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I just got a new router from my ISP and now my airports don't work.

We just switched to direct tv and also got fiber wire internet. We can get up to a gigabit of speed. The airport light is yellow and also the express are yellow.  Can you tell me how to get the airport on line? Or is this something that you need to come out for?
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It’s common for a new service provider to come into a home and disconnect the existing network.  If you are happy with the current coverage of the single ATT router they have given you then I would suggest not reconnecting the Airport devices.  However, if you feel your coverage is better with them, then you can reconnect them but it can be a little complicated.  This is due to the fact that having two routers on the same network can conflict in identical IP addresses being handed out by two routers at the same time.  In general, one would put one router into bridge mode and allow the other router to pass out numbers.  This is not always the best method but it can get a little complicated.  

I deal with this all the time.  I don’t like to try to force business for myself but in this case, you may want me to solve it for you.  It’s a little more involved than I can describe in an email.  With that said, I do suggest you first see if they simply unplugged the ethernet cable from the back of the Airport closest to the ATT router.  There should be an ethernet cable leaving the ATT router and going into the lower most input on the back of the Tower looking Airport extreme.  If it’s an older flat model, then the ethernet port for input would be the one closest to the power plug.  (The far left most as you look at the back of the flat router)
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