Just dumped xfinity tv and in the process, I asked them what I should be getting for internet speed. She said 150 mbps. I've been under the assumption for years that it was only 100mbps. I bought my own modem a few years ago and it performs well, but never over 95mbps. That was my original internet service plan. My modem is an ariss 6121 and claims up to 172mbps. Is it possibly the old cable dangling in the back yard that's been here since I bought the house is poor quality?
Your modem should do 150 Mbps just fine. If your wired speeds top out at ~90 Mbps it's commonly because you don't have a Gigabit Ethernet adapter. If you want to do some more troubleshooting...
Start here: Troubleshooting Guide
If you haven't already, please post your equipment details (make/model of your modem/gateway/router) and a screenshot of your signal levels and your error/event log. Thank you!
@trytibbs wrote: ... 150 mbps ... ariss 6121 and claims up to 172mbps ...
Note that Comcast only rates the SB6121 for Internet plan speeds up to 101 Mbps (see https://mydeviceinfo.xfinity.com/device/arris-sb6121-365). Using a modem which is not rated for the plan you subscribe to can produce unexpected results.
Consider replacing your modem with one rated for your speed tier (see https://mydeviceinfo.xfinity.com/).
The 172 Mbps claimed by Arris is a laboratory speed that ignores several DOCSIS and TCP/IP realities. You'll never see it in the real world.
Not getting over 95 mbps and my service is suppose to be 150 mbps. I bought a new 300mbps modem, my router is capable of 170 mbps, put a brand new gigabit card in my wired pc. Spent a 100 bucks on all this. Is it because my area isn't capable of ipv6 service? This has become VERY frustrating! I don't expect to get 150mbps but I haven't gained a thing speedwise. I've spent the better part of 5 hours muddling through this, tried everything to get ipv6 enabled. If comcast isn't going to give me what I pay for, they need to reduce my bill.
What I have done. Tied my main PC with a gigabit card directly to the new modem in a comcast chat. They reran the modem settings. Cable speed is still the same. Could it be this nasty cable running to my house from a pole 122 feet away, hanging so low you can reach it? This cable was here 10 years ago when I bought the house
Just curious, are you using a good CAT 5E or better Ethernet cable? Might want to swap it out for a known good one. (That new modem you bought should've had one packaged with it)
Actually ened up being the cable run to the house. The old cable was here when I bought the house, coming from a pole 220 feet from the house and dangling in the air. They ran a new cable and I picked up a few more mbps but it still isn't over 108 mbps. That said, as the guy told me it may be the cable in my area also. They're constantly upgrading the system. I'm sure at some point, they'll find the problem. It dang sure is better than it was on all my PCs including wireless devices.