Re: Serious problem with Comcast and Linksys in Comcast HSI http://www.dslreports.com/forum/r8172643 en Wed, 25 Nov 2009 04:32:11 EDT Wed, 25 Nov 2009 04:32:11 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8197635 ravenous28 : everything works fine...the whole thing was comcast...figures.]]> http://www.dslreports.com/forum/remark,8197635 Fri, 10 Oct 2003 22:40:45 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8197134 Descent : try hooking only 1 computer to the router and see if speeds are any better.
--
www.cstrike-planet.com]]> http://www.dslreports.com/forum/remark,8197134 Fri, 10 Oct 2003 21:31:14 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8197133 Descent : maybe someone installed kazaa or another file share program on one of the computers and thats eating all your bandwidth? maybe your network is compromized and part of a DDOS net?
--
www.cstrike-planet.com]]> http://www.dslreports.com/forum/remark,8197133 Fri, 10 Oct 2003 21:30:49 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8196225 halfband :
said by ravenous28 See Profile:
Is it possible to update your cable modems firmware?
If needed the firmware is updated by comcasts system to the latest version that they use when your modem connects. There is nothing you can do to change the firmware version.
--
Registered Bandwidth Offender #40812]]> http://www.dslreports.com/forum/remark,8196225 Fri, 10 Oct 2003 19:35:35 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8196045 Baldy18 : Well the SNR is toward the low side and the downstream power is toward the high side. Nothing really out of spec but combined I would guess it may be possible to see problems during certain weather condition. I wouldn't worry too much about them though if others in the area are see the same activity you are and when they report good service yours is also running fine.]]> http://www.dslreports.com/forum/remark,8196045 Fri, 10 Oct 2003 19:11:58 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8195783 ravenous28 : Everything is still working fine, it must of been comcast...

Is it possible to update your cable modems firmware?

?]]> http://www.dslreports.com/forum/remark,8195783 Fri, 10 Oct 2003 18:34:07 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8193560 halfband : TroyL65 in this thread posted a set of signal levels with the same N/A for downstream. »Intermittent Internet
Must be something in that models firmware.
--
Registered Bandwidth Offender #40812]]> http://www.dslreports.com/forum/remark,8193560 Fri, 10 Oct 2003 13:41:16 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8191928 JTRockville : In case you're not familiar with the terms....


Terms from the Cable 
Modems and Wiring 
Issues FAQ             Terms from your Modem Diagnostics
----------------       ---------------------------------   
Downstream Power   =   Forward Path Receive Signal Strength
Downstream SNR     =   Forward Path SNR
Upstream Power     =   Return Path Power Level
Upstream SNR       =   Not reported by your modem

It's really odd that your modem reports "N/A" for the Downstream Power.]]> http://www.dslreports.com/forum/remark,8191928 Fri, 10 Oct 2003 10:14:32 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8191838 jansm38 : Check here for an FAQ on modem signals:
»Cable Modems and Wiring Issues »What kind of signal levels do I want on my cable modem?]]> http://www.dslreports.com/forum/remark,8191838 Fri, 10 Oct 2003 09:59:52 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8190664 ravenous28 : so far so good guys on my speed all day other then this morning... i have some cable modem stats for anyone that understands and can explain to me what this stuff means and if my signal is bad or not ect...
Click for full size
]]> http://www.dslreports.com/forum/remark,8190664 Fri, 10 Oct 2003 02:29:13 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8189329 ejjinc : I did that and same slow speed during the day now it is 6 times faster (2972) what it was this morning and afternoon.
Maybe, it is Comcast working on the lines and equipment but also racks me is their techs acting like you are an idiot, "Everything fine from our end, send TECH and charge you"]]> http://www.dslreports.com/forum/remark,8189329 Thu, 09 Oct 2003 22:33:37 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8188032 Baldy18 :
said by comcast tech n pitt:
I have the same router and have no problems, did you try the one thing nobody tries before I go to a trouble call? That 1 thing is plug the pc directly to the modem and see if it fine.


