Question about Arris SB5100 SURFboard DOCSIS 2.0 Cable Modem (50120900100)

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Motorola SURFboard SB5100 Cable Modem Multiple Users Problem

I currently have my Motorola modem connected to our dynex wireless enhanced g router to supply the internet to our house for the computer (mac) and my ipod touch. The problem is i also c dynex onnect my xbox 360 to our router (by wire). Whenever we try to use 2 devices at the same time the internet runs extremely slow to where you can basically not use 2 devices at the same time. Please tell me if i need anther set up or a better connection. Any help at all would be appreciated -thanks

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 86 Answers

SOURCE: cable modem + dlink router

Your modem needs to be rebooted in order for your router to pull an IP from the modem. To do this, look for a little hole in the back of your modem and use a pen to push the button. Wait for the reboot to finish and then try again in about 20 seconds.

Posted on Jan 20, 2008

zazonker
  • 68 Answers

SOURCE: Unable to set up wireless router

Shut down your computer, unplug the cable modem and the switch. Connect all three - computer to switch, switch to modem. Make sure that the ethernet cable between the router and the modem is in the router uplink port and that the computer is plugged into one of the four ports that look alike. Wait 30 seconds - plug in the modem. Wait another 30 seconds, plug in the router, wait another 30 seconds and boot the computer. Open a browser and see if you have internet access. If you still don't, then try to check the browser by typing 192.168.1.1 into the address bar of the browser. That should give you the browser sign in screen. The Linksys default is to leave the user name blank and type admin for the password. That should give you access to the router so you can check the settings. If this doesn't work, document carefully what happens and post again with your results and we'll try to go from there.

Posted on Jun 08, 2009

  • 44 Answers

SOURCE: need new ip and mac adress for sb5100 motorola for southwest

To get new IP unplugg power for 1 minutes the plug the power back in. MAC address is a unique identifier specific to that modem. To get a new MAC address you will have to buy a new modem.

Posted on Sep 13, 2009

eagle338
  • 4889 Answers

SOURCE: Ok this is my problem i have a time warner arris

The default username and password for most routers I have seen is admin and admin provided you have not changed it. All are lowercase letters.Also I suggest you use the WPA or WPA2+ encryption if its available. The WEP is easy to crack wirelessly and I had a gala time cracking my neighbor's router in less than 3 hours!

Posted on Dec 02, 2009

Testimonial: "thank you very much even tought the default doesn't work because it doesn't have a default gateaway it says 0.0.0.0"

jesselohse
  • 128 Answers

SOURCE: Does the Motorola SB5100 SURFboard Cable Modem

You can find information on getting hooked up with your modem here

Good Luck!

Jesse

Posted on Jan 05, 2010

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1 Answer

My motorola only has one ethernet port and a cable coax port in the back. I am trying to set up my belkin wireless router but can't because There is only one ethernet port. is there any way around this.


Plug the belkin router into the modem and use the router for the computer that is currently plugged in. If you have a router that doesn't have built in client ethernet ports (Wireless only), then you'll need to get one.

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The wireless connection is not working. The only network that shows up is lynksis wich has a waek connection and asks for a password that i have neever had to use before, so i dont know what the password...


Unfortunately the Motorola SB5100 SURFboard is not a wireless device. The Linksys you are trying to connect to is most likely someone in your area and they have it password protected, which is why it is asking for a password.

In order to setup Wireless you will need to invest in a Linksys, Netgear, D-Link, or some other Wireless Router. They can be found at any computer store.

Once you have the wireless router you can connect an Ethernet cable from the Motorola SB5100 SURFboard to the Wireless Router. From there follow the instructions for the Wireless Router you purchased to set it up and secure it.

If this helps or solves the issue, please rate it and give a testimonial for my response.

Thank You,
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Dec 22, 2010 | Arris SB5100 SURFboard DOCSIS 2.0 Cable...

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Is a Belkin N+ wireless router compatable to a Motorola modem SB5100?


No - one it is a modem, the other is a router.
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Feb 28, 2010 | Arris SB5100 SURFboard DOCSIS 2.0 Cable...

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No, the SB5100 is just a cable modem, not a wireless router. You will need to keep your sb5100 but you will need to purchase a wireless router if you want wireless on your laptop. If you can also plug your laptop into the sb5100 via an ethernet cable for your internet connection. Linksys and Belkin and others make wireless routers that you can use for your wireless connections.

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The only thing that you need to setup on your Linksys for it to work with cable is to make sure that DHCP is enabled on the router.  You will need to plug your router into the modem via the ethernet cable and then plug your neighbors pc into a link port on the router (the cable modem plugs into the internet port)  You will also need to follow the reboot procedure.  Power everything off. 
1: Turn on the surfboard and wait about 1 minute for the surfboard to make a connection with your ISP (the link light should come on).
2:Turn on your router and wait for your router to sync up with the surfboard . 3: Turn on your computer. Whenever you plug anything into a cable modem, you must recycle power to the modem.  It "remembers" the last device that was plugged into it, so it's memory needs to be cleared.

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Make sure that you have the ethernet cord from your modem plugged into the WAN/Internet port on your router. Then unplug the power cord from your cable modem and plug it right back in. After the modem fully comes back online, unplug the power cord on the wireless router and plug it back in. wait 30 - 60 sec and then try and connect.

Most cable companies only allow one active"CPE" at a time for internet access. All this means is when you change what is connected to the cable modem you must always reboot the cable modem to allow access.


Hope this helps. Let me know if it does not work.

Please Rate

Jan 29, 2009 | Arris SB5100 SURFboard DOCSIS 2.0 Cable...

1 Answer

Inability to connect to Internet


The easiest solution would be to use an ethernet connection. A second problem is probably on most cable modems you can either use a USB connection OR an ethernet connection you cannoot use both at the same time.

Dec 12, 2008 | Arris SB5100 SURFboard DOCSIS 2.0 Cable...

1 Answer

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You have to reset the modem from behind (little pin hole) with the modem and router not connected via ethernet, the let it restart and reset the router after both are reset connect the ethernet cable between them.

Nov 21, 2008 | Arris SB5100 SURFboard DOCSIS 2.0 Cable...

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Plug your cable line into your modem, make sure it's tight, but don't use a tool. Next plug the ethernet line from the modem to your PC ethernet port. Then plug in your power to the modem. Allow your modem to sync. Don't use the USB line at all. Do not even hook it up unless your computer doesn't have a working ethernet line. Don't run the disk either, it will only install the modem driver that is only used if you use USB.

If you have issues connecting after that, you may have to go into your ethernet adapter settings and make sure that it is using DHCP. DSL usually uses a different setting (PPP I think) and you will not be able to connect.

By the way, excellent choice in modems.

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