We have had Comcast Business Internet for 2+ years. Everything was great until 6 months ago. Then, we started having periods where it was great and periods where we were constantly losing connectivity ( a few seconds every minute or two). It's continued to get worse over time. We've had the modem swapped for a new one recently. That seemed to work well for about 1 week. Next visit, we had techs working on lines/equipment outside. This did nothing to improve the problem. As it is now, connectivity drops frequently, often times multiple occurences per minute. Often times, we lose it for 15-30 seconds. Occasionaly we lose it for several minutes.
I have been running tracert's when it drops out for long periods and it consistantly shows traffic stopping at the same point. See pic below. Please, please help.
HI CLB. Pleas tell us if your CP is directly connected to the SMC gateway when conducting the traceroute. Our Network Operations Team found no issue with the network path to the posted IP. Also is this issue time of day specific?
Thanks for the response. Most testing, including pic, done from routed wifi network (isolation from public/static ip business net). Have also received same tracert result from staic ip'd machine connected directly to SMC. This problem happens any time of day. Sometimes we get relief for 30 minutes but always comes back. Since problem started, it has gotten worse every day. Some older business apps we must run are becoming unusable (disconnects cause session loss).
Try to capture it when there is no issue occurring and when the issue is occurring. Also is it only Google that has this problem or does it happen everywhere?
Any site I've have tried, usually test for google, google dns, yahoo.
|Downstream Frequency||667.751587 MHz||679.749634 MHz||691.747559 MHz||697.748779 MHz|
|Modulation||256 QAM||256 QAM||256 QAM||256 QAM|
|Downstream Power||-6.549619 dBmV||-6.943537 dBmV||-6.207919 dBmV||-6.690907 dBmV|
|SNR||36.174995 dB||36.386890 dB||37.092701 dB||36.386890 dB|
|Upstream Frequency||34799684 Hz||27900132 Hz||22599941 Hz|
|Symbol Rate||5120 KSym/sec||5120 KSym/sec||2560 KSym/sec|
|Upstream Power||45.2500 dBmV||44.5000 dBmV||43.2500 dBmV|
Downstream taken during longer outage (~15 mins). Upstream taken during random outage (4-10 secs every 1-2 mins), with failed ping before and after snapshot. So far, it's connectivity to all test connections, including first hop past modem (pings by IP). Occasionally, during extended periods of downtime, will see pings and tracert's getting into Comcast's network over multiple hops, but not out. In all cases, we have no fail pings to our static IP's (1 being outside face of cable modem).
The signal generally appears to be ok. With downstream you are technically ok until you hit -10. Are you able to plug directly into the modem and retest the original issue to see if it appears any better or shows different characteristicswhich may allow us to narrow it down?