Best Cable Modem to Purchase?

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February 24th, 2003, 08:22 AM
CeeBee

Quote:

Originally posted by Matridom
....., I get up to 900 kbytes/sec download (yes, kbytes not kbits), works really fine... Have also seen Motorola Surfboard at work, not a bad piece either and it has USB if you want (but why????)
that has NOTHING to do with the modem, and everything to do with your provider.

Then explain this: When I decided to purchase that modem (I had been renting it for a while and I realised that it's cheaper to own it) I also borrowed 2 other models from friends. I have tested them in the same location, on the same computer (we all have the same ISP though). The Terayon yielded 400-500 kbytes/sec, Motorola 600-650, 3Com 850-900. Of course I repeated the tests few times to get a good average and to see if the results are repeatable.
Bottom line: speed DOES have to do with the modem. And since you work for the cable co. you should be aware of factors like reflection, impedance matching, s/n ratio, sensitivity... they can all lead to poor performance and a flawed RF circuit design will only help :D
February 24th, 2003, 03:52 PM
Matridom

Quote:

Originally posted by CeeBee Bottom line: speed DOES have to do with the modem. And since you work for the cable co. you should be aware of factors like reflection, impedance matching, s/n ratio, sensitivity... they can all lead to poor performance and a flawed RF circuit design will only help :D

Ivalid bit ratio's, static, noise, md5 files, caps, limists, smt servers, phub servers etc. yes i AM familiar with that, also the fact that i'm majoring in networking means i'm familiar with talkbalk, cross talk, magnetic interferance etc.. etc.. etc.., and from what your explaining to me, your ISP has a very poor service, a properly configured network won't allow rogue modems to connect, your's does. i would not expect it to last.

DOCSIS modems are authenticated based on the CPE mac address that is referenced to a md5 file on the tftp server, if you change the modem, the new one should not even get sync. your provider obviously does not do this, don't expect it to last.

BTW, if you think it's an IVR issue, enter the modem diagnostics and read the levels for yourself.... I'm sure you'll know what it all means.
February 24th, 2003, 04:59 PM
CeeBee

To Matridom

Quote:

Originally posted by Matridom
... your ISP has a very poor service, a properly configured network won't allow rogue modems to connect, your's does. i would not expect it to last. DOCSIS modems are authenticated based on the CPE mac address that is referenced to a md5 file on the tftp server, if you change the modem, the new one should not even get sync. your provider obviously does not do this, don't expect it to last.

lol ur so funny :) Modem's physical location has nothing to do with authentication as long as it's talking to the same server. Of course a modem that is not registered will not connect, but those were modems registered with my ISP (read the post again). And my "poor" service provider that will not last happenes to have the best service in the US (this is what statistics say, not me).
Obviously you're stubborn enough to refuse to admit other oppinions and facts (I am too sometimes :)), but think of the different 100BT NICs and switches that yield different transfer rates (and they are all running at 100Mbps, without any losses, etc, etc).
I agree, if you have a bad provider and you're unsure about how long you're going to stick with it it's better to rent UNTIL you decide. Otherwise go and get your own, it will pay itself in less than 1 year (and IF it breaks THEN you can have it fixed under warranty). Or... subscribe to my ISP so you can "rent" it for free and get good service :D :D :D
February 24th, 2003, 05:24 PM
flyguy42

I just bought my own Linksys modem. Love it. Matches up nice with my Linksys router. I did do alot of online speedtests, paticularly my upload speed, and noticed when I got my linksys modem, I jumped up like 30kb in my upload. Could just be chance, but thats the only thing I changed. Also, for those who are decided to buy or rent and do not yet have cable modem service. Go sign up at Best Buy. They give you the modem for near free after rebates when you sign up for broadband with them.
February 24th, 2003, 05:29 PM
Matridom

Quote:

Originally posted by CeeBee
lol ur so funny :) Modem's physical location has nothing to do with authentication as long as it's talking to the same server.

I don't believe i ever disagreed with that. authentication takes place usualy on the phub's of the area.. Please, don't put words in my mouth.

Quote:

Of course a modem that is not registered will not connect, but those were modems registered with my ISP (read the post again).

I did, reread that, our authentication servers are very limited and moving a modem down a street will cause it to move to a different authentication server.

Quote:

And my "poor" service provider that will not last happenes to have the best service in the US (this is what statistics say, not me).
Obviously you're stubborn enough to refuse to admit other oppinions and facts (I am too sometimes :)), but think of the different 100BT NICs and switches that yield different transfer rates (and they are all running at 100Mbps, without any losses, etc, etc).

the majority of cable modems don't ever go over 10, so nic would not play a difference, i've seen this first hand.
but i do conceid to the point where modems may vary, but i CANNOT accept a 100% increase in performance that your claiming.

The poor performance is in reference to service providers that use the SAME mdf5 file for all modems or providers that do not require authentication of the CPE mac of the modem. I believe i have clarified this point.

Quote:

I agree, if you have a bad provider and you're unsure about how long you're going to stick with it it's better to rent UNTIL you decide. Otherwise go and get your own, it will pay itself in less than 1 year (and IF it breaks THEN you can have it fixed under warranty). Or... subscribe to my ISP so you can "rent" it for free and get good service :D :D :D

Uhm, my service i'm happy with, i won't touch cable modems in my area due to congestions issues that took too long to fix, besides, the DSL provider is putting a slam station across the street, wich will allow me to have speeds that exceed anything the cable company can provide.

now, I don't want to perpetuate this any more, so let's agree to disagree.

BTW, do to binding contracts, there is a LOT of info i cannot include in this to backup my points.

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