i have comcast highspeed internet that i pay twice as much as dsl for. it is advertised to be at least twice as fast as dsl. but it started running very slow recently. i ran a test on pcpitstop and cnet website to test my speed. i am not getting any more than 600 kbps. before, i used to get over 5000 kbps. i thought the problem was my 4 yr old dlink 614+ router so i went and bought a wireless linksys 2.4ghz 802.11g and payed extra for speed booster. my internet speed stayed the same. then i thought the problem was my comcast modem. so i reset it with a pin, but my internet speed was still slow. what can be the problem?
note: i only use a wired connection and i have 4 pcs connected to the router through the cat5 outlets in seperate rooms. my d-link router was also slow before with only 1000 kbps. but after resetting it, i had over 5000 kbps for about a month before my speed became slow again.
Your provider probably severely oversubscribed your node. Downstream and upstream bandwidth is shared by all the people on the same node as your are. The more users on the node active at the same time, the slower you get. They could do things like node splits to make the nodes smaller. They could also change downstream and upstream modulation schemes to get more bandwidth.
My neighbor was having the same problem with comcast. I tried reseting everthing. Clean the PC of all kinds of little items, internet cache, win temp files ..... Optomize the pc. She had contacted comcast and they reported the modem as slow. What I found was the WAN port on the router and modem was having problem. I ended up blowing everything away and set it back up. Still had a slow connection. What did work was a direct connect to my notebook, for a couple of minutes. Then reconnected to the router and everything went back to normal. Something was hung some where.
okay, so if you connect straight to the cable modem, what about those people who have vonage and have to hook up to that via ethernet from cable modem to vonage router.....?
is there a way around this, so they have the phone yet a faster internet upload/download speed?
I know when I had dsl, it was great... could open up mulitple pages for things I was researching.....Now. with cable , I have to wait for pages to upload before I can do anything else?
and Why? does cable share the lines and say its faster than dsl?
how did dsl work compared to what cable is doing??
Test the Speeds during different times of the day.
This would be a good way to test if things are over-subscribed.
If it is, you will see better performance at 5am than you do at 8pm.
Also, connect your PC directly to the Cable Modem to eliminate the router completely.
Also try doing a ping -t xxx.xxx.xxx.xxx where this is the Cable Modem's router. Then try it against Yahoo.
If the first is slow, then there could be an issue on your local loop.
If the first is fast but the 2nd is slow, there could be an issue on one of the routers a bit further out.
I would run the tests and then contact comcast with the results.
600KB is not acceptable currently.
I know I had "oversubscription" issues with Cable so I switched to DSL for more speed. My cable was fine except for between say 6pm and 11pm when it dropped way ways down.
im haveing this same issue. my DSL at work has way better ping across the WORLD.with no jitter my COMCAST pings well over 275 with 20-60 jitter. when i play games on comcast all i hear is you LAGG when im on DSL nobody complains about me laggin.WTH. I pay twice as much for comcast.
Depending on where you're located and what you're doing, you may be in an area covered by ComCasts "throttling" "tests" or they have you pegged as an "access abuser". The latter is especially onerous because they are telling you you cannot use all the capability you are paying for...and I would call them out on it and demand the service I am paying for. I have RoadRunner and, so far, I haven't seen anything like that--though my upload speeds are FAR different (slower) than my download speeds. In my case this is probably due to a retarded computer, though I just discovered it last night and haven't had a chance to check it out.
Another thought...check with some of your neighbors and see what speeds they are getting since they are most likely using ComCast service also. If they are about the same as yours then it's probably a system problem somewhere. if yours is the only one that's slow then get on ComCast and demand to know why--threaten legal action for contract issues (lack of specific performance for targeted slow access when you are paying for unlimited access) if necessary to get them to respond. And by ALL means demand a cost rebate for degraded service.
After some further research, it seems that the present system is designed for slower upload speeds than download speeds. That was not usually a problem because our computers download much faster than we can type. However, with the speeds of computers these days, the sizes of files we receive AND send, it is becoming a bottleneck. It is not a bandwidth isue, per se, because the bandwidth exists in both directions, especially on fiber networks. The problem is ISPs not upgrading both sides of the channel--it's cheaper that way for them. Presently, the only real way around it is so-called "business" access, which essentially means they activate high-speed upload capability, for a price. The only way to really end the bottleneck is pressure on ISPs to make up and download speeds more symmetrical, either from disgusted users or from the government mandating it. Lots of luck in either case.
I have Optimum online and have an intermittent slow speed down load (<100kbps after the tech replace the modem the issue went away. I ask the tech what's difference about the modem that I got now & the 1 he replaced, and his reply was that the 1 that I have before was for residential and the 1 that he used is for commercial account. I hope this help.
if you're having issues with your speed then you're gonna have to have a tech look at it. it will either be your modem or something on your lines (ie bad splitter or bad fitting etc). just so you feel better i can tell you that your downstream signal should be between -5 and +5 dB. your upstream signal should be between 40 and 50 dB. your Bit error rate should be no less than 9 e-7 (preferably it will be e-9 but shouldn't be lower than 7) and your modulated error rate should be no less than 30. don't be afraid to ask the tech about this stuff. i know i wouldn't mind if someone asked me if your signal falls into all these specs then it is definitely your modem. you can type in 192.168.100.1 to access a diagnostics page on most modems that will tell you a lot of this stuff but some modems require a username and password that you could probably google and find if you really wanted to. hope this helps!
I am on comcast and have recently encountered a similar issue. When I unplug the vonage device, wait a few seconds and plug it back in, all is well again, for about 24 hours or so. This has to be repeated to return to the speeds I am used to receiving.