The below is a copy of my post from the official comcast support forums, just looking for any feedback here. Since I rarely post anything I don't get much chance to say this, but this community has been a great resource to me over the years, many thanks.
I have been experiencing bursts of up to 50% packet loss since Friday afternoon. They come every few minutes, and my overall packet loss is ~1%. There is no fluctuation in ping ("jitter"), the packets are simply dropped. The loss is confirmed to the first available router on Comcast's network, depending on IP and route. Signal strength/SNR on the router is strong - power levels were actually high since I don't have a TV connected so I tried adding a splitter to bring them more into "norm" (from 12dBmV to 8dBmV), but the problem persisted. I've tried connecting my desktop directly to the modem, which placed me on a different subnet and allowed me to test IPv6, but the problem is still there.
I worked with a Comcast CSR yesterday who was clearly following the checklist blindly even where it was clearly irrelevant, but eventually said they would escalate the problem. Unfortunately, as soon as the chat was disconnected I got a message that the CSR had scheduled an on site technician visit - for a time I specifically said I was unavailable to contact.
This issue is causing problems for both gaming and work due to the severity of the spikes and I really would rather not have to wait until next weekend to have a technician come out and confirm the problem is on Comcast's end. Can anyone in the Portland area, or a Comcast employee, confirm if they are seeing similar issues in the region before I attempt to contact anyone else?
Thanks
EDIT: This issue seems to have been resolved, the network has returned to normal this afternoon.
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