Try reading the previous posts in the thread before adding anything.]]> http://www.dslreports.com/forum/remark,8188032 Thu, 09 Oct 2003 20:10:50 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8187989 anon : I have the same router and have no problems, did you try the one thing nobody tries before I go to a trouble call? That 1 thing is plug the pc directly to the modem and see if it fine.]]> http://www.dslreports.com/forum/remark,8187989 Thu, 09 Oct 2003 20:07:15 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8187933 ravenous28 : Ok, all of my speeds have been pretty good all day so far. I'm going to be posting my cable modem stats for my RCA modem and then maybe someone can help me from there to tell me if my signals are bad because I'm really not familiar with reading the signal data. I should have this posted within a few hours.]]> http://www.dslreports.com/forum/remark,8187933 Thu, 09 Oct 2003 20:00:30 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8187550 Baldy18 : If the slow downs only happen during the day it could be that work is being done on routers or whatnot in your area an the ones not being worked on are being overloaded. If the slow downs only happen at afternoon/evening hours then possibly you are being slowed down by peak hours and all those kids getting home from school and downloading music. If it happens all the time I suggest you post your signal levels if you can get them from your modem or call Comcast for a service call.]]> http://www.dslreports.com/forum/remark,8187550 Thu, 09 Oct 2003 19:14:42 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8187542 sortofageek :
said by ejjinc See Profile:
... unless you change the switch on the back of the Linksys going from straight thru to cross over will surely stop all activity.


I have the Linksys BEFSR41, Version 2, router. There is no switch on the back of mine.


--
Team Helix Forum - Join Us?]]> http://www.dslreports.com/forum/remark,8187542 Thu, 09 Oct 2003 19:14:05 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8187044 rody_40 : going from a com 21 to a dcm is kind of like going from one junk vw to another. i wouldnt trust either.]]> http://www.dslreports.com/forum/remark,8187044 Thu, 09 Oct 2003 18:22:36 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8186717 ejjinc : I have been getting the same results. I am in Pittsburgh and they are testing 3000 kbps (someone complained, I stated KB, I knew what I meant) or already installed the upgrade if that is what you call it. The speed has been less than 500 kbps you can check in the 15209 zip code and look at my results today from DSL Reports. I called Comcast 5 times and each time the reboot modem/reboot computer answer and of course clean out the cache. I also use a BEFSR81 for the firewall as limited as it is. I notice the problem more after I down load a bunch of data from the net Microsoft or one of my friend's salesmen down load a 50MB file from my computer because they can't get the data over a Verizon DSL line to their computer in Ohio over a dial-up. I just want something approaching 1000 kbps. I have replaced my BEFSR41 with a BEFSR81 and had a Com21 and put in a RCA DC235R same results. SEEMS ODD, one of us may have hardware problems even two but statistics leads me to believe that it is not everyone's hardware, common thread COMCAST, maybe! Oh yes, I changed out my cables and it had no effect, and unless you change the switch on the back of the Linksys going from straight thru to cross over will surely stop all activity.]]> http://www.dslreports.com/forum/remark,8186717 Thu, 09 Oct 2003 17:43:36 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8186276 ravenous28 : Okay now everything with my speeds have been working again all day...hell if I know or comcast for that matter... Someone suggested to me that it might be the signal coming in the house...and that when you hook up into a router the signal gets faded and might not be powerful enough so i should have to have a tech come out to test the line? ...i dunno about that or not...

All i know is its running pretty good now...and im going to let it go all weekend to see what happens...if it does it again im going to be getting a new router...]]> http://www.dslreports.com/forum/remark,8186276 Thu, 09 Oct 2003 16:54:57 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8184085 BriGuy89 :
said by telcc:
Just goto the store and buy a new one and return yours in the box. Assuming its in new condition.


Two good reasons not to do this:
• It's unethical
• It's illegal]]> http://www.dslreports.com/forum/remark,8184085 Thu, 09 Oct 2003 12:27:28 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8183511 damox :
said by ravenous28 See Profile:
So what happens if I still after buying another router and getting another cable modem experience the same problems from comcast? You think they will have to send a tech out to test the lines outside and see if maybe something is wrong with the cable outside?

Well as long as you getting good performance without the router, I doubt they would send anyone out. They'd probably try and sell you the "Home Networking" package. I assume you have the regular package. The other factor is that it happen all of a sudden; it was working fine then suddenly it starts screwing up.

