No connection with Static IP from ISP.

434 Views 9 Replies 5 Participants Last post by Krunk_Kracker, Nov 28, 2009

Krunk_Kracker

Discussion Starter · Nov 27, 2009

Here's the setup:

Brighthouse Cable with a static IP going into a Linksys WRT300N, which goes into a Netgear FS116 then into a punch down block.

They called me yesterday saying that they lost connections. Just as a back up, I brought in my known working WRT54G with Tomato on it (I've since flashed it back to stock). I get here and I cannot access the 300N. I reset it, and then I can access it. I reassign their static IP, and nothing.

I then hook up my WRT54G to test it, assign the static IP and still nothing.

If I assign my laptop the Static IP it connects fine.

Any ideas?

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Lige

· #2 · Nov 27, 2009

So, if I get this straight, the static IP is for the WAN?

Well, if they resolve the IP from the DHCP servers provided by the ISP, do you get access?

Or are you talking about the static IP for the LAN?

A bit confused here.

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Krunk_Kracker

Discussion Starter · #3 · Nov 27, 2009

Static IP on the WAN. External coming in.

Router or Laptop will not get a connection with DHCP from the WAN.

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Lige

· #4 · Nov 27, 2009

Do they use a residential, or a corporate modem? I assume that you are talking about a business.

There could be two things, the modem is messed up, or ISP messed up on their end of which you obviously can't do much of anything to fix.

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Krunk_Kracker

Discussion Starter · #5 · Nov 27, 2009

Quote:

Originally Posted by GH0

That's my thoughts as well, but it's a new modem, less than a week old. Also, why would it connect to my laptop if I assign it the static IP, but not the router?

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Lige

· #6 · Nov 27, 2009

When did the issue start happening though? If it was in the past week, then that narrows the points down.

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davidmoore

· #7 · Nov 28, 2009

I'm going to assume that Brighthouse Cable is setup the same as Charter Communications and say that if the cable router has been reset then it will need to be reconfigured with the static IP address. An easy test for this would be to reassign the static IP information in to your router and try to ping your gateway (cable router). If you're unable to ping your gateway (cable router) then the static IP information isn't configured.

Cable routers can also be configured with static IP addresses with NAT or PAT.

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error10

· #8 · Nov 28, 2009

It sounds like they're capturing MAC addresses, and recognizing only the MAC address of the laptop. You can either (1) give the ISP the MAC address of the Linksys router, or (2) use the MAC cloning feature in the router to get around this ISP restriction.

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HITandRUN

· #9 · Nov 28, 2009

I throw my 5 cents in here and this is how its working on a Time Warner Road Runner cable modem. They have your MAC address and they assign an IP address automatically to your cable modem. So if there is anything wrong with the modem it wont connect. Also a new modem will not work since it needs to be registered with the ISP and they need to know the MAC address so is the router.

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Krunk_Kracker

Discussion Starter · #10 · Nov 28, 2009

Quote:

Originally Posted by error10

This is exactly what I was thinking about last night. I think I ma assign the router my laptops MAC and see what that does.

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