Self assigned IP

[kamik423]

Hello

We had a meeting of our school robotics club, I brought my MacBookPro with me. When we moved around in the room for a while I plugged my mac into different ethernet cables, connected to the same network. Suddenly Internet pages didn't load anymore. I went into network preferences and it said "self assigned ip". Wifi just works fine. I've already tried most of the internet suggestions, but none really works. Also I don't have acces to the router/Server, since it is lovked away in our school.
If anyone could help, that would be great!
(Also I am in Germany if there is something different about the ethernet there...)
I tried different cables, but it still doesn't work.

Thank you
Kamik423

 

[simonsi]

Connect the cable, go into Network Preferences, select your ethernet connection and click "renew lease", if that doesnt get it working then it sounds like that cable isnt connected to a router issuing DHCP or it has run out of ip addresses to issue.

 

[leman]

There can be myriad of reasons what is not working. You should talk to your school's IT service, its their job to solve these things.

 

[kamik423]

Thanks for your answers first of all, but
-I already tried "renew lease"
-It is working fine for everybody else, even my friends laptop
-I am the only mac at my school
-The IT service doesn't have any idea how to help me. I already asked him
(He obly said he could give me a static iP)

 

[simonsi]

Probably have to live with WiFi then as you said that was working.

 

[kamik423]

Well, our schools wifi is just for teachers

 

[simonsi]

Wifi just works fine.

 

[sporadicMotion]

Do any of your classmates personal laptops work? Mac filtering could be enforced by your school.

 

[kamik423]

My classmates (windows) laptops just work fine.
The teacher who manages the server stuff has no idea what's going on. I asked him.
Wifi works at home, but we don't have access to the schools system.

 

[simonsi]

Has yours ever connected and worked, at school, via ethernet cable?

If not, has your machine ever connected to anything via ethernet cable and worked?

 

[kamik423]

Sorry, it has been quite a while,

Ethernet at home works fine.
I tried using manual IP, and used the one of the laptop I took the cable from. It says connected and showes the green dot. However loading a web page will tell me "not connected to the internet"

Please help

 

[satcomer]

Sorry, it has been quite a while,

Ethernet at home works fine.
I tried using manual IP, and used the one of the laptop I took the cable from. It says connected and showes the green dot. However loading a web page will tell me "not connected to the internet"

Please help

Please go into System Preferences-Network pane, Advanced button, and see if in the DNS tab you are getting DNS that the Windows users are using.