Re: SB5100 died in Rogers http://www.dslreports.com/forum/r20452405 en Mon, 13 Oct 2008 19:03:36 EDT Mon, 13 Oct 2008 19:03:36 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20585130 sbrook : Yeah, upstream SNR ... I'm on the end of a LONG cable run and nothing can be done. Kraze ... pls see your Instant messages (click on the blinking thing near the Broadband Reports logo.]]> http://www.dslreports.com/forum/remark,20585130 Tue, 03 Jun 2008 16:58:46 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20585050 KraZe : I've seen steady connections with at 52 Tx level... you sure there's nothing else causing that?]]> http://www.dslreports.com/forum/remark,20585050 Tue, 03 Jun 2008 16:46:47 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20584929 sbrook : Soon as you get above 49, things start getting really dodgy depending on the SNR. Around me, Upstream levels of 50+ = no connection.]]> http://www.dslreports.com/forum/remark,20584929 Tue, 03 Jun 2008 16:28:13 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20584897 KraZe : You're right Sbrook, my mistake, I just double checked the numbers... the high end for the TX signal is 54.]]> http://www.dslreports.com/forum/remark,20584897 Tue, 03 Jun 2008 16:22:35 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20582828 sbrook : An upstream (TX) signal as high as 55 dBmV is NOT normal, it's out of spec for most modems. If you get it to work, it's because of really good SNR on the upstream. BUT at that level, that modem will run hot and be subject to premature failure and subject to lots of errors and temp. disconnects.]]> http://www.dslreports.com/forum/remark,20582828 Tue, 03 Jun 2008 10:25:28 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20581969 KraZe : Sorry, late reply...

A TX signal between 35 and 55 is normal

A RX signal between -10 and 10 is normal

Lifespan on most modems is somewhere near 3-5 years, depending on its use. I've seen some die within 2 years, others go as long as 8 and counting...]]> http://www.dslreports.com/forum/remark,20581969 Tue, 03 Jun 2008 03:55:25 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20547002 sbrook : Wouldn't surprise me that they've changed from Moto to SA. It's all about who they can save 50c on!]]> http://www.dslreports.com/forum/remark,20547002 Tue, 27 May 2008 16:29:33 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20546880 jam_bongo : I used to have an SB5100 until an electrical storm fried it (one of the techs who visited us afterwards said the previous installer didn't properly ground the cable outlet) so I went to the Rogers store to replace it, to my surprise he gives us the scientific Atlanta, my only problem with it is that they lock you out of the diagnostic pages, but if you look on-line somewhere there are ways to temporarily get access to those pages anyway (of course Rogers won't tell you how to do it) Do they still give out SB5100's for rent? when I tried to replace the Webstar I kept getting told they no longer carry Motorola's]]> http://www.dslreports.com/forum/remark,20546880 Tue, 27 May 2008 16:08:26 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20546210 sbrook : Yes, it can handle 63 users but it's referring to a strange scenario ...

You have 63 users connected via a hub, switch or router (without a DHCP NATP server inbuilt) to the modem. The modem is connected to the cable CMTS and the cable operator assigns you 63 different IP addresses (yeah, as if we'll do that on Rogers! But that's a different matter)

Now, if the cable CMTS connection is lost, the modem can hand out 63 local IP addresses (the 64th is the .0) so that your internal network can continue operation until cable resumes.

Hence the 63 user scenario.

IF you're connected instead by a Router with DHCP NATP (like most domestic cable routers) your Router assigns the IP addresses which remain, even during a cable network failure and your local net will carry on even though your external net will drop. The limit of users in this case is simply the number that the router can cope with. As far as the modem is concerned, it has one user ... the router.]]> http://www.dslreports.com/forum/remark,20546210 Tue, 27 May 2008 14:05:04 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20546139 elwoodblues : Looks like my SB5100 is Docsis 2.0 complaint, so I'm good for awhile

Looking at the specs for the 5101 and 5102, they claim it can handle 63 users (but you need a hub or router).

