Same issue. Just got it set up and immediately checked speed. Gross misrepresentation. I have no words to express the exasperation, and I am weary of the monopoly these companies hold.
Aside from the Node being overloaded during the day and till much later at night the new modem has been working out pretty well the last couple days. It's the new XB7 (CGM4331COM) and I am using it in bridge mode. Around 2:30AM I'm hitting over a little over 900 down and 40-42 up which is where it was when I first got the service back in January. During the day the I'm getting anywhere from 10-20 upload which in turn slows my download by 50-150 roughly.
This is why I don't understand why Comcast took away the customers ability to change bandwidth channels for their WIFI connection. Now its done automaticvally by them, they claim for "performance". It doesn't seem to be working out too well looking at all the complaints.
😞 I'm kind of dissapointed with Comcast. I was really looking forward to upgrading to 1 gb service plan, but now I'm having reservations of even bothering with it seeing many others aren't getting the service they are paying for.
If you're thinking about upgrading to 1GB, unless you plan on using Comcast's modem in bridge mode, then you'll probably be okay. I don't know what happened. Last year I subbed to the 1GB XFiAdvantage and it was great, UNTIL...something happened in January that changed everything. And the comcast fellow, Larry, that I spoke to last week, squirmed every which way he could to place the blame on my equipment. Now I understand why; he apparently is aware of all the many many people reporting problems with the modem not working in bridge mode.
I have a Netgear CM1000 that will work with the service, but the plan costs less only if I use the Comcast modem. Otherwise, the unlimited data will not be inlcuded and I would have to pay $50 more a month. That's $600 a year - huge! These companies are becoming more and more increasingly greedy. The more we try to find ways to keep our costs low, the more they not only raise their costs, but literally prevent us from doing so. Meanwhile, it is my understanding that in some european countries, they don't have any limits on speed or data.
You are correct. The United States pays more than anybody I believe and we have the slowest plans.
Kind of like California and it's gas prices. We have some of the worst roads and the highest gas prices.
Anyways. Node is still not fixed, but my speeds are still doing pretty good with the new modem.
It's not likely your node will ever be fixed. According to a comcast rep some years ago, he showed me that the node in this area was bad, but assured me unless something drastic happens to it, Comcast will never replace it because that would require them to shut off service for hundreds of customers all at the same time for at least several days. He said Comcast will never do that.
I was having the same issues and I bought my own modem (SB8200) and I'm problem free! 900+ on speed tests! There's definitely some firmware issue or thottling being done on the XB6.
I can confirm that in unbridged mode, 1GB service is working fine (around 900Mbps/40Mbps). With the router in bridged mode, my speeds are around 500Mbps/40Mbps with the same setup. Unfortunately, that means to get full 1GB speeds, I need to have multiple NAT, but it seems to be working fine for all home use, as well as VPN. My setup:
OK, after a LONG wait for the xb7 Modem. Received around 3pm Tuesday April 28th 2020
Problem is still not fixed. and MUCH MUCH worse.
After install 950Mbps, switched to bridge mode as needed.. Cannot use this service in a double NAT.
Install Day Tuesday April 28th 4pm, bridge mode. 950Mbps.. YESSSS.......
Next Day Wednesday April 29th 10am, bridge mode, 942Mbps.. YESSSS......
Almost contemplated calling my exectutives office and thanking them for solving my issue.
Last Night Wednesday April 29th 11pm, bridge mode, 950Mbps....... ok great...
This morning Thursday 10am. 190Mbps, went to config page, rebooted modem, 162Mbps, pulled power cords and rebooted. 168Mpbs. and as of current.
Thursday April 30th 2:41p. 187Mpbs. things gone from bad to wayyyyy worse. Call to Executive around noon today, left voicemail. Haven't recieved response yet.
I got 839.44/13.61 almost 3 hours ago, 1:14PM my time. Quite obvious the node is being hit hard.
Way later at night when most people are in bed a little after 2AM I got 917.60/41.27 as my best. Which is what I was getting before I starting having problems.
When the upload on the node starts getting even more over loaded I get timeouts and major lag on websites and programs connected to the internet.
So far the XB7 is still working well for me, but will it last?
North of Chicago, Gurnee area....
Trust me it aint the node. otherwise doing a factory reset would net the same results in speed tests but it doesn't. it goes right back up to 950Mbps. Its the Modem/Provisioning issue. I'm suspecting something between bridge mode and Router mode. It reports back to xfinity different ways. for example... xfinity app still thinks im trying to control my wifi settings... HA.... nope.. bridge mode is just that. Just a modem. everything else ive disabled. I don't have the XB6 anymore to compare. but digging around in the gui. it looks to be the same cpu and memory. What I do not get though. is why 180Mbps vs the 680Mbps I got on the xb6..... Something doesn't make sense at all.
Executive office did not return my call today.. we'll wait again tomorrow.