I have an RCA (Thompson) DCM305 modem and a Linksys befsx41
router/firewall. No problems so far, but . . . who knows what could happen.

said by ravenous28 See Profile:
If a new cable modem from comcast don't work with a new dlink router... Looks like i just might be out of luck...cause comcast will just say our service is fine just pay your bill.


Again they'd probably point to their new home networking package, assuming it's available in your area. If I were you, I might try sticking with a Linksys, just for continuity. It wouldn't take you long to know whether it is working or not. You could always return it. People have problems with D-Link just as they do Linksys.

said by ravenous28 See Profile:
Then perhaps I should get a new ISP...who knows....i really like comcast and all...but when stuff like this happens it kinda makes me wonder...im sure you all feel the same way.


Hopefully the new router will work. ]]> http://www.dslreports.com/forum/remark,8183511 Thu, 09 Oct 2003 11:10:34 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8183171 ravenous28 : true that, I hear you. Maybe i should just go buy a dlink 604 or 704 and try it for a month to see what happens. Atleast I would know that if im getting the same problems with that router then I could just return it and then I'll get another cable modem from comcast then try it again...

So what happens if I still after buying another router and getting another cable modem experiance the same problems from comcast? You think they will have to send a tech out to test the lines outside and see if maybe something is wrong with the cable outside?

If a new cable modem from comcast don't work with a new dlink router... Looks like i just might be out of luck...cause comcast will just say our service is fine just pay your bill.

Then perhaps I should get a new ISP...who knows....i really like comcast and all...but when stuff like this happens it kinda makes me wonder...im sure you all feel the same way.]]> http://www.dslreports.com/forum/remark,8183171 Thu, 09 Oct 2003 10:28:58 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8183099 damox : Yes that is frustrating . . . man I feel for you. Sorry that you are having such a tough time. Any possibility you could borrow another router for a night? It would at least help pin down the problem. Either that, go out and buy one and if it turns out you don't need, return it! ]]> http://www.dslreports.com/forum/remark,8183099 Thu, 09 Oct 2003 10:19:51 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8183023 ravenous28 : okay? the crossover cable worked, but get this...now im getting terrible speeds again like only 30kbps when last night i was getting 400... i don't know wtf is going on. This is pissing me off...one minute it works good, the next its crawling...then its going fast again...am i leaning towards comcast at fault...should i just go all new equipment? This has to be one of the aggrivating things ever! one minutes its the router, next its the cable modem, and next its the cable. Unless comcast has something going on in Pittsburgh Pa. So here I am again, just my luck back to point 1 again. More trail and error. I swear something is telling me it something going on with comcast and thier speed update they promised to double for everyone...I heard 2 other ppl in Pittsburgh I know getting really terrible speeds with comcast while all this other router/cablemodem/cablewire stuff is going on with me. Would comcast accually ever admit that maybe its their fault...no, comcast never has problems right...They are a huge company, i'll call the tech and he'll say ..." ohh you know we don't support home networking!" And i'll be like yeap. And next he'll tell me im getting a good ping through you modem .."WHY DON'T YOU POWERDOWN" doahhhh man this truly sucks none the less. Why can't they just give half of the bandwith they promise? Atleast i wouldn't notice that much...
:(]]> http://www.dslreports.com/forum/remark,8183023 Thu, 09 Oct 2003 10:10:31 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8182801 damox : For what it's worth, the user guide for "Version 2" of the befsr41 does discuss using either a straight thru or crossover, and seems to indicate that there is a switch. The user guide for Version 3, however does not even discuss this issue. I did not check the CA version of the befsr41. I have a befsx41 (of course that's a totally different router but I would assume that most Linksys routers are fairly standard); I have always used a crossover cable between any of the routers that I've used, and my cable modem.

For the sake of clarification, a crossover is wired on one end as

green/white, green, orange/white, blue, blue/white, orange, brown/white, brown

the other end would be:

orange/white, orange, green/white, blue, blue/white, green, brown/white, brown.

