Help diagnosing wifi connection issue (Debian)

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I am having wifi problems, and I don't even know how to begin diagnosing the issue. My problem is: my wifi works fine on some floors of my office building and doesn't work on other floors. But, in both cases, NetworkManager is able to connect to a wifi access point and give me an IP (the same IP in both cases), and running route -n gives me the same output. But, on the floors where things don't work, I can't ping/traceroute any other IP addresses.



How should I go about figuring out what's going on?



(I'm running Debian 9.1.)






debian wifi







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    I am having wifi problems, and I don't even know how to begin diagnosing the issue. My problem is: my wifi works fine on some floors of my office building and doesn't work on other floors. But, in both cases, NetworkManager is able to connect to a wifi access point and give me an IP (the same IP in both cases), and running route -n gives me the same output. But, on the floors where things don't work, I can't ping/traceroute any other IP addresses.



    How should I go about figuring out what's going on?



    (I'm running Debian 9.1.)






    debian wifi







    share|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am having wifi problems, and I don't even know how to begin diagnosing the issue. My problem is: my wifi works fine on some floors of my office building and doesn't work on other floors. But, in both cases, NetworkManager is able to connect to a wifi access point and give me an IP (the same IP in both cases), and running route -n gives me the same output. But, on the floors where things don't work, I can't ping/traceroute any other IP addresses.



      How should I go about figuring out what's going on?



      (I'm running Debian 9.1.)






      debian wifi







      share|improve this question













      I am having wifi problems, and I don't even know how to begin diagnosing the issue. My problem is: my wifi works fine on some floors of my office building and doesn't work on other floors. But, in both cases, NetworkManager is able to connect to a wifi access point and give me an IP (the same IP in both cases), and running route -n gives me the same output. But, on the floors where things don't work, I can't ping/traceroute any other IP addresses.



      How should I go about figuring out what's going on?



      (I'm running Debian 9.1.)






      debian wifi




      debian wifi






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Oct 3 '17 at 21:12









      Janet

      363




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          The sounds like the issue is at the access point, not your laptop. You are probably connecting to different APs on different floors and the APs are configured differently. For example, my network will allow you to connect to it with the passphrase, but will not allow you to pass traffic unless I enable your MAC. You are going to have to work with the admin of the APs to resolve the problem.






          share|improve this answer




















          • I work at a university and have registered my MAC, so there should be no issue with that. My mobile device, which I registered the same way, works fine on all floors.
            – Janet
            Oct 3 '17 at 23:10










          • The MAC was only an example. It could be the firewall, routing tables, any number of things. You are trying to troubleshoot a problem with only half of the information. Looking at the AP should give some information on why it is not routing correctly. That said, can you ping the AP or gateway itself? What error does traceroute give you?
            – Garnet
            Oct 5 '17 at 0:06











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          The sounds like the issue is at the access point, not your laptop. You are probably connecting to different APs on different floors and the APs are configured differently. For example, my network will allow you to connect to it with the passphrase, but will not allow you to pass traffic unless I enable your MAC. You are going to have to work with the admin of the APs to resolve the problem.






          share|improve this answer




















          • I work at a university and have registered my MAC, so there should be no issue with that. My mobile device, which I registered the same way, works fine on all floors.
            – Janet
            Oct 3 '17 at 23:10










          • The MAC was only an example. It could be the firewall, routing tables, any number of things. You are trying to troubleshoot a problem with only half of the information. Looking at the AP should give some information on why it is not routing correctly. That said, can you ping the AP or gateway itself? What error does traceroute give you?
            – Garnet
            Oct 5 '17 at 0:06















          up vote
          1
          down vote













          The sounds like the issue is at the access point, not your laptop. You are probably connecting to different APs on different floors and the APs are configured differently. For example, my network will allow you to connect to it with the passphrase, but will not allow you to pass traffic unless I enable your MAC. You are going to have to work with the admin of the APs to resolve the problem.






          share|improve this answer




















          • I work at a university and have registered my MAC, so there should be no issue with that. My mobile device, which I registered the same way, works fine on all floors.
            – Janet
            Oct 3 '17 at 23:10










          • The MAC was only an example. It could be the firewall, routing tables, any number of things. You are trying to troubleshoot a problem with only half of the information. Looking at the AP should give some information on why it is not routing correctly. That said, can you ping the AP or gateway itself? What error does traceroute give you?
            – Garnet
            Oct 5 '17 at 0:06













          up vote
          1
          down vote










          up vote
          1
          down vote









          The sounds like the issue is at the access point, not your laptop. You are probably connecting to different APs on different floors and the APs are configured differently. For example, my network will allow you to connect to it with the passphrase, but will not allow you to pass traffic unless I enable your MAC. You are going to have to work with the admin of the APs to resolve the problem.






          share|improve this answer












          The sounds like the issue is at the access point, not your laptop. You are probably connecting to different APs on different floors and the APs are configured differently. For example, my network will allow you to connect to it with the passphrase, but will not allow you to pass traffic unless I enable your MAC. You are going to have to work with the admin of the APs to resolve the problem.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Oct 3 '17 at 22:47









          Garnet

          263




          263











          • I work at a university and have registered my MAC, so there should be no issue with that. My mobile device, which I registered the same way, works fine on all floors.
            – Janet
            Oct 3 '17 at 23:10










          • The MAC was only an example. It could be the firewall, routing tables, any number of things. You are trying to troubleshoot a problem with only half of the information. Looking at the AP should give some information on why it is not routing correctly. That said, can you ping the AP or gateway itself? What error does traceroute give you?
            – Garnet
            Oct 5 '17 at 0:06

















          • I work at a university and have registered my MAC, so there should be no issue with that. My mobile device, which I registered the same way, works fine on all floors.
            – Janet
            Oct 3 '17 at 23:10










          • The MAC was only an example. It could be the firewall, routing tables, any number of things. You are trying to troubleshoot a problem with only half of the information. Looking at the AP should give some information on why it is not routing correctly. That said, can you ping the AP or gateway itself? What error does traceroute give you?
            – Garnet
            Oct 5 '17 at 0:06
















          I work at a university and have registered my MAC, so there should be no issue with that. My mobile device, which I registered the same way, works fine on all floors.
          – Janet
          Oct 3 '17 at 23:10




          I work at a university and have registered my MAC, so there should be no issue with that. My mobile device, which I registered the same way, works fine on all floors.
          – Janet
          Oct 3 '17 at 23:10












          The MAC was only an example. It could be the firewall, routing tables, any number of things. You are trying to troubleshoot a problem with only half of the information. Looking at the AP should give some information on why it is not routing correctly. That said, can you ping the AP or gateway itself? What error does traceroute give you?
          – Garnet
          Oct 5 '17 at 0:06





          The MAC was only an example. It could be the firewall, routing tables, any number of things. You are trying to troubleshoot a problem with only half of the information. Looking at the AP should give some information on why it is not routing correctly. That said, can you ping the AP or gateway itself? What error does traceroute give you?
          – Garnet
          Oct 5 '17 at 0:06


















           

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