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%).
ATTHelp
Community Support
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232.4K Messages
2 years ago
We apologize for the delay in getting you assistance, @adac-solutions.
We're still working towards getting this resolved for you. Thank you for your patience.
Donovan, AT&T Community Specialist
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jf9490
New Member
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37 Messages
2 years ago
Did this ever get fixed for you? I'm having the exact problem in indianapolis
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adac-solutions
Tutor
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49 Messages
2 years ago
@jf9490 No, they are still working the problem. I'll update with root cause and fix to best of my knowledge.
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ATTHelp
Community Support
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232.4K Messages
2 years ago
We apologize for the delay, adac-solutions.
We're still working on getting this resolved, and hope to be able to get you assistance soon.
Donovan, AT&T Community Specialist
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adac-solutions
Tutor
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49 Messages
2 years ago
Have we identified the problem on the @ATTHelp side? Seems like your responses would appear you are aware of it or have someone looking into it. Could I get an update?
Things definitely haven't improved maybe worsen depending on the moment.
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ATTHelp
Community Support
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232.4K Messages
2 years ago
We apologize, @adac-solutions, this hasn't been resolved yet.
We currently have an escalation ticket in to fix this. Thank you for your patience.
Donovan, AT&T Community Specialist
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tonydi
ACE - Guru
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9.9K Messages
2 years ago
Why do I get the feeling that this is appropriate for the situation?
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adac-solutions
Tutor
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49 Messages
2 years ago
I have started to track RTT and packet loss from multiple AT&T customers in my area. In this graph the "Remote One" is a friend / co-worker of mine that lives in the same county, but different subdivision then me. "Local" is me. The bottom graph is stats overlayed.
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JefferMC
ACE - Expert
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35.6K Messages
2 years ago
I'm reading that to say that your latencies line up exactly but that his packet loss (other to that one router that probably isn't supposed to be directly accessed) is much less than yours.
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adac-solutions
Tutor
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49 Messages
2 years ago
@JefferMC Yeah to rule out Cloudflare rate limiting traffic or the like I wanted to get someone that I knew on AT&T's network that wasn't having the same issue as me. Note, my neighbor is still having an issue and I'm in the process of building a rasberypi to attach to their network to get readings to see if they're metrics line up with mine.
So I'm showing that my connectivity on hop 7 from my house is horrible, but my co-worker's hope 7 is good. I can build a graph to show that. If I was getting latency earlier, like at my house or on my firewall I'd see latency beyond that point. I'm only seeing it at the 7th hop for the most part and only on my connect.
One major difference between me and my co-worker is I have static IPs and he does not.
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