What the hell is that? How does it establish that you've got 64 users connected and says NO WAY]]> http://www.dslreports.com/forum/remark,20546139 Tue, 27 May 2008 13:53:53 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20533187 sbrook : The Terajets certainly had their issues ... and usually had compatibility issues when the CMTS units were upgraded. That was why Rogers stopped distributing them shortly after getting them. There was a major upgrade and all the people with TeraJet modems were essentially offline for over a week as Terayon worked out the firmware glitch that caused them to cycle on and off line.]]> http://www.dslreports.com/forum/remark,20533187 Sat, 24 May 2008 10:47:42 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20533156 sm00nie : I wouldn't say the tj615 was the worst modem, but my upload was about half of what it should have been. Other than that it was pretty stable. It lasted a good 2 years, before rogers discontinued it about a month ago. Now I'm using the scientific atlanta and I"m able to reach my advertised upload speed! (express)]]> http://www.dslreports.com/forum/remark,20533156 Sat, 24 May 2008 10:33:40 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20472480 anon : yes, you're right - DOCSIS 1.1 is about to reried by end of Jun ( if I remember well). Your Toshiba modem and Terayon TJ615 I would concern as worst ever made modems.

tj]]> http://www.dslreports.com/forum/remark,20472480 Mon, 12 May 2008 21:17:58 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20462119 anon : I had the Doc1.1 Toshiba PCX2500 modem... the thing stopped working today, all morning the cable link was just flashing rapidly no matter what I did.

Within 5 mins a replacement was in (live close to a store) -got a SA DPC2100R2

Everything looks good, I originally got the replacement notice early December so I guess they are phasing out the old stuff]]> http://www.dslreports.com/forum/remark,20462119 Sat, 10 May 2008 16:14:56 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20452986 HiVolt :
said by sbrook See Profile :

the problematic webstar was the DPX2100 if memory serves
Ah, you're right... The model was similar enough to have me worry. :) I remember some friends having those with lots of issues, especially when uploading larger files or seeding torrents, they would reboot themselves constantly.
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GOLF LEAFS GOLF!]]> http://www.dslreports.com/forum/remark,20452986 Thu, 08 May 2008 17:35:47 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20452405 sbrook : the problematic webstar was the DPX2100 if memory serves]]> http://www.dslreports.com/forum/remark,20452405 Thu, 08 May 2008 15:54:22 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20451693 mental_guy : I have Scientific Atlanta DPC 2100 R2 for about 1.5 years now. I think it is a very sturdy and heavy-duty modem. Even though it doesn't look as attractive as Motorola, it has very thick plastic and manages heat no problemo. Since I replaced my cable to RG6 - no sync loss, unless there is maintenance on the line (Rogers van on the bottom of my building). I like this modem a lot.

I know everybody here likes motorolas, but hey, popularity is not the key. I recently helped someone with their DSL line and they had SpeedTouch 516 V6 - the one everybody praises in Teksavvy forum. The plastic there is very thin (my modem is like a tank compared to it) and the heat generated almost melts it. The guy is afraid to leave it ON all the time, so he turns it ON and OFF when he needs it. My SA is on 24/7/365 and is barely warm.

BTW, those top buttons Signal, Status and Log are locked, but when the modem loses sync it opens them up, so you can check the log and what exactly is lost (in my case it is usually upstream).
]]> http://www.dslreports.com/forum/remark,20451693 Thu, 08 May 2008 13:22:33 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20451135 HiVolt :
said by elwoodblues See Profile :

Anybody else have a lifespan on this modem? Mine is pushing 3years also, and since I OWN it, I don't want to run into a situation where it dies and I have look for another one.
The SB5100 we had here lasted almost 3 years. I looked at the original work order for the install and it was May 30, 2005.
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GOLF LEAFS GOLF!]]> http://www.dslreports.com/forum/remark,20451135 Thu, 08 May 2008 11:48:17 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20450994 elwoodblues : Anybody else have a lifespan on this modem? Mine is pushing 3years also, and since I OWN it, I don't want to run into a situation where it dies and I have look for another one.]]> http://www.dslreports.com/forum/remark,20450994 Thu, 08 May 2008 11:20:16 EDT Re: SB5100 died http://www.dslreports.com/forum/remark,20450750 HiVolt : Hey, I can access this one's status page even when it's connected. The SB5100's status page would only show before it acquired signal.

Are these numbers decent?
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GOLF LEAFS GOLF!
Click for full size
]]> http://www.dslreports.com/forum/remark,20450750 Thu, 08 May 2008 10:32:57 EDT SB5100 died http://www.dslreports.com/forum/remark,20450430 HiVolt : The SB5100 I had at work on the 8/1 service for 3 years croaked. The ethernet just burned out. I went to a Rogers store, and got a replacement, but is a Scientific Atlanta DPC-2100R2 because they had no Motorolas in stock. I remember they used to be terrible a few years ago with a number of issues.

Have these gotten better, I assume this is being an "R2" its a second version, hopefully improved? It seems to work ok, speedtests are fine also.


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GOLF LEAFS GOLF!]]> http://www.dslreports.com/forum/remark,20450430 Thu, 08 May 2008 09:18:47 EDT