I just upgraded to gigabit in Houston, TX and bought a new Arris SB8200 and having been getting inconsistent speeds. I used a bunch of different speed test sites and the numbers are all over the place. The only site that I was able to get 900 Mbps was the comcast speed test site. Other sites, i would get 700 Mbps or sometimes even 200 Mbps. Not sure if this is normal either, but everytime I reset my modem, I get like low 20 Mbps that last like 10 - 15 min before it goes up. I never had that problems on other speed tiers when reseting my modem. I have a tech coming out on Tuesday to check my line, but I want to get some other opinions on my status. I'm connected to a router, but speeds were the same even directly connected to the modem.
The status listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem.
|Acquire Downstream Channel||657000000 Hz||Locked|
|DOCSIS Network Access Enabled||Allowed|
|Downstream Bonded Channels|
|Channel ID||Lock Status||Modulation||Frequency||Power||SNR/MER||Corrected||Uncorrectables|
|29||Locked||QAM256||657000000 Hz||2.9 dBmV||40.2 dB||0||0|
|1||Locked||QAM256||489000000 Hz||2.1 dBmV||40.0 dB||0||0|
|2||Locked||QAM256||495000000 Hz||3.5 dBmV||40.7 dB||0||0|
|3||Locked||QAM256||501000000 Hz||4.0 dBmV||40.6 dB||0||0|
|4||Locked||QAM256||507000000 Hz||4.2 dBmV||40.8 dB||0||0|
|5||Locked||QAM256||513000000 Hz||4.3 dBmV||40.8 dB||0||0|
|6||Locked||QAM256||519000000 Hz||4.2 dBmV||40.9 dB||0||0|
|7||Locked||QAM256||525000000 Hz||4.1 dBmV||40.8 dB||0||0|
|8||Locked||QAM256||531000000 Hz||3.8 dBmV||40.7 dB||0||0|
|9||Locked||QAM256||537000000 Hz||3.8 dBmV||40.6 dB||0||0|
|10||Locked||QAM256||543000000 Hz||3.5 dBmV||40.1 dB||0||0|
|11||Locked||QAM256||549000000 Hz||3.6 dBmV||40.4 dB||0||0|
|12||Locked||QAM256||555000000 Hz||3.7 dBmV||40.6 dB||0||0|
|13||Locked||QAM256||561000000 Hz||3.9 dBmV||40.6 dB||0||0|
|14||Locked||QAM256||567000000 Hz||3.9 dBmV||40.4 dB||0||0|
|15||Locked||QAM256||573000000 Hz||4.0 dBmV||40.7 dB||0||0|
|16||Locked||QAM256||579000000 Hz||3.9 dBmV||40.5 dB||0||0|
|17||Locked||QAM256||585000000 Hz||4.1 dBmV||40.5 dB||0||0|
|18||Locked||QAM256||591000000 Hz||3.8 dBmV||40.4 dB||0||0|
|19||Locked||QAM256||597000000 Hz||3.8 dBmV||40.4 dB||0||0|
|20||Locked||QAM256||603000000 Hz||3.6 dBmV||40.1 dB||0||0|
|21||Locked||QAM256||609000000 Hz||3.5 dBmV||40.3 dB||0||0|
|22||Locked||QAM256||615000000 Hz||3.5 dBmV||40.4 dB||0||0|
|23||Locked||QAM256||621000000 Hz||3.4 dBmV||40.2 dB||0||0|
|24||Locked||QAM256||627000000 Hz||3.4 dBmV||40.3 dB||0||0|
|25||Locked||QAM256||633000000 Hz||3.2 dBmV||39.9 dB||0||0|
|26||Locked||QAM256||639000000 Hz||3.3 dBmV||40.1 dB||0||0|
|27||Locked||QAM256||645000000 Hz||3.2 dBmV||40.2 dB||0||0|
|28||Locked||QAM256||651000000 Hz||3.1 dBmV||40.3 dB||0||0|
|30||Locked||QAM256||663000000 Hz||2.8 dBmV||40.0 dB||0||0|
|31||Locked||QAM256||669000000 Hz||2.8 dBmV||39.9 dB||0||0|
|159||Locked||Other||732000000 Hz||7.1 dBmV||36.5 dB||162231||0|
|Upstream Bonded Channels|
|Channel||Channel ID||Lock Status||US Channel Type||Frequency||Width||Power|
|1||7||Locked||SC-QAM||23000000 Hz||6400000 Hz||28.3 dBmV|
|2||5||Locked||SC-QAM||36100000 Hz||6400000 Hz||28.3 dBmV|
|3||6||Locked||SC-QAM||29600000 Hz||6400000 Hz||28.8 dBmV|
|4||8||Locked||SC-QAM||16500000 Hz||6400000 Hz||27.8 dBmV|
The table below contains the log of events that the SB8200 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur.
Your upstream power levels are pretty low. There isn't anything you can do about it, a premise tech will have to get the repair process started by escalating the issue to the proper department. You are on the right path to get this fixed. Please keep us updated!
PS: After it is fixed you can ask for a credit for the time when you first reported the issue until it is resolved.
Update: tech came by and said it is due to a "bad modem". He said both send receive lights are supposed to be blue, but what I've read online, only the receive "downstream" light is supposed to be blue and the send light is supposed to be green. He said my line was fine, but I don't know what to believe so I have another sb8200 modem coming in today and we'll see if it's the modem that's the problem. These techs that they send out don't really seem like they know what they are talking about sometimes.
He said both send receive lights are supposed to be blue, but what I've read online, only the receive "downstream" light is supposed to be blue and the send light is supposed to be green.
You are correct because Comcast doesn't yet support DOCSIS 3.1 for the upstream / return path.
phistyle, let's take a look at your speed concerns. Please send me a private message with your full name, address and phone number tied to your residential services for help. Just click my name and then click private message me.