A crossover cable should work.
[text was edited by author 2003-10-09 09:40:06]
]]> http://www.dslreports.com/forum/remark,8182801 Thu, 09 Oct 2003 09:38:39 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8182707 ravenous28 : Hey I'm telling you its a crossover cable going from my rca dcm315 cable modem to my linksys befsr41 router, no joke. Im looking at it now it says crossover all over the cable and I know its a crossover cause i bought it. So im not confused. As far as a switch on the back of the router, I'm not seeing one. Hey, if you claim it doesn't work come to my house and see for yourself. All i know is it was working with a straight for about 2 months and wasn't anymore, and now is working with a crossover perfectly fine. I mean what you think im doing lying about this problem from the beginning? you want me to take a picture of my setup to show you? you can even seen the little lettering on the crossover cable for yourself. Look im just trying to help you here, don't say im lying. Thanks.]]> http://www.dslreports.com/forum/remark,8182707 Thu, 09 Oct 2003 09:22:01 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8182293 jansm38 : Isn't there a switch on the back of the router for either crossover or straight through? I seem to remember my SR11 had one. Could the switch have been "accidentally" moved?]]> http://www.dslreports.com/forum/remark,8182293 Thu, 09 Oct 2003 07:45:48 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8181028 anon : CROSSOVER CABLE?
No way!!!!
Anyway I tried it and I got zero - no communication between the router WAN port and the cable box.
I'm guessing what you think is a crossover cable isn't. Have you checked the wiring colors versus the pin connections for confirmation? Maybe you had a faulty cable or contact and replacing the cable or cleaning the contact with the insertion force has got you up and running. Its not the first time I've had a cable go down on me and in my case it was a cable that was left plugged in and never moved, twisted or abused. It was wired into a loom and just died on me. Your cable has to be a standard cable it couldn't physically be a cross-over. The only way you can be sure is looking at the color code of the wires at each plug end.]]> http://www.dslreports.com/forum/remark,8181028 Thu, 09 Oct 2003 00:27:12 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8180787 ravenous28 : someone said to me that this problem might be...

they may have uploaded firmware recently which broke the media autosense options

???]]> http://www.dslreports.com/forum/remark,8180787 Wed, 08 Oct 2003 23:54:51 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8180337 ravenous28 : Okay heres the deal guys. I got my problem solved!! and for the last guy that posted this should also try this too. All I had to do believe it or not was use a (crossover cable) for the modem going to the router. Period. The second I tried this boom everything works great! Everything. I just am so relieved that this is/was a stupid problem. But heres a question that comes to mind though. Why? Why is it that now after 2 yrs of using this router I need to use a crossover instead of straight when it was working before? Could this be an issue with comcast? Im totally lost one exactly why. All I know is everything works. And it BETTER STAY that way!! if anyone else was having this problem try what I did, and see what happens. If you still can't get it to work you got another problem...Good luck keep posting away thank you all for your help...much appriciated.]]> http://www.dslreports.com/forum/remark,8180337 Wed, 08 Oct 2003 23:03:32 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8179939 anon : HOLD IT!!!!
Before you all start rushing off buying new hardware to connect to the Comcast network because your speeds are down, you guys need to know that I have exactly the same problem as your Linksys router problem except I am using a Netgear router. The problem IS IDENTICAL. Suddenly for no reason at all my download speeds have dropped in the last week to 56K or 270K depending on which news server I am connected to. Everything has been perfect for 2 years on a sophisticated home network of 4-5 PCs using a switch and the Netgear cable router. If I reboot the Motorola cable modem box I also get the speed back for just 15 seconds and then it collapses. I tell you there is something very fishy going on here. I was starting to think it was a sudden increase in traffic with new users being connected but on reading your problem with the Linksys gear I'm thinking Comcast are f-----g with some of their customers]]> http://www.dslreports.com/forum/remark,8179939 Wed, 08 Oct 2003 22:19:17 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8179858 halfband :
said by ravenous28 See Profile:
why are you saying a switch
If you had one available, it does the same thing the hub you tried does. It fixes the port negotiation from the modem to the wan port, but is a just bit faster than a hub.
It could be voltage, as in a poor power supply, but it is probably better to get one of the $29 after rebate netgear routers (3 year warranty vs linksys 1) than it is to find another power supply.
It is not a crossover cable problem. If it was you would not have any connection at all.
You can try cloning you pc mac into your router if you like (instruction can be found in the manual or on linksys web site), it is not hard. Since it works fine with the hub between the modem and router, I am sure changing the router or modem will fix the problem.
Good Luck
--
Registered Bandwidth Offender #40812]]> http://www.dslreports.com/forum/remark,8179858 Wed, 08 Oct 2003 22:10:16 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8179805 Baldy18 : There have been problems in the past with modems that have 100mbps ethernet not auto-detecting 10mbps WAN ports in some routers. If you went from the modem to a 10/100 switch to the router the switch can communicate at 100mbps with the modem and 10mbps with the router and eliminate the auto-detection problem. It would also explain why it works through the uplink port and not the WAN port because most likely the WAN port is 10mbps and the uplink port is 10/100mbps. Others know more about this than I do and could have a better explanation of how it works and if it applies to your case.]]> http://www.dslreports.com/forum/remark,8179805 Wed, 08 Oct 2003 22:05:00 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8179636 ravenous28 : okay im here and im about to do my testing...why are you saying a switch...this linksys befsr41 has a built in switch...i'll post my results here in a little bit...by the way, would it have anything to do with voltage by anychance on the cable modem or router? just a thought...i'll be back with my posts in a little bit. ]]> http://www.dslreports.com/forum/remark,8179636 Wed, 08 Oct 2003 21:48:51 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8179595 nasadude : routers die.