BTW,, I'll run another speed test off hours like I seen someone say. 2am. had better results??? im not sure if im staying up that late. but something comparable.
south florida here. so i guess not. and this has been bugging me all year. I was hoping it was just work they were doing in the area. but they shut down everyone's internet here overnight a few nights ago, and I was hoping that would fix the issue, but no such luck. this really irks me because it has happened every single time I get stuck with a Comcast modem. Years ago I created an excel spreadsheet to log all my calls and issues with Comcast, and I'm currently at line 1082, dating from 2014 when I first decided to start logging until now in 2020.
Everytime I use a Comcast modem, it works for awhile, and then it just doesn't. And the only thing Comcast does it either swap out the modem for another one, or blame it on my own equipment. And I would have to give up a lot in order to switch to a different provider.
I get what you're saying about provisioning. And when my replacement XB6 much earlier this month worked great for a couple of weeks than all of a sudden did not. I truly believe that is a firmware or provisioning problem they're pushing on it.
I've only had my XB7 for less than a week and so far so good, but they may push something bad on it.
As far as the node.... the tech did show me that the upload on the node was overloaded which would negatively effect the download speed. During the day when there is a lot of traffic in my neighborhood and in the eveninings I can see my download speeds go down and the upload is also impacted. Late at night or early morning I'm getting full speed, at least full speed for me.
When I was on the XB6 both times I had similar high speeds than all of a sudden I cannot get past 650Mbps and even the tech thought they had me on the wrong speed plan. He was confused. When he was troubleshooting he checked the node. So he knew that was an issue. Not the main issue we've all been facing, but a separate issue for my neighborhood.
I'll continue doing speed tests to check to make sure my new XB7 doesn't get provisioned to a slower speed.
ok.. I think I may have found something.
I always disable IPV6 on my router equipment due to comcast changing prefix delagation willy nilly without informing clients. had issues in the past.
with IPV6 disabled on router. 180Mbps. after hundreds of resets. factory reset modem. 950Mbps for a day or so on bridge mode.
I just re-enabled IPV6 preffix /64. did a modem reset via xfinity app. and im right back up to 950..... <Edited>
Investigating more. But looks like it has something to do with IPV6
Hopefully they would get that fixed if it is in fact a node issue.
I had a tech try and show me a his graphing tool over an iphone reporting signal ingress when I had techs out at my house to troubleshoot a disconnecting modem that happens everyday if the temp is below 15 degrees.. of course always night time when I'm on it.. He comes out and trys explaining my modem is the issue and showed me the graphing tool. Because I owned my own modem they weren't going to do anything about the ingress signal unless I replaced my modem. Little did he know that I am a tech too. and the ingress signal was FAR below any of the communicating frequencies. After calling him out on his bluff he got in his truck phoned his boss and left.. not even a bye, or a let me check, nothing.... just walked away.... after doing some troubleshooting myself and looking over the connections. The previous tech that ran and burried the line cut the stingers too short resulting in stinger pull out.. loss of signal. Explained issue to comcast. they sent another tech. I requested that they re-terminate the cable ends. Of course its warmer during the day.. so. cought on security cam, tech comes out. climbs ladder. pulls coax out plugs it into meter than back into block. climbs back down. stores ladder away. no work done. Called comcast again. told them what I saw. had a tech out the next couple of days. came to the door and asked if it was ok to measure signals on the cable. I had to stop him during his request. and say. No. Your supposed to come out cut off the ends and reterminate properly. He was trying to explain to me that, that doesn't happen much anymore and that he was only required to verify a good signal at the poll and house. I could tell he really didn't want to replace them. After giving him a history of who I had out, and what we already done, he agreed. Ok, I will replace the ends for you. Ever since then it's stayed on.
Moral of my long story is the majority of the public are not technicians, and dealing with folks who dont have a clue to whats goin on for so long. they tend to use excuses and blame game to point the finger elsewhere. How would they know any different. So I usually take anything a tech tells me with a grain of salt, cause if I had the truck keys, and access.. I'd just fix it myself.
Now dont take it as Im saying you don't know what your talking about, or belittling what your tech showed you... The Node may very well be maxed out.. in which case they need to expand. My original post btw I was thinking you were speaking of My Node.
Man I miss my SB8200. it banged off the Provisioned speed limiter like a 16yr old does his coffee can honda.
I had a similar issue with ATT U-Verse. I had issues with them for months. Had several techs out messing with my lines connections each blaming the last guy. I finally had a supervisor come out and I showed him a sprectum analysis of the signal coming to the house. He than discovered I'm a electronics engineer. I switched to Comcast, now Xfinity, after that. This was about 8 years ago. We have 2 local AM radio stations that was interfering with the U-Verse signal. The neighborhood is still twisted pair phone-line which acts like a big receiving antenna. The U-Verse signal was operating in a bandwith that both radio stations were also in. Albeit the U-Verse signal being much wider, but the AM radio stations stronger causing a complete drop in signal in two spots making the U-Verse signal all but unusable.
