I’m currently starting Cisco and using the packet tracer course, but I’m having an issue with a section creating a simply topology. Everything good apart from one thing which is from wireless router to cable modem I’m using copper straight wire and when I connect router with internet interface to modem port 1 as required the connection is red. All devices are configured correctly and green linked.enter image description hereAny advice would be appreciated.

  • Sadly, education and examination questions are off topic here.
    – Ron Trunk
    Apr 13, 2020 at 12:56

1 Answer 1


You probably picked the wrong router type. Try to replace it by the WRT300N model. I've been stuck also on this one few days ago :)

Cannot tell you technically why the first HomeRouter model behave this way though as I'm not yet enough experienced!

  • Thanks a lot , I’ve also been puzzled by this for few days, but as I’m new, you don’t automatically see that model in device selection, I had to search for it. Much appreciated 👍
    – ollie
    Apr 13, 2020 at 11:30

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