I had a linksys router that croaked after one year; I think my neighbor had one that went bad too. When the current one dies, I'm trying another brand.]]> http://www.dslreports.com/forum/remark,8179595 Wed, 08 Oct 2003 21:44:14 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8179206 Baldy18 : I think the post by Halfband is probably correct. Try putting a switch between the two and if it works that should confirm the problem. I think that a different modem should fix the problem.

I personally have the Linksys BEFW11S4 router with the latest firmware (have updated it several times without any problem) but I have a Linksys modem and a Linksys switch after the router and have never had any problems with my configuration.
[text was edited by author 2003-10-08 21:17:30]
]]> http://www.dslreports.com/forum/remark,8179206 Wed, 08 Oct 2003 21:07:06 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8178060 ravenous28 : alright well, I still have to do some more testing on it tonight. I will try the crossover cable tonight to see if that works coming from the cable modem to the router.(i don't see why that would make a difference since it worked with a straight cable for 2 months) but i will try it. Also about this mac cloning stuff. I not familier with it, could someone explain to me what to do to try to clone it to test my problems? If i can't this thing to work with the cable modem, Im going up to comcast tomarrow morning and getting a new cable modem something different then that rca to try again. So if someone could post how to test for this cloning thing or whatever to get my router to work that will be great. I will post my results in about 4 hrs from now and keep you guys updated. Thank you so much seriously for all your help everyone.]]> http://www.dslreports.com/forum/remark,8178060 Wed, 08 Oct 2003 18:57:59 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8177428 anon : Just goto the store and buy a new one and return yours in the box. Assuming its in new condition.]]> http://www.dslreports.com/forum/remark,8177428 Wed, 08 Oct 2003 17:47:47 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8177046 Capt_video : I also had a problem like this and it was heat related. Whenever I started fooling around with the router, I would move it aside so that I could get to the connections. Doing this took it off the top of the modem and it cooled off enough to start working. I just took my switch, modem and router and stacked them the long way so heat generated by each one went up and not sideways. Have not had a problem since.

Just another idea.]]> http://www.dslreports.com/forum/remark,8177046 Wed, 08 Oct 2003 17:02:57 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8176526 jansm38 : You could also try to clone the Mac of the PC since the problem does not occur when the modem is connected directly to the PC. ]]> http://www.dslreports.com/forum/remark,8176526 Wed, 08 Oct 2003 16:04:24 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8176047 pnh102 : I have BEFSR11 router (the same kind as yours, but with only one port) with the 2nd to latest version of the firmware that is about 5 years old and I experienced the same kind of problems when I changed the external WAN interface's MAC address to something other than the factory default. When I disabled the MAC address cloning on the WAN side, everything worked fine.
--
The tobacco industry is more respectable than the telemarketing industry.]]> http://www.dslreports.com/forum/remark,8176047 Wed, 08 Oct 2003 14:58:53 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8175663 sortofageek : Are you using a straight-through or crossover ethernet cable between the modem and router?

