Connectivity
Connectivity and managing Your Comcast Business network
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Slow Speeds

Direct connection to Motorola SB6141. Between times of 1PM EST and 2AM EST speeds are far below the 75/15 plan I am on. I would say 1-4 PM is about 25Mbps, 4-10 is around 10-15Mbps, later up to 45, and then 2AM++ around 75/15.

 

signals.png

 

http://stage.results.speedtest.comcast.net/result/783181024.png

 

http://stage.results.speedtest.comcast.net/result/783182084.png

 

Have called, had a re-provision, restarted modem, had a tech visit.

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Re: Slow Speeds

THREE upstream chanels?  That doesn't seem right.  I have 4 and I have a lower upstream speed.

 

Is this a Comcast-supplied modem?  If not, maybe you could rent one of theirs for a month and see how it runs.

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Re: Slow Speeds


@tmittelstaedt wrote:

THREE upstream chanels?  That doesn't seem right.  I have 4 and I have a lower upstream speed.

 

Is this a Comcast-supplied modem?  If not, maybe you could rent one of theirs for a month and see how it runs.


Nope, 3 upstreams is quite common. Some newer systems are moving to 4; it depends on the local CMTS config. My area has 3 upstreams with the 20mbps upload speed tier, and it works fine.

 

To the original poster, your upstream power levels are quite low; it likely is causing your issues here. If this is a Comcast rental modem, you should definitely call in to tech support 800-391-3000. If it's your own modem, you mIGHT try replacing it first before you call, just to rule your equipment out.

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Re: Slow Speeds

How could it be my equipment when there are times during the day when the levels are fine?

 

Also aren't lower upstream levels fine?

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Re: Slow Speeds

For instance, I just now ran another speed test at speedtest.net, and the speeds are 80Mbps. I am assuming that this is just a bandwidth issue during peak times. How do we get this addressed?

 

If speeds for myself fell to around 50Mbps I would consider it acceptable, but these speeds are rediculous, <15Mbps on a 75Mbps Business account?

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Re: Slow Speeds


@Smapp91 wrote:

How could it be my equipment when there are times during the day when the levels are fine?

 

Also aren't lower upstream levels fine?


Yeah, it's likely your modem is fine. I just said to try a different modem just to make absolutely sure, since having a service call where your modem is the problem would potentially result in a $100 service fee.

 

Your upstreams are borderline low; if outdoor temperature/conditions cause them to drift even lower, you could see issues. They need to be within spec; if they are off on either side (too low or too high), packet loss/delay can occur.

 

See here http://www.dslreports.com/faq/16085

 

However, I just re-read your original post, and you say that during "primetime" hours (afternoon-evening) you see slow speeds, returning to normal at night/early morning. This, unfortunately, is a symptom of local congestion in your area, and the only solution (if that's indeed the problem) is for Comcast to make the requisite upgrades to your area. This is something the customer typically has no influence over.

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