Question about Arris SURFboard SB5101 Cable Modem

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I have tried everything, i tried the command ipconfig renew but it doesnt show nothing, the modem (motorola sb5101n) has all the lights on and the pc activity blinks like everything should be working, but my pc don t have any internet, my computer is using windows vista, i had it running for pretty long time ago and i gave it to my daughter, but it looks like it s not working properly and the tech guy went to my daughters house today and said that he plugged his laptop and it did worked but i dont know, something that i m missing ?? i checked everything with the automatic ip address iv4 and iv6 and everything with the network in the computer

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This could be a couple different things. One it could be the IPV6, if so disable it and it will work. If not then it also could be your antivirus blocking the connection (which i would check first) or it could be the vista IP configuration flag causing it which you would need to follow http://support.microsoft.com/kb/928233

Posted on Mar 28, 2011

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1 Answer

Reset ip address


If you use DSL or a cable modem you could try (as mentioned above) resetting your IP address. Go to the RUN command, type "command"

There you can type:
/ipconfig
(shows your current IP)

/ipconfig /ALL
(more details such as when the current IP "lease" expires)

/ipconfig /renew
(renews your IP address)

/ipconfig /release
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Bell High Speed users need only reset the modem to obtain a new IP. You can check your current IP address from http://www.ip-details.com
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I have a compaq presario SR1303 Wm Desktop I wont connect to internet, stating that local area cable is unplugged, however this isn't true because I have another desktop same model that works fine...


If all looks good try right clicking on network status icon in sys tray and use repair. A more advance option would be to use ipconfig from the command prompt.

Start > Run (search in Win 7) > type ipconfig /release. Then ipconfig /renew. ipconfig ? will show you all the options. Good luck.

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How do I bypass my router and connect my motorola sb5101 to my laptop?


use an ethernet cable and connect the modem with your PC
power cycle the modem to make it recognize your PC
At your PC, http://192.168.100.1 with username and password admin/admin to check the result. If your PC cannot get to that IP, you need to use ipconfig /renew command or simply reboot your PC.

Oct 31, 2010 | Arris SURFboard® SB5101 Cable Modem

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Hello! can u help me with login into the site? i cant seem to log in. it kept on saying 'the connection has timed out!' i have tried switching everything off and wait 4hours and re- try but it still doesnt...


Assuming the login information (username / password) is correct

Can you ping the default gateway?

Have you tried:

ipconfig /release (hit enter) then ipconfig /renew (hit enter) at the command prompt

sometimes you have to use:

ipconfig /flushdns (hit enter) and then ipconfig /registerdns (hit enter)

But try to connect after renewing your ip address before doing the dns

Another thing to try (assuming this is an always on connection) is to look at the cable entering your computer at the network card, are there two lights on? Is one solid and the other flashing?

Let me know if this helps.

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Lost connection


1. check ip address in command prompt
2. If unable to find valid ip address , reset ipaddress , in command prompt type ipconfig /release and then ipconfig /renew
3. Ping default gateway in command prompt
4. then ping www.google.com in command
5. If u can ping in command prompt issue with Internet explorer or with Operating system.
6.Try using different browser.

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1 Answer

Cannot connect although plugged in


Check the ipaddress. Type ipconfig in command prompt. Then ping a website in command prompt if u get proper ip address e.g 10.132.147.121. Try to ping www.google.com in command prompt. If u are unable to connect. Tried to release renew Ip address.
Type ipconfig /release then ipconfig /renew in command prompt. If you are able to ping google and still unable to connect to website using internet explorer, then issue with browser or with OS.

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1 Answer

Many websites are not loading. MSN, Microsoft, etc.


There are a few ways to get this going again.

Goto your control panel;network places;show network connections

Right click your connection, disable it, unplug the power cord from the modem itself for 10 seconds, click the reset button on it, plug it back in, enable the connection, repair.

You can also go into your command prompt.
start;programs;accessories,command prompt

type:
ipconfig

You should see 3 sets of numbers- IP address, subnet mask, and default gateway. If all the numbers are zero, that's a problem!

type this next, remember to have a space before the forward slash:
ipconfig /release_all

after that

ipconfig /renew

Try connecting and let me know what happens

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1 Answer

Internet stopps working


if you have router connected to modem

turn of modem and router, unplug the power plug and wait atleast 25 sec

after 25 sec, power on modem and wait for all the lights turn solid green (power, wireless, internet)

then power on router and connect to modem


go to your pc and click Start>>>>RUN

type CMD

then command prompt will pop up

type ipconfig /flushdns then press enter

type ipconfig /release then press enter

type ipconfig /renew then press enter

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Motorola WR850G


Right off the top I can imagine that the laptop is smirking because it has a battery to get it through the power outage. What may be happening is that the desktop loses it's ip address or the router defaults back to DHCP rather than PPPoE which is where it belongs for DSL. 3 ways to fix this:
1) Reset the power on the DSL modem and wait a minute or two.
2) Go to Start>Run>type 'cmd', Enter, type 'ipconfig /release' then 'ipconfig /renew' then 'ipconfig /all' to see all of the ip addresses for each adaptor and gateway.
3) Go to Start>Run type 'http://192.168.10.1' and a logon window appears. User name is 'motorola', Password is 'admin'. A webpage appears showing you are now talking to your router. In the LAN tab choose PPPoE for automatic DSL control settings. You can also temporarily select DHCP to use the 'Release' and 'Renew' buttons here which is the same as the ipconfig commands you did at the Command Prompt in step 2 but reselect PPPoE before you leave the router control panel. You can also select STATIC if you already know your ip addresses but for DSL you normally use PPPoE. If you haven't done this before then peruse all of the other controls that you can access here. (If you are a gamer this is where you set up your DMZ and so on.
Have a nice day, Steve Medley

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1 Answer

Ethernet Card


Do a ipconfig at the command prompt and see if you are being assigned a ip from the modem. If not try rebooting the modem with the ethernet connected to modem and computer. then do ipconfig again to see if not getting internet ip, your card or modem eternet is bad. put in a new one and try again.

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