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Cable modem doesn't work, but router does. Please help.

post #1 of 9
Thread Starter 
My cable internet from Teksavvy doesn't work when I plug the cable directly into the modem anymore, but it DOES work when I use the router with it.

Can anyone tell me what the problem can be? Is it software or hardware? The problem started when the cable modem (Motorola SB5101N) and the cable wire itself was unplugged from the wall for 6-7 hours the other day.
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post #2 of 9
Use MAC cloning.
Although at this point it would be more of a hassle to change your computer's MAC to match the one of your router..
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post #3 of 9
Thread Starter 
I'm a noob, so bare with me. Do you think this happened because the modem and the cable wire (that was plugged directly into the wall outlet) was unplugged for 6-7 hours?

How do I fix this? I don't know how do to Mac Cloning.
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post #4 of 9
Or you could call your ISP and just have them bring out a new one.
 
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post #5 of 9
Thread Starter 
Cool, I'll try that one and see if it works.
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post #6 of 9
Some ISP's have a large DHCP timeout.
If you swap between devices it will list your IP address as already being allocated to MAC x:x:x:x:x:x. Usually after an hour or so the lease will expire and it will allow you to use a different MAC address to acquire an external IP.
Quote:
Or you could call your ISP and just have them bring out a new one.
Not a modem issue.

OP, any reason you don't want to be behind a router?
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post #7 of 9
Quote:
Originally Posted by beers;13165394 
Not a modem issue.

Your correct sir,after I re-read the post.thumb.gif
Edited by reezin14 - 4/17/11 at 3:36pm
 
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xxl mousepad Same as before  
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Event Ryzen
(18 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7 6700k MSI Z170M Mortar  Sapphire RX470 8GB  Crucial Ballistix Sport (grey & black) 
Hard DriveHard DriveCoolingOS
240GB Transcend SSD  512GB Transcend SSD Corsair H80i V2 Windows 10 Pro 
MonitorKeyboardPowerCase
LG 29UM68-P & LG 23MP48HQ-P CODE 61(MX Clears) Evga SN 550w RaidMax Hyperion (Black & Silver) 
MouseMouse PadAudioAudio
Logitech G900 Hot Eagle XL mousepad Klipsch R-14M's Presonus audiobox usb. 
AudioAudioAudio
Akai Pro MPK Mini Audio-Technica ATH-M50x, Phillips SHP9500's MXL 990/991 
CPUMotherboardGraphicsRAM
Ryzen 1600x  ASROCK AB350M PRO Sapphire RX 470 8GB  Crucial Ballistic Sport LT 32GB 
Hard DriveHard DriveHard DriveCooling
x1 Intel S3500 240GB  x2 Intel S3700 400GB  5TB Toshiba NZXT Kraken x52  
OSOSMonitorMonitor
Windows 10 Pro Fedora workstation 25  29in LG ultrawide  25in LG ultrawide 
KeyboardPowerCaseMouse
MagicForce 68(Gateron Blacks) SeaSonic 620 ???? Open Air-Haven't decided Logitech 303 
Mouse PadAudio
xxl mousepad Same as before  
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post #8 of 9
Thread Starter 
Problem solved, but it's a weird issue. I switched cables and now it works when I plug it directly into the modem. But if it's a damaged cable issue, then how come it worked when I used the router with the modem?

If the internet didn't work cause of damaged cables, then should it also not work when I tried using the router? This is really weird.
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My System
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[*] [Windows 7 Professional 64-bit] [Samsung SyncMaster P2770FH 27" 1080P] [Logitech MK320 cordless] 
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post #9 of 9
cable modems memorize the first mac address they see and lock onto that address as their only valid client (why it won't work if you just use a switch).

the easy way around this is to switch the plugs and then just reboot the modem, causing it to lose it's memorized address and attach to the next one it sees.
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