I've recently come across a weird happenstance with my cable modem, provided by Vyve, the arris dg860p2. My speeds will drop down from 60Mbps to 10 over a lan connection, it seems to be, random. I was on the phone with the service tech and he said there appeared to be a bonding issue with my modem and then set an appointment for tech to replace/test. Well, the tech checked lines and signals, said I had two upstream and two downstream channels, I'm not sure if that's relevant or not, then proceeded to replace my modem. After the install and authentication, the speed test shown the same results, 10ish down about 3 up. He called his supper and was told to test the connection over wifi, we did, and the speeds were a solid 60 down and 3 up. The supp then told him to charge me a service fee, that the problem was on my end, I disputed and borrowed a laptop from a neighbor, while the tech was there, we performed the same test on the laptop over the lan and got the same results.
Then things got weird, as he was leaving he told me the supp would be out tomorrow to do some test and he left. I kept poking around trying to understand what was happening. I called the phone tech and asked him to remove my package and reapply it, because that's what they had done in the past to get my speeds to reappear. He did and sure enough the laptop started getting 60 down, however, I moved over to the desktop and tested and it was still getting 10 down. At this point I was dumbfounded at what was going on. After a few hours of testing my hardware on my desktop, Ethernet adapter, etc. I was finally able to get it something weird to happen, The 1st tab I had on chrome was speedtest, then a few more tabs researching the modem and then another speedtest tab. I was testing the speeds after everything I tried and then I realized the speedtest on the first tab would always show 10 down but the fourth tab with another speedtest instance up would pull my whole 60 down. I still thought this could be a issue with my Ethernet adapter but I was finally able to get the same issue to repeat on the laptop. I opened four speedtest tabs and tested each one, separately and was able to get this to happen on the fourth tab. The first three would show the same 60 down 3 up but the fourth would show 10 down 3 up.
I'm out of my league here on Docsis 3 and how bonding is done in the modem but it seems to me that there is a channel that I'm catching that isn't doing it correctly. With this being the third modem with the same issue, is this a software problem or a network issue?
Any help or enlightenment would be greatly appreciated!
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