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

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

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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    Alec Lerg

    We have two ISPs and a server for DHCP, if the main network or backup network is down, the first thing that we do is make the changes in the server for the user to start using the other network, until we find the solution for the problem. The main network is where most of the user are connected to, the second network we have it as a backup in case the main network goes down, but still we have a couple of user in the second ISP, that way we know it the backup network is down.
    We have KS-HostMonitor, monitoring the network so, that way we know if there is a problem in the LAN or with the ISPs. Just yesterday we had a problem with the backup network. One of the users told me that the network was really slow, so I connected my computer to that network to realized that in fact it was really slow. In speedtest, it gave me less than 1MB and I ping to 4.2.2.2 and it gave me around 700ms in response. I contacted the ISP and they asked me to connect directly to the modem, I did that and it still was slow, after that they realized that the problem was on their end, and finally they replaced their equipment.
    Having a backup network is what has save our company and being able to do the necessary changes fast by having the DHCP server.

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    what kind of grade did we get? Hope it was an A+!

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    robo_dev

    The teacher is more likely banging his head against the chalkboard, wishing he'd got an IT degree vs a teaching certificate.....

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    Not only that, robo, probably wishing he could ban tablets and laptops from their classroom!

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    Slayer_

    If teacher was smart, s/he would have posted a BS answer here to see if the guy was cheating lol.

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    markp24

    LOL, I would have answered this,- odd my internetconnection is fine, so it must be the end user. LOL

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    jtuck004

    You know the problem is just DNS, don't you?