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[connection] continued SF bay area problem for me! »
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Morty
Premium
join:2004-09-18

reply to rickten
Re: Davis, CA having problems?

The problem in the Davis CA area, like most area's in CA is that the actual CMTS is over-sold, they push it to the limits and when they do so, the service degrades a lot and completely craps out now and again. Now, seeing as it is your local office to blame for the issue, and as it appears they aren't working very quickly to get it fixed, try writing a two page letter to Comcast corporate relations, if you get enough letters going there they will give a warning to that office, if they don't see any resolution fast, then they will walk in and start chopping heads.

It's happened before, it can happen again.


pokesph
It Is Almost Fast
Premium
join:2001-06-25
Sacramento, CA
clubs:
·Comcast

Ok the tech was just here.. once again they pulled a extra splitter from the line.. (one of there's outside) and this time swapped modems.. speeds did increase a bit, but will see what happens over time. No sig lvls avail on this new modem so I dunno.

Before Tech Visit: 2004-11-20 14:05:15 Speed test @ dslreports-west1.speakeasy 2351/250 kbps

After: 2004-11-20 15:56:50 Speed test @ dslreports-west1.speakeasy 3736/351 kbps

2004-11-20 16:13:16 Speed test @ dslreports-west1.speakeasy 2458/299 kbps
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Merlyn_3D

join:2002-12-10
Sunnyvale, CA


1 edit
reply to pkarlos_76
said by pkarlos_76 See ProfileOkay smarten up..... YOU CAN'T plug MOST cable modems into powerbars of any sorts. Because they already have BUILT-IN protection and doing so screws up the modem. I know this as a Shaw ISP user. The Tech was extrememly right in this case, cable modems can only be connected directly into the socket on the wall. No if ands or buts, as for power backup such as UPS you need one with a socket that doesn't have protection on that socket.

* I know this causes problems from my own personal experiences.


Ok, that is complete and total BS. First off, no one has enough plugs near their computers to actually dedicate one to the cable modem. Second, no, UPS's don't screw up cable modems. Search google, you'll see. Plus, when I had the SAME modem in San Diego with roadrunner cable, I had no problems whatsoever. I plugged that one into a UPS too.

Don't tell me to smarten up. I know what I'm talkin about, and having the modem plugged into the UPS is not my problem; just ask everyone else here in Davis who has connectivity issues.


Morty
Premium
join:2004-09-18

reply to rickten
Yes, powerbars make almost no difference, what is the key is in some cases people's actual line power (the circuit in which the all of the outlets on that line) is over-used. therefore when some appliances kick in like a fridge for example it lowers the power to the cable modem. this causes the modem to lose sync. Very rare. and most homes have dedicated lines for high use appliances like fridges.

Merlyn is completely correct. this issue has nothing to do with premise and everything to do with network infrastructure.


pokesph
It Is Almost Fast
Premium
join:2001-06-25
Sacramento, CA
clubs:
·Comcast

the UPS and other power conditioners are designed to provide clean, constant power to ANY device plugged in to them.. it make no difference what that device is.. A good UPS will provide a constant, set 110V (or whatever) out with input voltages fluctuation from 80 to 150 and provide some protection against power spikes caused by fridges, A/C units and other things that generate a power spike on start up.. Using a UPS on your comp sys is a very good idea not only for power outages, but for general protection.
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lasalle

@dslextreme.com
What a joke!

The guy who came to fix my comcast cable apparently did not even know what a router is.

Next week I am going back to Pro Speed SBC DSL.

Its time to pack our bags and go.


ryanc42

@solisys.net

reply to rickten
I've set up monitoring of my line ( »ryanc.org/cgi-bin/smokeping.cgi?···orld.USA ), and another friend's line (he's on a diffrent node) and have found that they often go down and come back up at the same time. I'd like some more data points on this. If anyone else in davis wants their line monitored, please email me via my contact from at »ryanc.org/index.php?s=9

rickten

join:2002-03-09
Davis, CA

said by ryanc42:

I've set up monitoring of my line ( »ryanc.org/cgi-bin/smokeping.cgi?···orld.USA ), and another friend's line (he's on a diffrent node) and have found that they often go down and come back up at the same time. I'd like some more data points on this. If anyone else in davis wants their line monitored, please email me via my contact from at »ryanc.org/index.php?s=9
what are you using to monitor you line like that? IS that a dslreports feature or a program you setup on your own?


ryanc42

@comcast.net

said by rickten:
what are you using to monitor you line like that? IS that a dslreports feature or a program you setup on your own?

