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JustAnITGuy

@hfh.edu
reply to Body Count

Re: buying own cable modem

I had the CM100 for about 4-5 years on WOW, previously in Berkley, MI, and just now moving to Rochester Hills, MI. I am not sure of the version of my CM100, but I bought it from NewEgg for $20 as a refurb, so I was really happy with that price. I will check the firmware version on that unit tonight, as maybe I had a later version. The firwmare on my DPC3010 is d3000-v302r125561-120727a.bin and has been flawless so far. They might have applied the wrong default config file to your modem which might have been your issue, as technically, any DOCSIS 2.0 modem should handle ALL conections up to 38/27 as per the DOCSIS 2.0 spec.


JustAnITGuy

@wideopenwest.com
Just got home from work - the hardware version of my CM100 is v54.0, and the software version is 0.0.6.13170.

baess

join:2011-01-28
reply to JustAnITGuy
said by Anon80:

They might have applied the wrong default config file to your modem which might have been your issue, as technically, any DOCSIS 2.0 modem should handle ALL conections up to 38/27 as per the DOCSIS 2.0 spec.

Making sure your own modem is configured correct is many times an issue. It took help here to get several SB6120 (and similar) configured correct. Just calling CS doesn't work many times.

Also it has to be a "supported" modem. Are both of those Ciscos supported?
My old DOCSIS 2.0 Moto supposedly wasn't supported anymore. Since I was having issues I bought the same modem WOW uses, assuring it would be supported/configured correct.


JustaAnITGuy

@wideopenwest.com
reply to JustAnITGuy
Just releasing we kinda strayed away from the real subject of the thread, and I don't wanna thread steal. So...

...WOW does NOT post their list of approved modems anymore, however, you can ask them via the phone if you have a question about a specific modem, but remember, you may get differ answers, as not all the techs know as much as the next one. For starters, a DOCSIS 2.0 modem will be perfect for the 15/1 and lower tiers, but will work decently on the 30/3 plan, but you may not get full speed due to the single channel. If you go with the 50/5 plan, you will definitely need a DOCSIS 3.0 modem.

ARRIS and Motorola are now the same company essentially. The ARRIS line is the corporate line, and the Motorola line is the consumer line. Both of these are great units. Cisco is the other top brand for modems, and any of these three make great devices. The other brands are either cheaper or not in the field enough to make a solid judgement.

If you are buying a modem, I would suggest a DOCSIS 3.0 modem, as they can be had for almost the same price as the older DOCSIS 2.0 modems. For example, I just purchased my Cisco DPC3010 (8x4)1 month ago for $35 shipped off of eBay, and a brand new unit would cost $60-$100 depending on sale and store. The Motorola SB6120 (4x4), SB6121 (4x4), SB6181 (8x4), and SB6580 (8x4) are all great units. I would personally choose the SB6181 out of that list, as I prefer to use my own wireless router, and I would not want to be limited to the 4 downstream channels of the SB6120/SB6121. HOWEVER, if you can find a great sale on a brand new unit, or a great price on a good used one, that will be the deal sealer.


JustAnITGuy

@wideopenwest.com
reply to baess
It actually doesn't have to be supported, as they have 'default' config files that they can push, and sometimes this is the better way to go. I have seen them incorrectly configure supported modems and you will see issues on your connection. The plus side to supported, is that they "hopefully" will release updated config scripts that will fix certain issues. The plus side to the default script, is that most of the time you should see increased speeds as they have to allow for more modem types. The downside to this, is that IF you have issues with your device, you may not see a fix happen, or you might see it with the next default file however those fixes are far and few between.

My CM100 was on the original supported list when I bought it, but the phone tech I spoke to knew nothing about the DPC3010, so I took a gamble on it, but at $35 it wasn't much of a gamble. Heck, that tech told me my CM100 would NOT work on the 30/3 plan, but I knew better, I just didn't get a full and reliable speed.

Body Count

join:2010-09-11
Columbus, OH
reply to JustAnITGuy
said by Anon80:

Just got home from work - the hardware version of my CM100 is v54.0, and the software version is 0.0.6.13170.

Here's my original thread about my CM100 modem issues. This was before I figured it out.

»[Cable] Cisco CM100 modem and WOW (Wide Open West) Cable

Always nice getting help from someone who didn't believe me when I said it was my modem webpage and not my router.

Here's my second thread about the subject with a little more information on it.

»Anyone use the Cisco CM100 modem?

baess

join:2011-01-28
reply to JustAnITGuy
said by Anon80:

It actually doesn't have to be supported, as they have 'default' config files that they can push, and sometimes this is the better way to go. I have seen them incorrectly configure supported modems and you will see issues on your connection.

I was told my old modem was no longer "supported". I believe they went on to say by that they meant they wouldn't be updating the firmware and that's why I was having issues (inconsistent speeds during peak usage times). I think firmware and config files are different (obviously I'm not that well versed). Since it was not supported they wouldn't troubleshoot any further so I figured it was easier to get a different modem.


JustAnITGuy

@wideopenwest.com
Wow, that guy didn't have the luck of the Irish when getting his IQ. Even if I didn't have the same modem and know the page, the text in the upper right, "Cable Modem" kinda gives it away. Even if you don't trust that text, look at the model number and do a Google search on it, and you'll see what it is. That was quite humorous. Well, not knowing everything about your setup, I see two possible issues. One is that the software is much different then mine, and it might have a bug in it with WOW service....I am not sure about that but simply taking a guess as mine worked perfectly even with the 15/1 service and almost full speed with the 30/3 service. The biggest thing to jump out at me is the 52 dBmV Upstream power, as that is insanely high. You want a power in the 40's preferably, and mine was around 34-37 dBmV which was great for my speeds. When you get to around 50-52dBmV you can start to experience network dropouts and it will be even worse at 53 or higher. My guess is that you had something wrong with the cable, connections, splitters, or something. There are a couple of threads that show recommended signal levels and explain what they all mean.

This is a good start:
»Cable Modems and Wiring Issues »What kind of signal levels do I want on my cable modem?

Body Count

join:2010-09-11
Columbus, OH
said by Anon80:

Wow, that guy didn't have the luck of the Irish when getting his IQ. Even if I didn't have the same modem and know the page, the text in the upper right, "Cable Modem" kinda gives it away. Even if you don't trust that text, look at the model number and do a Google search on it, and you'll see what it is. That was quite humorous. Well, not knowing everything about your setup, I see two possible issues. One is that the software is much different then mine, and it might have a bug in it with WOW service....I am not sure about that but simply taking a guess as mine worked perfectly even with the 15/1 service and almost full speed with the 30/3 service. The biggest thing to jump out at me is the 52 dBmV Upstream power, as that is insanely high. You want a power in the 40's preferably, and mine was around 34-37 dBmV which was great for my speeds. When you get to around 50-52dBmV you can start to experience network dropouts and it will be even worse at 53 or higher. My guess is that you had something wrong with the cable, connections, splitters, or something. There are a couple of threads that show recommended signal levels and explain what they all mean.

This is a good start:
»Cable Modems and Wiring Issues »What kind of signal levels do I want on my cable modem?

This was a couple years ago. I sold that modem on craigslist a long time ago. Bought a webstar 2100 off ebay which solved my issues since WOW pushed their config file to it.

My signal levels are now a little more normal. That was fixed as well.