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Internet goes down across an organization. What do you do to troubleshoot?

By FredTill ·
You are an IT professional working for a large organization. The internet goes down across the organization and you need to act quickly. What do you do to remain focused and stay calm? What steps would you take to trouble shoot the issue?

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I would first fire the guy who does not do his own homework

by robo_dev In reply to Internet goes down across ...

Then get to work looking into the issue....

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Are you surfing while taking your final exam?

by jqbecker In reply to Internet goes down across ...

If so, shame on you.

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Reponse To Answer

My thoughts as well! Anyway, the first place to check is not with your hardware or systems, BUT instead contact your service provider!

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check the modem?

by Slayer_ In reply to Internet goes down across ...

Then work backwards

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by OH Smeg In reply to check the modem?

NA Slayer that's wrong.

You first check the ISP then Modem and if they are OK work back from there.

I remember a time when the company insisted that the ISP was working and I wasted hours only to finally be told that the ISP was down due to an digging incident where a end loader had knocked over a Power Pole and torn the Fiber Optic Cable and it was in the process of being repaired.

Col

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Reponse To Answer

by lucvdv In reply to check the modem?

Run a traceroute to an external IP -- by numeric IP, not by name (and preferably one you know will reply, for example 8.8.8.8).
If that just shows you that your packets get through all the way to beyond your ISP, find out why DNS stopped working.

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Reponse To Answer

by Ryalsbane In reply to check the modem?

Check the modem?!!! Seriously? If you are a large organization you won't be on a "modem," even a DSL broadband modem. If you are, then that is the problem. You need a complete redesign of your network from the ground up and upgrade of your infrastructure.

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Reponse To Answer

by Slayer_ In reply to check the modem?

I don't know what you call that box that the fibre goes into...
In our server room its about 6 by 6 by 2, has flashing lights, looks sort of like a modem.

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Reponse To Answer

by Slayer_ In reply to check the modem?

I'm a computer programmer, I don't have to know how it works, just how to break it

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by OH Smeg In reply to check the modem?

Well I call that box in rack in the server room with flashing LES's that gives you an outside connection to the world a Modem.

The ISP here calls that Box a Cable Modem meaning it has Fiber Optical Cable coming into it and is the connection between here and the Internet.

So Ryalsbane what do you call that box with the LED's on the front of it?

Unless of course you mean we should all be using a 3/4G connection to the outside world but that's not going to happen here at least because it's way too expensive and it's still called a Modem even though it has a Router in it. :^0

Col

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