael-MS
New Contributor III
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I hope they fix this for you! I'm in Las Vegas and just had my first packet loss issue tonight. Download is fine, Upload speeds are at crawl speed and I can't play Fortnite or stream on Twitch since 6 PM, just about 8 hours now.
Tech support told me my modem was bad, no other complaints in the neighborhood. So I went to Walmart and got a brand new one... $97 later... still 25% packet loss in Fortnite and 50% loss in StreamLabs. Tried disconnecting the router, no go. Service was 100% perfect for months now... I think I took it for granted. This is horrible!
They have an appointment setup for tomorrow and no way to escalate the issue because nobody else is reporting it. The packet loss is only on the upload, so probably nobody even notices it.
Anyway, sorry to hijack your thread a bit, but I needed to vent a little. Hope they get it fixed for you and also hopefully my problem goes away so I don't need to make a thread of my own for Vegas! Peace <3
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sjo102784
Contributor
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Major packet loss for about 70 minutes this morning:
Cox help is still suggesting an in home tech. Unbelievable. Escalate this. This is what you use the 90% profit from internet service to fix and improve.
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sjo102784
Contributor
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Update - the packet loss is back again:
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dbhanna
New Contributor III
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I'm in North Phoenix also and I am having problems also. Since the big push to bring in 1Gbps service to the area all the old infrastructure problems are showing up. The backbone carrier speed has increased a lot which also raises the noise floor, a lot. I think that Cox may be interrupting the data channel to try and get performance data on the cable nodes and that probably is not working out vary well.
https://www.cablelabs.com/insights/cable-broadband-technology-gigabit-evolution/
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sjo102784
Contributor
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Bringing this back up - on November 11, overnight, Cox field techs performed work to our neighborhood node. I did not experience packet loss or spikes in latency for 16 days, until today - November 27.
Unfortunately/not coincidentally today - I noticed a Cox tech out at our neighborhood node around 9:30AM. After that particular visit, I'm now seeing the same packet loss issues I was seeing before, possibly worse. Here is supporting data:

Before contacting Cox tech support:
After contacting Cox tech support and refreshing my modem:
Here is a screenshot of connection data from my brand new DOCSIS 3.1 modem:
One channel (channel 2) has logged over 18,000 uncorrected packets over the past nine days of uptime. Every single channel has logged hundreds of corrected and uncorrected packets. This is ridiculous.
Why is this still an issue? Two FCC complaints, a BBB complaint, local Phoenix city complaint, dozens of phone calls to Cox tech support with very specific data sets, dozens of emails to Cox support with additional data sets, at least half a dozen neighborhood node visits by Cox field techs since November 11, 2018 - why can't one of the nation's largest ISP's figure out the problem plaguing my area of Phoenix? This should be embarrassing to Cox tech support and field technicians. It is apathetic at best, malicious at worst from my perspective as a customer of ~10 years.
This is not a complicated issue. If the infrastructure is the problem (which my neighborhood node is), take a portion of the $100/mo payments from your literal millions of customers in the Phoenix area and repair or replace the problematic infrastructure. I would imagine one market's gross of (conservatively) a hundred million dollars a month would allow the funds to replace faulty infrastructure.
Come on Cox.
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sjo102784
Contributor
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More data confirming problems related to packet loss and high latency at or beyond my neighborhood node as of this morning:
Why has this not been fixed?
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sjo102784
Contributor
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Internet is down a second time today, going on over 30 minutes now:
Why Cox? Why can't you invest in functional infrastructure? What is so hard about that?
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sjo102784
Contributor
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Here's what my modem's number of resolved and unresolved packets are:
As you can see, tens of thousands of uncorrected lost packets due to problems beyond my network.
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sjo102784
Contributor
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This has now been going on for over 90 minutes.
This is awful customer service for a major ISP.
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sjo102784
Contributor
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Still ongoing -
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sjo102784
Contributor
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Update - I've had bad packet loss most of the afternoon today My internet went down hard (100% packet loss) according to my network monitoring utility around 7:45PM. Still down as of 8:25PM.
Hopefully this means that after over a year of problems and over almost five months of data driven complaints Cox is attempting to finally fix the issue. I will update this thread with the results
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sjo102784
Contributor
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Outage ran from approximately 3PM to almost 1AM yesterday, off and on.
Here is a block of 100% outage, not sure why:
Here's a shot of packet loss while I was asleep:
Here's a shot of my modem's up time along with the total number of corrected and uncorrected packets lost in the last 11 hours. As you can see, it numbers in the hundreds of thousands:
Why is Cox still dragging their feet on this and trying to suggest I need a 14th in home visit? This has already been confirmed by an in home tech to be outside of my home. Yesterday, I had a tier 2 tech ping my modem and she found 12% packet loss between her system and my modem - that's 12% packet loss just utilizing Cox's infrastructure - nothing internal to my home aside from my brand new DOCSIS 3.1 modem.
Why hasn't this been corrected? This has been ongoing for over a year now, and I've had specific data, official complaints, and dozens of sets of communication about this since July of this year. This is an embarrassment.
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sjo102784
Contributor
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Packet loss problems are still ongoing:

Three hours of high packet loss during peak time last night.
As stated before, your field techs servicing my neighborhood node on Nov 11 appeared to have corrected the issue (zero issues of packet loss for 15 days straight) - until they came out last week - I believe on the 26th. After servicing my node on the 26th, my service deteriorated to normal high packet loss levels.
Please fix this. I am in a state of constant disbelief at your company's poor level of service in a city of 4.5 million people.
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sjo102784
Contributor
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Hilariously, as I was trying to load this forum post, I started experiencing high enough packet loss that I was unable to load the page. Here's a screenshot of the packet loss I'm currently experiencing - AGAIN during peak times. Why are your techs never out during times of poor service/high utilization?
For those of you reading this post, once the informal complaint time limit expired on my FCC complaint, Cox completely ceased communication with me on this issue. They only care about serving their customers while they are legally obligated to communicate. Prior to the time window expiring, I was receiving at least some level of consistent communication and attempts at a fix. Now, nothing.
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