1/4 Speed after switch from CyberSurfer to SB4100?

[Goliath]

I just installed a new SB4100 to replace my original rented Motorola CyberSurfer non-docsis modem. Now my dl speeds are about 25% of what I had:
Before:
2877/112 kbps vron1.nj.home.com
After:
717/116 kbps narltn1.nj.home.com

I checked the modem diagnostics at 192.168.100.1 and everything looks good: 32db s/n, -3 dBmV power level, 64 QAM (s/b 256?). My pings look good and have no rexmits on the tweak test.

An @home tech supposedly did a 'push' to my modem but this has not improved anything. The first tech said she couldn't access the Comcast network to do it. So I'm not sure they did anything. I am thinking about going back to the Cybersurfer. Any ideas what the problem is?

[Goliath]

Hitting the reset to defaults button in the Modem's config screen and reinitializing the modem fixed the problem.

[Cruzn]

Hello, I just purchased a SB4100 myself and everything is running just fine, except that my upload speed is slower than with my SB3100, I noticed you had accessed the config page for the modem ussing the IP address but I was unable to access this page? Is there any documentation on this Modem config page? Thanks

[Goliath]

I am not aware of any documentation for the config page.

You should be able to access the config page through your browser at http://192.168.100.1/ . Make sure your browser is not set to use a Proxy - uncheck the proxy boxes in IE 5 or 6 from the browser main menu: Tools, Internet Options, Connections, Lan Settings - then it should work.

The config pages only allow you to reset and reboot the modem, everything else is diagnostic information. According to one of the @home techs, unplugging the modem for 5-10 minutes accomplishes the same thing as the reset.

What was your u/l speed before and after? The speeds on @home have been varying a lot for me lately, so it may be unrelated to the new modem.

[illestdynasty]

I'm running a surfboard too, my question is, how did you find out about the config page????? Also I have my cable modem and router sitting side by side on a Large speaker. I haven't noticed any performance dropps, while the stereo is on, but would u recommend relocating everything?

Thanks for the info.

[Goliath]

I think I found the SB4100 info on a thread at www.dslreports.com. There is also this link that I think I got from the same place:http://homepage.ntlworld.com/robin.d...er/cmtips.html . It's long, but if you page through it you'll see the SB4100 as well as other brands config info.

I'm not a RF engineer, but as far as I know, magnetic fields from loudspeakers should not affect your cable modem or router. CRT displays and hard disk drives might be a concern though.