Long shot since you say it was working before and now is not, but this is what happened when I first set up with the RCA 235 modem and the BEFSR41 router. After trying everything I could think of, finally read the modem manual and discovered I needed a crossover cable between modem and router. Problem solved.
--
Team Helix Forum - Join Us?]]> http://www.dslreports.com/forum/remark,8175663 Wed, 08 Oct 2003 14:09:23 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8175516 99664227 : Go buy another router. There only $40-$60 bucks now.
Problem solved.]]> http://www.dslreports.com/forum/remark,8175516 Wed, 08 Oct 2003 13:48:37 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8175484 halfband : Sounds like the RCA modem has a 10/100 port that is not autodetecting the linksys 10baset WAN port correctly. Swap routers, or swap modems, or insert a switch between the modem and router and things should work.
--
Registered Bandwidth Offender #40812]]> http://www.dslreports.com/forum/remark,8175484 Wed, 08 Oct 2003 13:43:55 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8175292 ravenous28 : okay and heres the verdict... the linksys befsr41 router works! but only now on adephia... so wtf? ... it ain't working on comcast now all of a sudden? my wan port works perfectly here with this router and my speeds are really good...but when i go to hook it up to a comcast cable modem speeds are slow... so whats the next step here? could it be that the router itself is having problems communicating with rca cable modem that comcast gave me? its gotta be! theres no other reason for this...its gotta be the rca 315 or whatever modem...

About 2 months ago i went up to comcast to get another cable modem due to haveing problems with an old surfboard on...nothing major...my router was working 2 yrs prior...then comcast gave me this rca d315 cable modem....it worked perfectly fine with the router until about 4 days ago. So this is proving to me that its on comcast's end of where the problem is. I guess im going to have to go back up to comcast and get another cable modem? if so what one? and if it aint the cable modem or the router...then it has to be comcast not allowing me to hook up this router. Should i call and complain? what would you ppl do? please help thank you all yet again...]]> http://www.dslreports.com/forum/remark,8175292 Wed, 08 Oct 2003 13:22:50 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8174543 J D McDorce : One other possibility is that something in the configuration for the router is hosed, since it sounds like it is working okay as a "switch" (uplink port), but not as a router. When you reset the router, which method did you use?
said by »ftp://ftp.linksys.com/pdf/befsr11_befsr41ug.pdf :
The Reset button can be used in one of two ways.
1. If the Router is having problems connecting to the Internet, press the Reset
button for just a moment with a paper clip or a pencil tip. This clears up any
jammed connections, and is similar to pressing the Reset button on your PC
to reboot it.
2. If you are experiencing extreme problems with the Router and have tried all
other troubleshooting measures, press the Reset Button and hold it down
until the red Diag LED on the front panel turns on and off completely.
This will restore factory defaults and clear all of the Router’s settings, including
settings such as IP addresses or a new password.
]]> http://www.dslreports.com/forum/remark,8174543 Wed, 08 Oct 2003 11:43:10 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8173989 Crackshot : To be honest, I have never had anything but nightmares when flashing Linksys devices. I all but killed my BEFSR81 once, thought it was fried.]]> http://www.dslreports.com/forum/remark,8173989 Wed, 08 Oct 2003 10:28:48 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8173833 ravenous28 : okay guys heres some more trail and error with this linksys befsr41 router and comcast..

I really think the wan port is shot. When i test a labtop and i go from the cable modem to the wan port i get slow speeds, but when i go from the cable modem to the uplink port on the linksys i get my speeds back.. Sound strange? I tested this about 10 times this morning, and no matter what i do if i am going through the wan, im getting messed up speeds. I tried to reset and everything, Looks like i have no other choice then to buy a new dlink 704 router today... :( ..im left with nothing to believe except the wan port is messed up... just going to check it on adelphia powerlink to make sure, but either way...it shouldn't be going under 1kb on a download if im going through the wan.

