Daily Lag Spikes

[jarrelp]

Over the past few weeks I have been experiencing lag spikes, all times during the day and night.  When running a constant ping to 75.75.75.75 or 75.75.76.76 packets will drop then spike to over 3200 ms on the next responding ping. 

[EG]

Your pictures are broken. FWIW do not run ICMP packet based pings to the Comcast DNS servers as they are deliberately configured to de-prioritize these probes. Choose other targets like sites that you are having a problem with, your Comcast WAN default gateway address, or google.com etc.

[jarrelp]

I understand pinging internals ie the the cmts, dns servers, or any other internals with have a skewed result.    But pinging somewhere like yahoo.com, google.com, and or the gateway ip yields the same loss and spikes.  

 

Thanks,

[EG]

How do the rest of the downstream channels look ? Also post the RF error log entries.

[jarrelp]

SecondThirdFourth

The only logs available are Event, System, & Firewall. 

[EG]

The signal stats look. The modem's RF error log entries would be helpful. I don't have a CC gateway device so I can't tell you where to look for them, sorry. Is this with a WiFi connection ? If so, for a test, does a computer hardwired directly to the router / gateway device with an ethernet cable have the same problem ?

[jarrelp]

I am not using wifi, the computer is cat 5 to the arris gateway.  I don't think this gateway gives the end user access to the RF log.

[jav6joev]

Using a utility for TRACEROUTE to the IP addresses might show which leg is having issues.  It could be there is a router along the way from your location that is having issues.

Using the command prompt TRACERT on my desktop:

C:\Users\Joe> tracert 75.75.75.75

Tracing route to cdns01.comcast.net [75.75.75.75]
over a maximum of 30 hops:

  1     1 ms    <1 ms    <1 ms  192.168.1.1
  2    17 ms    17 ms    24 ms  96.120.26.117
  3     9 ms     8 ms     9 ms  69.139.233.53
  4    22 ms    14 ms    12 ms  be-125-ar01.area4.il.chicago.comcast.net [68.86.188.93]
  5    18 ms    11 ms    10 ms  ae100-ur02-d.area4.il.chicago.comcast.net [68.87.210.6]
  6    40 ms    10 ms    11 ms  dns-sw01.area4.il.chicago.comcast.net [68.86.188.70]
  7    11 ms    10 ms    11 ms  cdns01.comcast.net [75.75.75.75]

Trace complete.

[EG · Accepted solution]

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@jarrelp wrote:

I am not using wifi, the computer is cat 5 to the arris gateway.  I don't think this gateway gives the end user access to the RF log.

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I'm going to try escalating your issue to the Comcast corporate employees that are available to these boards. You should get a reply here in your topic.

[jarrelp]

Thanks

[EG]

Topic now being closed as per the original poster's request.

[jav6joev]

Can someone share what the resolution was?