I've set up a program called smokeping on a Debian Linux server I have colocated at work.

It will ping a host and make graphs of statictics about response times and packet loss. See »ryanc.org/cgi-bin/smokeping.cgi?···.Comcast


pkarlos_76

join:2004-08-24
Edmonton, AB

reply to Merlyn_3D
said by Merlyn_3D See Profile:

said by pkarlos_76 See ProfileOkay smarten up..... YOU CAN'T plug MOST cable modems into powerbars of any sorts. Because they already have BUILT-IN protection and doing so screws up the modem. I know this as a Shaw ISP user. The Tech was extrememly right in this case, cable modems can only be connected directly into the socket on the wall. No if ands or buts, as for power backup such as UPS you need one with a socket that doesn't have protection on that socket.

* I know this causes problems from my own personal experiences.


Ok, that is complete and total BS. First off, no one has enough plugs near their computers to actually dedicate one to the cable modem. Second, no, UPS's don't screw up cable modems. Search google, you'll see. Plus, when I had the SAME modem in San Diego with roadrunner cable, I had no problems whatsoever. I plugged that one into a UPS too.

Don't tell me to smarten up. I know what I'm talkin about, and having the modem plugged into the UPS is not my problem; just ask everyone else here in Davis who has connectivity issues.
FACT cable modems have there own built-in surge protection, pluging it into a surge bar screws it up. FACT You have to plug it in directly to the power outlet, I know this from personal experiences. I've had no connectivity issues since listening to what my ISP which is NOT Comcast told me to do.

So, go ahead keep calling Comcast Tech Support, and we'll just keep telling you to powercycle and plug it into the walll. And if your rude or belligerent, we'll warn ya twice and then hang up....on the third time.


pkarlos_76

join:2004-08-24
Edmonton, AB

reply to Morty
said by Morty See Profile:

Yes, powerbars make almost no difference, what is the key is in some cases people's actual line power (the circuit in which the all of the outlets on that line) is over-used. therefore when some appliances kick in like a fridge for example it lowers the power to the cable modem. this causes the modem to lose sync. Very rare. and most homes have dedicated lines for high use appliances like fridges.

Merlyn is completely correct. this issue has nothing to do with premise and everything to do with network infrastructure.
Sorry, several experienced on the job technicians with degrees have told me otherwise.


pkarlos_76

join:2004-08-24
Edmonton, AB

reply to pokesph
said by pokesph See Profile:

the UPS and other power conditioners are designed to provide clean, constant power to ANY device plugged in to them.. it make no difference what that device is.. A good UPS will provide a constant, set 110V (or whatever) out with input voltages fluctuation from 80 to 150 and provide some protection against power spikes caused by fridges, A/C units and other things that generate a power spike on start up.. Using a UPS on your comp sys is a very good idea not only for power outages, but for general protection.
Not if the device has it's own protection system.


JTRockville
Data Ho
Premium,MVM
join:2002-01-28
Rockville, MD
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reply to rickten
Looks like you guys are famous.

said by Beth Curda/Enterprise staff writer, Dec 2, 2004:
Comcast working out Internet service bugs

Some Davis residents who are new subscribers to the Comcast Internet service now available locally have reported problems with their service or brief outages. The company said it is working extra to expand bandwidth to meet high demand for the new service.

In August, as part of an extensive citywide upgrade in equipment and programs, Comcast Cable Communications Inc. made available to Davis residents high-speed broadband Internet service. Demand for the new service has been high, company spokeswoman Susan Gonzales said, and Comcast has had to expand bandwidth to respond to the need.

Customers have reported problems with breaks in connectivity and other interruptions in service.

In some cases, Gonzales said, customers have signed up for one type of service, when another program may fit their broadband needs more appropriately. As Comcast expands bandwidth in neighborhoods, service is interrupted briefly in the process, she said.

"In cases where customers are in new areas of service and they are using bandwidth beyond the scope of their service, it affects bandwidth necessary for that particular area," Gonzales said. "And we are expanding bandwidth throughout the area to meet everybody's needs."

The company monitors the situation daily, Gonzales said. She added that ultimately there will be enough bandwidth to meet everyone's needs and customers will be paired up with the right service packages.

