trackrat2's profile

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71 Messages

Saturday, March 28th, 2020 5:00 PM

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High Ping and packet loss

Hoping for some help as I have been unable to get any help from Xfinity recently-chat/bot only wants to reset gateway which doesn't solve my issue.  Have been on hold several times but unable to get through to a tech.

 

currently on 175MPS plan.  Have a new Arris SB6183 with a Asus AX-88u router.  Wired connection to gaming PC-have tried both direct from modem and from router-still have high PL %-spikes of 30% wtih either connection.  no splitter instead the house wiring-have swapped the cat 5e cable-no difference.

 

have had the issue with high packet loss the last couple of months.  had a tech come out and he did find a signal loss-replaced a connection outside the home.  internet was better for a few days but now back to high ping, etc.  

Have ran ping plotter to gaming server, google, and direct to modem.  Modem plot is fine.  showing PL loss from 2nd hop to final hop for google, iracing.com servers and twitter.  Latency has large spreads.  Have tried different PC with similar results.

 

Here's the modem report:

 

operation of the cable modem.

 
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel   Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK  
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed  

 
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
1 Locked QAM256 9 513000000 Hz 0.5 dBmV 39.5 dB 0 0
2 Locked QAM256 1 459000000 Hz -1.1 dBmV 39.3 dB 0 0
3 Locked QAM256 2 465000000 Hz -0.8 dBmV 39.3 dB 0 0
4 Locked QAM256 3 471000000 Hz -0.4 dBmV 39.4 dB 0 0
5 Locked QAM256 4 477000000 Hz -0.3 dBmV 39.4 dB 0 0
6 Locked QAM256 5 483000000 Hz -0.3 dBmV 39.4 dB 0 0
7 Locked QAM256 6 489000000 Hz -0.1 dBmV 39.4 dB 0 0
8 Locked QAM256 7 495000000 Hz 0.0 dBmV 39.4 dB 0 0
9 Locked QAM256 8 507000000 Hz 0.4 dBmV 38.9 dB 0 0
10 Locked QAM256 10 519000000 Hz 0.6 dBmV 39.4 dB 0 0
11 Locked QAM256 11 525000000 Hz 0.5 dBmV 39.5 dB 0 0
12 Locked QAM256 12 531000000 Hz 0.6 dBmV 39.4 dB 0 0
13 Locked QAM256 13 537000000 Hz 0.7 dBmV 39.3 dB 0 0
14 Locked QAM256 14 543000000 Hz 0.9 dBmV 39.5 dB 0 0
15 Locked QAM256 15 549000000 Hz 0.9 dBmV 39.5 dB 0 0
16 Locked QAM256 16 555000000 Hz 0.9 dBmV 39.4 dB 0 0

 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 4 5120 Ksym/sec 16200000 Hz 42.5 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 35700000 Hz 42.5 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 29200000 Hz 42.5 dBmV
4 Locked ATDMA 3 5120 Ksym/sec 22700000 Hz 42.5 dBmV


 

Current System Time: Sat Mar 28 16:12:49 2020

 

Contributor

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71 Messages

5 years ago

TraceRt comparison

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Contributor

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71 Messages

5 years ago

More data.  Here's a comparison of a tracert last night and one this morning.  Internet working pretty well at 6am as usual.  Also a ping plot for what it is worth.  Thinking that I will at least use these post to update my daily results.  Not sure its doing me any good but maybe eventually I can get some help from Comcast here.

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Contributor

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71 Messages

5 years ago

for reference, here was this morning, 4/21.

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Contributor

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71 Messages

5 years ago

So Comcast is doing maintenance in my area on Thursday-hoping that means they have identified a problem or at least are doing a local system check.  In the meantime, here's my usual evening check-in.  Internet was pretty good this morning.  Here's the latest tracert-not so good this afternoon but no surprise-this happens every day.....

1 Attachment

Contributor

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71 Messages

5 years ago

And for everyone's amusement-here's tonight's ping plot-so much for trying to do much online... again even a little worse than the usual.  especially when compared to 6am.

1 Attachment

Contributor

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71 Messages

5 years ago

I was on Twitter help chat yesterday.  Confirmed maintenance in my area tomorrow.  However, he told me that they thought they had the issue already corrected and were just sending the tech to validate.  However, still looks like an issue this afternoon.  Had lots of drops on web ex at work and just ran the ping plot attached here.

1 Attachment

New Poster

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2 Messages

5 years ago

I'm having the same issue in Greater Chicago area for 2 weeks already.

Called COMCAST number of times, all they know - "restart the modem".

 

It looks they are having capacity issue due to the fact that a lot of folks are working from home now.
They did maintenance in my area, but it did not help.

Contributor

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71 Messages

5 years ago

Well, internet was better today-post "maintenance".  Still too many drops though in the afternoon.  Morning was pretty good.  TraceRT was better but still huge variances on some of the servers.

2 Attachments

Frequent Visitor

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5 Messages

5 years ago

An IT Tech at my employer believes the issue is that comcast has sold more internet service than they can handle. Similar to overbooked flights, some customers will be out of luck. Instead of getting bumped from the flight, we all receive horrible service. I contacted my local cable commission and reported the issue. There has to be some control in place to prevent comcast from "overbooking" their network capacity. Until that occurs, they will happily sell more and more services without regard to the negative impact on their customers.

Contributor

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71 Messages

5 years ago

Comcast issued a statement that the network has been handling the traffic but yes, I tend to agree with you that the pipe must not be large enough for the traffic.  So Portland/Vancouver area, we had recent maintenance last Thursday.  Performance has been better but still too many high spikes of packet loss during peak hours.  Attached a few more recent plots for what it's worth-time to put another ticket in.

2 Attachments

Contributor

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71 Messages

5 years ago

Reached out to Twitter help again-no resolution yet to the afternoon/evening (peak hours) issues.  I am not expecting immediate resolution but hoping that Comcast is looking to expand their capacity.  Unfortunately the only "choice" we have in this area is Comcast or Centurylink DSL.  However, I am continuing to collect data and will continue to post in case this helps get a reaction/resolution from our provider.   If nothing else, I think I should get credit on my bill for the PL drops I am seeing.

This morning's results-not bad.   Would be happier if I could get this performance 24 hours a day....

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Contributor

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71 Messages

5 years ago

Pretty rough performance again this afternoon and tonight-had lots of issues with my work Web Ex calls again.  Here's the ping plot from tonight-seeing PL at the first hop though which is very unusual.  It would indicate an inside the network issue, I think but since the system works fine every morning, I think it could indicate noise in the signal to the house?....not sure.  Modem stats continue to be fine-no change from the earlier screen shots.

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New Poster

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2 Messages

5 years ago

I am having the exact same problem for the last month to two months. Called several times and had a technician out, no resolution yet. I am  canceling this week without some kind of solution. 

Contributor

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71 Messages

5 years ago

Unfortunately, I don't have a better option so hoping Comcast will work towards a resolution.  I did hear back in my Twitter inquiry.  Apparently they are still doing mainatnence this week in my area.  Hopefully that is accurate but at least they did acknowledge that there is still an issue.

Contributor

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71 Messages

5 years ago

Pattern continues-lots of PL and drops today again.

1 Attachment

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