Question about Arris SURFboard SB4100 Modem

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SB4100 stopped working suddenly

Had the modem connected for over a year without any issues and it suddenly stopped working. Modem is connected to wireless router. Ive already reset it, attempted to do a diagnostic on it, but nothing works. Config screen on modem shows 0.0.0.0 for HFC IP ADDRESS. Can't connect from XP machine, Vista or XBox.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 3940 Answers

SOURCE: My pc won't connect to the internet

It is the MAC address that needs to be scrubbed from the modem.

power off the desktop, power off the modem, unplug the data cable from the modem, unplug the POWER connection to the modem.

WAIT 3 MINUTES

Connect power to modem, let it reset
Connect data cable to Modem
power on computer

Modem should now connect & work with desktop.

Each time you switch between systems, you may have to do this. More than enough to make me buy a router. =)

Please rate the post. =)

Posted on Jul 15, 2008

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  • 31 Answers

SOURCE: Wi-Fi isn't working

This could be a duplex issue. When you log into the belkin does is assign you an IP address? Have you used a ballpoint pen to reset the EMTA since you have connected the router?

Posted on Apr 09, 2009

  • 489 Answers

SOURCE: cant connect to xbox live need an ip address how do i get one

When the SurfBoard modem is powered up and connects to the internet on the WAN interface, it automatically gets an IP address from your ISP. When another machine is powered up and is connected to the modem via a USB cable, it is automatically using the WAN IP address to communicate with the world. If it is connected via the Ethernet connection, the modem automatically issues it its own IP address for use on the internal network via DHCP. The modem's internal Ethernet connection is 192.168.0.1. The next machine powered on will normally get an IP address of 192.168.0.2.

Posted on May 30, 2009

  • 1 Answer

SOURCE: Recently I subscribed ATT DSL Service conflict IP Address

the motorola modem that att is using uses 192.168.1.x subnet. log onto your router and change it to 192.168.b.x where b is any number between 2 and 254 (just not 1). You should also log onto the modem and change the setting that allows it to share the external ip address with the router. You will need to do this if you plan on accessing your network from the internet.

Posted on Jun 13, 2009

  • 2 Answers

SOURCE: i cant get my motorola sb5101 surf board cable

I have a similar problem. The common denominator seems to be the SB5101. I have a brand new Belkin Surf 300N, same issue. The modem will not give DHCP to the router. I can connect fine via ethernet to the modem directly.
This modem seems to be a dinosaur.

Posted on Aug 06, 2010

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The SB4100 is a digital modem that uses cable TV network to provide broadband Internet access, it can't work with an analog telephone line, for this type of Internet access (also called switched Internet connection), you need an analog internal or external 56K modem, and also you'll need a user name and password (an account) from the Internet provider service (ISP) ; for a temporary Internet connection maybe a prepaid cellular modem (GPRS, EDGE, 3G or 4G) USB type could help you better.

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The modem that you have is getting old and may be going bad but here are a couple of thing to help you out.

Often times this is premises related signal strength issue.
Items that you can check.
1. Is the coax line tight in the back of the modem and at the wall.
2. Are there any splitters where the cable comes out of the wall before it attaches to your modem. If so remove them and attach the cable directly to the wall from the back of the modem and power cycle the modem.
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If all of these items are in place and you still are having problems call your service provider and schedule a service call or try a new modem. Good luck.

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Rate it, if it helps.

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I assume this is a cable modem? You need to call your cable company and have a trouble ticket created. I worked for the cable company installing cable for quite a while and I bet my paycheck the signal getting to the modem are below specs and that's why the modem gets dropping the internet connection.

Hope this helps.

Aug 13, 2008 | Arris SURFboard SB4100 Modem

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