She advised customers who experience other problems to contact Comcast's customer service line.

Jerilyn Cochran, Davis social services administrator and a city representative in ongoing contract negotiations with Comcast, said she has received a couple of calls from residents reporting Internet service concerns.

"I assume ... it's normal to have to work out kinks when they set up a system like this," Cochran said.

Comcast crews also have been busy in downtown Davis, tearing up city streets to install and upgrade cable infrastructure.

Meanwhile, the city's ongoing contract talks with Comcast have hit snags along the way, including funding details and a Comcast offer the city believed did not include enough support for public, educational and government programming.

Steve McMahon, chairman of the city's Telecommunications Task Force, said the negotiating parties are working on more detailed language of their positions in an attempt to understand better the stances. The fact that the parties are looking at draft contracts doesn't mean they have reached an agreement, he said, and big differences still could emerge.

"We are really at a point where we're trying to find out what we think Comcast is proposing and tie down the details of it, and we could have very big differences ... or it's possible that that agreement might put us closer to where we think we'd be willing to go ahead and sign," he said.

City staff involved in the negotiations likely will update the Davis City Council later this month.


pokesph
It Is Almost Fast
Premium
join:2001-06-25
Sacramento, CA
clubs:
·Comcast

I read that as, "OK we screwed up and didn't provision enough bandwidth for our Davis roll-out. We're sorry but you will have to wait until we add more capability to our system before your connection will work. Please pay you bill here."
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Morty
Premium
join:2004-09-18
reply to rickten
Please see my few posts about the CMTS being oversold I think it's at the top of the page. This is nothing new.


pokesph
It Is Almost Fast
Premium
join:2001-06-25
Sacramento, CA
clubs:
·Comcast

said by BBR:
Random fortune (from work)

Carelessly planned projects take three times longer to complete than expected.
Carefully planned projects take four times longer to complete than expected, mostly because the planners expect their planning to reduce the time it takes.

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pkarlos_76

join:2004-08-24
Edmonton, AB

reply to pokesph
said by pokesph See Profile:

I read that as, "OK we screwed up and didn't provision enough bandwidth for our Davis roll-out. We're sorry but you will have to wait until we add more capability to our system before your connection will work. Please pay you bill here."
I read that as oops we forgot about all those BITTORRENT users.


pkarlos_76

join:2004-08-24
Edmonton, AB

reply to Morty
said by Morty See Profile:

Please see my few posts about the CMTS being oversold I think it's at the top of the page. This is nothing new.
Just a FYI,

Each CMTS can hold 80,000 subscribers per unit (This also depends on the DOCSIS Protocal used)...most use DOCSIS 1.0 which is the 80,000 limit. DOCSIS 2.0 can serve more bandwidth to more customers.

LonV

join:2004-05-04
Clovis, CA

reply to rickten
South of you in Fresno/Clovis it's somewhat worse, 3000 / 256 max. Uploads are much slower, depending on the time of day. Since the upgrade a week or two ago, we have to live through forced modem recycling several times a week. That isn't too bad, but now with this recent Comcast upgrade, you're give a different IP every time. The modem no longer recycles to the same IP address. I complained to Comcast, but they tell me there's nothing they can do for me.


Morty
Premium
join:2004-09-18


1 edit
reply to pkarlos_76
said by pkarlos_76 See Profile:


said by Morty See Profile:



Please see my few posts about the CMTS being oversold I think it's at the top of the page. This is nothing new.
Just a FYI,

Each CMTS can hold 80,000 subscribers per unit (This also depends on the DOCSIS Protocal used)...most use DOCSIS 1.0 which is the 80,000 limit. DOCSIS 2.0 can serve more bandwidth to more customers.
It's too bad that the Davis Cal CMTS has way more users then it can hold. From what it looks they're are going to do a split (or are working on it). This is just typical of the California market and has been all the way back into ATTBI (I apologize for swearing). This is the same issue that Sunnyvale had about 2 months prior to Davis. It's a known issue and I am fully aware of how the Cisco uBR10012 works. I do have several degrees of training under my belt, but yes in case anyone else didn't know that it is an interesting fact. However, the problem with most of Cal and in direct Davis is an oversold CMTS.
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Forums » US Cable Support » Comcast » Comcast HSI[connection] continued SF bay area problem for me! »
« this normal?  
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