New Contributor III
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23 Messages
Downstream very slow, upstream fast.
I have had the same equipment setup for nearly a year now. I have no signal/connectivity issues, and my SB6121 is bonding 4 x 4. For some reason my Premier internet is only giving 2 Mbp/s speeds downstream. The upstream has been very fast (~15 Mbp/s). I'm really disappointed because I've had speeds of 45 Mbp/s the entire time I have lived here until the last few weeks. I've reset the modem, connected direct, etc.. etc. NO change.
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cvakulskas
New Contributor III
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23 Messages
Though I have no idea why, the connection speeds have been consistently fast for one week now. I will mark this as solved, but I don't know exactly what happened. I will reiterate (and probably for the 50th time) there are no router, wifi, or any other issues on my side. I've done exactly as instructed by numerous support staff (tier 1 and 2) as well as tech to identify problems in my home and there were none. I hope my consistent speeds continue.
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cvakulskas
New Contributor III
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23 Messages
I should add that I had a tech out for an unrelated (solved) issue a few weeks ago, and he said my signal levels were fine, and no ingress.
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cvakulskas
New Contributor III
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23 Messages
I've been doing Cox speed checks and it looks like it slows down dramatically during peak hours (7-11:30), then goes back up after that. Perhaps the problem is network congestion? I wouldn't have guessed it would have slowed down THAT much.
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Trikein
Contributor III
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806 Messages
I do not know your market but I will assume your Premier is up to 50Mbps. I can see network congestion accounting for 10% or even 20% performance nerf but to go from 45 Mbps to 2 Mbps..what is that...400%? I doubt it. I think something else is going on.
So you said your signal levels are good, but do you mind posting them so we may critique? Because if service truly is good going into the modem, then I would start looking for packet loss. Try pinging cox.net.
Also, what are you using as your bench mark for your 2Mbp/s speeds? A speedtest site?
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cvakulskas
New Contributor III
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23 Messages
I've attached copies of my signal and speed tests. The speedtests you observe are from Cox' internet tools. The speeds are a little faster than I listed (I was using a different method originally). What you can see is a striking reduction in speed during what people would classify as "high traffic hours". I think the slowdown is well beyond what people would consider reasonable/acceptable.
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cvakulskas
New Contributor III
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23 Messages
Just to reiterate, what I'm seeing here is about a 5 to 10 fold decrease in internet bandwidth during peak hours. Is this normal? Is there a problem in my area? I just want to know if I can expect this to be the continuing trend, or if I can expect it to be resolved. Thanks for any help people can provide.
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Trikein
Contributor III
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806 Messages
No that is not normal. I have never seen network congestion that bad if it truly is that.
What was the unrelated issue a tech came out for?
What market are you in OKC?
Is this multiple computers? Have you ruled out a possible PC issue?
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KipK
Former Moderator
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606 Messages
Premier-D3 in Gainesville/Central-FL is 36 down/5 up.
If there was enough congestion there to cause a notable drop, we'd have done a node split already. I've been seeing that kind of activity going fast and furious on the overnights in that area for months in preparation for the nationwide speed upgrade.
It looks like this modem actually got the latest firmware after I mentioned it on the last thread, and has been very well behaved in terms of timeouts since then, and levels are doing alright. The only thing I can think of that would be causing this off the top of my head is if it's being tested on a wireless connection and there's a lot of radio traffic in the area during peak times.
The connected Ethernet MAC address reads as Apple but we can't tell if that's a router or a computer. If it's a router, how does the connection run if you bypass it and connect a computer directly?
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Trikein
Contributor III
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806 Messages
Wht does that test data say OKC and Atlanta as location? Is that some centralized testing server? Did the site glitch? Bad Geotag data?
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KipK
Former Moderator
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606 Messages
You can select the testing server location on the test page. I think Atlanta is the closest one for the Southeast region:
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cvakulskas
New Contributor III
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23 Messages
My internet was hooked up to an Apple time capsule on the obscure 5 ghz frequency. I, however, did as you suggested and hooked my laptop DIRECTLY (gigabit ethernet) to the modem and have slow internet at 9:50 pm eastern. I have attached an image of the speedtest. There are apparently a number of other people in the Gainesville area having the same problem. I stress that this speed issue is a relatively recent problem. Over the past 6-9 months it has been blazing fast with few exceptions. I don't know if this is related, but my modem has only ever bonded the downstream signal. Since the service is really only 5mbp/s upstream I didn't think much of this since a single channel can handle that speed just fine. All of the sudden my modem is routinely bonding both upstream and downstream, which I viewed as a good thing. My nightly congestion problems started right after this.
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cvakulskas
New Contributor III
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23 Messages
Still having the problem as of the 18th. Most reasonable people expect some sort of drop in there speed during peak hours. I pay for a service that is 35 mbps (in my area) downstream and while I get even faster (45 mpbs) during non-peak hours, I get around 2 mbps to 10 mbps during peak hours. This is an average of approximately 4 to 18 times slower than the advertised rate, and I do not view that as acceptable. Is there anything that can be done about this? Is there an acknowledgment of the problem? Clearly I am not the only one (in the Gainesville area) that has started a thread about this.
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hwitt913
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7 Messages
Did you say you were in Gainesville? I am having the same type of issue. I have Ultimate service and for days at a time I will get speeds of 1-2 Mbps. Same thing with a technician coming out and the signals are fine. According to internet tests my rate is not being throttled by Cox. One person on the phone said they are working in my area but didn't have any details. I want to upgrade my firmware and see if that helps, but the modem, DPC 3010, was working fine for a few weeks to months so I don't know if that will help.
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cvakulskas
New Contributor III
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23 Messages
Are your troubles dependent on the time of day? Mine are very clearly congestion related as they correspond EXACTLY to what is considered to be internet "rush hour". My modem is a Motorola SB6121 which is DOCSIS 3.0, but it can only bond 4 x 4, which ironically is still capable of handling far faster speeds than Cox advertises for Ultimate, though the service requires a modem that can bond 8 channels. I'm now wondering if this has to do with all of the students returning for the semester. Approximately 50,000 heavy internet users suddenly are back has to put a strain on the system.
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hwitt913
New Contributor
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7 Messages
Mine may pick up late at night but not to maximum speeds. I think that is possible but a lot of the students are on the UF network that is self sustained and this happens every semester so I think they'd have it figured out after the 100+ years the university has been around. That being said, could be. I have a modem that does 8x4 and it's still slow. My upload speeds are fine though.
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