UW

Tuesday, December 10th, 2024 11:38 PM

Issues with Latency Through Comcast and Backbone Providers in Illinois

We have waited for a few days to post, but many neighbors in our service area have noticed "slowness" with their productivity apps and internet browsing. What they are actually being impacted by is latency not from their homes to your Roseville, MN hosting location, but from somewhere further along in the network routing between Comcast and its own backbone, or Comcast and another backbone provider. This has been confirmed by AWS and Microsoft as some are customers of Amazon Workspaces and Microsoft Teams for those working at home, and they have done troubleshooting with those businesses and the application support teams. Is Comcast monitoring quality of service on its own network links that our traffic is routed through? This isn't a home internet issue but still impacts customer usage of your service.

ICMP latency Comcast to GitHub:

  9    29 ms    20 ms    19 ms  be-2313-pe13.350ecermak.il.ibone.comcast.net [96.110.32.94]
 10     *        *        *     Request timed out.
 11     *        *        *     Request timed out.
 12     *        *      839 ms  ae3.cs2.lga5.us.eth.zayo.com [64.125.29.212]
 13     *        *        *     Request timed out.
 14   841 ms   840 ms   837 ms  ae2.ter1.iad10.us.zip.zayo.com [64.125.25.139]
 15   832 ms   841 ms   839 ms  209.66.120.181.IPYX-243981-004-ZYO.zip.zayo.com [209.66.120.181]
 16     *        *        *     Request timed out.
 17     *        *        *     Request timed out.
 18     *        *        *     Request timed out.
 19   827 ms     *      828 ms  lb-140-82-112-3-iad.github.com [140.82.112.3]

HTTP latency Comcast to AWS regions:

Service Availability US West
(Oregon)
US East
(N. Virginia)
South America
(São Paulo)
Europe
(Frankfurt)
Europe
(Ireland)
Europe
(London)
Asia Pacific
(Tokyo)
Asia Pacific
(Singapore)
Asia Pacific
(Sydney)
Asia Pacific
(Seoul)
Canada
(Central)
China
(Ningxia)
Asia Pacific
(Mumbai)
Africa
(Cape Town)
Israel
(Tel Aviv)
GovCloud
(US-West)
GovCloud
(US-East)
Round Trip Time (ms)* 193 582 2820 6628 791 2971 536 671 556 665 122 200 2591 2045 676 191 92
Speed Rating ACCEPTABLE SLOW SLOW SLOW SLOW SLOW SLOW SLOW SLOW SLOW ACCEPTABLE ACCEPTABLE SLOW SLOW SLOW ACCEPTABLE FAST

Often the HTTP, ICMP, and TCP/IP latency can be captured > 800 ms. ICMP and tracert indicates the issue is between Comcast Illinois hosting locations and other networks in the U.S.

5 days ago

The latency is not improving:

Service Availability US West
(Oregon)
US East
(N. Virginia)
GovCloud
(US-West)
GovCloud
(US-East)
Round Trip Time (ms)* 811 3778 860 747
Speed Rating SLOW SLOW SLOW SLOW

5 days ago

Again exiting the Comcast network and going to the Prodigy or ATT network:

  4    12 ms    11 ms    10 ms  po-300-xar02.roseville.mn.minn.comcast.net [68.87.174.109]
  5    13 ms    10 ms    22 ms  be-300-ar-in01.roseville.mn.minn.comcast.net [68.87.174.209]
  6    14 ms    11 ms    13 ms  be-1201-ar-sp02.roseville.mn.minn.comcast.net [162.151.54.57]
  7    49 ms     *        *     be-37021-cs22.350ecermak.il.ibone.comcast.net [96.110.43.5]
  8    19 ms    19 ms    23 ms  be-2212-pe12.350ecermak.il.ibone.comcast.net [96.110.33.214]
  9   806 ms   808 ms   806 ms  192.205.32.141

High latency.

Official Employee

 • 

1.3K Messages

Hey @us-wi-business-user , Thank you for visiting our official Xfinity Forums Community support page. We greatly appreciate you taking the time to reach out regarding the latency. I would be more than happy to offer my assistance looking into this further for you. Could you please send our team a direct message with your full name and full address? Our team can most definitely take a further look at this issue.To send a "Direct Message":
Click "Sign In" if necessary
• Click the "Direct Message chat" icon
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the "To:" line and select "Xfinity Support" from the drop-down list which appears. The "Xfinity Support" graphic replaces the "To:" line
• Type your message in the text area near the bottom of the window
• Press Enter to send it

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Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
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Expert

 • 

107.5K Messages

2 days ago

@us-wi-business-user @XfinityJanelle 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

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