But also, when i try this... i go from the cable modem to the hub then from the hub to the wan...it seems to work but that is defying the point of using the router. Something ain't right with the router wan working straight from the cable modem...leave me some feedback if you can otherwise i'll just go pick up a new router tonight if all else fails.. thanks ]]> http://www.dslreports.com/forum/remark,8173833 Wed, 08 Oct 2003 10:06:38 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8173455 crsgardner : I have had problems with Belkin, LinkSys and SMC wireless routers (which use pretty much the same chipset) on Comcast. It would randomly lose connection. Strangely enough, the MS MN-500 router I bought NEVER loses connection (it's also on the official "Xbox compatible" router list, one of the reasons I bought it).]]> http://www.dslreports.com/forum/remark,8173455 Wed, 08 Oct 2003 09:05:11 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8173374 ravenous28 : thanks guys for replying. I really don't know what the problem is, but as soon as i put anything through it the speeds deminish. Could be from a storm, I'm not sure though...lol... all i know is that it don't work. So im going to take this router over my other house and try it with adelphia powerlink. If it works then I know its something with comcast. If it doesn't work, then its time for me to get a dlink 604 or 704 router from bestbuy. The thing I'm worried about is wondering if comcast is doing this on purpose or its on thier end. Its very hard to tell, but i still just think its the router. When i hit reset this one time on the router, I got my speeds back for about 30 seconds and then i lost it and was getting 56k speeds... Im going to do somemore testing on this issue now. If you have anymore infomation for me please post! thank you so much.]]> http://www.dslreports.com/forum/remark,8173374 Wed, 08 Oct 2003 08:48:23 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8173067 pgoelz : Just a shot in the dark...... check the grounding on all computers connected to the router. I don't know if there is a grounding conductor in the ethernet cable and if not, there could be sufficient ground potential difference between two machines to exceed the common mode input voltage of the chipset at either end. Mild cases might cause data disturbances and serious cases could blow the chips.

Any lightning storms in the area around the time the system started acting up? I had a close strike take out two ports of my router and a NIC. No other damage to anything else in the house.
--
Paul Goelz, Rochester Hills, MI
Model Helicopter, music and astronomy pages:
http://pgoelz.com]]> http://www.dslreports.com/forum/remark,8173067 Wed, 08 Oct 2003 07:19:46 EDT Re: Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8172643 TheChosenOne2 : If the problem disappears on every computer that you directly hook the cable modem up to, it's definitely the router. You've already said you tried upgrading it's firmware so I won't suggest that. I'm assuming you've tried a different ethernet cable between the router and the cable modem? A bad cable would do that too. If replacing the cable with a known good ethernet cable doesn't work either, the router is probably hosed. Time to get a new one.]]> http://www.dslreports.com/forum/remark,8172643 Wed, 08 Oct 2003 03:39:46 EDT Serious problem with Comcast and Linksys http://www.dslreports.com/forum/remark,8172328 ravenous28 : okay this is getting really stupid... I have a linksys befsr41 router and its been running perfectly fine for like 2 yrs. This whole week i've been noticeing that my speed was really slow, so i figure ahh comcast again just wait it out. Wrong. For some strange reason, When I try to hook anything up to this router (anything) i tried like 10 labtops and 3 pc, my connection speeds go down to like 56k speeds seriously. But if i go directly from the cable modem to the pc im good speed again. Is something going on that i don't know about? I had everything set up perfectly for the last 2 yrs with all my port forwardings and everything and now this router isn't working with comcast. I tried just about everything you might throw at me like resetting the router, updateing the firmware ect. I have lots or pc's here to test so i don't understand exactly whats going on. Like i said, its fine if i connect everything to the router, its not like all the devices work, they are all crawling for bandwith. So right now I disconnected the router and have my hub hooked up running 3 pcs and everything is fine. Also, one time i resetted my router and my speeds came back for like 30 seconds, (i was all happy) until...errr i lost em again...its gotta be the router? or is it comcast and something with mac address's now....can someone please help me. my email is dfp42@comcast.net if you can't post...thanks.]]> http://www.dslreports.com/forum/remark,8172328 Wed, 08 Oct 2003 01:51:17 EDT