Tutor
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49 Messages
AT&T Fiber: Slow Internet (Latency / Packet Loss) started on or right after 6/30
Has anyone else seen random slowness / latency / packet loss that started in the last week? I've had AT&T GigaPower for about 7 years across 2 homes (yeah lucked out). I guess I've been lucky, but I've never had an issue like this on their fiber 1G plan. However, something changed, which I believe to be external to my home that's caused random slowness on web browsing, video streaming, and VOIP services. Most of the speed tests results are "OK" somewhere in the 820 - 980 range across several speed test sites.
I'm in IT and so speak the language and have done the basics for sure. Restarted my ONT, Gateway, and Router. I've done this several times over the first few days. I called AT&T support and they said they saw some issues with the line from their side and scheduled a tech to come out. The tech came out 2 days ago and tested the fiber link and he said it was good and gave me a new BGW320-505 modem and left. I have tested connectivity behind my router and attached directly to the back of the BGW320-505 gateway with no difference. Also with the new router, it supports SFP so they removed my ONT and it's direct into the GBW320-505 gateway now.
I have a block of static ips on a /29 network which you'll see in the screenshot. I downloaded ping plotter and have been running that for the last few days from a client on my network behind my router. In short, it believes the issue is provider bandwidth saturation on their network on the 5th and 6th hops 12.242.113.21 and 32.142.143.102. I did a whois on both of these IPs and they're owned by AT&T.
And yes I know this data isn't ironclad as ICMP is deprioritized, but it's the best I got at the moment to show that LAN network is fine and the WAN side is not.
I have more data, this is just a quick screen grab from this morning, but I have data showing the 6th hop as an issue as well.
My router behind the BGW320-505 is a pfsense 1U rackmounted server with the following specs:
| Intel(R) Atom(TM) CPU C2758 @ 2.40GHz
8 CPUs: 1 package(s) x 8 core(s)
8103MB memory |
The utilization is always super low (less than 5%).
adac-solutions
Tutor
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49 Messages
2 years ago
Here's an example of a cloudfront .js file that was stalling yesterday while I was working. I added a test to curl to pull this file every 2 seconds or 2 seconds after last pull based on latency.
This graph illustrates where I'm seeing weird latency and packet losses. Again to hark back to the Cloudflare latency / packet loss, when that graph is clean as it was on 7/8 for about 12 hours I had my normal network back.
I'm going to continue to monitor, but I'm really hoping AT&T engages again here soon.
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adac-solutions
Tutor
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49 Messages
2 years ago
I do periodic speed test checks throughout the day since this happened. Most of them are good, which is why ATT has mostly said they don't see a problem. This issue has been more of latency and packet loss, but I just got a speed test to give me crap results like I see with streaming, website browsing, etc.
(edited)
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JefferMC
ACE - Expert
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35.6K Messages
2 years ago
FYI, your public is in the screenshots. If you care about that, you might want to edit them.
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DanBarq
New Member
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1 Message
2 years ago
I also live in the Atlanta area, have a public /29 subnet, and have been struggling with this for at least the last week. When it's happening to me, it is always at this hop #5 of my traceroute (I cleared out most of the address for hop 4, but it is the next hop after my the AT&T side of my public subnet's gateway address):
4 2 ms 2 ms 2 ms 76.x.x.x
5 * 620 ms 517 ms 12.242.113.44
When things are running smoothly, hop 5 is 2-3 ms. When performance is tanking (web pages taking forever to load, streaming just spinning, etc.), I see consistent triple digit or timed out pings at hop 5.
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adac-solutions
Tutor
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49 Messages
2 years ago
@danbarq thanks for sharing. Something has changed in the past couple of weeks that has made the network worse, but not in a way that's easily repeatable. It's definitely something you feel throughout the day. It's causing real issues at work with failed docker image download / uploads, doing SSO logins can some times take 7 tries to get through the back and forth hops because of stalled webpages. Watching movies at home we have pretty much every streaming service (Edited per community guidelines) right now.
I'm working on building a sensor that sits at their gateway and combining it with the one I have behind me 3rd party gateway, which as far as I'm concerned I've proven isn't the issue. This way I'll track traffic shape and latency on the frontside and the backside at the same time.
I'm also going to try testing with the default dynamic public address. Something I was thinking about this weekend is I wonder if there was a network change, but people with static ips /29 are being handled differently and therefore it's not normal for techs to "see" our problem. I have 2 co-workers on AT&T fiber in the greater ATL area and they have no issues in the same traceroute and pings as I do. I'm actually going to install a sensor on one of their networks.
In short though if I don't start getting some attention to my problem I'm going to start looking for service else where.
(edited)
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ATTHelp
Community Support
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232.4K Messages
2 years ago
Thank you for letting us know about this, @DanBarq . Due to what you are experiencing, we'd like to invite you to a Direct Message so we can take a closer look.
Keep an eye out for a notification at the top right-hand corner of the forums, next to the bell icon, for our Direct Message.
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adac-solutions
Tutor
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49 Messages
2 years ago
What the heck @ATTHelp . Yes I know you don't actually get this, but you sent this same DM style message to me 5 days ago. I'm still waiting for my DM.
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ATTHelp
Community Support
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232.4K Messages
2 years ago
Hey there, adac-solutions.
It appears there's something wrong with our current messaging system, as it isn't allowing us to message you. We are currently looking into this issue, and hope it will be resolved soon.
Thank you for your patience.
Donovan, AT&T Community Specialist
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ATTHelp
Community Support
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232.4K Messages
2 years ago
Hello again, adac-solutions.
We're still working on getting this resolved for you. Thank you for your patience.
Donovan, AT&T Community Specialist
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adac-solutions
Tutor
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49 Messages
2 years ago
So myself and my neighbor are still having consistent issues with streaming buffering, website browsing and VoIP.
Random websites take forever to load one time across multiple computers in my house for work and personal. When I run into a file that "stalls" out I have created tests to monitor that file.
In one case it's the sso chooser for AWS Console 0.js. This file is 4.2MB in size. Most of the time it takes 150ms. To NOTE this is an example of the type of behavior I have on any given page load, streaming video (Netflix, Vudu, Amazon Prime, Disney+, Hulu, Youtube, etc).
I've included 3 screenshots showing the last hour of this post, the last 2 days of this post, and a zoomed in version of the last hour to show the typically time to download when things are good.
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