So I can totally appreciate your story. I run into this more often than I should They do try to take advantage of you if they can. I don't understand why people are so lazy anymore. Than you find a few that are willing to go the extra mile.
I had an issue just a few months ago. Best Buy didn't want to install the dishwaher we had ordered. The guy came in the house and said it wouldn't fit after measuring it. I told him you're not measuring behind the tile because the dishwasher doesn't sit on the tiles. I get this song and dance about he's been doing this for years and he's a 100% positive it won't fit. Than I ask to measure the new dishwaser and thusly proving it will fit. He still refused to install it. There's a lot more to the story than that, but let's just say Best Buy hired a sub-contractor to isntall it and it only took 2 minutes to put it in and another 10 or so minutes to hook up the water line. Best part was the refunded the install fee for all the trouble. I could have installed it myself, but that's not what we paid for and end the end didn't have to pay for it at all.
I don't understand techs these days. And the amount of flat out lying that is taking place.
Anyways, I hope you all get the problems fixed soon. I hope mine stays fixed minus the node. It's defintely an Xfinity issue. I did share the IPv6 theory with a friend of mine as it's not the first time I read about it. He will try to that as a fix, if it is indeed turned off on his router, this weekend. His wife is working from home and cannot have service interupted. My wife is in the same position.
Welp its almost 1 am here. as promised I probably wont stay up too much longer.
I still have ~950Mbps with the IPv6 enabled preffix /64
time will tell. it wont last any more then overnight on prior IPv4 only. I cant confirm this for sure because its too early to tell if I turn IPv6 off again. it'll kill the theory that it works..
you dont. if your using the modem in router mode. everything works fine... this is part of the problem..... investigating currently.. So far I've been solid from my last report.
While in bridge mode you don't have access to make any adjustments. and IPv6 is on... it doesn't make sense on my end but i have a hunch to whats going on..
its in bridge mode where youd have to make adjustments to your own routing equipment.
Still on the XB7 in bridge mode. I had IPV6 turned and Hardware NAT turned off on my Amplifi HD.
The fastest I can get is about 917/42 late at night very early in the morning. It's close to 6PM where I'm at. Since my wife isn't working from home and no one in the house is on the internet besides me I thought I would experiment a little.
I ran some speed tests. I got 879/24 and 893/28. Figured it's prime tv streaming time.
I turned on IPV6. The router did indeed grab an IPV6 address. I got 800/36 and 799/34.
I turned on Hardware NAT. I got 945/36 and 945/37.
I turned off IPV6. I got 949/31 and 949/36.
I turned off Hardware NAT. I got 844/42.
I turned Hardware NAT back on. I got 948/38, 948/41, 953/38, 949/38, 947/31.
Looks like I need Hardware NAT on. These are the fastest downloads I've ever got.
Sorry this didn't help with the IPV6 scenario, at least not for me. I did tell my buddy about IPV6 and I'm still waiting for him to tell me his results or maybe he'll share them here.
I'm looking at replacing my Amplifi HD with a Unifi Dream Machine Pro and FlexHD AP's.
so your saying your currently sitting without IPV6 turned off, on your routing equipment.. it is currently set at IPV6 Disabled. and Hardware NAT on....
After tonights invasion *cough*. manifest report Data and device harvest. Is when it would drop for me. I always had Hardware offload enabled for everything. I use an Ubiquiti USG3p at the moment. soon upgrading to take advantage of the 2.5Gbase-T port. am also looking at UDM-pro. unfortunately presales cant answer my basic questions, so I have to resort to thier forums, which they never heard of a modem with 2.5GbE. getting that into the WAN side SFP+ is looking to be costly and tricky. A simple transciever doesn't work. Need media converters at $170 a pop. Also got a screenshot of the Wan SFP+ port manual negotiation rates. only 1000FDX and 10Gbit. nothing in between.
So far I am still solid at 948/42 24hrs a day... doesn't really matter what time of day. It could be the server your testing with as well.
If you do infact currently have your IPV6 disabled. and xb7 in bridge mode. Follow up with me in a couple days and see where your speedtests have gone.
I'm also having the same issues (pay for 1GBPS only getting 600) running the router in bridge mode. is it just better to just buy the 160 Surfboard modem and activate it with Comcast?
My buddy got his new XB7 with much trouble from Xfinity trying to get it. Lot's of okay we'll ship it and they never did. After several days and several phone calls he finally got it hand delivered from a tech already provisioned. It's working for him in router and bridge mode full speed. He's had it for a few days now and he's had no issues.
Mine is also working well still. Got my new equipment and have moved onto a new issue with chromecast not working even with MDNS on the new UDM Pro. AirPlay is working, but not Chromecast. Oh well... always something.
In the same boat here. Look at my chat from their support. It's no help what so ever.