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Windows 7: please help! unidentified public network with invalid ip

29 May 2010   #21
aem

Windows 7 Ultimate 64Bit
 
 

Before resetting the modem, could you browse the internet buy directly plugging into the internet port of the modem?

Check your machine ipv4 that it does not have any static IP or DNS entry.

Do a ipconfig /all and show as the result.

Otherwise reset modem via 192.168.100.1.




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29 May 2010   #22
seanarice

windows 7
 
 

I have the modem plugged direclty into the computer but my computer is still showing a ip from the router and iprelease iprenew and cleardns cache is not working
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29 May 2010   #23
metalmania31

Windows 7 Pro 64bit build 7601 SP1
 
 

Did you reset your modem?
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29 May 2010   #24
zzz2496

Windows7 Ultimate 64bit
 
 

I wonder if this is the same case as my ISP... My ISP gave me the same modem, they lock my device's MAC address in their system, so I can only have this one particular device connected to the modem. The device can be a router or a computer's NIC. Try calling your ISP's technical support and ask if they lock a certain MAC address for your customer ID...

zzz2496
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29 May 2010   #25
seanarice

windows 7
 
 

Hant tried that but hey mite workat this point almost willling to try anything
My System SpecsSystem Spec
29 May 2010   #26
WindowsStar

Windows 7 Enterprise (x64); Windows Server 2008 R2 (x64)
 
 

Quote   Quote: Originally Posted by zzz2496 View Post
I wonder if this is the same case as my ISP... My ISP gave me the same modem, they lock my device's MAC address in their system, so I can only have this one particular device connected to the modem. The device can be a router or a computer's NIC. Try calling your ISP's technical support and ask if they lock a certain MAC address for your customer ID...

zzz2496
Great point zzz2496!! I completely forgot about that. Many cable companies do this. However a tech showed me a way to get it to work without needing to call tech support.

Turn everything off, plug your computer or router into the cable modem, and turn on the computer or router (wait until it is booted up completely). Disconnect the cable wire from the modem. Make sure your computer or router is plugged into the modem and power on the modem and wait until it completely boots up. Plug in the cable wire wait for about 2 minutes for the modem to re-program. If this does not work repeat the steps taking longer between steps. Works like a charm here.

Side Note: One time I was doing this because I changed out my firewall and I could not get it to work. So I modified the steps for this firewall. Unplug the Modem from the cable and the Ethernet. Plug in the cable wire and power on the modem with NOTHING attached to the Ethernet side. Let the modem sit for at least 5 minutes with no devices plugged into it. With your computer or router off plug in the Ethernet wire and then power on the device wait about 2 minutes. The cable modem should register the MAC address for the one device and all will work correctly.
My System SpecsSystem Spec
29 May 2010   #27
aem

Windows 7 Ultimate 64Bit
 
 

The ISP should not be locking MAC address to the modem.

If he plugs his laptop/desktop directly to the modem internet/WAN port (and the PC is set to DHCP enabled, ie not static IP) he should be able to access the net.

If not, reset the modem but a call to ISP explaining what doesn't work would be good before he does the reset.
My System SpecsSystem Spec
29 May 2010   #28
metalmania31

Windows 7 Pro 64bit build 7601 SP1
 
 

Why does he refuse to reset his modem? This has been asked numerous times.
My System SpecsSystem Spec
29 May 2010   #29
zzz2496

Windows7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by aem View Post
The ISP should not be locking MAC address to the modem.

If he plugs his laptop/desktop directly to the modem internet/WAN port (and the PC is set to DHCP enabled, ie not static IP) he should be able to access the net.

If not, reset the modem but a call to ISP explaining what doesn't work would be good before he does the reset.
aem, different ISP have different policy about who/what can access their network. It's their right to lock MAC address to certain customer ID. If the ISP locked to his router's MAC address, his laptop won't work at all, because the MAC address is unrecognized, thus blocked from entering layer 3 negotiation (IP sub stack).

I personally won't suggest a modem reset. A cable modem is a whole different beast compared to a DSL modem. It got specific ISP settings in it that will spell TROUBLE if you play with it. On the other hand, if it's a DSL modem, I wouldn't hesitate to suggest a reset, because there' s really nothing to worry about in it.

zzz2496
My System SpecsSystem Spec
30 May 2010   #30
seanarice

windows 7
 
 

I have tried everything mentioned in this whole thread numerous times and also please note I have no firewall on and no antivirus software on. Also I have tried manually setting the default gateway and ip and all that with no luck so I guess maybe ill put in my other nic card
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 please help! unidentified public network with invalid ip




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