Campus Network (Mac OS X) - Connectivity Troubleshooting

Troubleshooting Mac OS X for campus network connectivity

  1. Verify computer is getting a valid IP address by doing the following:
    • Click on Spotlight Search  in the upper right hand corner
    • Type Network Utility into search field and select Network Utility application

    • In the Network Utility window, make sure you are under Info tab and verify the IP address
    Valid campus network IP addresses are 128.x.x.x, 146.x.x.x, or 144.x.x.x. A 169.x.x.x IP address is an automatically assigned IP address by the computer and means the machine is not communicating with the network.

  2. Check to see if the computer is transmitting traffic:
    • Verify the Transfer Statistics "sent packets and received packets", if received packets are zero with a valid IP address it may indicate a bad network card, bad network cable, and/or data jack.
  3. Try pinging a server, click on Ping tab and do the following:
    • Type "www.wisc.edu" If this doesn't work and the results bring back unknown host or unable to resolve error. Try typing "144.92.104.243" if this is successful it will identify a possible DNS issue

  4. If you are getting a valid (or invalid) IP address and still unable to access the internet try renewing the IP address by doing the following:
    • Click on the apple icon in the upper left hand corner and select System Preferences
    • In the System Preferences window select Network
    • In the Network window, make sure you have Ethernet selected in the left task pane and click on Advanced in the bottom right
    • In the Advanced window, make sure you are under the TCP/IP tab and click on Renew DHCP Lease

    Does the machine come back with the same IP address or different one? If it does come back with a valid IP, retry step #2. If you get an invalid address, Get Help from DoIT




Keywords:troubleshooting Mac OS X campus network diagnosis connectivity   Doc ID:2967
Owner:Leah S.Group:DoIT Help Desk
Created:2004-06-17 19:00 CDTUpdated:2014-09-03 15:59 CDT
Sites:DoIT Help Desk, DoIT Tech Store, Systems & Network Control Center
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